WO2024056085A1 - 快速热处理带钢生产线 - Google Patents

快速热处理带钢生产线 Download PDF

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Publication number
WO2024056085A1
WO2024056085A1 PCT/CN2023/119209 CN2023119209W WO2024056085A1 WO 2024056085 A1 WO2024056085 A1 WO 2024056085A1 CN 2023119209 W CN2023119209 W CN 2023119209W WO 2024056085 A1 WO2024056085 A1 WO 2024056085A1
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WIPO (PCT)
Prior art keywords
section
station
cooling
heating
post
Prior art date
Application number
PCT/CN2023/119209
Other languages
English (en)
French (fr)
Inventor
张理扬
李俊
张利祥
王健
刘华飞
王骏飞
张宝平
熊伟
刘益民
路凤智
王甲子
吴长生
万照堂
王超
王彦辉
胡广魁
钱洪卫
Original Assignee
宝山钢铁股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from CN202211122876.4A external-priority patent/CN117737631A/zh
Priority claimed from CN202211122427.XA external-priority patent/CN117702029A/zh
Priority claimed from CN202211122659.5A external-priority patent/CN117737634A/zh
Priority claimed from CN202211131552.7A external-priority patent/CN117737399A/zh
Priority claimed from CN202211122150.0A external-priority patent/CN117737392A/zh
Priority claimed from CN202211122144.5A external-priority patent/CN117701868A/zh
Priority claimed from CN202211122167.6A external-priority patent/CN117702033A/zh
Priority claimed from CN202211122170.8A external-priority patent/CN117737629A/zh
Priority claimed from CN202211122533.8A external-priority patent/CN117702035A/zh
Priority claimed from CN202211122803.5A external-priority patent/CN117737630A/zh
Priority claimed from CN202211122193.9A external-priority patent/CN117702034A/zh
Priority claimed from CN202211122488.6A external-priority patent/CN117701869A/zh
Priority claimed from CN202211122426.5A external-priority patent/CN117737397A/zh
Priority claimed from CN202211122486.7A external-priority patent/CN117737391A/zh
Priority claimed from CN202211131566.9A external-priority patent/CN117701872A/zh
Priority claimed from CN202211122619.0A external-priority patent/CN117737357A/zh
Application filed by 宝山钢铁股份有限公司 filed Critical 宝山钢铁股份有限公司
Publication of WO2024056085A1 publication Critical patent/WO2024056085A1/zh

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon

Definitions

  • the present invention relates to a rapid heat treatment strip production line.
  • a common method is to use direct fire heating, and it is preferable to use clean natural gas for direct heating to prevent unclean combustion exhaust gas from contaminating the strip surface, and use direct fire combustion exhaust gas to directly preheat the strip steel.
  • Another common way is to use radiant tubes for heating, and use radiant tubes to burn exhaust gas to preheat the steel.
  • the exhaust gas emission temperature of direct fire combustion after preheating the steel is still relatively high, usually exceeding 800°C, and sometimes exceeding 850°C.
  • cold air is usually required to control the exhaust gas emission temperature at 850°C. °C and below can be used for secondary offline use.
  • the higher the exhaust gas temperature the greater the heat energy loss. It can be seen that with this method, the primary online utilization rate of thermal energy is low, and the steam or hot water generated by the secondary offline utilization often cannot be fully consumed in the unit, so it will bring difficulties in energy balance in the area; due to direct fire combustion
  • the exhaust gas is in direct contact with the strip steel and the contact time is long.
  • the excess gas in the direct combustion exhaust gas needs to be recombusted in the preheating section.
  • the secondary combustion flame is often an oxidizing flame, which inevitably limits the preheating temperature of the strip steel. Improve, otherwise, it is easy to form an overly thick oxide layer on the surface of the strip steel, especially for high-strength steel and ultra-high-strength steel. Since Si, Mn and other strengthening alloy elements are added to the substrate, the surface of the strip steel is easier to form than ordinary strength products. The enrichment of alloy strengthening elements occurs, causing surface quality problems. Therefore, usually the preheating temperature of strip steel can only be preheated to about 250°C, and the preheating effect is poor.
  • the exhaust temperature of the combustion exhaust gas after preheating the steel is still relatively high.
  • it usually exceeds 350°C.
  • the efficiency is significantly reduced, and the equipment occupies a large area.
  • the proportion of energy directly utilized on the strip is low, that is, a large amount of heat is still taken away by the exhaust gas after preheating the steel (the higher the temperature of the exhaust gas after preheating the steel, the more heat is taken away), and the combustion The heat is not fully transferred to the strip (that is, the primary utilization rate of energy is low).
  • the temperature of the preheated strip is limited, and it is usually difficult for the preheated strip to exceed 250°C.
  • the purpose of the invention is to configure a series of production lines using new direct fire preheating equipment, new radiant tube preheating equipment and/or jet radiation composite heating equipment to achieve rapid heat treatment, etc.
  • the purpose of the present invention is to provide a rapid hot-dip galvanizing strip production line that can achieve the following objectives: when using direct fire heating, the waste heat of direct fire combustion exhaust gas can be fully utilized, and the strip temperature can be quickly preheated to at least 350°C.
  • a rapid hot-dip galvanizing strip production line which includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - outlet looper - smoothing - coiling; wherein,
  • the central continuous post-processing station includes a preheating section, a heating section, a soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced heat preservation section, a secondary reheating section, a furnace nose section, and a zinc pot. section, air knife section, post-plating cooling section and final water cooling section;
  • the preheating section adopts a jet direct fire preheating device or a jet radiation composite heating device
  • the heating section adopts a direct fire heating section and/or a radiant tube heating section
  • the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the injection direct fire preheating device uses the combustion exhaust gas of the direct fire heating section to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • the jet radiation composite heating section and soaking section also use radiant tubes to burn exhaust gas to heat recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced heating. Convective heat transfer.
  • an alloying heating section and an alloying soaking section are provided between the air knife section and the post-plating cooling section; the hot-dip galvanizing is alloyed hot-dip galvanizing.
  • a movable post-plating quick cooling section that can be switched online/offline is provided behind the air knife of the central continuous post-processing station, and the movable post-plating quick cooling section is arranged side by side with the alloying heating section.
  • a cleaning station is provided before the entrance looper station.
  • cleaning stations are provided in front and behind the entrance looper station.
  • a central looper is provided before the leveling station and after the central continuous post-processing station.
  • a finishing station is provided between the coiling station and the outlet looper station, and the strip is coiled after finishing.
  • a tensioning and straightening station is provided between the flattening station and the outlet looper station, and the strip can optionally undergo tensioning and straightening treatment before entering the outlet looper.
  • a surface post-processing station such as passivation or fingerprint resistance is set between the flattening station and the exit looper station. You can choose to carry out surface treatment such as passivation or fingerprint resistance before entering the exit looper.
  • a tension and straightening station and a surface post-treatment station such as passivation or fingerprint resistance are also provided between the flattening station and the exit looper station.
  • the strip steel can be optionally subjected to tension and straightening or/and passivation or fingerprint resistance. Wait for surface treatment before entering the outlet looper.
  • the rapid hot-dip galvanized strip production line designed by the present invention includes the following stations: uncoiling - welding - entrance looper - cleaning - central continuous post Processing - outlet looper - flattening - coiling; wherein, the central continuous post-processing station includes a jet direct fire preheating section, a direct fire heating section, a radiant tube heating section, a radiant tube soaking section or a jet radiation composite Soaking section, slow cooling section, high hydrogen cooling section, reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the injection direct fire preheating section uses the direct fire heating section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip galvanizing strip production line designed by the present invention includes the following stations: uncoiling - welding - entrance looper - central continuous post-processing - outlet looper - flattening - coiling; wherein, the The central continuous post-processing station consists of a jet radiation composite heating section, a radiant tube heating section, a radiant tube soaking section or a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced insulation section, and two Secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating section and soaking section also use radiant tubes to burn exhaust gas to heat recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced heating. Convective heat transfer.
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid alloyed hot-dip galvanized strip production line designed by the present invention includes the following stations: Uncoiling-Welding-Inlet Loop-Central Continuous Post-processing-export looper-flattening-coiling; among which,
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, and a balanced insulation section. , secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling section.
  • the injection direct fire preheating section uses the direct fire heating section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid alloying hot-dip galvanized strip production line designed by the present invention includes the following stations: uncoiling - welding - entrance looper - central continuous post-processing - outlet looper - flattening - coiling; wherein,
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced insulation section, and a secondary reheating section. , furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating section and the soaking section use radiant tubes to radiate the strip steel, and also use the radiant tubes to burn exhaust gas to heat recycled nitrogen and hydrogen protective gases, and then the nitrogen and hydrogen protective gases are sprayed onto the upper and lower surfaces of the strip steel to achieve forced convection. heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the soaking section uses jet radiation composite heating equipment to achieve rapid adjustment of the strip soaking temperature when the strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • the hot-dip pure zinc station of the central continuous post-processing station in the hot-dip pure zinc strip production line is equipped with an optional movable post-plating quick cooling section after the air knife section and in front of the post-plating cooling section.
  • an optional movable post-plating quick cooling section after hot-dip galvanizing from the zinc pot section and controlling the coating weight through the air knife section equipment, you can choose to use the movable post-plating quick cooling section for post-plating quick cooling, or you can choose not to use the movable post-plating quick cooling section for natural cooling before post-plating. Cooling to achieve continuous production of hot-dip galvanized high-strength strip steel.
  • an optional mobile post-plating quick cooling section is set up parallel to the alloying heating section.
  • the strip is hot-dip galvanized from the zinc pot section.
  • the air knife section controls the coating weight, if hot-dip pure zinc products are produced, the mobile post-plating quick cooling section will be switched online and the alloying heating section will be offline; if alloyed hot-dip galvanizing products are produced, the mobile post-plating quick cooling section will be switched online. Offline, switch the alloying heating section equipment to online use.
  • the combustion exhaust gas from the heating section passes through the heat exchanger chamber of the preheating section.
  • the combustion exhaust gas from the heating section fully exchanges heat with the heat exchanger in the heat exchanger chamber, and the heating Nitrogen and hydrogen protective gas, so the combustion exhaust gas of the heating section in the direct-fire injection preheating section is not always in direct contact with the strip (when the heating section uses direct fire heating, the direct-fire injection preheating section only directly contacts the strip steel for a short period of time in the high-temperature section) Contact and at this time the exhaust gas belongs to a reducing atmosphere or a slightly oxidizing atmosphere), thereby avoiding overoxidation of the strip surface;
  • the heating section uses direct fire heating
  • the incompletely burned gas in the direct fire combustion exhaust gas undergoes oxygen-rich secondary combustion in the semi-sealed unit at the top of the jet preheating section, but the burning flame does not contact the strip steel, so it is effective Avoid overoxidation of the strip surface
  • the strip preheating temperature is higher.
  • the preheated strip temperature can reach at least 350°C and above.
  • the strip temperature is at least 100°C higher than that of ordinary preheating section;
  • the temperature of the direct fire combustion exhaust gas coming out of the preheating section of the injection radiant tube of the present invention is usually much lower than 750°C (if a sufficient number of high-speed injection preheating units are arranged, it can even reach 200°C Directly discharged below), there is no need to mix cold air for secondary use outside the furnace or no need for secondary use at all.
  • the jet radiation composite heating section equipment is used to quickly heat the strip.
  • the heating equipment also uses the radiant tube combustion exhaust gas to heat the recycled nitrogen and hydrogen protective gas. , and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • the heat exchange efficiency is high.
  • the exhaust gas temperature can be directly utilized and then discharged below 250°C. Basically all the combustion heat is transferred to the heating of the strip.
  • pre-oxidation and reduction treatment can be used on high-strength steel to improve the plateability of high-strength steel;
  • the invention sets up secondary reheating section equipment to achieve two rises in strip temperature before hot-dip galvanizing, allowing third-generation high-strength steel (QP steel) products to be quickly cooled to a lower temperature and then quickly heated immediately. Carry out long-term carbon redistribution treatment to a higher temperature, and after the treatment is completed, it is quickly reheated to the temperature of the hot-dip galvanizing pot to perform galvanizing treatment;
  • QP steel third-generation high-strength steel
  • the alloyed hot-dip galvanizing high-strength steel production line of the present invention can simultaneously produce hot-dip galvanized products with two coating types: hot-dip pure zinc and alloyed hot-dip galvanizing.
  • the strip temperature can be raised twice before hot-dip galvanizing, which can realize the rapid cooling of third-generation high-strength steel (QP steel) products to a lower temperature, and then quickly heat to a higher temperature.
  • QP steel third-generation high-strength steel
  • the strip soaking temperature can be quickly adjusted when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change, which can reduce quality losses caused by inconsistent strip temperatures.
  • the invention also provides a rapid hot-dip galvanizing high-strength strip steel production line, which can achieve the following purposes: 1) Improve preheating: using new heating technology, the waste heat of the combustion exhaust gas is fully utilized, and basically all the waste heat of the combustion exhaust gas is transmitted to the strip On the steel, the primary utilization rate of heat energy is improved, so that the combustion exhaust gas can be directly discharged after fully heating the strip steel, or make full use of radiation.
  • the waste heat from the tube heating section or the radiant tube soaking section can fully preheat the steel. There is no need to add a boiler or superheated water heating device for secondary use, which significantly reduces investment and floor space.
  • a rapid hot-dip pure zinc high-strength strip production line which includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - leveling - outlet looper - coiling; wherein, the central continuous The post-processing stations include the jet radiation composite heating section, the radiant tube heating section, the transverse magnetic induction heating section, the radiant tube soaking section, the slow cooling section, the high hydrogen cooling section, the reheating section, the balanced insulation section, and the secondary reheating section. , furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating section In addition to using radiant tubes to radiate and heat the strip, the jet radiation composite heating section also uses the radiant tube combustion exhaust gas to heat recycled nitrogen-hydrogen protective gas or full hydrogen gas, and then the nitrogen-hydrogen protective gas or full hydrogen gas is injected into the strip. Forced convection heat transfer is achieved on the upper and lower surfaces. Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating to rapidly heat the strip.
  • the rapid hot-dip pure zinc high-strength strip production line of the present invention includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein, the The central continuous post-processing station includes a jet radiant tube preheating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced insulation section, and two Secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the injection radiant tube preheating section uses the radiant tube heating section and the radiant tube soaking section to burn the exhaust gas to heat the recycled nitrogen and hydrogen protective gas in the furnace, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip pure zinc strip production line of the present invention includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein,
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, and a balanced heat preservation section.
  • the jet radiation composite heating section not only uses radiant tubes to radiate the strip steel, but also uses radiant tubes to burn
  • the nitrogen and hydrogen protective gas or full hydrogen gas used in the waste gas heating cycle is then sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange; both the reheating section and the secondary reheating section adopt vertical Magnetic induction heating equipment rapidly heats the strip.
  • the rapid hot-dip pure zinc high-strength strip production line of the present invention includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein , the central continuous post-processing station includes a jet radiant tube preheating section, a radiant tube heating section, a transverse magnetic induction heating section, a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, and a balancing section.
  • the injection radiant tube preheating section uses the radiant tube heating section and the radiant tube soaking section to burn the waste gas to heat the recycled nitrogen and hydrogen protective gas in the furnace, and then Nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange; both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • an alloying heating section and an alloying soaking section are set between the air knife section and the post-plating cooling section; the hot-dip galvanizing is alloyed hot-dip galvanizing.
  • an optional movable post-plating quick cooling section is provided after the air knife section and before the post-plating cooling section.
  • an optional movable post-plating rapid cooling section is provided behind the air knife section, and the movable post-plating rapid cooling section is arranged side by side with the alloying heating section.
  • a cleaning station is provided before the entrance looper station.
  • cleaning stations are provided before and after the entrance looper station.
  • a central looper is provided before the leveling station and after the central continuous post-processing station.
  • a finishing station is provided between the coiling station and the outlet looper station, and the strip is coiled after finishing.
  • a tensioning and straightening station is provided between the flattening station and the outlet looper station, and the strip can optionally undergo tensioning and straightening treatment before entering the outlet looper.
  • a surface post-processing station such as passivation or fingerprint resistance is also provided between the flattening station and the outlet looper station.
  • the strip steel can optionally undergo surface treatment such as passivation or fingerprint resistance before entering the outlet looper.
  • a tension and straightening station and a surface post-treatment station such as passivation or fingerprint resistance are set up simultaneously between the flattening station and the exit looper station.
  • the strip steel can be optionally subjected to tension and straightening or/and passivation or fingerprint resistance. Surface treatment then enters the outlet looper.
  • the present invention uses the jet radiation composite heating section equipment to quickly heat the strip.
  • the heating equipment also uses the radiant tube to burn the exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then uses nitrogen and hydrogen to heat the strip.
  • the protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • the heat exchange efficiency is high.
  • the exhaust gas temperature can be directly utilized and then discharged below 250°C. Basically all the combustion heat is transferred to the heated strip.
  • the waste heat of the radiant tube heating and soaking can be fully utilized online, and the strip temperature can be preheated to At least above 250°C.
  • the present invention realizes rapid heating and rapid cooling annealing of high-strength steel through the combined use of a jet radiant tube preheating device or a jet radiation composite heating device + transverse magnetic induction heating equipment and high hydrogen rapid cooling equipment, and can improve the strength of high-strength steel;
  • the present invention uses transverse magnetic induction heating for further rapid improvement of high-temperature strip steel, which can realize ultra-high temperature annealing of high-strength steel;
  • the present invention sets up secondary reheating section equipment to realize two rises in strip temperature before hot-dip galvanizing, which can realize Modern third-generation high-strength steel (QP steel) products are quickly cooled to a lower temperature, and then immediately heated to a higher temperature for a long-term carbon redistribution treatment. After the treatment is completed, they are quickly reheated twice to hot-dip galvanizing. Pot temperature, galvanizing;
  • the hot-dip galvanizing high-strength steel production line of the present invention can simultaneously produce hot-dip galvanized products with two coating types: hot-dip pure zinc and alloyed hot-dip galvanizing.
  • Transverse magnetic induction heating is used for further rapid improvement of high-temperature strip steel, which can realize ultra-high temperature annealing of high-strength steel;
  • the strip temperature can be raised twice before hot-dip galvanizing, which can realize the rapid cooling of third-generation high-strength steel (QP steel) products to a lower temperature, and then quickly heat to a higher temperature.
  • QP steel third-generation high-strength steel
  • the strip soaking temperature can be quickly adjusted when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change, which can reduce quality losses caused by inconsistent strip temperatures.
  • the rapid hot-dip galvanizing ultra-high-strength strip production line of the present invention can realize ultra-high-temperature annealing of high-strength strip steel at low cost, and achieves the following purposes: 1) Improved preheating: direct fire heating is used, and the waste heat of direct fire combustion exhaust gas is If fully utilized, the strip temperature can be quickly preheated to at least 350°C, and the direct fire combustion exhaust gas can be prevented from directly contacting the strip for a long time in the preheating furnace, thus avoiding the formation of an excessively thick oxide layer on the surface of the strip. 2) Improve uniform heating to achieve rapid adjustment of the uniform heating temperature of strip steel; 3) Improve ultra-high temperature heating: Use transverse magnetic induction heating technology to further rapidly increase the heating temperature of high-temperature strip steel.
  • a rapid hot-dip galvanizing ultra-high strength strip production line which includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein, the central continuous The post-processing station includes a spray direct fire preheating section, a direct fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced insulation section, and two Secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section; the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section; the jet direct fire The preheating section uses the direct-fired heating section to burn the exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then sprays the nitrogen and hydrogen protective gas onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • the present invention also designs a rapid hot-dip galvanizing ultra-high-strength strip production line, which includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein , the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, and a uniform heating section.
  • the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section;
  • the rapid cooling section adopts an aerosol cooling section and/or a water quenching cooling section;
  • the jet direct-fire preheating section utilizes a direct-fire heating section.
  • the exhaust gas is burned to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange; both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to perform heating on the strip. Heats up quickly.
  • hot-dip galvanizing adopts alloyed hot-dip galvanizing, that is, an alloying heating section and an alloying soaking section are set between the air knife section and the post-plating cooling section.
  • a flash iron plating or flash nickel plating section is added after the pickling section, and the strip is flash plated before subsequent treatment.
  • an optional mobile post-plating rapid cooling section equipment is installed after the air knife section and in front of the post-plating cooling section equipment. After the strip is hot-dip galvanized from the zinc pot section and passes through the air knife section to control the coating weight, you can choose to use the mobile post-plating rapid cooling section equipment.
  • the cold section is used for rapid cooling after plating, or it is not necessary to use the mobile post-plating rapid cooling section for natural cooling and then post-plating cooling to achieve continuous production of hot-dip galvanized strips.
  • an optional mobile post-plating quick cooling section is set up in parallel with the alloying heating section.
  • the strip is hot-dip galvanized from the zinc pot section and passed through the air knife section equipment to control the coating weight, if hot-dip pure zinc products are produced , the mobile post-plating quick cooling section is switched to online use, and the alloying heating section equipment is offline; if alloyed hot-dip galvanizing products are produced, the mobile post-plating quick cooling section equipment is switched offline, and the alloying heating section equipment is switched to online use.
  • the radiant tube soaking section is replaced with a jet radiation composite soaking section to achieve rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • cleaning stations are provided before and after the inlet looper station.
  • a central looper station is set up before the leveling station.
  • a finishing station is provided between the coiling station and the outlet looper station, and the strip is coiled after finishing.
  • a tensioning and straightening station is also provided between the leveling station and the outlet looper station, and the strip can optionally undergo tensioning and straightening treatment before entering the outlet looper.
  • a surface post-processing station such as passivation or fingerprint resistance is set up between the flattening station and the outlet looper station.
  • the strip steel can choose to undergo surface treatment such as passivation or fingerprint resistance before entering the outlet looper.
  • a tension and straightening station equipment and a surface post-treatment station such as passivation or fingerprint resistance are provided between the flattening station and the exit looper station.
  • the strip steel can be optionally subjected to tension and straightening or/and passivation or fingerprint resistance. Surface treatment then enters the outlet looper.
  • the rapid cooling section adopts a high hydrogen cooling section and a mist cooling section + pickling section in parallel, or a high hydrogen cooling section and a water quenching cooling section + pickling section are connected in parallel, with Steel can choose to use high hydrogen cooling, or use gas mist cooling or water quenching cooling.
  • the rapid cooling section adopts a gas mist cooling section and a water quenching cooling section in series, and a pickling section is set up after the water quenching cooling section.
  • the strip steel can choose to be processed only Aerosol cooling is also an option Only water quenching cooling is performed, or you can choose aerosol cooling first and then water quenching cooling.
  • the rapid cooling section adopts a high-hydrogen cooling section and a series (aerosol cooling section + water quenching cooling section + pickling section) in parallel, and the strip steel can choose a high-hydrogen cooling section.
  • aerosol cooling section + water quenching cooling section + pickling section in parallel
  • the strip steel can choose a high-hydrogen cooling section.
  • aerosol cooling, water quenching cooling, or aerosol cooling first and then water quenching cooling you can also choose aerosol cooling, water quenching cooling, or aerosol cooling first and then water quenching cooling.
  • the hot-dip pure zinc station of the central continuous post-processing station is equipped with an optional movable post-plating quick cooling section after the air knife section and in front of the post-plating cooling section.
  • the strip is discharged from the zinc pot.
  • Continuous production of galvanized high-strength steel strip is controlled by the air knife section to control the coating weight, you can choose to use the movable post-plating quick cooling section for post-plating quick cooling, or you can not choose to use the movable post-plating quick cooling section for natural cooling and then post-plating cooling to achieve hot-dip galvanizing.
  • an optional mobile post-plating quick cooling section is set up parallel to the alloying heating section.
  • the strip is hot-dip galvanized from the zinc pot section.
  • the coating weight is controlled by the air knife section, if hot-dip pure zinc products are produced, the mobile post-plating quick cooling section is switched online and the alloying heating section is offline; if alloyed hot-dip galvanizing products are produced, the mobile post-plating quick cooling section is used Switch offline and switch the alloying heating section to online use.
  • an optional cleaning station equipment is provided between the welding station and the entrance looper station.
  • the strip steel can be cleaned through the cleaning station, or the cleaning station can be bypassed; further preferably, at the entrance There are cleaning stations in front and behind the looper station.
  • the combustion exhaust gas from the heating section passes through the heat exchanger chamber of the preheating section. During the passing process, the combustion exhaust gas from the heating section fully exchanges heat with the heat exchanger in the heat exchanger chamber to heat the nitrogen. Hydrogen protection gas is used, so the combustion exhaust gas of the heating section in the injection direct-fire preheating section is not always in direct contact with the strip (when the heating section is heated by direct fire, the injection direct-fire preheating section is only in direct contact with the high-temperature section for a short time and this When the exhaust gas is a reducing atmosphere or a slightly oxidizing atmosphere), it can avoid peroxidation of the strip surface;
  • the heating section uses direct fire heating
  • the incompletely burned gas in the direct fire combustion exhaust gas undergoes oxygen-rich secondary combustion in the semi-sealed unit at the top of the jet preheating section, but the burning flame does not contact the strip steel, so it is effective Avoid overoxidation of the strip surface
  • the preheating temperature of the strip is higher.
  • the heating section adopts direct fire heating, due to the high heat transfer coefficient of direct fire preheating by high-temperature nitrogen and hydrogen protective gas injection, the preheated strip temperature can reach at least 350°C and above, which is higher than The strip temperature in the ordinary preheating section is at least 100°C higher;
  • the temperature of the direct fire combustion exhaust gas coming out of the injection direct fire preheating section of the present invention is usually much lower than 750°C (if a sufficient number of high-speed injection preheating units are arranged, it can even reach 200°C Directly discharged below), there is no need to mix cold air for secondary use outside the furnace or no need for secondary use at all.
  • the present invention designs a spray direct fire preheating device.
  • pre-oxidation and reduction treatment can be used on high-strength steel to improve the plateability of high-strength steel
  • Transverse magnetic induction heating is used to further rapidly improve high-temperature strip steel and can achieve ultra-high temperature annealing of high-strength steel;
  • the present invention is equipped with secondary reheating section equipment, which realizes two rises in strip temperature before hot-dip galvanizing, and can realize the rapid cooling of third-generation high-strength steel (QP steel) products to a lower temperature, and then immediately Rapidly heat to a higher temperature for long-term carbon redistribution treatment, and after the treatment is completed, quickly reheat to the hot-dip galvanizing pot temperature for a second time to perform galvanizing treatment;
  • QP steel third-generation high-strength steel
  • the hot-dip galvanizing high-strength steel production line of the present invention can simultaneously produce hot-dip galvanized products with two coating types: hot-dip pure zinc and alloyed hot-dip galvanizing.
  • Transverse magnetic induction heating is used for further rapid improvement of high-temperature strip steel, which can realize ultra-high temperature annealing of high-strength steel;
  • the strip soaking temperature can be quickly adjusted when the strip thickness specification changes, the target temperature changes, the unit speed changes and other working conditions change, which can reduce the quality loss caused by inconsistent strip temperatures;
  • Direct fire heating can be used to apply the pre-oxidation-reduction process, and the ultra-high-strength strip steel has good plating properties;
  • the rapid continuous strip steel withdrawal production line of the present invention can achieve the following purposes: when using direct fire heating, the waste heat of direct fire combustion exhaust gas can be fully utilized, the strip steel temperature can be quickly preheated to at least 350°C, and direct fire combustion can be avoided.
  • the exhaust gas directly contacts the strip steel for a long time in the preheating furnace, thereby avoiding the formation of an excessively thick oxide layer on the surface of the strip steel; when direct fire heating is not used, new heating technology is used to fully utilize the waste heat of the combustion exhaust gas and convert the combustion exhaust gas
  • the waste heat is basically transmitted to the strip steel, which improves the primary utilization rate of heat energy, so that the combustion exhaust gas can be directly discharged after fully heating the strip steel.
  • a rapid annealing strip steel production line which includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - leveling - outlet looper - coiling;
  • the central continuous post-processing station includes pre- Hot section, heating section, soaking section, slow cooling section, rapid cooling section, reheating section, over-aging section, final jet cooling section, final water cooling section;
  • the preheating section adopts a jet direct fire preheating device or jet radiation Composite heating device;
  • the heating section adopts direct fire heating section and/or radiant tube heating section;
  • the soaking section adopts radiant tube soaking or jet radiation composite heating device for soaking;
  • the rapid cooling section adopts high hydrogen cooling, Or aerosol cooling or water quenching cooling.
  • the present invention also designs a rapid annealing strip steel production line, which includes the following stations in sequence: uncoiling-welding-entry looper-cleaning-central continuous post-processing-flattening-exit loop-coiling; the central continuous post-processing station
  • the positions in sequence include preheating section, heating section, radiant tube soaking section, slow cooling section, rapid cooling section, reheating section, over-aging section, final jet cooling section, and final water cooling section;
  • the preheating section adopts jet direct fire Preheating device or jet radiation composite heating device;
  • the heating section adopts a direct fire heating section and/or a radiant tube heating section;
  • the rapid cooling section adopts high hydrogen cooling and aerosol cooling or water quenching cooling arranged in parallel, or gas Mist cooling and water quenching cooling are arranged in parallel and a connecting channel is provided between the mist cooling and water quenching cooling, or high hydrogen cooling, gas mist cooling and water quenching cooling are arranged in parallel and a connecting channel is provided between
  • an optional pickling section is set up after the final water cooling section.
  • the pickling section equipment When the strip passes through the pickling section equipment, it can be used for pickling the strip. When the strip does not need to be pickled, the strip can be bypassed without passing through. Pickling section equipment.
  • an optional flash plating section is provided after the pickling section.
  • the pickled steel strip can choose to enter the flash plating section to produce flash plating products such as flash nickel plating or flash zinc plating.
  • the strip can bypass the flash plating section.
  • a cleaning station is set up between the welding station and the entrance looper station.
  • the strip can be cleaned through the cleaning station equipment, or the cleaning station can be bypassed; preferably, the strip is cleaned at the entrance looper station.
  • Cleaning stations are set up at the front and back of the station. The strip is cleaned for the first time, enters the looper, then cleaned for the second time, and then enters the central continuous post-processing station.
  • a finishing station is set up before the coiling station, and the strip is finished and then coiled.
  • an intermediate looper station is provided before the leveling station.
  • a tensioning and straightening station is provided between the leveling station and the outlet looper station.
  • a surface post-processing station such as passivation or fingerprint resistance is set up between the flattening station and the outlet looper station.
  • the strip steel can choose to undergo surface treatment such as passivation or fingerprint resistance before entering the outlet looper; or, in Between the flattening station and the exit looper station, a tension and straightening station equipment and a surface post-treatment station such as passivation or fingerprint resistance are set up at the same time.
  • the strip can be selected for tension and straightening or/ and surface treatments such as passivation or fingerprint resistance before entering the exit looper.
  • the invention can change the radiant tube soaking section to a jet radiation composite heating device for soaking, thereby realizing rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • the injection direct-fire preheating section is used instead of the ordinary preheating section. Its significant features that are different from the ordinary preheating section are:
  • the combustion exhaust gas from the heating section passes through the heat exchanger chamber of the preheating section. During the passing process, the combustion exhaust gas from the heating section fully exchanges heat with the heat exchanger in the heat exchanger chamber to heat the nitrogen. Hydrogen protection gas is used, so the combustion exhaust gas of the heating section in the injection direct-fire preheating section is not always in direct contact with the strip (when the heating section is heated by direct fire, the injection direct-fire preheating section is only in direct contact with the high-temperature section for a short time and this When the exhaust gas is a reducing atmosphere or a slightly oxidizing atmosphere), it can avoid peroxidation of the strip surface;
  • the heating section uses direct fire heating
  • the incompletely burned gas in the direct fire combustion exhaust gas undergoes oxygen-rich secondary combustion in the semi-sealed unit at the top of the jet preheating section, but the burning flame does not contact the strip steel, so it is effective Avoid overoxidation of the strip surface
  • the preheating temperature of the strip is higher.
  • the heating section adopts direct fire heating, due to the high heat transfer coefficient of direct fire preheating by high-temperature nitrogen and hydrogen protective gas injection, the preheated strip temperature can reach at least 350°C and above, which is higher than The strip temperature in the ordinary preheating section is at least 100°C higher;
  • the temperature of the direct fire combustion exhaust gas coming out of the injection direct fire preheating section of the present invention is usually much lower than 750°C (if a sufficient number of high-speed injection preheating units are arranged, it can even reach 200°C Directly discharged below), there is no need to mix cold air for secondary use outside the furnace or no need for secondary use at all.
  • the jet radiation composite heating section equipment When direct fire heating is not used, the jet radiation composite heating section equipment is used to quickly heat the strip.
  • the heating equipment also uses the radiant tube combustion exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then The nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • the heat exchange efficiency is high.
  • the exhaust gas temperature can be directly utilized and then discharged below 250°C. Basically all the combustion heat is transferred to the heating of the strip.
  • the technical solution of the present invention can realize the continuous production of ultra-high-strength steel with three different surface states: cold rolling annealing, pickling and flash plating.
  • the strip soaking temperature can be quickly adjusted when the strip thickness specification changes, the target temperature changes, the unit speed changes and other working conditions change, which can reduce the quality caused by inconsistent strip temperatures. loss;
  • the application of rapid heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products, corresponding to 780MPa grade
  • the composition of the product can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving high-strength steel products. market competitiveness;
  • the rapid continuous withdrawal of high-strength steel strip production line of the present invention uses jet radiation composite heating and transverse magnetic induction heating to achieve rapid heating of the strip, and uses a high hydrogen cooling section or a mist cooling section or a water quenching cooling section to achieve rapid cooling of the strip and shorten the strip.
  • the heat treatment cycle time of steel; the application of this rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels, which can not only reduce the production cost of high-strength steel, but also improve the performance of various ultra-high-strength steels.
  • the mechanical properties and subsequent processing properties of the product (such as welding performance, coating performance); at the same time, the strip temperature is quickly heated to above 900°C to achieve ultra-high temperature annealing treatment of high-strength steel.
  • a rapid annealing high-strength strip steel production line which includes the following stations in sequence: uncoiling-welding-entry looper-cleaning-central continuous post-processing-flattening-exit loop-coiling; wherein, the central continuous post-processing station It sequentially includes a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section; the jet The radiation composite heating section installs the radiant tube inside the high-speed jet air box and quickly transfers the heat generated by the combustion gas of the radiant tube to the strip through two methods: high-speed and high-temperature jet and radiation to achieve rapid heating of the strip; the rapid cooling section It includes a high hydrogen cooling section, a mist cooling section or a water quenching cooling section; the soaking section adopts a radiant tube heating device or a jet radiation composite heating
  • the present invention also provides a rapid annealing high-strength steel strip production line, which includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein, the The central continuous post-processing station includes the jet radiation composite heating section, the radiant tube heating section, the transverse magnetic induction heating section, the soaking section, the slow cooling section, the rapid cooling section, the reheating section, the over-aging section, the final jet cooling section, and the final Water cooling section; the jet radiation composite plus In the hot section, the radiant tube is installed inside the high-speed jet air box, and the heat generated by the combustion gas of the radiant tube is quickly transferred to the strip through two methods: high-speed and high-temperature jet and radiation, so as to achieve rapid heating of the strip; the rapid cooling section includes high Hydrogen cooling section, mist cooling section or water quenching cooling section; the high hydrogen cooling section and the mist cooling section are arranged in parallel, or the
  • This production line simultaneously uses a jet radiation composite heating device + transverse magnetic induction heating section and a rapid cooling method of high hydrogen cooling section or mist cooling section or water quenching cooling section to perform rapid heating and rapid cooling to achieve ultra-high strength strip steel of continuous production.
  • the rapid annealing high-strength steel strip production line of the present invention includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein, the The central continuous post-processing station includes the jet radiation composite heating section, the radiant tube heating section, the transverse magnetic induction heating section, the radiant tube soaking section, the slow cooling section, the rapid cooling section, the reheating section, the over-aging section, and the final jet cooling section.
  • the jet radiation composite heating section installs the radiant tube inside the high-speed jet air box, and quickly transfers the heat generated by the combustion gas of the radiant tube to the strip through two methods of high-speed and high-temperature jet and radiation, realizing the strip steel Rapid heating;
  • the rapid cooling section includes an aerosol cooling section and a water quenching cooling section, the aerosol cooling section and the water quenching cooling section are arranged in parallel, and a connecting channel is provided between the aerosol cooling section and the water quenching cooling section; forming
  • the strip steel can be cooled by aerosol cooling first and then water quenching, or by three cooling modes: aerosol cooling only, or water quenching cooling only;
  • the soaking section adopts a radiant tube heating device or a jet radiation composite heating device; the transverse magnetic induction
  • the heating section is used to further rapidly increase the temperature of high-temperature strip steel.
  • the rapid cooling section also includes a high hydrogen cooling section, which is arranged in parallel with the aerosol cooling section; the high hydrogen cooling section is arranged in parallel with the aerosol cooling section + water quenching cooling section arranged in series, forming a Strip steel or select the fourth cooling mode for the high hydrogen cooling section only.
  • an optional pickling section is provided after the final water cooling section.
  • an optional flash plating section is provided after the pickling section.
  • a cleaning station is provided between the welding station and the entrance looper station.
  • a cleaning station is provided before and after the entrance looper station.
  • a finishing station is provided before the coiling station.
  • an intermediate looper station is provided before the leveling station.
  • a tensioning and straightening station is provided between the leveling station and the outlet looper station.
  • a surface post-treatment station such as passivation or fingerprint resistance is provided between the flattening station and the outlet looper station.
  • a tensioning and straightening station and a surface post-treatment station such as passivation or fingerprint resistance are simultaneously provided between the flattening station and the exit looper station.
  • This production line simultaneously uses a jet radiation composite heating device, a transverse magnetic induction heating section and a rapid cooling equipment such as a high hydrogen cooling section or a mist cooling section equipment or a water quenching cooling section equipment to perform rapid heating and rapid cooling processing to achieve ultra-high speed cooling. Continuous production of high-strength steel strips.
  • the present invention uses a jet radiation composite heating device to quickly heat the strip.
  • the heating equipment also uses the radiant tube combustion exhaust gas to heat recycled nitrogen and hydrogen protective gas or full hydrogen gas (hydrogen concentration 100 %), and then the nitrogen-hydrogen protective gas or full hydrogen gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • the heat exchange efficiency is high.
  • the exhaust gas temperature can be directly utilized and then discharged below 250°C, basically transmitting and utilizing all the combustion heat. Heating of strip steel.
  • the temperature of the high-temperature strip can be further rapidly increased, and the strip can be heated to above 900°C for annealing treatment.
  • the present invention realizes rapid heating and rapid cooling annealing of high-strength steel through the combined use of jet radiation composite heating equipment + transverse magnetic induction heating equipment and high-hydrogen rapid cooling equipment, and can improve the strength of high-strength steel.
  • the invention can realize the continuous production of ultra-high-strength steel with three different surface states: cold rolling annealing, pickling and flash plating.
  • the present invention realizes rapid heating and rapid cooling of strip steel, and can produce high-strength strip steel products with high strength levels;
  • the present invention can achieve ultra-high temperature annealing above 900°C;
  • the strip soaking temperature can be quickly adjusted when the strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change, which can reduce quality problems caused by inconsistent strip temperatures. loss;
  • the application of rapid heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products, corresponding to 780MPa grade
  • the composition of the product can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving high-strength steel products. market competitiveness;
  • the present invention realizes rapid heating and rapid cooling of ultra-high-strength steel and shortens the heat treatment cycle time of strip steel.
  • the rapid annealing ultra-high strength strip production line of the present invention can achieve the following purposes: when using direct fire heating, the waste heat of direct fire combustion exhaust gas can be fully utilized, the strip temperature can be quickly preheated to at least 350°C, and direct fire can be avoided
  • the combustion exhaust gas directly contacts the strip steel for a long time in the preheating furnace, thereby avoiding the formation of an excessively thick oxide layer on the surface of the strip steel; basically all the waste heat of the combustion exhaust gas is transferred to the strip steel, improving the primary utilization rate of heat energy, so that the combustion exhaust gas can fully heat the strip
  • the steel can be discharged directly without adding a boiler or superheated water heating device for secondary use, which significantly reduces investment and floor space.
  • ultra-high temperature heating Use transverse magnetic induction heating technology for high-temperature heating
  • the heating temperature of temperate strip steel is further rapidly increased to achieve ultra-high temperature annealing of high-strength strip steel and improve energy utilization.
  • rapid heating and rapid cooling of ultra-high-strength steel can be achieved to shorten the heat treatment cycle time of strip steel; the application of rapid heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced products with higher strength levels.
  • High-strength steel products can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving the market competitiveness of high-strength steel products.
  • a rapid annealing ultra-high strength strip production line which includes the following stations in sequence: uncoiling-welding-entry looper-cleaning-central continuous post-processing-flattening-exit loop-coiling; wherein, the central continuous post-processing station
  • the positions include the jet direct fire preheating section, the direct fire heating section, the radiant tube heating section, the transverse magnetic induction heating section, the soaking section, the slow cooling section, the rapid cooling section, the reheating section, the over-aging section, and the final jet cooling section.
  • the final water cooling section; the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section; the rapid cooling section adopts a high hydrogen cooling section, aerosol cooling section or water quenching cooling section; or, a high hydrogen cooling section Arranged in parallel with the aerosol cooling section or water quenching cooling section; or, the aerosol cooling section and the water quenching cooling section are arranged in parallel, and a connecting channel is provided between the aerosol cooling section and the water quenching cooling section; or, the high hydrogen cooling section , the aerosol cooling section and the water quenching cooling section are arranged in parallel, and a connecting channel is provided between the aerosol cooling section and the water quenching cooling section, and the high hydrogen cooling section is connected to the reheating section.
  • an optional pickling section is provided after the final water cooling section, and the strip can choose to pass through the pickling section or bypass the pickling section.
  • an optional flash plating section is also provided after the pickling section. After pickling the steel strip, you can choose to perform flash nickel plating or flash zinc plating, or you can skip the flash plating section and directly produce pickled surface products.
  • a cleaning station is set up between the welding station and the entrance looper station.
  • a cleaning station is set up before and after the entrance looper station; the strip is cleaned for the first time, enters the looper, and then Clean for the second time and then enter the central continuous post-processing station.
  • a finishing station is set up before the coiling station to finish the strip before coiling it.
  • an intermediate looper station is set up before the leveling station. After central continuous post-processing of the strip, it enters the central looper and then enters leveling. This can achieve central continuous post-processing without slowing down and replace the work roll of the leveling machine.
  • a tensioning and straightening station is provided between the flattening station and the outlet looper station, and the strip can optionally undergo tensioning and straightening treatment before entering the outlet looper.
  • a surface post-processing station such as passivation or fingerprint resistance is set up between the flattening station and the outlet looper station.
  • the strip steel can choose to undergo surface treatment such as passivation or fingerprint resistance before entering the outlet looper.
  • a tension and straightening station and a surface post-treatment station such as passivation or fingerprint resistance are provided between the flattening station and the exit looper station.
  • the strip steel can be optionally subjected to tension and straightening or/and passivation or fingerprint resistance. Post-processing then enters the outlet looper.
  • the combustion exhaust gas from the heating section passes through the heat exchanger chamber of the preheating section. During the passing process, the combustion exhaust gas from the heating section fully exchanges heat with the heat exchanger in the heat exchanger chamber to heat the nitrogen. Hydrogen protection gas is used, so the combustion exhaust gas of the heating section in the injection direct-fire preheating section is not always in direct contact with the strip (when the heating section is heated by direct fire, the injection direct-fire preheating section is only in direct contact with the high-temperature section for a short time and this When the exhaust gas is a reducing atmosphere or a slightly oxidizing atmosphere), it can avoid peroxidation of the strip surface;
  • the heating section uses direct fire heating
  • the incompletely burned gas in the direct fire combustion exhaust gas undergoes oxygen-rich secondary combustion in the semi-sealed unit at the top of the jet preheating section, but the burning flame does not contact the strip steel, so it is effective Avoid overoxidation of the strip surface
  • the preheating temperature of the strip is higher.
  • the heating section adopts direct fire heating, due to the high heat transfer coefficient of direct fire preheating by high-temperature nitrogen and hydrogen protective gas injection, the preheated strip temperature can reach at least 350°C and above, which is higher than The strip temperature in the ordinary preheating section is at least 100°C higher;
  • the temperature of the direct fire combustion exhaust gas coming out of the injection direct fire preheating section of the present invention is usually much lower than 750°C (if a sufficient number of high-speed injection preheating units are arranged, it can even reach 200°C Directly discharged below), there is no need to mix cold air for secondary use outside the furnace or no need for secondary use at all.
  • Transverse magnetic induction heating is used to further rapidly improve high-temperature strip steel and can achieve ultra-high temperature annealing of high-strength steel;
  • the soaking section of the present invention adopts a jet radiation composite soaking section to realize rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • the technical solution of the present invention can also realize the continuous production of ultra-high-strength steel with three different surface states: cold rolling annealing, pickling and flash plating.
  • the strip temperature is high after preheating, and the primary utilization rate of heat energy is high;
  • the present invention realizes rapid heating and rapid cooling of strip steel, and can produce strip steel products with high strength levels;
  • the strip soaking temperature can be quickly adjusted when the strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change, which can reduce quality problems caused by inconsistent strip temperatures. damage lose;
  • the application of the rapid heating, rapid cooling and rapid heat treatment process technology of the present invention can use lower alloy compositions to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products.
  • the composition of 780MPa grade products can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving high-strength steel products.
  • the present invention realizes rapid heating and rapid cooling of ultra-high-strength steel and shortens the heat treatment cycle time of strip steel;
  • the technical solution of the present invention can realize the continuous production of ultra-high-strength steel with three different surface states: cold rolling annealing, pickling and flash plating.
  • the ultra-short flow dual-purpose strip production line of the present invention can flexibly select the production of continuous withdrawal products or hot-dip galvanized products according to market demand; the unit occupies a small area; the number of crew members is small; the gas consumption is small; and the overall operation of the unit is reduced Cost; through the use of rapid heating technology, fine-grained austenite can be generated during the heating process of high-strength steel, thereby further improving the strength of high-strength steel; rapid heating and rapid cooling of high-strength steel can be achieved, and the strip life can be shortened.
  • Heat treatment cycle time the application of rapid heating, rapid cooling and rapid heat treatment process technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels, which can not only reduce the production cost of high-strength steel, but also improve various high-strength steel products.
  • the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of steel products can significantly improve the market competitiveness of high-strength steel products.
  • An ultra-short process dual-purpose strip production line which includes the following stations in sequence: uncoiling-welding-entry looper-central continuous post-processing-flattening-exit loop-coiling; wherein, the central continuous post-processing station It includes in turn the transverse magnetic induction heating section, the radiant tube soaking section, the gas mist cooling section or/and the water quenching cooling section, the pickling section, the reheating section, and the parallel arrangement (furnace nose section + zinc pot section + air knife section + plating Post-cooling section) and (moving channel section + over-aging section + final jet cooling section), and final water-cooling section.
  • the strip adopts transverse magnetic induction heating for rapid heating, and gas mist cooling or/and water quenching cooling is selected for rapid cooling, realizing the rapid heat treatment process of rapid heating and rapid cooling of the strip.
  • the strip In the aerosol cooling section or/and water quenching cooling section, the strip can be cooled by aerosol cooling or water quenching, or the strip can be cooled by aerosol cooling first and then by water quenching.
  • (furnace nose section + zinc pot section + air knife section + post-plating cooling section) is arranged in parallel with (moving channel section + overaging section + final jet cooling section).
  • the strip steel can choose to go through the furnace nose section + zinc pot section + gas Tool section + post-plating cooling section, that is, the hot-dip galvanizing process path is used to produce hot-dip pure zinc products.
  • You can also choose to use the moving channel section + overaging section + final jet cooling section, that is, the continuous retreat process path to produce continuous annealed products; the moving channel section is connected in parallel with the furnace nose section, and the moving channel section can be moved to an online position or to an offline position, and the continuous retreat process path and hot plating can be achieved by cutting the strip and re-threading it. Switching of pure zinc process path.
  • An ultra-short process dual-purpose strip production line which includes the following stations in sequence: uncoiling-welding-entry looper-central continuous post-processing-flattening-exit loop-coiling; wherein, the central continuous post-processing station It includes in turn the transverse magnetic induction heating section, the radiant tube soaking section, the gas mist cooling section or/and the water quenching cooling section, the pickling section, the reheating section, and the parallel arrangement (furnace nose section + zinc pot section + air knife section + alloy Heating section + alloying soaking section + post-plating cooling section) and (moving channel section + over-aging section + final jet cooling section), and final water cooling section.
  • the strip adopts transverse magnetic induction heating for rapid heating, and gas mist cooling or/and water quenching cooling is selected for rapid cooling, realizing the rapid heat treatment process of rapid heating and rapid cooling of the strip.
  • the strip In the aerosol cooling section or/and water quenching cooling section, the strip can be cooled by aerosol cooling or water quenching, or the strip can be cooled by aerosol cooling first and then by water quenching.
  • the invention designs a parallel arrangement (furnace nose section + zinc pot section + air knife section + alloying heating section + alloying soaking section + post-plating cooling section) and (moving channel section + overaging section + final jet cooling section),
  • the strip steel can choose to go through the furnace nose section + zinc pot section + air knife section + alloying heating section + alloying soaking section + post-plating cooling section, that is, the alloyed hot-dip galvanizing process path is used to produce alloyed hot-dip products.
  • the alloying heating section + alloying soaking section are not started and put into operation, the strip steel passes through these process sections to produce hot-dip pure zinc products.
  • You can also choose to use the moving channel section + overaging section + final jet cooling section, that is, the continuous annealing process path is used to produce continuous annealed products.
  • the mobile channel section and the furnace nose section are designed in parallel.
  • the mobile channel section can be moved to the online position or to the offline position.
  • the continuous withdrawal process path and the hot-dip galvanizing process path can be switched. .
  • An ultra-short process dual-purpose strip production line which includes the following stations in sequence: uncoiling-welding-entry looper-central continuous post-processing-flattening-exit loop-coiling; wherein, the central continuous post-processing station It includes in turn the transverse magnetic induction heating section, the radiant tube soaking section, the gas mist cooling section or/and the water quenching cooling section, the pickling section, the reheating section, the balanced insulation section, the secondary reheating section, and the parallel arrangement (furnace nose section) + zinc pot section + air knife section + post-plating cooling section) and (moving channel section + over-aging section + final jet cooling section), and final water cooling section.
  • the strip adopts transverse magnetic induction heating for rapid heating, and gas mist cooling or/and water quenching cooling is selected for rapid cooling, realizing the rapid heat treatment process of rapid heating and rapid cooling of the strip.
  • the design of the invention adopts a balanced insulation section + a secondary reheating section, which can realize the secondary reheating process of high-strength steel such as QP steel.
  • the strip In the aerosol cooling section or/and water quenching cooling section, the strip can be cooled by aerosol cooling or water quenching, or the strip can be cooled by aerosol cooling first and then by water quenching.
  • the invention designs a parallel arrangement (furnace nose section + zinc pot section + air knife section + post-plating cooling section) and (moving channel section + outdated Effective section + final jet cooling section), the strip steel can choose to go through the furnace nose section + zinc pot section + air knife section + post-plating cooling section, that is, use the hot-dip galvanizing process path to produce hot-dip pure zinc products, or you can choose to go through the hot-dip galvanizing process path.
  • Moving channel section + over-aging section + final jet cooling section that is, the continuous annealing process path is used to produce continuously annealed products.
  • the mobile channel section and the furnace nose section are designed in parallel.
  • the mobile channel section can be moved to the online position or to the offline position. By cutting the strip and rethreading the strip, the continuous withdrawal process path and the hot-dip pure zinc process path can be realized. switch.
  • An ultra-short process dual-purpose strip production line which includes the following stations in sequence: uncoiling-welding-entry looper-central continuous post-processing-flattening-exit loop-coiling; wherein, the central continuous post-processing station It includes in turn the transverse magnetic induction heating section, the radiant tube soaking section, the gas mist cooling section or/and the water quenching cooling section, the pickling section, the reheating section, the balanced insulation section, the secondary reheating section, and the parallel arrangement (furnace nose section) + zinc pot section + air knife section + alloying heating section + alloying soaking section + post-plating cooling section) and (moving channel section + overaging section + final air jet cooling section), and final water cooling section.
  • the central continuous post-processing station It includes in turn the transverse magnetic induction heating section, the radiant tube soaking section, the gas mist cooling section or/and the water quenching cooling section, the pickling section, the reheating section, the balanced insulation section, the secondary reheating section
  • the strip adopts transverse magnetic induction heating for rapid heating, and gas mist cooling or/and water quenching cooling is selected for rapid cooling, realizing the rapid heat treatment process of rapid heating and rapid cooling of the strip.
  • the design of the present invention adopts a balanced insulation section + a secondary reheating section, which can realize the secondary reheating process of high-strength steel such as QP steel; it is also characterized by the gas mist cooling section or/and water quenching cooling section, and the strip steel can You can choose aerosol cooling, water quenching cooling, or aerosol cooling first and then water quenching cooling.
  • the invention designs a parallel arrangement (furnace nose section + zinc pot section + air knife section + alloying heating section + alloying soaking section + post-plating cooling section) and (moving channel section + overaging section + final jet cooling section),
  • the strip steel can choose to go through the furnace nose section + zinc pot section + air knife section + alloying heating section + alloying soaking section + post-plating cooling section, that is, the alloyed hot-dip galvanizing process path is used to produce alloyed hot-dip galvanized products.
  • the strip steel passes through these process sections to produce hot-dip pure zinc products, or you can choose to use the moving channel section + over-aging section + final jet
  • the cooling section uses the continuous annealing process path to produce continuously annealed products.
  • the mobile channel section and the furnace nose section are designed in parallel.
  • the mobile channel section can be moved to the online position or to the offline position.
  • the continuous withdrawal process path and the hot-dip galvanizing process path can be switched. .
  • a movable post-plating quick cooling section is arranged after the air knife section.
  • the movable post-plating quick cooling section is configured for online and offline switching, and is arranged in parallel with the alloying heating section (designed to be movable).
  • the alloying heating section designed to be movable.
  • the movable post-plating quick cooling section is online to quickly cool the plated strip.
  • the alloying heating section is offline; when producing alloyed hot-dip galvanized products, the movable post-plating quick cooling section is offline. At this time, the alloying heating section is online and the strip steel is alloyed and heated.
  • an optional cleaning station is provided between the welding station and the entrance looper station.
  • the strip steel can be cleaned through the cleaning station or bypassed and skipped.
  • the cleaning station is set after the entrance looper station, and the strip steel can choose to be cleaned through the cleaning station, or it can bypass the cleaning station.
  • cleaning stations are set up before and after the entrance looper station to perform secondary cleaning of the strip to further improve the surface quality of the strip.
  • a longitudinal magnetic induction heating section is arranged before the transverse magnetic induction heating section.
  • the strip passes through the longitudinal magnetic induction heating section first. You can choose longitudinal magnetic induction heating, or you can pass through the longitudinal magnetic induction heating section and directly enter the transverse magnetic induction heating section for heating.
  • a flash iron or nickel plating station is provided after the pickling section, and the strip after pickling can be flash plated with iron or nickel to improve the plateability of the strip.
  • a finishing station is set up before the coiling station to finish the strip before coiling it.
  • an intermediate looper station is set up before the smoothing station so that the smoothing machine can replace the work rolls online without losing the quality of the strip.
  • a tensioning and straightening station is provided between the flattening station and the outlet looper station, and the strip can be stretched and straightened before entering the outlet looper.
  • a surface post-processing station such as passivation or fingerprint resistance is set up between the flattening station and the outlet looper station.
  • the strip steel can undergo surface post-processing such as passivation or fingerprint resistance before entering the outlet looper.
  • a tensioning and straightening station and a corresponding surface post-treatment station such as passivation or fingerprint resistance are simultaneously provided between the flattening station and the exit looper station.
  • the strip steel can be subjected to surface post-treatment such as passivation or fingerprint resistance. , and then enter the exit looper.
  • the production line has low CO2 and NOx emissions and is suitable for construction in urban steel plants;
  • the production line has low CO2 and NOx emissions and is suitable for construction in urban steel plants;
  • the application of rapid heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products; 780MPa grade products
  • the composition can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products;
  • the ultra-short process hot-dip pure zinc high-strength strip production line of the present invention can achieve the following purposes: 1) reduce the floor space of the unit; 2) reduce the number of crew members; 3) reduce the overall operating cost of the unit; 4) use rapid heating technology Using it, fine-grained austenite can be generated during the heating process of high-strength steel, which can further improve the strength of high-strength steel; 5) realize rapid heating and ultra-fast cooling of high-strength steel, shorten the heat treatment cycle time of strip steel, and can Produce ultra-high-strength steel products with high martensite content; 6)
  • the application of rapid heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels, which can not only reduce the Steel production costs can also be improved, and the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various high-strength steel products can be improved, significantly improving the market competitiveness of high-strength
  • An ultra-short process hot-dip pure zinc high-strength strip steel production line which includes the following stations in sequence: uncoiling - welding - entrance looper - central continuous post-processing - outlet looper - flattening - coiling; wherein, the central continuous post
  • the processing stations include a rapid heating station, a soaking station, a rapid cooling station, a surface modification station and a hot-dip pure zinc station; the rapid heating station adopts direct fire heating equipment; the soaking station The station adopts radiant tube heat soaking equipment or jet radiation composite heat soaking equipment; the rapid cooling station adopts aerosol cooling equipment or water quenching cooling equipment; the surface modification station adopts pickling equipment; the hot-dip pure zinc
  • the workstations are successively set up with a reheating section, a furnace nose section, a zinc pot section, an air knife section, a post-plating cooling section and a final water cooling section; at this point, direct fire heating equipment and aerosol cooling equipment are used on the same production line for rapid heating,
  • the rapid heating station is equipped with direct fire heating equipment and transverse magnetic induction heating equipment in sequence.
  • optional flash iron plating or flash nickel plating equipment is provided after the pickling section, followed by the subsequent hot-dip pure zinc station.
  • a moving post-plating cooling section can be optionally provided between the air knife section and the post-plating cooling section.
  • Quick cooling equipment Preferably, in the hot-dip pure zinc station, a moving post-plating cooling section can be optionally provided between the air knife section and the post-plating cooling section.
  • the hot-dip pure galvanizing station is replaced with an alloyed hot-dip galvanizing station, that is, an alloying heating section and an alloying soaking section are provided between the air knife section and the post-plating cooling section, so that production can be achieved.
  • Hot-dip pure zinc products can also be used to produce alloyed hot-dip galvanized products.
  • the hot-dip galvanizing station is equipped with optional mobile post-plating quick cooling section equipment in parallel with the alloying heating section after the air knife section.
  • a cleaning station is provided between the welding station and the inlet looper station.
  • a cleaning station is provided after the inlet looper station.
  • a central looper device is installed in front of the leveling station.
  • a finishing station equipment is installed between the coiling station and the outlet looper station, and the strip is coiled after finishing.
  • a tensioning and straightening station is provided between the leveling station and the outlet looper station.
  • surface post-processing equipment such as passivation or fingerprint resistance is provided between the flattening station and the outlet looper station.
  • a tensioning and straightening station and a surface post-treatment station such as passivation or fingerprint resistance are simultaneously provided between the flattening station and the exit looper station.
  • the soaking station uses electric radiation tube soaking equipment, resistance wire soaking equipment or resistance belt soaking equipment instead of the radiation tube soaking equipment or the jet radiation composite soaking equipment.
  • pre-oxidation and reduction treatment can be used on ultra-high-strength steel to improve the plateability of high-strength steel.
  • the technical solution of the present invention can quickly heat strip steel to 900°C or even above by using transverse magnetic induction heating equipment and direct fire heating equipment in series.
  • the alloyed hot-dip galvanizing high-strength steel production line in the technical solution of the present invention can simultaneously produce hot-dip galvanized products with two coating types: hot-dip pure zinc and alloyed hot-dip galvanizing.
  • the unit is short in length and occupies a small area.
  • the crew configuration is small, and a crew of 4 people can operate it.
  • the application of rapid heating, ultra-rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products, corresponding to 780MPa
  • the composition of grade products can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving high-strength steel Product market competitiveness.
  • the heating temperature of strip steel can be heated to 900°C or even above, thereby realizing ultra-high temperature heating annealing treatment of high-strength steel.
  • the ultra-short-process ultra-high-strength strip steel production line of the present invention can achieve the following purposes: 1) reduce the floor space of the unit; 2) reduce the number of crew members; 3) reduce the overall operating cost of the unit; 4) through the use of rapid heating technology, During the heating process of ultra-high-strength steel, fine-grained austenite is generated, which can further improve the strength of ultra-high-strength steel; 5) Realize rapid heating and rapid cooling of ultra-high-strength steel, and shorten the heat treatment cycle time of strip steel; 6) The application of rapid heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • An ultra-short flow ultra-high-strength strip steel production line which includes the following stations in sequence: uncoiling - welding - entrance looper - central continuous post-processing - outlet looper - coiling; wherein, the central continuous post-processing station includes in sequence Rapid heating station, soaking station and rapid cooling station; the rapid heating station adopts jet radiation composite heating device; the soaking station adopts radiant tube heating equipment, jet radiation composite heating equipment, electric radiation Pipe heating equipment, resistance wire heating equipment or resistance band heating equipment; the rapid cooling station adopts high hydrogen cooling equipment, aerosol cooling equipment or water quenching cooling equipment.
  • the rapid heating station adopts a jet radiation composite heating device and a transverse magnetic induction heating device arranged in series
  • the rapid cooling station adopts aerosol cooling equipment and water quenching cooling equipment arranged in series or parallel, or is high hydrogen cooling.
  • the equipment is arranged in parallel with the water quenching cooling equipment, or the high hydrogen cooling equipment and the aerosol cooling equipment are arranged in parallel, or the high hydrogen cooling equipment, the aerosol cooling equipment and the water quenching cooling equipment are arranged in parallel.
  • an optional cleaning station is provided between the welding station and the inlet looper station.
  • the rapid heating station uses optional direct fire heating equipment set in parallel and air jet radiation composite heating device + transverse magnetic induction heating equipment set in series.
  • the strip can choose to go through the direct fire heating equipment first and then the air jet set in series. Radiation composite heating device + transverse magnetic induction heating equipment for heating, or you can bypass the direct fire heating equipment and directly enter the series-connected jet radiation composite heating device + transverse magnetic induction heating equipment for heating.
  • the rapid heating station adopts optional longitudinal magnetic induction heating equipment and a jet radiation composite heating device + transverse magnetic induction heating equipment arranged in parallel or in series.
  • the strip can be heated by the longitudinal magnetic induction heating equipment first, or it can be heated by the side. By skipping the longitudinal magnetic induction heating equipment and directly entering the jet radiation composite heating device + transverse magnetic induction heating arranged in series for heating.
  • optional pickling section equipment is installed in front of the coiling station and behind the central continuous post-processing station.
  • the pickling section When the strip passes through the pickling section, it can be used for pickling the strip.
  • the strip does not need to be pickled, At this time, the strip can be bypassed without passing through the pickling section.
  • an optional flash plating section is provided after the pickling section and before the coiling station.
  • the pickled strip steel can optionally enter the flash plating section to produce flash plating products such as nickel or zinc.
  • flash plating products such as nickel or zinc.
  • a leveling station is set up before the coiling station to level the strip before coiling it.
  • a finishing station is provided between the coiling station and the smoothing station. After the strip is flattened, it is finished and then coiled.
  • electric radiant tube heating equipment, resistance wire heating equipment, or resistance band heating equipment are used instead of radiant tube heating equipment or jet radiation composite heating equipment to build the production line of the present invention to produce ultra-high-strength products in places where gas is not available. Strip steel.
  • an optional cleaning station is provided between the welding station and the entrance looper station.
  • the strip steel can be cleaned through the cleaning station or bypassed and skipped. It is further preferred to set the optional cleaning station immediately after the entrance looper station, so that when the strip enters the cleaning station equipment for cleaning, constant speed cleaning can be achieved and stable strip surface cleaning quality can be maintained.
  • the equipment of the present invention is configured simply and occupies a small area
  • the ultra-high-strength steel production line of the present invention has low comprehensive operating costs
  • the ultra-high-strength steel production line of the present invention itself achieves small or even zero emissions of CO2 and NOx, and is very suitable for construction in urban steel plants;
  • the present invention can quickly and economically heat strip steel to a temperature of 900°C or above through the series connection of direct fire heating equipment and jet radiation composite heating device;
  • the present invention can realize the continuous production of ultra-high-strength steel with three different surface states: cold rolling, pickling and flash plating.
  • the length of the unit can be shortened by about 1/3 compared with the length of the existing production line;
  • the application of rapid heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products; 780MPa grade products
  • the composition can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving the performance of high-strength steel products.
  • Market Competitiveness ;
  • the heating temperature of strip steel can be heated to 900°C or even above, thereby achieving ultra-high-temperature heating annealing treatment of ultra-high-strength steel.
  • the ultra-short process hot-dip galvanizing high-strength strip steel production line of the present invention can achieve the following purposes: 1) reduce the floor space of the unit; 2) reduce the number of crew members; 3) reduce the overall operating cost of the unit; 4) through the use of rapid heating technology , can generate fine-grained austenite during the heating process of high-strength steel, thereby further improving the strength of high-strength steel; 5) realize rapid heating and rapid cooling of high-strength steel, and shorten the heat treatment cycle time of strip steel; 6) rapid The application of heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the heating temperature of strip steel can be heated to 900°C or even above, thereby achieving thermal Ultra-high temperature heat annealing treatment of galvanized high-strength steel.
  • An ultra-short process hot-dip pure zinc high-strength strip steel production line which includes the following stations in sequence: uncoiling - welding - entrance looper - central continuous post-processing - outlet looper - flattening - coiling; wherein, the central continuous post
  • the processing station includes a rapid heating section, a soaking section, a rapid cooling section and a hot-dip galvanizing section in sequence; the rapid heating section adopts direct fire heating; or direct fire heating and transverse magnetic induction heating are arranged in series; or direct fire heating, Jet radiation composite heating and transverse magnetic induction heating are arranged in series; the soaking section adopts jet radiation composite soaking, electric radiant tube soaking, resistance wire soaking or resistance band soaking; the rapid cooling section uses high hydrogen cooling;
  • the hot-dip galvanizing section is equipped with furnace nose, zinc pot, air knife, post-plating cooling equipment and final water cooling equipment.
  • alloying heating equipment and alloying heat soaking equipment are installed between the air knife and the post-plating cooling equipment to realize the production of alloyed hot-dip galvanizing products.
  • optional mobile post-plating quick cooling equipment is provided after the air knife and in front of the post-plating cooling equipment.
  • an optional cleaning station is set up between the welding station and the entrance looper station.
  • the strip can be cleaned through the cleaning station, or the cleaning station can be bypassed; or, the entrance looper station
  • An optional cleaning station is set up after the strip, so that when the strip enters the cleaning station for cleaning, constant speed cleaning can be achieved and stable strip surface cleaning quality can be maintained.
  • a central looper station is provided before the leveling station and after the central continuous post-processing station.
  • a finishing station is provided between the coiling station and the outlet looper station, and the strip is coiled after finishing.
  • a tensioning and straightening station is provided between the flattening station and the outlet looper station, and the strip can optionally undergo tensioning and straightening treatment before entering the outlet looper station.
  • a surface post-processing station such as passivation or fingerprint resistance is set up between the flattening station and the outlet looper station.
  • the strip steel can choose to undergo surface treatment such as passivation or fingerprint resistance before entering the outlet looper; or, in There is also a tension and straightening station and a surface post-treatment station such as passivation or fingerprint resistance between the flattening station and the exit looper station.
  • the strip steel can choose to undergo surface treatment such as tension and straightening or/and passivation or fingerprint resistance. Enter the exit looper station.
  • the electric radiant tube soaking section or the resistance wire soaking section or the resistance band soaking section is used instead of the jet radiation composite soaking section to build the production line of the present invention to produce hot-dip galvanized high-strength strip steel in places where gas supply is tight.
  • the equipment of the present invention is configured simply and occupies a small area
  • the ultra-high-strength steel production line of the present invention has low comprehensive operating costs
  • the present invention can use pre-oxidation-reduction treatment on high-strength steel to improve the plateability of high-strength steel;
  • the present invention realizes the rapid heating and rapid cooling annealing treatment of high-strength steel through the combined use of direct fire heating equipment, transverse magnetic induction heating equipment, jet radiation composite heating/uniform heat device and high hydrogen rapid cooling equipment, and reduces the annealing process.
  • the enrichment of strengthening elements such as Si and Mn in the medium substrate on the surface of the substrate further improves the plateability of high-strength steel;
  • the present invention can quickly heat strip steel to 900°C or even above through the series use of transverse magnetic induction heating equipment, direct fire heating equipment, and jet radiation composite heating/uniform heat devices;
  • the alloyed hot-dip galvanizing high-strength steel production line of the present invention can simultaneously produce hot-dip galvanized products with two coating types: hot-dip pure zinc and alloyed hot-dip galvanizing.
  • the unit is short in length and occupies a small area
  • the application of rapid heating, rapid cooling and rapid heat treatment technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products, corresponding to 780MPa grade
  • the composition of the product can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving high-strength steel products. market competitiveness;
  • the heating temperature of strip steel can be heated to 900°C or even above, thereby realizing ultra-high temperature heating annealing treatment of high-strength steel.
  • the flexible cold-rolled strip post-processing production line of the present invention which is suitable for producing a variety of high-strength steels, can achieve the following purposes: 1) Fully utilize the waste heat of radiant tube combustion exhaust gas, and can quickly preheat the strip temperature to at least 250°C; 2) After the radiant tube combustion exhaust gas is fully preheated, the temperature of the steel is significantly reduced and can be directly discharged.
  • the rapid heating technology of the present invention combined with the application of rapid cooling technology can use lower alloy components to produce various advanced high-strength steel products with higher strength levels. Not only can Reducing production costs can also improve the mechanical properties of various ultra-high-strength steel products.
  • a flexible cold-rolled strip post-processing production line suitable for producing a variety of high-strength steels which includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - intermediate looper - smoothing - outlet loop Set-finishing-coiling; wherein, the central continuous post-processing station includes a jet radiant tube preheating section, a radiant tube heating section, an optional transverse magnetic induction heating section or a muffle furnace section, and a jet radiation tube arranged in parallel.
  • the rapid cooling section includes high hydrogen cooling or/and aerosol cooling or/and water quenching cooling section;
  • the reheating section is followed by a furnace nose section, Zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section, and final water cooling section; Or, connect to the final water-cooling section through a moving channel, an over-aging section, and a final jet cooling section; after the final water-cooling section, you can choose to set up a pickling section or a pickling section + a flash plating section; the strip can choose to go through the pickling section.
  • the heating section of the radiant tube burns gaseous fuels such as natural gas, liquefied petroleum gas, or coal gas, and produces high-temperature waste gas during the combustion process.
  • the preheating section of the radiant tube uses the combustion waste gas in the heating section or/and the soaking section to exchange heat in the furnace for heating and recycling.
  • the nitrogen and hydrogen protective gas is then sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • the radiant tube heating section is connected in series with (the optional transverse magnetic induction heating section or muffle furnace section set in parallel);
  • the jet radiation composite soaking section adopts a combination of forced convection and radiation to quickly soak the strip, improve the uniformity of the strip temperature and realize rapid adjustment of the strip soaking temperature;
  • the cold-rolled strip post-processing production line adopts While spraying the radiant tube preheating section, rapid cooling is performed, then reheated, and then galvanized or over-aged;
  • the furnace nose section is arranged in parallel with the moving channel, and the strip passes backward from the furnace nose section through the production heat.
  • the strip steel passes through the moving channel to produce cold-rolled annealing, or pickling or flash plating products; so far, the processing line has at least three or more optional process paths, which can Realize the production of five different varieties of high-strength steel including cold rolling annealing, pickling, flash plating, hot-dip pure zinc and alloyed hot-dip galvanizing.
  • an optional tensioning and straightening station and/or a surface post-treatment station such as passivation or fingerprint resistance are arranged between the flattening station and the exit looper station, which can perform tension-levelling and/or surface post-processing on the strip. deal with.
  • the muffle furnace section equipment is equipped with sealing devices at the front and rear, and the muffle furnace section equipment is also equipped with an atmosphere adjustment device, in which the hydrogen content, oxygen content and dew point can be individually adjusted and controlled.
  • a balanced insulation section equipment is also arranged between the reheating section and the furnace nose section, and the strip steel is subjected to insulation treatment before hot-dip galvanizing.
  • a mobile post-plating quick cooling section equipment is also arranged between the air knife section and the post-plating cooling section.
  • the mobile post-plating quick cooling section is arranged in parallel with the alloying heating equipment to achieve hot-dip pure zinc high-strength steel products with post-plating strips. Rapid cooling of steel; preferably, a mobile post-plating rapid cooling section equipment is installed within 10 meters above the air knife section.
  • a secondary reheating section equipment is arranged after the balanced heat preservation section to reheat the balanced heat preservation strip steel twice, and then perform hot-dip galvanizing or over-aging treatment.
  • pickling section equipment is arranged between the rapid cooling section and the reheating section.
  • the pickling section equipment includes a pickling unit, a hot water brushing unit, a hot water rinsing unit, and a hot air drying unit to achieve strip surface cleanliness.
  • Pickling can be used to remove the oxide layer on the surface of strip steel after gas mist cooling or/and water quenching cooling.
  • hot-dip pure zinc or alloyed hot-dip galvanizing products it can also improve the reliability of high-strength strip steel, especially ultra-high-strength strip steel. plating properties.
  • flash iron or flash nickel plating equipment is arranged after the pickling section, and then reheated to further improve the plateability of the ultra-high strength strip.
  • the mobile post-plating rapid cooling section adopts mobile jet rapid cooling equipment or mobile mist cooling equipment.
  • the flexible cold-rolling post-processing production line of the present invention suitable for producing a variety of ultra-high-strength strip steel can achieve: 1) full utilization of the waste heat of the radiant tube combustion exhaust gas, and can quickly preheat the strip temperature to at least 250°C; 2) ) After the radiant tube combustion exhaust gas is fully preheated, the temperature of the steel is significantly reduced and can be directly discharged.
  • the waste heat of the radiant tube combustion exhaust gas is basically transmitted When it reaches the strip steel, the primary utilization rate of heat energy is high; 4) Rapid heating is achieved during ultra-high temperature and the heat energy utilization rate is improved; 5) The annealing heating temperature of the strip steel can be quickly adjusted; 6)
  • the flexible high-strength steel special production line can be flexibly It produces various cold-rolled annealed, hot-dip pure zinc (GI), alloyed hot-dip galvanized (GA), pickling, cold-rolled surface flash nickel plating or flash zinc plating and other new flash plating products, so the production line can better Meet market needs; 7) The plateability of ultra-high-strength steel products can be greatly improved, so the surface quality of ultra-high-strength hot-dip products can also be significantly improved; 8)
  • the present invention combined with the application of rapid cooling technology, can use lower alloys Ingredients produce various advanced high-
  • a flexible cold-rolling post-processing production line suitable for producing a variety of ultra-high-strength steel strips which includes the following stations in sequence: uncoiling-welding-entry looper-cleaning-central continuous post-processing-intermediate looper-smoothing-export Looper - finishing - coiling;
  • the central continuous post-processing station includes a jet radiant tube preheating section, a radiant tube heating section, a parallel and optional transverse magnetic induction heating section or a muffle furnace section, and a radiant tube section.
  • the hot section, slow cooling section, rapid cooling section, and reheating section are equipped with two parallel paths starting from the reheating section.
  • One line is the furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section,
  • the post-plating cooling section is connected to the final water-cooling section;
  • the other section is the moving channel section, the over-aging section, and the final jet cooling section, which is connected to the final water-cooling section; after the final water-cooling section, an optional pickling section and an optional flash plating section are provided.
  • the heating section uses gaseous fuels such as natural gas, liquefied petroleum gas or coal gas
  • the injection radiant tube preheating section uses the radiant tube heating section or/and the radiant tube soaking section to recycle the combustion exhaust gas in the furnace for heat exchange and heating
  • the nitrogen and hydrogen protective gas is then sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange
  • the rapid cooling section includes high hydrogen cooling or/and gas mist cooling or/and water quenching cooling section.
  • the production line uses a jet radiant tube preheating section and simultaneously uses high hydrogen cooling or mist cooling or/and water quenching cooling to rapidly cool the strip, and then sequentially performs reheating, galvanizing or over-aging treatment.
  • the furnace nose section and the moving channel section are arranged in parallel.
  • the strip steel passes backward from the furnace nose section to produce hot-dip pure zinc or alloyed hot-dip galvanizing products.
  • the strip steel passes from the moving channel section through the production of cold rolling, annealing, pickling or Flash plated products.
  • a pickling section and a flash plating section are arranged after the final water-cooling section.
  • the strip steel can choose to pass through the pickling section to produce cold-rolled pickled products, or it can bypass the pickling section to produce cold-rolled annealed products.
  • the strip steel can also be produced after pickling. You can choose to enter the flash plating section to produce flash plating products such as flash nickel plating or flash zinc plating.
  • the production line has more than three optional process paths, which can produce five different types of high-strength steel including cold rolling annealing, pickling, flash plating, hot-dip pure zinc and alloyed hot-dip galvanizing.
  • an optional tensioning and straightening station and/or a surface post-treatment station such as passivation or fingerprint resistance are provided between the flattening station and the exit looper station, so that the strip can be tensioned and straightened and/or surface post-processed. deal with.
  • the muffle furnace section equipment is equipped with sealing devices at the front and rear, and the muffle furnace section equipment is also equipped with an atmosphere adjustment device, in which the hydrogen content, oxygen content and dew point can be individually adjusted and controlled.
  • a balanced insulation section is arranged between the reheating section and the furnace nose section, and the strip steel is subjected to insulation treatment before hot-dip galvanizing.
  • a movable post-plating quick cooling section is also arranged between the air knife section and the post-plating cooling section.
  • the movable post-plating quick cooling section is arranged in parallel with the alloying heating section to achieve hot-dip pure zinc high-strength steel products after plating strips.
  • Rapid cooling; preferably, a mobile post-plating rapid cooling section is set within 10 meters above the air knife section.
  • a secondary reheating section equipment is arranged after the balanced heat preservation section to reheat the balanced heat preservation strip steel twice, and then perform hot-dip galvanizing or over-aging treatment.
  • a pickling section is arranged between the high hydrogen cooling or mist cooling or/and water quenching cooling section and the reheating section.
  • the pickling section includes a pickling unit, a hot water brushing unit, a hot water rinsing unit, and a hot air drying unit.
  • the dry unit realizes pickling of the strip surface and can be used to remove the oxide layer on the surface of the strip after gas mist cooling or/and water quenching cooling.
  • hot-dip pure zinc or alloyed hot-dip galvanizing products it can also improve the special properties of high-strength strip steel. It is the plateability of ultra-high strength strip steel.
  • a flash iron or flash nickel plating section is arranged after the pickling section and before the reheating section, and then reheated, which can further improve the plateability of the ultra-high strength strip.
  • the movable post-plating quick cooling section uses movable jet quick cooling equipment or movable mist cooling equipment.
  • the flexible cold-rolled strip post-processing line of the present invention which is suitable for producing a variety of high-strength steels, can produce ultra-high-strength cold-rolled continuous annealing, pickling, flash plating, hot-dip pure zinc (GI) and alloyed hot-dip galvanizing (GA).
  • this production line can achieve the following purposes: 1) Make full use of the waste heat of the direct-fired furnace exhaust gas to quickly preheat the strip temperature to at least 350°C; 2) Avoid long-term direct contact of the direct-fired combustion exhaust gas in the preheating furnace Strip steel, thereby avoiding the formation of an excessively thick oxide layer on the surface of the strip; 3) Rapid and efficient preheating and direct fire heating can be used to quickly heat the strip temperature to above 750°C, and subsequent use of transverse magnetic induction heating and jet radiation combined heating can Quickly and uniformly heat the strip to above 850°C to achieve rapid, efficient and uniform heating; 4) Thanks to the significant reduction of the heating furnace, the reduced thermal inertia of the furnace and the fast response speed of transverse magnetic induction heating, the strip annealing temperature can be quickly adjusted ; 5) The entire rapid heat treatment furnace can be significantly simplified, miniaturized, and efficient, so it can save energy, reduce emissions, and reduce floor space; 6) The flexible high-strength steel special production line can be
  • a flexible cold-rolled strip post-processing line suitable for producing a variety of high-strength steels which includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - intermediate looper - smoothing - outlet looper - Finishing-coiling; wherein, the central continuous post-processing station includes a jet direct-fire preheating section, a direct-fire heating section, a transverse magnetic induction heating section or a jet radiation composite heating section, a jet radiation composite soaking section, a slow Cold section, rapid cooling section, reheating section; two production lines are arranged in parallel after the reheating section, and one line is equipped with furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, and post-plating The cooling section is then connected to the final water-cooling section; the other section is provided with a moving channel section, an over-aging section, and a final jet cooling section, and is then connected to the final water-cooling
  • the rapid cooling section includes high hydrogen cooling or mist cooling or/and water quenching cooling section;
  • the direct fire heating section burns gaseous fuels such as natural gas or liquefied petroleum gas;
  • the injection direct fire preheating section utilizes direct fire heating
  • the combustion exhaust gas in the section heats the recycled nitrogen and hydrogen protective gas by heat exchange in the furnace, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • the transverse magnetic induction heating section or the jet radiation composite heating section is connected in parallel Or arranged in series; an optional tensioning and straightening station and/or a surface post-treatment station such as passivation or fingerprint resistance is set between the flattening station and the outlet looper station;
  • the jet radiation composite soaking section adopts forced A rapid heat soaking method that combines convection and radiation; so far, the production line has more than three optional process paths, which can realize five different varieties of cold rolling annealing, pickling, flash plating, hot-dip pure zinc
  • a radiant tube heating section is provided between the jet radiation composite heating section and the jet radiation composite soaking section.
  • a balanced insulation section is arranged between the reheating section and the furnace nose section.
  • a secondary reheating section is arranged after the equalization heat preservation section, and the secondary reheating section connects the moving channel section and the furnace nose section.
  • a movable post-plating quick cooling section is set between the air knife section and the post-plating cooling section.
  • the movable post-plating quick cooling section is arranged in parallel with the alloying heating equipment; preferably, it is set within 10 meters above the air knife section. Move the post-plating rapid cooling section.
  • a pickling section is provided between the rapid cooling section and the reheating section, and the pickling section includes a pickling unit, a hot water brushing unit, a hot water rinsing unit, and a hot air drying unit.
  • a flash iron or flash nickel plating section is provided after the pickling section and before the reheating section, and then the reheating section is connected.
  • the flexible production line of the present invention for producing various high-strength/ultra-high-strength steels can achieve the following purposes: 1) Fully utilize the waste heat of direct-fired combustion exhaust gas to quickly preheat the strip temperature to at least 350°C; 2) Avoid direct-fire combustion exhaust gas waste heat. Fire burning exhaust gas in The preheating furnace is in direct contact with the strip steel for a long time, thereby avoiding the formation of an excessively thick oxide layer on the surface of the strip steel; 3) Rapid and efficient preheating and direct fire heating can be used to quickly heat the strip steel temperature to above 750°C, which can be used horizontally in conjunction with subsequent use.
  • Magnetic induction heating and jet radiation combined heating can quickly and evenly heat the strip steel to above 850°C, achieving rapid, efficient and uniform heating; 4) Thanks to the significant reduction of the heating furnace, the reduction of the thermal inertia of the furnace and the fast response speed of transverse magnetic induction heating, it can Achieve rapid adjustment of strip annealing temperature; 5) The entire rapid heat treatment furnace can be significantly simplified, miniaturized, and efficient, so it can save energy, reduce emissions, and reduce floor space; 6) The flexible high-strength steel production line can flexibly produce various A variety of flash plating products such as cold-rolled annealing, hot-dip pure zinc (GI), alloyed hot-dip galvanizing (GA), cold-rolled surface flash nickel plating or flash zinc plating, so this flexible production line can better meet market needs; 7) The plateability of ultra-high-strength steel products can be greatly improved, so the surface quality of ultra-high-strength hot-dip products can also be significantly improved; 8) The application of rapid heating, rapid
  • a flexible production line for producing a variety of high-strength/ultra-high-strength steels which includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - intermediate looper - smoothing - outlet looper - finishing -Reeling; where,
  • the central continuous post-processing station includes a spray direct fire preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section, a reheating section and two parallel processing lines, a final water cooling section and Optional pickling section and flash plating section;
  • One of the processing lines includes the furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, and post-plating cooling section;
  • the other processing line includes a moving channel section, an overaging section, and a final jet cooling section;
  • the heating section adopts a direct fire heating section, a transverse magnetic induction heating section and/or a jet radiation composite heating section;
  • the transverse magnetic induction heating section and the jet radiation composite heating section are arranged in parallel or in series;
  • the rapid cooling section includes high hydrogen cooling or mist cooling or/and water quenching cooling
  • An optional tensioning and straightening station and/or a surface post-treatment station such as passivation or fingerprint resistance are also arranged between the flattening station and the exit looper station.
  • the optional pickling section includes a pickling unit, a hot water brushing unit, a hot water rinsing unit, and a hot air drying unit to realize pickling of the strip surface and can be used for aerosol cooling or/and water quenching cooling.
  • the removal of the oxide layer on the surface of the strip steel can also be used to improve the coating bonding strength of subsequent flash plating.
  • radiant tube heating equipment is installed between the jet radiation composite heating section and the radiant tube soaking section. After the strip is heated by transverse magnetic induction heating or jet radiation composite heating, it can also be heated by the radiant tube, and then the radiant tube is heated. Of course, with After the steel jet radiation composite heating, the radiant tube can also be directly heated.
  • a balanced insulation section is set up between the reheating section and the furnace nose section, and the strip steel is thermally insulated before hot-dip galvanizing.
  • a movable post-plating quick cooling section equipment is installed between the air knife section and the post-plating cooling section.
  • the movable post-plating quick cooling section is in contact with the alloy.
  • the heating sections are arranged in parallel to achieve rapid cooling of the post-plated strip of hot-dip pure zinc high-strength steel products; preferably, a mobile post-plating rapid cooling section equipment is set up within 10 meters above the air knife section.
  • the moving post-plating quick cooling section adopts a moving jet quick cooling section or/and a moving aerosol quick cooling section; when a moving jet quick cooling section and a moving aerosol quick cooling section are set up at the same time, the two process sections are connected in parallel. Arrangement, choose one during production to achieve rapid cooling of the plated strip.
  • a secondary reheating section is set up after the balanced heat preservation section, and the strip steel with balanced heat preservation is reheated twice, and then hot-dip galvanized or over-aged.
  • a pickling section is provided between the rapid cooling section and the reheating section.
  • the pickling section includes a pickling unit, a hot water brushing unit, a hot water rinsing unit, and a hot air drying unit to realize pickling of the strip surface. It can be used In addition to removing the oxide layer on the surface of the strip after gas mist cooling or/and water quenching, it can also improve the plating properties of high-strength strips, especially ultra-high-strength strips, for hot-dip pure zinc or alloyed hot-dip galvanizing products.
  • a direct fire heating section a radiant tube heating section, a transverse magnetic induction heating section or a jet radiation composite heating section are arranged in sequence.
  • An optional tension-leveling station and/or equipment for surface post-treatment stations such as passivation or fingerprint resistance are also arranged between the flattening station and the exit looper station, which can perform tension-leveling and/or surface post-processing on the strip. deal with.
  • the heating section burns gaseous fuels such as natural gas, liquefied petroleum gas, or coal gas, and produces high-temperature waste gas during the combustion process.
  • the injection direct-fire preheating section uses the heating section combustion waste gas to exchange heat in the furnace to heat the recycled nitrogen and hydrogen protective gas.
  • the nitrogen and hydrogen protective gas is then sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • the transverse magnetic induction heating section or the jet radiation composite heating section is used for rapid heating of strip steel. It can be arranged in parallel or in series.
  • the transverse magnetic induction heating can be selected according to the peak and valley electricity prices to reduce production costs.
  • the furnace nose section and the moving channel section are arranged in parallel, the strip steel passes backward from the furnace nose section to produce hot-dip pure zinc or alloyed hot-dip galvanizing products, and the strip steel passes from the moving channel section to produce cold-rolled or flash-plated products;
  • the production line uses a spray direct fire preheating section and simultaneously uses high hydrogen cooling or mist cooling or/and water quenching cooling for rapid cooling, then reheating, and then galvanizing or over-aging treatment.
  • the production line has at least three or more optional process paths, which can produce five different types of high-strength steel including cold rolling annealing, pickling, flash plating, hot-dip pure zinc and alloyed hot-dip galvanizing.
  • the present invention originally adopts the injection direct-fire preheating section to preheat the strip of steel, or more precisely, the high-temperature nitrogen and hydrogen protective gas injection direct-fire preheating section. This is a concentrated expression of the novelty, creativity and practicability of the present invention. Its significant features that are different from ordinary preheating sections are: 1 Using a heat exchanger in the furnace (the heat exchanger is not arranged outside the furnace) for heating and recycling nitrogen and hydrogen protection Gas, heated nitrogen and hydrogen protective gas is sprayed into the upper and lower surfaces of the strip at high speed to force convection heat exchange to achieve rapid and efficient preheating.
  • this method significantly reduces the heat loss of the furnace shell and protective gas channel, makes full use of the waste heat of the combustion exhaust gas, has higher heating efficiency and faster heating rate; 2
  • injection direct fire preheating In the section, the combustion exhaust gas from the heating section passes through the heat exchanger chamber of the preheating section. During the passing process, the combustion exhaust gas from the heating section fully exchanges heat with the heat exchanger in the heat exchanger chamber to heat the nitrogen and hydrogen protective gas.
  • the combustion exhaust gas of the heating section in the direct-fire preheating section is not always in direct contact with the strip (when the heating section is heated by direct fire, the injection direct-fired preheating section is only in direct contact with the high-temperature section for a short time and the exhaust gas at this time belongs to a reducing atmosphere or Micro-oxidizing atmosphere), thereby avoiding overoxidation of the strip surface; 3
  • the heating section is heated by direct fire, the incompletely burned gas in the direct-fire combustion exhaust gas is enriched with oxygen in the semi-sealed unit at the top of the jet preheating section. Secondary combustion, but the burning flame does not contact the strip steel, thus effectively avoiding overoxidation of the strip steel surface;
  • the strip steel preheating temperature is higher.
  • the heating section uses direct fire heating, due to the high-temperature nitrogen and hydrogen protective gas injection direct fire preheating
  • the heat transfer coefficient is high, and the preheated strip temperature can reach at least 350°C and above, which is at least 100°C higher than the strip temperature in the ordinary preheating section; 5
  • the injection method of the present invention The temperature of the direct-fired combustion exhaust gas coming out of the direct-fired preheating section is usually much lower than 750°C (if a sufficient number of high-speed injection preheating units are arranged, it can even be directly discharged below 200°C). There is no need to mix cold air for secondary use outside the furnace. Or no need for secondary use at all.
  • the present invention has at least three or more optional process paths
  • the present invention can realize the production of five different types of high-strength steel, especially ultra-high-strength steel, including cold rolling annealing, pickling, flash plating, hot-dip pure zinc and alloyed hot-dip galvanizing;
  • the present invention can perform surface post-treatment such as tension straightening or/and passivation or fingerprint resistance on five different varieties of ultra-high-strength steel;
  • the present invention is equipped with secondary reheating section equipment, which realizes two rises in strip temperature before hot-dip galvanizing or over-aging treatment, and can quickly cool the third-generation high-strength steel (QP steel) products to a lower temperature. , and then immediately heated to a higher temperature for a long time carbon redistribution treatment, and after the treatment is completed, it is quickly reheated to the temperature of the hot-dip galvanizing pot for galvanizing;
  • QP steel third-generation high-strength steel
  • the heating section of the present invention preferably uses a direct-fire heating section, and a rapid heating equipment is provided after the direct-fire heating section.
  • the rapid heating equipment can either use transverse magnetic induction heating section equipment or a jet radiation composite heating device. Of course, it can also be used.
  • the transverse magnetic induction heating section equipment and the jet radiation composite heating device can be selected at the same time. However, when the transverse magnetic induction heating section equipment and the jet radiation composite heating device are selected at the same time, the jet radiation composite heating device should be arranged after the transverse magnetic induction heating section equipment.
  • the simultaneous use of the jet direct fire preheating section and the subsequent rapid heating equipment is another embodiment of the novelty, creativity and practicability of the present invention.
  • the subsequent section select the radiation heating device first, and then the soaking section equipment; however, when the jet radiation composite heating section equipment is selected, it is recommended that the radiation heating section equipment is no longer selected.
  • the beneficial effects of using rapid heating equipment in the present invention are mainly reflected in: 1 It can realize rapid adjustment of the soaking temperature of strip steel, which is very critical for the production of high-strength steel, especially ultra-high-strength steel, and can reduce the risk of strip steel caused by excessive soaking temperature. The performance does not match the quality loss; 2 Transverse magnetic induction heating can heat strip steel to a higher temperature more economically and conveniently.
  • Transverse magnetic induction heating has achieved rapid heating of strip steel to 930°C, achieving ultra-high temperatures that cannot be achieved with traditional radiant tube heating. Annealing; 3 Heating The temperature uniformity of the final strip is good, and the temperature uniformity along the width direction of the strip can be controlled within ⁇ 5°C; 4 Since the significant increase in heating rate can refine the grain structure and improve the strong plasticity of the material, it is suitable for high-strength steel and ultra-high-strength steel. Performance improvements and cost reductions in steel products are particularly beneficial.
  • the present invention arranges flash plating section equipment in front of the leveling station after the final water cooling section.
  • the strip steel can choose to pass through the flash plating section or bypass the flash plating section, thereby realizing the processing of cold-rolled high-strength steel, especially cold-rolled steel. Surface modification of ultra-high strength steel.
  • the present invention also arranges optional pickling section equipment before the flash plating section after the final water cooling section, which can be used to remove the oxide layer on the surface of the strip after gas mist cooling or/and water quenching cooling, and can also be used to improve subsequent flash plating. Coating bonding strength of plating.
  • the present invention also arranges a pickling section or/and flash iron plating or flash nickel plating section equipment after the strip is quickly cooled to realize pickling of the strip surface, which can be used for gas mist cooling or/and water quenching to cool the strip.
  • the removal of the surface oxide layer can also improve the platingability of high-strength strip steel, especially ultra-high-strength strip steel, for hot-dip pure zinc or alloyed hot-dip galvanized products.
  • Direct-fire heating has a high primary utilization rate of waste heat of combustion exhaust gas, and can preheat the strip temperature to at least 350°C;
  • the strip steel can be quickly and economically heated to above 850°C or even above 900°C, and ultra-high temperature annealing can be achieved, thereby producing various new ultra-high-strength steel products;
  • the temperature uniformity of the strip after rapid heating is good, and the temperature uniformity along the width of the strip can be controlled within ⁇ 5°C;
  • the same production line can produce continuous cold-rolled DP steel, MS steel, TRIP steel, QP steel and hot-dip galvanized DP steel, MS steel, TRIP steel, QP steel and other ultra-high-strength steel products, and adopts rapid heat treatment technology
  • the various high-strength steel products produced have better performance and lower cost
  • martensitic ultra-high-strength steel with a strength of up to 1500MPa can be produced, with high surface quality and plate shape quality.
  • the strip can be plated during hot-dip galvanizing It has good corrosion resistance, excellent coating quality, and can produce new hot-dip galvanized tempered martensitic steel products with excellent overall performance;
  • the present invention can realize the pre-oxidation and reduction process by adjusting the air-fuel ratio of the direct-fired burner in the direct-fired section, and the plateability of ultra-high-strength steel is better.
  • the continuous retreat or hot-dip galvanizing dual-purpose ultra-high-strength strip steel production line of the present invention can achieve the following purposes: 1) It can be used according to market demand.
  • the production of continuous withdrawal products or hot-dip galvanized products can be flexibly selected according to the quantity; 2)
  • the preheating temperature of the strip can be increased to about 350°C to transfer the combustion heat to the strip as much as possible; 3)
  • Through the use of rapid heating technology it can During the heating process of high-strength steel, fine-grained austenite is generated, which can further improve the strength of high-strength steel; 7) Realize rapid heating and rapid cooling of high-strength steel, shortening the heat treatment cycle time of strip steel;
  • Processing performance (such as welding performance, coating performance); 9) Improve soaking and achieve rapid adjustment of strip soaking temperature.
  • a continuous unwinding or hot-dip galvanizing dual-purpose ultra-high-strength strip production line which includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein,
  • the central continuous post-processing station includes a jet direct-fire preheating section, a direct-fire heating section, a transverse magnetic induction heating section, a radiant tube soaking section or a jet radiation composite soaking section, a slow cooling section, a rapid cooling section, and a reheating section.
  • the reheating section is equipped with two processing lines arranged in parallel.
  • One line is equipped with a furnace nose section, a zinc pot section, an air knife section, a post-plating cooling section, and is connected to the final water cooling section; the other line is equipped with a moving channel section and an over-aging section.
  • the final jet cooling section connected to the final water cooling section;
  • the production line uses jet direct fire preheating to preheat the strip, and sets up transverse magnetic induction heating equipment after the direct fire heating section to quickly increase the heating temperature, and selects high Hydrogen cooling performs rapid cooling;
  • the injection direct-fire preheating section uses the direct-fire heating section to burn the exhaust gas to heat the recycled nitrogen and hydrogen protective gas in the furnace, and then sprays the nitrogen and hydrogen protective gas to the upper and lower surfaces of the strip to achieve forced convection.
  • the rapid cooling section adopts a high hydrogen cooling section, aerosol cooling section or water quenching cooling section.
  • a balanced heat preservation section and a secondary reheating section are arranged in sequence after the reheating section, and then connected to the two processing lines arranged in parallel.
  • the hot-dip galvanizing is alloyed hot-dip galvanizing, and an alloying heating section and an alloying soaking section are provided between the air knife section and the post-plating cooling section.
  • the continuous unwinding or hot-dip galvanizing dual-purpose ultra-high-strength steel strip production line of the present invention includes the following stations in order: uncoiling-welding-entry looper-cleaning-central continuous post-processing-flattening-exit looper-coil
  • the central continuous post-processing station sequentially includes a jet direct-fire preheating section, a direct-fire heating section, a transverse magnetic induction heating section, a radiant tube soaking section or a jet radiation composite soaking section, a slow cooling section, and a rapid cooling section. section, pickling section, and reheating section; the self-reheating section is equipped with two processing lines arranged in parallel.
  • One line is equipped with a furnace nose section, a zinc pot section, an air knife section, a post-plating cooling section, and is connected to the final water cooling section; the other line There is a moving channel section, an over-aging section, and a final air jet cooling section connected to the final water cooling section; the rapid cooling section adopts an air mist cooling section or/and a water quenching cooling section.
  • the strip steel is preheated using a spray direct-fire preheating section, and a transverse magnetic induction heating section is installed after the direct-fire heating section.
  • the hot section can quickly increase the heating temperature, and set up aerosol cooling or/and water quenching cooling for rapid cooling;
  • the described injection direct fire preheating section uses the direct fire heating section combustion exhaust gas to heat the recycled nitrogen and hydrogen protective gas in the furnace, and then injects the nitrogen and hydrogen protective gas to the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • a balanced heat preservation section and a secondary reheating section are arranged in sequence after the reheating section, and the secondary reheating section is connected to the two parallel processing lines.
  • hot-dip galvanizing is alloyed hot-dip galvanizing, and an alloying heating section and an alloying soaking section are provided between the air knife section and the post-plating cooling section.
  • the continuous unwinding or hot-dip galvanizing dual-purpose ultra-high-strength strip production line includes the following stations in sequence: uncoiling-welding-entry looper-cleaning-central continuous post-processing-flattening-outlet looper- Coiling; wherein, the central continuous post-processing station sequentially includes a jet direct-fire preheating section, a direct-fire heating section, a transverse magnetic induction heating section, a radiant tube soaking section or a jet radiation composite soaking section, a slow cooling section, a rapid The cooling section, pickling section, and reheating section; the self-reheating section is equipped with two parallel processing lines, one of which is equipped with a furnace nose section, a zinc pot section, an air knife section, a post-plating cooling section, and is connected to the final water-cooling section; There is a moving channel section, an over-aging section and a final jet cooling section along the way, connected to the final water cooling section; the rapid cooling section adopt
  • a balanced heat preservation section and a secondary reheating section are arranged in sequence after the reheating section, and the secondary reheating section is connected to the two parallel processing lines.
  • hot-dip galvanizing is alloyed hot-dip galvanizing, and an alloying heating section and an alloying soaking section are provided between the air knife section and the post-plating cooling section.
  • a movable post-plating quick cooling section is arranged after the air knife section.
  • the movable post-plating quick cooling section can move online or offline and is arranged in parallel with the alloying heating section.
  • a radiant tube heating section is added between the direct fire heating section and the transverse magnetic induction heating section.
  • cleaning stations are provided before and after the entrance looper station.
  • a finishing station is provided before the coiling station.
  • an intermediate looper station is also provided before the leveling station.
  • an optional tensioning and straightening station is provided between the leveling station and the outlet looper station, and the strip can be tensioned and straightened before entering the outlet looper.
  • an optional surface post-treatment station such as passivation or fingerprint resistance is provided between the flattening station and the outlet looper station.
  • an optional tensioning and straightening station and an optional surface post-treatment station such as passivation or fingerprint resistance are simultaneously provided between the flattening station and the exit looper station.
  • the present invention uses injection direct-fire preheating section equipment to preheat the strip.
  • the injection direct-fire preheating section equipment uses the direct-fire heating section combustion exhaust gas to heat the recycled nitrogen and hydrogen protective gas in the furnace, and then uses the nitrogen and hydrogen to The protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange, which can fully utilize the waste heat of radiant tube combustion online and preheat the strip temperature to at least 350°C.
  • the preheating device adds a heat exchange and jet air box unit in the preheating furnace, and uses heated nitrogen and hydrogen protective gas to be sprayed onto the upper and lower surfaces of the strip at high speed to force convection heat exchange to achieve rapid and efficient preheating of the strip.
  • This method is different from the traditional method. Compared with the preheating method, the heat loss of the furnace shell and protective gas channel is significantly reduced, the waste heat of direct combustion exhaust gas is more fully utilized, the heating efficiency is higher, and the heating rate is faster.
  • the direct-fired exhaust gas is used to heat the gas in the jet air box and the steel strip is preheated by the jet through the nozzle. Compared with the existing technology, the preheating efficiency is further improved, and the heat of the direct-fired exhaust gas is more fully utilized.
  • the preheating device is designed with heat exchange into the preheating furnace.
  • the direct-fired combustion exhaust gas mainly passes through the preheating furnace heat exchange and jet wind box unit. During the passing process, the direct-fired combustion exhaust gas fully exchanges with the heat exchange pipes in the windbox. Heat exchange, heating nitrogen and hydrogen protective gas in the wind box, so the direct fire combustion exhaust gas in the preheating furnace is not always in direct contact with the strip (only in the high temperature section for a short period of time and the exhaust gas is a reducing atmosphere or a slightly oxidizing atmosphere. ), thereby avoiding overoxidation of the strip surface.
  • the preheating device is designed with a direct-fire combustion exhaust gas secondary combustion chamber and an open flame burner in the preheating furnace.
  • the incompletely burned gas in the direct-fire combustion exhaust gas is recharged in the semi-sealed direct-fire combustion exhaust gas on the top of the preheating furnace.
  • Oxygen-rich secondary combustion is carried out in the combustion chamber, but the combustion flame does not contact the strip steel, thus effectively avoiding overoxidation of the strip steel surface.
  • the preheating temperature of the strip is higher. Due to the high heat transfer coefficient of high-temperature nitrogen and hydrogen protective gas injection and direct fire injection preheating, the temperature of the strip after preheating can reach more than 350°C, which is higher than that of ordinary preheating.
  • the temperature of the hot furnace strip is at least 100°C higher;
  • the temperature of the direct-fired combustion exhaust gas coming out of the preheating furnace is usually much lower than 750°C (if a sufficient number of high-speed injection preheating units are arranged, it can even be directly discharged below 200°C), and there is no need to mix cold air for secondary use outside the furnace. Or no need for secondary use at all. It can be seen that the preheating device not only realizes full utilization of the waste heat of the direct-fired furnace exhaust gas, but also avoids excessive oxidation of the strip surface caused by the direct-fired furnace exhaust gas contacting the strip for a long time.
  • a transverse magnetic induction heating section is set after the direct fire heating section.
  • the transverse magnetic induction heating is used for further rapid lifting of high-temperature strip steel and can achieve ultra-high temperature annealing of high-strength steel.
  • the present invention sets up a secondary reheating section to achieve two rises in strip temperature before hot-dip galvanizing, allowing third-generation high-strength steel (QP steel) products to be quickly cooled to a lower temperature and then quickly heated immediately.
  • QP steel third-generation high-strength steel
  • the carbon is redistributed to a higher temperature for a long time, and after the treatment is completed, it is quickly reheated to the temperature of the hot-dip galvanizing pot for galvanizing.
  • This invention can flexibly select four different cooling paths to produce continuous withdrawal products or hot-dip galvanized products
  • the present invention uses jet radiation composite soaking instead of radiant tube soaking, which can realize rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change;
  • the present invention can realize the continuous production of strip steel products with three different surface states: cold-rolled annealing, hot-dip pure zinc and alloyed hot-dip galvanizing.
  • This invention can flexibly choose the production of continuous withdrawal products or the production of hot-dip galvanized products;
  • This invention avoids the direct fire combustion exhaust gas from contacting the strip for a long time, and the strip has good surface quality and plateability;
  • the strip temperature is high after preheating, and the primary utilization rate of heat energy is high;
  • the present invention uses transverse magnetic induction heating for further rapid improvement of high-temperature strip steel, and can realize ultra-high temperature annealing of high-strength steel;
  • the present invention uses secondary reheating equipment to achieve two rises in strip temperature before hot-dip galvanizing, allowing third-generation high-strength steel (QP steel) products to be quickly cooled to a lower temperature and then quickly heated immediately. Carry out long-term carbon redistribution treatment to a higher temperature, and after the treatment is completed, it is quickly reheated to the temperature of the hot-dip galvanizing pot to perform galvanizing treatment;
  • QP steel third-generation high-strength steel
  • the application of the rapid heating, rapid cooling and rapid heat treatment process technology of the present invention can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products; 780MPa
  • the composition of grade products can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving high-strength steel Product market competitiveness;
  • the present invention realizes rapid heating and rapid cooling of ultra-high-strength steel and shortens the heat treatment cycle time of strip steel;
  • the present invention uses jet radiation composite soaking instead of radiant tube soaking, which can realize rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • the continuous withdrawal or hot-dip galvanizing dual-purpose high-strength strip production line of the present invention can achieve the following purposes: 1) The production of continuous withdrawal products or the production of hot-dip galvanized products can be flexibly selected according to market demand; 2) The preheating temperature of the strip can be adjusted Raise it to about 250°C to transfer the combustion heat to the strip as much as possible; 3) The temperature of the exhaust gas after preheating is low, the exhaust gas temperature can be reduced to below 200°C, and it can be directly discharged without secondary use outside the furnace.
  • a continuous unwinding or hot-dip galvanizing dual-purpose high-strength strip production line which includes the following stations in sequence: uncoiling-welding-entry looper-cleaning-central continuous post-processing-flattening-exit looper-coiling; wherein, the The central continuous post-processing station includes a jet radiant tube preheating section, a radiant tube heating section, a transverse magnetic induction heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, and a parallel arrangement (furnace nose section + zinc Pot section + air knife section + post-plating cooling section) and (moving channel section + over-aging section + final jet cooling section), and final water cooling section; the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section ;
  • the rapid cooling section includes a high hydrogen cooling section or/aerosol cooling section or/water quenching cooling section.
  • a balanced heat preservation section and a secondary reheating section are provided after the reheating section, and the secondary reheating section is connected to the parallel-arranged (furnace nose section + zinc pot section + air knife section + post-plating cooling section) and (Moving channel section + over-aging section + final jet cooling section).
  • hot-dip galvanizing is alloyed hot-dip galvanizing, and an alloying heating section and an alloying soaking section are provided between the air knife section and the post-plating cooling section.
  • the continuous unwinding or hot-dip galvanizing dual-purpose high-strength strip production line of the present invention includes the following stations in order: uncoiling-welding-entry looper-cleaning-central continuous post-processing-levelling-exit looper-coiling ;
  • the central continuous post-processing station includes a spray radiant tube preheating section, a radiant tube heating section, a transverse magnetic induction heating section, a soaking section, a slow cooling section, a rapid cooling section, a pickling section, and a reheating section.
  • the (furnace nose section + zinc pot section + air knife section + post-plating cooling section) and (moving channel section + over-aging section + final jet cooling section) and final water cooling section are arranged in parallel; the soaking section uses radiant tubes for equalization.
  • the strip can choose aerosol cooling or water quenching cooling, or you can choose aerosol cooling first and then water quenching cooling.
  • a balanced heat preservation section and a secondary reheating section are provided after the reheating section, and the secondary reheating section is connected to the parallel-arranged (furnace nose section + zinc pot section + air knife section + post-plating cooling section) and (Moving channel section + over-aging section + final jet cooling section).
  • hot-dip galvanizing is alloyed hot-dip galvanizing, and an alloying heating section and an alloying soaking section are provided between the air knife section and the post-plating cooling section.
  • the continuous unwinding or hot-dip galvanizing dual-purpose high-strength strip production line of the present invention includes the following stations in sequence: uncoiling-welding-entry looper-cleaning-central continuous post-processing-flattening-exit looper-coil Take; wherein, the central continuous post-processing station includes a spray radiant tube preheating section, a radiant tube heating section, a transverse magnetic induction heating section, a soaking section, and a slow down section.
  • Cold section, rapid cooling section, pickling section, reheating section, parallel arrangement (furnace nose section + zinc pot section + air knife section + alloying heating section + alloying soaking section + post-plating cooling section) and (moving Channel section + over-aging section + final jet cooling section), final water cooling section;
  • the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section;
  • the rapid cooling section adopts a high hydrogen cooling section, aerosol cooling section or/and water quenching cooling section, and the high hydrogen cooling section is arranged in parallel with the gas mist cooling section or/and the water quenching cooling section, and the high hydrogen cooling section is connected to the reheating section.
  • a balanced heat preservation section and a secondary reheating section are provided after the reheating section, and the secondary reheating section is connected to the parallel-arranged (furnace nose section + zinc pot section + air knife section + post-plating cooling section) and (Moving channel section + over-aging section + final jet cooling section).
  • hot-dip galvanizing is alloyed hot-dip galvanizing, and an alloying heating section and an alloying soaking section are provided between the air knife section and the post-plating cooling section.
  • a movable post-plating quick cooling section is arranged after the air knife section, and is arranged in parallel with the alloying heating section, so that the post-plating quick cooling section forms an online and offline switching design.
  • the movable post-plating quick cooling section is online to quickly cool the plated strip.
  • the alloying heating section is offline; when producing alloyed hot-dip galvanized products, the movable post-plating quick cooling section is offline. At this time, the alloying heating section is online and the strip steel is alloyed and heated.
  • the radiant tube soaking section is replaced with a jet radiation composite soaking section to achieve rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • a flash nickel or flash iron section is provided before the reheating section to improve the corrosion resistance or plateability of the strip.
  • cleaning stations are set up before and after the entrance looper station to perform secondary cleaning of the strip to further improve the surface quality of the strip.
  • a finishing station is set up before the coiling station to finish the strip before coiling it.
  • an intermediate looper station is set up before the smoothing station so that the smoothing machine can replace the work rolls online without losing the strip quality.
  • an optional tensioning and straightening station is provided between the leveling station and the outlet looper station, and the strip can be tensioned and straightened before entering the outlet looper.
  • an optional surface post-processing station such as passivation or fingerprint resistance is provided between the flattening station and the exit looper station.
  • the strip steel can be subjected to surface post-processing such as passivation or fingerprint resistance before entering the outlet loop. set.
  • an optional tensioning and straightening station equipment and an optional passivation or fingerprint-resistant surface post-treatment station are simultaneously provided between the flattening station and the exit looper station.
  • the strip steel can be passivated or fingerprint-resistant. Wait for surface post-processing before entering the outlet looper.
  • the present invention uses a jet radiant tube preheating section equipment to preheat the strip.
  • the jet radiant tube preheating section equipment uses the combustion exhaust gas of the radiant tube heating section to heat the recycled nitrogen and hydrogen protective gas in the furnace, and then uses the nitrogen Hydrogen protective gas is injected into The upper and lower surfaces of the strip realize forced convection heat exchange, which can fully utilize the waste heat of the radiant tube combustion online and preheat the strip temperature to at least 250°C.
  • the injection radiant tube injection preheating section is one of the core technologies of the present invention. .
  • the transverse magnetic induction heating section equipment is installed after the radiant tube heating section of the present invention. This transverse magnetic induction heating is used to further rapidly improve high-temperature strip steel and can realize ultra-high temperature annealing of high-strength steel;
  • This invention can flexibly select four different cooling paths to produce continuous withdrawal products or hot-dip galvanized products
  • the present invention realizes rapid heating, rapid cooling and annealing through the use of transverse magnetic induction heating equipment and a variety of rapid cooling equipment, and can continuously produce rapid heat treatment high-strength strip steel;
  • the present invention uses jet radiation composite soaking instead of radiant tube soaking, which can realize rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • the present invention can realize the continuous production of strip steel products with three different surface states: cold rolling annealing, hot-dip pure zinc and alloyed hot-dip galvanizing.
  • the present invention's technical solution of setting up secondary reheating section equipment realizes two rises in strip temperature before hot-dip galvanizing, and can realize rapid cooling of third-generation high-strength steel (QP steel) products to a lower temperature. Then it is quickly heated to a higher temperature for a long time carbon redistribution treatment. After the treatment is completed, it is quickly reheated to the hot-dip galvanizing pot temperature for a second time to perform galvanizing treatment.
  • QP steel third-generation high-strength steel
  • This invention can flexibly choose the production of continuous withdrawal products or the production of hot-dip galvanized products;
  • the strip temperature is high after preheating, and the primary utilization rate of heat energy is high;
  • the present invention uses transverse magnetic induction heating for further rapid improvement of high-temperature strip steel, and can realize ultra-high temperature annealing of high-strength steel;
  • the present invention uses secondary reheating equipment to achieve two rises in strip temperature before hot-dip galvanizing, allowing third-generation high-strength steel (QP steel) products to be quickly cooled to a lower temperature and then quickly heated immediately. Carry out long-term carbon redistribution treatment to a higher temperature, and after the treatment is completed, it is quickly reheated to the temperature of the hot-dip galvanizing pot to perform galvanizing treatment;
  • QP steel third-generation high-strength steel
  • the application of the rapid heating, rapid cooling and rapid heat treatment process technology of the present invention can use lower alloy components to produce various advanced high-strength steel products with higher strength levels.
  • the composition of 450MPa grade products can reach the strength of 590MPa grade products; 780MPa
  • the composition of grade products can reach the performance of 980MPa grade products, which can not only reduce the production cost of high-strength steel, but also improve the mechanical properties and subsequent processing properties (such as welding performance and coating performance) of various ultra-high-strength steel products, significantly improving high-strength steel Product market competitiveness;
  • the present invention realizes rapid heating and rapid cooling of ultra-high-strength steel and shortens the heat treatment cycle time of strip steel;
  • the present invention uses jet radiation composite soaking instead of radiant tube soaking, which can realize rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • the injection direct fire preheating device used in each production line of the present invention includes: a direct fire furnace and a preheating furnace; wherein,
  • the direct-fired stove includes:
  • the furnace shell has a top roller chamber and a furnace bottom roller chamber respectively at its upper and lower ends; the top roller chamber and the furnace bottom roller chamber are respectively equipped with steering rollers; several direct-fire heating zones are set up along the height direction in the furnace shell.
  • Several direct-fire burners are provided; at least two through holes are provided on the upper side wall of the furnace shell, and they are arranged symmetrically left and right;
  • the preheating furnace includes:
  • the upper side wall of the furnace body is provided with at least two connection holes, which are arranged symmetrically left and right, and are connected to the through holes in the upper part of the furnace shell of the direct furnace through communication pipes;
  • the top of the furnace body is provided with a roller chamber corresponding to the top of the furnace , a furnace throat for strip steel to pass through;
  • the bottom of the furnace body is equipped with a strip steel inlet and a corresponding sealing device and a steering roller;
  • an upper partition with holes is provided in the upper part of the furnace body to form an upper gas collecting chamber for direct-fired exhaust gas;
  • direct-fired A direct-fired combustion exhaust gas secondary combustion chamber is provided below the upper exhaust gas collection chamber, and at least one open flame burner is installed in the direct-fired combustion exhaust gas secondary combustion chamber; preferably, a combustion exhaust gas measuring chamber is also provided in the direct-fired combustion exhaust gas secondary combustion chamber.
  • Thermometer a lower partition with holes is provided in the lower part of the furnace body to form a direct-fire exhaust
  • each heat exchange and jet air box unit is The bellows unit includes,
  • the air box body has a number of heat exchange tubes vertically arranged inside it, and a number of nozzles are arranged on one side of the air box body relative to the belt passage; an exhaust gas secondary mixing chamber connected to the heat exchange tubes is arranged between the upper and lower air box bodies. ;Put nitrogen and hydrogen protective gas into the wind box;
  • Circulation fan the port of its inlet pipe is arranged in the belt passage, and the port of its outlet pipe is located in the wind box;
  • a number of sealing devices for the steel strip to pass through are respectively provided at the upper and lower ports of the belt passing passage and at the belt passing holes of the upper and lower partitions; preferably, the sealing device is a nitrogen sealing structure and adopts nitrogen sealing chamber with a nitrogen injection pipeline.
  • the high-temperature combustion exhaust gas generated by the direct-fire combustion of the direct-fired furnace enters the preheating furnace through the connecting pipe.
  • the preheating furnace is equipped with multiple heat exchange and jet air box units arranged up and down in sequence.
  • the exchange pipe heats the nitrogen-hydrogen mixed gas in the wind box, and sprays high-temperature nitrogen-hydrogen mixed gas to both sides of the strip through high-speed nozzles facing both sides of the strip to rapidly heat it.
  • Strip steel, the sprayed high-temperature nitrogen-hydrogen mixed gas performs heat exchange with the low-temperature strip steel.
  • the mixed gas After the mixed gas reduces the temperature, it is pumped back from the circulating fans arranged near both sides of the strip steel to the heat exchanger in the furnace and its internal tube path.
  • the combustion exhaust gas undergoes heat exchange again to increase the temperature of the nitrogen-hydrogen mixed gas again, and then is sprayed from the inside of the jet air box unit to both sides of the strip, and so on.
  • the preheating is provided with a heat exchange and jet air box unit and a direct-fired combustion exhaust gas secondary combustion chamber.
  • the heat exchange and air-jet airbox unit uses heat exchange pipes (the heat exchanger is not arranged outside the furnace) to convert the direct-fired combustion exhaust gas into a secondary combustion chamber.
  • the combustion exhaust gas re-burned in the secondary combustion chamber heats the nitrogen and hydrogen protective gas recycled in the air box. Under the action of the circulating fan, the heated nitrogen and hydrogen protective gas is sprayed at high speed to the upper and lower surfaces of the strip to force convection heat exchange to achieve rapid and efficient preheating. steel.
  • An open flame burner is also provided in the direct-fired combustion exhaust gas secondary combustion chamber, which is used for the oxygen-rich secondary combustion of the gas that is not fully burned in the direct-fired combustion exhaust gas in the direct-fired combustion exhaust gas secondary combustion chamber, and the burning flame will not contact to strip steel.
  • An exhaust gas secondary mixing chamber connected to the heat exchange tube is provided between the upper and lower air box bodies.
  • the temperature of the exhaust gas is uniformized in the exhaust gas secondary mixing chamber before entering the downward air box body.
  • the sealing device is a nitrogen sealing structure and is provided with a nitrogen sealing chamber.
  • Each nitrogen sealing chamber is equipped with a nitrogen injection pipe port.
  • the heat and jet air box unit has a through-belt channel inside, which can avoid excessive oxidation of the surface of the strip steel by direct fire combustion exhaust gas.
  • a sealing device is provided at the strip entrance of the preheating furnace, and a gas injection port is also provided inside to inject a small amount of sealing nitrogen or air. Its function is to prevent direct fire combustion waste gas from overflowing outside the furnace.
  • the spray radiant tube preheating device used in each production line of the present invention includes:
  • Radiant tube heating furnace has a furnace top roller chamber above the furnace body, and a steering roller is installed in the furnace top roller chamber;
  • a radiant tube exhaust gas collection chamber is connected to the radiant tube heating furnace body through a connecting pipe;
  • Preheating furnace including:
  • the upper side wall of the preheating furnace body is provided with a connecting hole, which is connected to the radiant tube exhaust gas collection chamber through a connecting tube; the top of the preheating furnace body is provided with a corresponding and supplying roller chamber corresponding to the top roller chamber of the radiant tube heating furnace.
  • the furnace throat that the strip passes through; the bottom of the furnace body of the preheating furnace is equipped with a steel inlet, an entrance sealing device and an entrance steering roller; the upper part of the preheating furnace body is equipped with a preheating furnace gas collecting chamber; the lower part of the furnace body is equipped with a strip hole.
  • the lower partition forms an exhaust gas collection chamber and is connected to an exhaust gas fan through an exhaust gas discharge pipe.
  • a control valve is provided on the exhaust gas discharge pipe;
  • a number of heat exchange and jet air box units are arranged on both sides of the preheating furnace body below the preheating furnace gas chamber along the height direction of the furnace body, with a belt passage for the strip steel to pass through; each heat exchanger and The jet air box unit includes,
  • the air box body has a number of heat exchange tubes vertically arranged inside it, and a number of nozzles are arranged on one side of the air box body relative to the belt passage; an exhaust gas secondary mixing chamber connected to the heat exchange tubes is arranged between the upper and lower air box bodies. ; Pass protective gas into the wind box body, preferably, nitrogen and hydrogen protective gas is passed into the wind box body;
  • Circulation fan the port of its inlet pipe is arranged in the belt passage, and the port of its outlet pipe is located in the wind box;
  • Sealing devices for strip steel to pass through are respectively provided at the lower port of the strip passage and the strip holes of the upper and lower partitions. at.
  • the inlet sealing device and the sealing device for the steel strip to pass through are nitrogen sealing structures, using a nitrogen sealing chamber with a nitrogen injection pipe installed on it.
  • the spray radiant tube preheating device of the present invention directly uses heat exchange in the furnace (the heat exchange is not arranged outside the furnace) to heat the recycled nitrogen and hydrogen protective gas, and uses the heated nitrogen and hydrogen protective gas to be sprayed onto the upper and lower surfaces of the strip at high speed to force convection. Heat exchange realizes fast and efficient preheating of steel.
  • this method has less heat loss in the furnace body, more waste heat from the combustion exhaust gas, higher heating efficiency, and faster heating rate; moreover, the radiant tube combustion exhaust gas
  • the exhaust gas from the radiant tube gas collecting chamber enters the preheating furnace gas collecting chamber through the connecting pipe, and then passes from the heat exchanger chamber in the preheating furnace (the heat exchanger is not set outside the furnace) from top to bottom, and the pipes are routed during the process.
  • the combustion exhaust gas in the shell removal process and the nitrogen and hydrogen protective gas in the shell removal process are fully heat exchanged in the heat exchanger to heat the nitrogen and hydrogen protective gas.
  • the radiant tube combustion exhaust gas in the preheating furnace is never in direct contact with the strip steel, thereby avoiding The oxidation of the strip surface is eliminated; in addition, using the preheating device, the strip preheating temperature is high, which can reach at least 250°C and above, which is at least 50°C higher than the ordinary preheating zone steel temperature; if the spray preheating unit is arranged The quantity is sufficient, and the temperature of the radiant tube combustion exhaust gas coming out of the multi-stage preheating furnace can usually be lower than 200°C, and can be directly discharged. There is no need for additional investment to reuse the waste heat of the combustion exhaust gas outside the furnace.
  • the jet radiation composite heating device used in each production line of the present invention includes:
  • the furnace body has a composite heating body arranged along the height direction; the composite heating body includes,
  • the thermal insulation box has thermal insulation material on the inner wall of the shell; a mounting hole is provided in the center of one side of the thermal insulation box;
  • a circulation fan is installed at the installation hole of the insulation box, its air suction port corresponds to the axis of the installation hole, and the air outlet is located on the side of the casing;
  • the buffer cavity is arranged in the insulation box corresponding to the air suction port of the circulating fan.
  • the back of the buffer cavity is provided with a hot air outlet corresponding to the air suction port of the circulating fan.
  • the front of the buffer cavity is provided with a hot air inlet.
  • the buffer cavity is connected to the air suction port of the circulating fan.
  • the jet air box is an integrated structure;
  • Two air jet air boxes are arranged vertically and symmetrically on both sides of the hot air inlet on the front of the buffer cavity in the insulation box, forming a belt passage for the strip steel to pass through; one side edge of the two air jet air boxes located on both sides of the belt passage Several rows of jet nozzles are arranged at intervals in the height direction, and a gap is set between n rows of jet nozzles, n ⁇ 1; preferably, the diameter of the jet nozzle is 1/10 to 1/5 of the distance from the jet nozzle to the strip; More preferably, the jet nozzle adopts a round hole structure;
  • the radiant tubes include a connecting pipe section connected to the nozzles, a radiating tube section bent and extended from one end of the connecting pipe section, and a heat exchange tube section formed by extending and bending from one end of the radiating tube section;
  • the radiant tube sections correspond to the gaps between n rows of jet nozzles in the air jet air box, forming an alternating structure of air jet and radiation; preferably, the radiant tube sections, connecting tube sections, and heat exchange tube sections of the radiant tube are arranged in parallel.
  • the air jet sealing box is a high temperature air jet air box.
  • the temperature of the high-temperature gas in the high-temperature jet air box is above 750°C, such as 750-880°C.
  • the nozzle is a jet high-speed nozzle.
  • the speed of the jet gas at the nozzle outlet is not less than 50m/s.
  • the jet radiation composite heating device of the present invention adopts composite heating technology, which can organically combine high-speed and high-temperature jet heating technology with radiant tube heating technology, giving full play to the technical advantages of high-speed and high-temperature jet heating technology and radiant tube heating technology. .
  • the radiant tube is installed inside the high-speed jet air box, and the heat generated by the combustion gas of the radiant tube is quickly transferred to the strip through two methods: high-speed, high-temperature jet and radiation, achieving rapid heating of the strip.
  • the average heating speed of 1mm strip steel is no less than 40°C/s, which can greatly shorten the length of the heating furnace. For a unit with an annual output of 300,000 tons, the heating section has about 2 passes, reducing the thermal inertia of the furnace body;
  • the temperature of the heated circulating gas is relatively uniform, so the temperature distribution in the width direction of the strip during the heating process is relatively uniform.
  • the uniformity in the width direction of the strip during the heating process is controlled at ⁇ 5°C, thereby achieving the unit's Stable operation.
  • High-speed jet and radiation composite heating technology will significantly increase the production capacity of existing units and solve the problem of insufficient heating capacity on the production line.
  • the radiant tube of the jet radiation composite heat equalizing device of the present invention not only has a combustion radiation function (referring to the high-temperature section of the radiant tube between the two rows of nozzles), but also has a heat exchanger function to heat the circulating gas, so that The heat of the combustion gas in the radiant tube is quickly transferred to the strip through forced heat exchange to achieve rapid heating of the strip, which can greatly shorten the length of the heating furnace and reduce the thermal inertia of the large vertical continuous annealing furnace body.
  • Figure 1 shows the station layout of a traditional hot-dip galvanizing (GI) production line
  • Figure 2 shows the station layout of the traditional alloyed hot-dip galvanizing (GA) production line
  • Figures 3 to 10 are production line station layouts of Examples 1 to 8 of the rapid hot-dip galvanizing strip production line of the present invention.
  • Figure 11 is a schematic structural diagram of an embodiment of the injection direct fire preheating device according to the present invention.
  • Figure 12 is a schematic structural diagram of the preheating furnace in the embodiment of the injection direct fire preheating device according to the present invention.
  • Figure 13 is a schematic structural diagram 1 of an embodiment of the jet radiation composite heating/uniform heat device according to the present invention.
  • Figure 14 is a schematic structural diagram 2 of an embodiment of the jet radiation composite heating/uniform heat device according to the present invention.
  • Figure 15 is a schematic structural diagram of the composite heating body in the embodiment of the jet radiation composite heating/uniform heat device according to the present invention.
  • Figure 16 is a partial perspective view of the jet air box in the embodiment of the jet radiation composite heating/uniform heat device according to the present invention.
  • Figure 17 is a perspective view of the radiant tube in the embodiment of the jet radiation composite heating/uniform heat device according to the present invention.
  • Figures 18 to 25 are production line station layout diagrams of embodiments 1 to 8 of the rapid hot-dip galvanizing high-strength steel strip production line of the present invention.
  • Figure 26 is a schematic structural diagram of an embodiment of the jet radiant tube preheating device according to the present invention.
  • Figure 27 is a schematic structural diagram of the preheating furnace in the embodiment of the jet radiant tube preheating device according to the present invention.
  • Figures 28 to 41 are production line station layouts of Examples 1 to 14 of the rapid hot-dip galvanizing ultra-high strength strip steel according to the present invention.
  • Figure 42 is a schematic diagram of the station layout of a traditional continuous withdrawal production line
  • Figures 43 to 71 are schematic diagrams showing the layout of production line stations in Embodiments 1 to 29 of the rapid continuous strip steel withdrawal production line of the present invention.
  • Figures 72 to 78 are schematic diagrams of the production line station layout of Embodiments 1 to 7 of the invention for rapid continuous withdrawal of high-strength steel strips;
  • Figures 79 to 85 are production line station layout diagrams of embodiments 1 to 7 of the rapid continuous annealing ultra-high-strength strip steel production line of the present invention.
  • Figures 86 to 93 are schematic diagrams of the layout of production line stations in Examples 1 to 8 of the rapid continuous withdrawal of ultra-high strength strip steel production lines according to the present invention.
  • Figures 94 to 111 are production line station layout diagrams of embodiments 1 to 18 of the ultra-short flow dual-purpose strip production line of the present invention.
  • Figures 112 to 139 are production line station layout diagrams of embodiments 1 to 28 of the ultra-short process and ultra-high strength strip steel production line of the present invention.
  • Figures 140 to 147 are production line station layout diagrams of Examples 1 to 8 of the ultra-short process hot-dip galvanizing high-strength strip steel production line of the present invention.
  • Figures 148 to 153 are production line station layouts of Examples 1 to 6 of the flexible cold-rolled strip steel post-processing production line suitable for producing various high-strength steels according to the present invention
  • Figures 154 to 159 are production line station layouts of Examples 1 to 6 of the flexible cold rolling post-processing production line suitable for producing various ultra-high-strength strip steels according to the present invention
  • Figures 160 to 166 are production line station layouts of Examples 1 to 7 of the flexible cold-rolled strip steel post-processing line suitable for producing various high-strength steels according to the present invention
  • Figures 167 to 174 are production line station layouts of Examples 1 to 8 of the flexible production line suitable for various ultra-high strength strip steels according to the present invention.
  • Figures 175 to 186 are production line station layout diagrams of Examples 1 to 12 of the ultra-high strength strip production line for continuous withdrawal or hot-dip galvanizing according to the present invention
  • Figures 187 to 198 are production line work station layout diagrams of Examples 1 to 12 of the continuous retreat or hot-dip galvanizing dual-purpose high-strength strip steel production line of the present invention.
  • the cleaning station includes an alkali spray section, an alkali brushing section, an electrolytic cleaning section, a hot water brushing or a cold water abrasive roller brushing section and a hot water rinsing section, or even a simple
  • the combined use of high-pressure water jet brushing section, ultrasonic cleaning section, high-pressure cleaning section and other new cleaning equipment are considered to be the derived production lines of the present invention, and are also within the scope of protection of the present invention.
  • the finishing station includes equipment such as trimming and oiling, which is also within the scope of the present invention.
  • the rapid hot-dip galvanizing strip production line of the present invention includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - outlet looper - smoothing - coiling; wherein,
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, and a balanced heat preservation section. , secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the injection direct fire preheating section uses the direct fire heating section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip galvanizing strip production line includes the following in order: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - Export looper - flattening - coiling; among them,
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced insulation section, and a secondary reheating section. , furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating section not only uses radiant tubes to radiate and heat the strip, but also uses the radiant tube combustion exhaust gas to heat recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip galvanizing strip production line includes the following stations in order: uncoiling-welding-entrance looper-cleaning-central continuous post Processing-export looper-flattening-coiling; among which,
  • the central continuous post-processing station includes a jet direct fire preheating section, a direct fire heating section, a radiant tube heating section, a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, and a balanced heat preservation section. section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the characteristic of the injection direct fire injection preheating section is that the direct fire heating section is used to burn the exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip galvanizing strip production line includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - outlet looper - leveling - coiling; among them,
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced insulation section, and a secondary reheating section. section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating section and the soaking section use radiant tubes to radiate the strip steel, and also use the radiant tubes to burn exhaust gas to heat recycled nitrogen and hydrogen protective gases, and then the nitrogen and hydrogen protective gases are sprayed onto the upper and lower surfaces of the strip steel to achieve forced convection. Heat exchange.
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • Embodiment 5 shows Embodiment 5 of the present invention.
  • the following work stations are included: Uncoiling-Welding-Inlet Loop-Cleaning-Central Continuous Post-processing-Exit Loop-Smoothing-Coiling take; among them,
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, and a balanced insulation section. , secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling section.
  • the characteristic of the injection direct fire injection preheating section is that the direct fire heating section is used to burn the exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid alloying hot-dip galvanized strip production line includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-exit looper-flattening-coiling; wherein,
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced insulation section, and a secondary reheating section. , furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating section not only uses radiant tubes to radiate and heat the strip, but also uses the radiant tube combustion exhaust gas to heat recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid alloying hot-dip galvanized strip production line includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-exit looper-flattening-coiling; wherein,
  • the central continuous post-processing station includes a jet direct fire preheating section, a direct fire heating section, a radiant tube heating section, a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, and a balanced heat preservation section. section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling section.
  • the direct-fire injection preheating section uses the direct-fire heating section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid alloying hot-dip galvanized strip production line includes the following stations in order: Uncoiling-Welding-Inlet Loop-Cleaning-Central Continuous post-processing-export looper-flattening-coiling; among which,
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, a balanced insulation section, and a secondary reheating section. section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating section and the soaking section use radiant tubes to radiate the strip steel, and also use the radiant tubes to burn exhaust gas to heat recycled nitrogen and hydrogen protective gases, and then the nitrogen and hydrogen protective gases are sprayed onto the upper and lower surfaces of the strip steel to achieve forced convection. heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • an optional movable post-plating quick cooling section is provided behind the air knife section of the central continuous post-processing station and before the post-plating cooling section.
  • the strip steel is hot-dip galvanized from the zinc pot section through the air knife section to control the coating weight.
  • the injection direct fire preheating device of the present invention includes: a direct fire furnace 1 and a preheating furnace 2; wherein,
  • the direct-fired stove 1 includes:
  • the upper and lower ends of the furnace shell 11 are respectively provided with a furnace top roller chamber 101 and a furnace bottom roller chamber 102; the furnace top roller chamber 101 and the furnace bottom roller chamber 102 are respectively provided with steering rollers 12 and 12'; the furnace shell 11 is provided along the height direction.
  • Several direct fire heating areas 111 are provided with several direct fire burners; the upper side wall of the furnace shell 11 is provided with two through holes, and are arranged symmetrically left and right;
  • the preheating furnace 2 includes:
  • the upper side wall of the furnace body 21 is provided with two connection holes, which are symmetrically arranged left and right, and are respectively connected to the through holes in the upper part of the furnace shell 11 of the direct furnace 1 through communication pipes 22; the top of the furnace body 21 is provided with the direct furnace 1
  • the top roller chamber 101 corresponds to the furnace throat 211 for strip steel to pass through; the bottom of the furnace body 21 is provided with a strip entrance and a corresponding sealing device 212 and a steering roller 23; the upper part of the furnace body 21 is provided with an upper partition with a hole for wearing the strip.
  • a direct-fired combustion exhaust gas secondary combustion chamber 202 is provided below the direct-fired exhaust gas upper gas collecting chamber 201, and the direct-fired combustion exhaust gas secondary combustion chamber 202 is equipped with at least one open flame burner 24 ;
  • the lower part of the furnace body 21 is provided with a lower partition 214 with holes to form a direct-fired exhaust gas lower gas collecting chamber 203, and is connected to an exhaust gas fan 25 through an exhaust gas discharge pipe 215;
  • a number of heat exchange and jet air box units 26 are arranged along the height direction of the furnace body 21 on both sides below the direct-fired combustion exhaust gas secondary combustion chamber 202 in the furnace body 21, with a belt passage 204 formed in the middle for the strip steel to pass through;
  • Each heat exchange and jet air box unit 26 includes,
  • the wind box body 261 has a number of heat exchange tubes 262 vertically arranged in it.
  • the wind box body 261 is provided with a number of nozzles 263 on one side of the belt passage 204; the heat exchange tubes 262 are arranged between the upper and lower wind box bodies 261.
  • the connected exhaust gas secondary mixing chamber 205; nitrogen and hydrogen protective gas is introduced into the wind box body 261;
  • the circulation fan 264 has an inlet pipe port located in the belt passage 204 and an outlet pipe port located in the wind box body 261;
  • a plurality of sealing devices 27, 27’, and 27′′ for the steel strip to pass through are respectively provided at the upper and lower ports of the strip passage 204 and at the strip holes of the upper and lower partitions 213 and 214.
  • a combustion exhaust gas thermometer 28 is also provided in the direct-fired combustion exhaust gas secondary combustion chamber 202.
  • the sealing devices 27, 27', and 27" are nitrogen-sealed structures, using nitrogen-sealed chambers with nitrogen injection pipes on them.
  • the exhaust gas discharge pipe 215 is provided with a control valve 216.
  • the strip 100 runs upward through the steering roller in front of the direct-fired furnace. It is first sealed by the preheating furnace entrance sealing device and then enters the preheating furnace 2 for preheating. Then it enters the top roller chamber of the direct-fired furnace 1. After being turned by the steering roller, it enters the direct-fired furnace. Furnace 1 performs direct fire heating, and then enters the furnace bottom roller chamber of direct fire furnace 1, and continues to operate after being turned by the steering roller.
  • the direct-fired combustion exhaust gas heats the nitrogen and hydrogen protective gas through the heat exchange pipe and then the temperature of the exhaust gas drops (the nitrogen and hydrogen protective gas is blown to the upper and lower surfaces of the strip steel to preheat the strip steel under the action of the circulating fan).
  • the cooled nitrogen and hydrogen protective gas is
  • the working side (WS side) and driving side (DS side) of the preheating furnace are sucked into the air box by the circulating fan 264 for heat exchange with the heat exchange pipe; the direct-fired combustion exhaust gas passes through the heat exchanger and the heat exchanger from top to bottom.
  • the jet air box unit under the suction of the variable frequency exhaust gas fan 25, passes through the exhaust gas discharge pipe 215 first through the waste heat boiler 400 for secondary utilization of the waste heat of the combustion exhaust gas outside the furnace, and then enters the chimney 500 for final discharge.
  • the jet radiation composite heating/uniform heat device includes:
  • the furnace body 4 has a composite heating body 5 arranged along the height direction; the composite heating body 5 includes,
  • the thermal insulation box 51 is provided with thermal insulation material on the inner wall of the casing; a mounting hole is provided in the center of one side of the thermal insulation box 51;
  • the circulation fan 52 is provided at the installation hole of the insulation box 51, its air suction port 521 corresponds to the axis of the installation hole, and the air outlet 522 is provided on the side of the casing;
  • the buffer cavity 53 is provided in the insulation box 51 corresponding to the air suction port of the circulation fan 52.
  • the back side of the buffer cavity 53 is provided with a hot air outlet 531 corresponding to the air suction port of the circulation fan 52, and the front side of the buffer cavity is provided with a hot air inlet 532;
  • Two jet air boxes 54, 54' are vertically symmetrically arranged on both sides of the hot air inlet on the front of the buffer cavity 53 in the insulation box 51, forming a belt passage 200 for the steel strip 100 to pass through; located in the belt passage 100 Several rows of jet nozzles 55, 55' are arranged on one side of the two jet air boxes 54 and 54' on both sides at intervals along the height direction, and a gap 300 is set between n rows of jet nozzles, n ⁇ 1;
  • a number of radiant tubes 56, 56' are symmetrically arranged in the two jet air boxes 54, 54'.
  • the tube 56 includes a connecting tube section 561 connected to the nozzle, a radiating tube section 562 bent and extended from one end of the connecting tube section 561, and a heat exchange tube section 563 formed by extending and bent from one end of the radiating tube section 562; the radiating tube section 562 corresponds to
  • the gaps 300 provided between n rows of jet nozzles in the jet air box 54 form an alternating structure of jet and radiation.
  • the buffer cavity and the jet air box are of an integrated structure.
  • the diameter of the jet nozzle is 1/10 to 1/5 of the distance from the jet nozzle to the strip.
  • the jet nozzle adopts a circular hole structure.
  • the radiant tube adopts a spatial four-stroke structure to form four parallel tube sections, one of which is a radiant tube section, and the rest are connecting tube sections and heat exchange tube sections.
  • the knife After controlling the weight of the coating, the knife performs post-coating cooling, and then finally water-cools to room temperature. After being flattened, it enters the outlet looper, and then is coiled to complete production.
  • the yield strength of the final product strip steel is 365MPa
  • the tensile strength is 685MPa
  • the elongation at break is 26%.
  • the yield strength of the final product strip is 726MPa, the tensile strength is 1058MPa, and the elongation at break is 19%.
  • the weight of the coating is controlled by an air knife and then cooled after plating, and then finally water-cooled to room temperature. After smoothing It enters the outlet looper and then is rolled up to complete production.
  • the yield strength of the final product strip steel is 398MPa, the tensile strength is 696MPa, and the elongation at break is 28%.
  • the weight of the coating is controlled by an air knife and then cooled after plating. Then, it is finally water-cooled to room temperature, and then enters the outlet after being flattened. The looper is then rolled up to complete production.
  • the yield strength of the final product strip is 715MPa
  • the tensile strength is 1036MPa
  • the elongation at break is 21%.
  • the knife controls the weight of the coating and then alloys and heats it to 500°C.
  • the alloying is soaked at 500°C for 18 seconds, then cooled after plating, and then finally water-cooled to room temperature. After being flattened, it enters the outlet looper, and then is coiled to complete production.
  • the yield strength of the final product strip is 550MPa, the tensile strength is 837MPa, and the elongation at break is 19%.
  • the rapid hot-dip pure zinc high-strength strip production line of the present invention includes the following stations in sequence: uncoiling-welding-entrance looper- Central continuous post-processing - smoothing - outlet looper - coiling; wherein, the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, and a slow Cold section, high hydrogen cooling section, reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating section In addition to using radiant tubes to radiate and heat the strip, the jet radiation composite heating section also uses the radiant tube combustion exhaust gas to heat recycled nitrogen-hydrogen protective gas or full hydrogen gas, and then the nitrogen-hydrogen protective gas or full hydrogen gas is injected into the strip.
  • the upper and lower surfaces realize forced convection heat exchange; the transverse magnetic induction heating section is used to further rapidly increase the temperature of the high-temperature strip; the reheating section and the secondary reheating section both use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip pure zinc high-strength strip production line includes the following stations in sequence: uncoiling - welding - entrance looper - central continuous back Processing - smoothing - outlet looper - coiling; wherein, the central continuous post-processing station includes a spray radiant tube preheating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, and a slow cooling section. , high hydrogen cooling section, reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the injection radiant tube preheating section uses the radiant tube heating section and the radiant tube soaking section to burn the exhaust gas to heat the recycled nitrogen and hydrogen protective gas in the furnace, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange. ;
  • the transverse magnetic induction heating section is used to further rapidly increase the temperature of high-temperature strip steel
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip pure zinc strip production line includes the following stations in order: uncoiling - welding - entrance looper - central continuous post-processing - leveling - exit looper - coiling;
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, a reheating section, and a balancing section. Insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating device not only uses radiant tubes to radiate and heat the strip, but also uses the radiant tube combustion exhaust gas to heat recycled nitrogen-hydrogen protective gas or full hydrogen gas, and then the nitrogen-hydrogen protective gas or full hydrogen gas is injected into the strip.
  • the upper and lower surfaces realize forced convection heat exchange; the transverse magnetic induction heating section is used to further rapidly increase the temperature of the high-temperature strip; the reheating section and the secondary reheating section both use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip pure zinc high-strength strip production line includes the following stations in order: uncoiling - welding - entrance looper - central continuous post-processing - leveling - outlet looper - coiling ;
  • the central continuous post-processing station includes a jet radiant tube preheating section, a radiant tube heating section, a transverse magnetic induction heating section, a jet radiation composite soaking section, a slow cooling section, a high hydrogen cooling section, and a reheating section. , balanced insulation section, secondary reheating section, furnace nose section, Zinc pot section, air knife section, post-plating cooling section and final water cooling section.
  • the injection radiant tube preheating device uses the combustion exhaust gas in the radiant tube heating section and the radiant tube soaking section to heat the recycled nitrogen and hydrogen protective gas in the furnace, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange. ;
  • the transverse magnetic induction heating section is used to further rapidly increase the temperature of the high-temperature strip; the reheating section and the secondary reheating section both use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the hot-dip galvanizing is alloyed hot-dip galvanizing;
  • the rapid alloying hot-dip galvanizing strip production line includes the following stations in sequence: uncoiling - Welding - Inlet looper - Central continuous post-processing - Leveling - Exit looper - Coiling; wherein, the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, Radiant tube soaking section, slow cooling section, high hydrogen cooling section, reheating section, balanced heat preservation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section section, post-plating cooling section and final water cooling section.
  • the jet radiation composite heating device not only uses radiant tubes to radiate and heat the strip, but also uses the radiant tube combustion exhaust gas to heat recycled nitrogen-hydrogen protective gas or full hydrogen gas, and then the nitrogen-hydrogen protective gas or full hydrogen gas is sprayed onto the top and bottom of the strip.
  • the surface realizes forced convection heat exchange; the transverse magnetic induction heating section is used to further rapidly increase the temperature of the high-temperature strip; the reheating section and the secondary reheating section both use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the hot-dip galvanizing is alloyed hot-dip galvanizing;
  • the rapid alloying hot-dip galvanizing strip production line includes the following stations in sequence: uncoiling - Welding - Inlet looper - Central continuous post-processing - Leveling - Exit looper - Coiling; wherein, the central continuous post-processing station includes a jet radiant tube preheating section, a radiant tube heating section, and a transverse magnetic induction heating section.
  • radiant tube soaking section slow cooling section, high hydrogen cooling section, reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying homogenization section Hot section, post-plating cooling section and final water cooling section.
  • the injection radiant tube preheating section uses the radiant tube heating section and the radiant tube soaking section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • the transverse magnetic induction heating section is used to further rapidly increase the temperature of the high-temperature strip; the reheating section and the secondary reheating section both use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • hot-dip galvanizing is alloyed hot-dip galvanizing;
  • the rapid alloyed hot-dip galvanizing strip production line includes the following work stations in sequence: uncoiling - welding - entrance looper - central continuous Post-processing - flattening - outlet looper - coiling; wherein, the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a jet radiation composite soaking section, and a slow cooling section. section, high hydrogen cooling section, reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final Water cooling section.
  • the jet radiation composite heating section not only uses radiant tubes to radiate the strip steel, but also uses radiant tube combustion exhaust gas to heat the cycle.
  • the nitrogen-hydrogen protective gas or full hydrogen gas is recycled, and then the nitrogen-hydrogen protective gas or full hydrogen gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange.
  • the transverse magnetic induction heating section is used to further rapidly increase the temperature of the high-temperature strip; the reheating section and the secondary reheating section both use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • hot-dip galvanizing is alloyed hot-dip galvanizing;
  • the rapid alloyed hot-dip galvanizing strip production line includes the following workstations in sequence: uncoiling - welding - entrance looper - central continuous Post-processing - smoothing - outlet looper - coiling; wherein, the central continuous post-processing station includes a jet radiant tube preheating section, a radiant tube heating section, a transverse magnetic induction heating section, a jet radiant composite soaking section, and a slow Cold section, high hydrogen cooling section, reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and Final water cooling section.
  • the injection radiant tube preheating section uses the radiant tube heating section and the radiant tube soaking section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • the transverse magnetic induction heating section is used to further rapidly increase the temperature of the high-temperature strip; the reheating section and the secondary reheating section both use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • optional mobile post-plating rapid cooling section equipment is installed after the air knife section and before the post-plating cooling section; after the strip is hot-dip galvanized from the zinc pot section and passes through the air knife section to control the coating weight, you can choose to use the mobile post-plating rapid cooling section.
  • the cold section is used for rapid cooling after plating, or it is not necessary to use the mobile post-plating rapid cooling section for natural cooling and then post-plating cooling to achieve continuous production of hot-dip galvanized strips.
  • the jet radiant tube preheating device includes:
  • Radiant tube heating furnace 1 has a furnace top roller chamber 101 located above the furnace body, and a steering roller 102 is provided in the furnace top roller chamber 101;
  • the radiant tube exhaust gas collection chamber 2 is connected to the furnace body of the radiant tube heating furnace 1 through the connecting pipe 21;
  • Preheating furnace 3 including:
  • the preheating furnace body 31 has a connecting hole on its upper side wall, and is connected to the radiant tube exhaust gas collecting chamber 2 through a connecting pipe 32; a furnace throat 311 corresponding to the furnace top roller chamber 101 of the radiant tube heating furnace 1 and for the strip to pass through is provided at the top of the preheating furnace body 31; a strip steel inlet and an inlet sealing device 33 and an inlet turning roller are provided at the bottom of the preheating furnace body 31; a preheating furnace collecting chamber 312 is provided at the upper part of the preheating furnace body 31; a lower baffle 313 with a through hole is provided at the lower part of the preheating furnace body 31 to form a lower exhaust gas collecting chamber 314, and is connected to an exhaust gas fan 35 through an exhaust gas exhaust pipe 34, and is discharged from the chimney 500;
  • a plurality of heat exchange and jet air box units 36 are arranged on both sides below the preheating furnace gas collecting chamber 312 in the preheating furnace body 31 along the height direction of the preheating furnace body 31, with a through hole for strip steel passing through the middle.
  • each heat exchange and jet air box unit 36 includes,
  • the wind box body 361 has a number of heat exchange tubes 362 vertically arranged in it.
  • the wind box body 362 is provided with a number of nozzles 363 on one side of the belt passage 315; the heat exchange tubes 362 are arranged between the upper and lower wind box bodies 361.
  • the connected exhaust gas secondary mixing chamber 365; nitrogen and hydrogen protective gas is introduced into the wind box body 361;
  • the circulation fan 364 has an inlet pipe port located in the belt passage 315 and an outlet pipe port located in the wind box body 361;
  • the sealing device 37 for the strip to pass through is provided at the lower port of the strip passage 315 and the strip hole of the lower partition 313 .
  • the inlet sealing device 33 and the sealing device 37 are nitrogen sealing structures, using a nitrogen sealing chamber with a nitrogen injection pipeline provided thereon.
  • the exhaust gas discharge pipe 34 is provided with a control valve 38 .
  • the strip 100 runs upward after being turned by the inlet steering roller. After being sealed by the inlet sealing device, it enters the preheating furnace 3 for preheating treatment. Then it enters the furnace top roller chamber. After being turned by the steering roller, it enters the radiant tube heating furnace 1; radiant tube heating The combustion exhaust gas enters the radiant tube exhaust gas collecting chamber 2 and is connected to the preheating furnace gas collecting chamber 312 of the preheating furnace 1 through the connecting pipe 32.
  • the preheating furnace gas collecting chamber 312 is a closed gas collecting chamber to ensure that the exhaust gas in it is connected with the strip steel. 100 non-contact; the radiant tube combustion exhaust gas accumulates in the air collection chamber of the preheating furnace, and the radiant tube combustion exhaust gas is first used to preheat the combustion air required for its own combustion.
  • the high-temperature radiant tube combustion exhaust gas in the preheating furnace gas collecting chamber 312 continuously passes through the air-jet air box units connected in series one after another.
  • the air-jet air box units are equipped with heat exchange tubes (tubes) as heat exchangers inside.
  • the combustion exhaust gas of the radiant tube heats the nitrogen and hydrogen protective gas through the heat exchanger, and the heated nitrogen and hydrogen protective gas is blown to the upper and lower surfaces of the strip steel under the action of the circulating fan. Tropical steel.
  • the radiant tube combustion exhaust gas flows from top to bottom from the inside of the heat exchange tube.
  • heat exchange is performed to heat the nitrogen and hydrogen protective gas injected in the cycle, and then enters the exhaust gas secondary mixing chamber 365 between the jet air box units for secondary mixing.
  • the exhaust gas temperature is homogenized, and then enters the downward furnace heat exchange and jet air box unit until it reaches the bottom nitrogen sealing device, and finally enters the exhaust gas collection chamber 314.
  • the nitrogen and hydrogen protective gas passes between the heat exchange tube bundles, is heated, and is continuously sprayed from the nozzle to the upper and lower surfaces of the strip to preheat the strip under the action of the circulating fan.
  • the air suction port of the circulating fan is connected to the DS side and WS side of the jet air box unit by the pipeline in the furnace.
  • the nitrogen-hydrogen mixed gas is sprayed onto the surface of the strip and is extracted from both sides, and then is blown out by the circulating fan. It is sprayed onto the upper and lower surfaces of the strip through the heat exchanger to achieve circular injection of nitrogen and hydrogen mixed gas to heat the strip.
  • the production line layout is shown in Figure 3.
  • the main chemical composition (mass%) of the substrate is 0.12% C-0.41% Si-1.90% Mn.
  • the strip is uncoiled, welded, and the entrance looper passes through , after cleaning, use jet radiation composite heating to 500°C, then the radiant tube is heated to 700°C, then transverse magnetic induction heating to 810°C, soak the radiant tube at 810°C for 40 seconds, slowly cool to 670°C, and cool to 670°C with high hydrogen.
  • the reheating section passes through the reheating section (the reheating function can be turned off), the equalization insulation section and the secondary reheating section (the secondary reheating function can be turned off), and then immersed in the zinc pot through the furnace nose for hot-dip galvanizing.
  • the knife After controlling the weight of the coating, the knife performs post-plating cooling, and then is finally water-cooled to room temperature. After being flattened, it enters the outlet looper. It is then rolled up to complete production.
  • the yield strength of the final product strip is 355MPa, the tensile strength is 665MPa, and the elongation at break is 25%.
  • a hot-dip galvanized high-strength strip is produced.
  • the production line layout is shown in Figure 4.
  • the strip whose main chemical composition (mass%) of the substrate is 0.18% C-1.80% Si-2.2% Mn is uncoiled, welded, and the entrance looper passes through , after cleaning, use the jet radiant tube to preheat to 350°C, then heat the radiant tube to 810°C, then heat it to 910°C by transverse magnetic induction, soak the radiant tube at 910°C for 60 seconds, slowly cool to 670°C, and cool with high hydrogen to 230°C, then heated to 400°C, balanced heat preservation at 400°C, then reheated to 458°C for a second time and then immersed in the zinc pot through the furnace nose for hot-dip galvanizing.
  • the weight of the coating was controlled by an air knife and then cooled after plating.
  • the water is cooled to room temperature, and after being flattened, it enters the outlet looper, and then is rolled up to complete production.
  • the yield strength of the final product strip steel is 705MPa, the tensile strength is 1019MPa, and the elongation at break is 22%.
  • a hot-dip galvanized high-strength strip is produced.
  • the production line layout is shown in Figure 7.
  • the strip whose main chemical composition (mass%) of the substrate is 0.085% C-0.16% Si-1.90% Mn is uncoiled, welded, and the entrance looper passes through , after cleaning, use jet radiation composite heating to 550°C, then the radiant tube is heated to 750°C, then transverse magnetic induction heating to 820°C, soak the radiant tube at 820°C for 60 seconds, slowly cool to 670°C, and cool to 670°C with high hydrogen.
  • the reheating section passes through the reheating section (the reheating function can be turned off), the equalization insulation section and the secondary reheating section (the secondary reheating function can be turned off), and then immersed in the zinc pot through the furnace nose for hot-dip galvanizing.
  • the knife controls the weight of the coating and then alloys and heats it to 500°C.
  • the alloying is soaked at 500°C for 18 seconds, then cooled after plating, and then finally water-cooled to room temperature. After being flattened, it enters the outlet looper, and then is coiled to complete production.
  • the yield strength of the final product strip is 565MPa
  • the tensile strength is 826MPa
  • the elongation at break is 18%.
  • a hot-dip galvanized high-strength strip is produced.
  • the production line layout is shown in Figure 8.
  • the strip whose main chemical composition (mass%) of the substrate is 0.18% C-1.75% Si-2.65% Mn is uncoiled, welded, and the entrance looper passes through , after cleaning, preheat the radiant tube to 275°C by spraying it, heat the radiant tube to 750°C, and then heat it to 850°C by transverse magnetic induction.
  • the radiant tube is soaked at 850°C for 60 seconds, slowly cooled to 670°C, and cooled to 670°C with high hydrogen.
  • the furnace nose is immersed in the zinc pot for hot-dip galvanizing.
  • the weight of the coating is controlled by an air knife, it enters the alloying heating furnace and is heated to 510°C. It is kept at 500°C in the alloying soaking furnace for 18 seconds, and then cooled to 140°C by the post-plating cooling equipment. Then it is finally water-cooled to below 45°C, then leveled and then entered into the outlet looper, and then coiled to complete production.
  • the yield strength of the final product strip steel is 1088MPa, the tensile strength is 1203MPa, and the elongation at break is 15%.
  • the rapid hot-dip pure zinc ultra-high strength strip production line of the present invention includes the following stations in sequence: uncoiling-welding-entrance loop- Cleaning-central continuous post-processing-smoothing-export looper-coiling;
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, and a reheating section. , balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section,
  • the injection direct fire preheating section uses the direct fire heating section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip pure zinc ultra-high-strength strip production line includes the following stations in order: Uncoiling-Welding-Inlet Loop-Cleaning-Central Continuous post-processing-smoothing-export looper-coiling;
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, an aerosol cooling section, and a pickling section. , reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section;
  • the characteristic of the injection direct-fire preheating section is that the direct-fired heating section is used to burn the exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip pure zinc ultra-high-strength strip production line includes the following stations in order: Uncoiling-Welding-Inlet Loop-Cleaning-Central Continuous post-processing-smoothing-export looper-coiling;
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a water quenching cooling section, and a pickling section. , reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section;
  • the injection direct fire preheating section uses the direct fire heating section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • the rapid hot-dip pure zinc ultra-high strength strip production line includes the following stations: Uncoiling-Welding-Inlet Looper-Cleaning-Central Continuous Post-processing-smoothing-export looper-coiling;
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, an aerosol cooling section, and a water quenching cooling section. section, pickling section, reheating section, equalization insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, post-plating cooling section and final water cooling section;
  • the injection direct fire preheating section uses the direct fire heating section to burn exhaust gas to heat the recycled nitrogen and hydrogen protective gas, and then the nitrogen and hydrogen protective gas is sprayed onto the upper and lower surfaces of the strip to achieve forced convection heat exchange;
  • Both the reheating section and the secondary reheating section use longitudinal magnetic induction heating equipment to rapidly heat the strip.
  • embodiments 5 to 7 of the present invention are based on embodiments 2 to 4, and a flash iron plating or flash nickel plating section is added after the pickling section, and the strip is flash plated before subsequent treatment.
  • an optional mobile post-plating quick cooling section is set up after the air knife section equipment and before the post-plating cooling section.
  • the strip is hot-dip galvanized from the zinc pot section and the coating weight is controlled by the air knife section equipment, you can choose to use the mobile post-plating quick cooling section.
  • the cold section is used for rapid cooling after plating, or it is not necessary to use the mobile post-plating rapid cooling section for natural cooling and then post-plating cooling to achieve continuous production of hot-dip galvanized strips.
  • the rapid hot-dip galvanizing ultra-high-strength strip production line includes the following stations in sequence: Uncoiling-Welding-Inlet Looper-Cleaning-Central Continuous post-processing-smoothing-export looper-coiling;
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section, and a reheating section. , balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling section.
  • the rapid hot-dip galvanizing ultra-high-strength strip production line includes the following stations: Uncoiling-Welding-Inlet Looper-Cleaning-Central Continuous Post Processing-flattening-export looper-coiling;
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, an aerosol cooling section, and a pickling section. , reheating section, balanced insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling section equipment.
  • the rapid hot-dip galvanizing ultra-high-strength strip production line includes the following stations in sequence: Uncoiling-Welding-Inlet Loop-Cleaning-Central Continuous post-processing-smoothing-export looper-coiling;
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a water quenching cooling section, and a pickling section. , reheating section, balanced heat preservation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, and post-plating cooling section and final water cooling section.
  • the rapid hot-dip galvanizing ultra-high-strength strip production line includes the following stations in sequence: Uncoiling-Welding-Inlet Looper-Cleaning-Central Continuous Post-processing-smoothing-export looper-coiling;
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, an aerosol cooling section, and a water quenching cooling section. section, pickling section, reheating section, equalizing insulation section, secondary reheating section, furnace nose section, zinc pot section, air knife section, alloying heating section, alloying soaking section, post-plating cooling section and final water cooling part.
  • Embodiments 12 to 14 of the present invention are based on Embodiments 9 to 11, adding a flash iron or flash nickel plating section after the pickling section, and flash plating the strip. Then perform subsequent processing.
  • an optional mobile post-plating quick cooling section equipment is set up in parallel with the alloying heating section.
  • the strip is hot-dip galvanized from the zinc pot section and passes through the air knife section to control the coating weight, if hot-dip pure zinc is produced product, the mobile post-plating quick cooling section is switched to online use, and the alloying heating section equipment is offline; if alloyed hot-dip galvanizing products are produced, the mobile post-plating quick cooling section equipment is switched to offline, and the alloying heating section equipment is switched to Use online.
  • the radiant tube soaking section is replaced with a jet radiation composite soaking section to achieve rapid adjustment of the strip soaking temperature when strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • a cleaning station is provided before the entrance looper station.
  • cleaning stations are provided before and after the entrance looper station.
  • a central looper station is provided before the leveling station and after the central continuous post-processing station.
  • a finishing station is provided between the coiling station and the outlet looper station, and the strip is coiled after finishing.
  • a tensioning and straightening station is also provided between the leveling station and the outlet looper station, and the strip can optionally undergo tensioning and straightening treatment before entering the outlet looper.
  • a surface post-processing station such as passivation or fingerprint resistance is also provided between the flattening station and the outlet looper station.
  • the strip steel can optionally undergo surface treatment such as passivation or fingerprint resistance before entering the outlet looper.
  • a tension and straightening station equipment and a surface post-treatment station such as passivation or fingerprint resistance are simultaneously provided between the flattening station and the exit looper station.
  • the strip steel can be selected for tension and straightening or/and passivation or fingerprint resistance. Wait for surface treatment before entering the outlet looper.
  • Seconds slow cooling to 675°C, high hydrogen cooling to 230°C, then heating to 420°C, at 420°C Balanced heat preservation, and then reheated to 460°C for a second time, then immersed in the zinc pot through the furnace nose for hot-dip galvanizing. After controlling the weight of the coating with an air knife, it is plated and then cooled to below 150°C. Then, it is finally water-cooled to room temperature, and then it is flattened and entered into the outlet looper. , and then coiled to complete production.
  • the yield strength of the final product strip steel is 702MPa, the tensile strength is 1051MPa, and the elongation at break is 22%.
  • the radiant tube is heated to 805°C, then the transverse magnetic induction is heated to 905°C, the radiant tube is soaked at 905°C for 65 seconds, slowly cooled to 675°C, then the aerosol is cooled to below 50°C for pickling, and then again Heated to 390°C, balanced heat preservation at 390°C and then reheated to 460°C, immersed in a zinc pot through the furnace nose for hot-dip galvanizing, controlled by an air knife to control the coating weight, then cooled to below 150°C, and then finally water-cooled to Room temperature, after being flattened, it enters the outlet looper, and then is rolled up to complete production.
  • the radiant tube is heated to 820°C, then transverse magnetic induction heating to 910°C, the radiant tube is soaked at 910°C for 56 seconds, slowly cooled to 670°C, then quenched with water and cooled to room temperature, then pickled, and then again Heated to 400°C, balanced heat preservation at 400°C and then reheated to 455°C, immersed in a zinc pot through the furnace nose for hot-dip galvanizing, controlled by an air knife to control the coating weight, then cooled to below 150°C, and then finally water-cooled to Room temperature, after being flattened, it enters the outlet looper, and then is rolled up to complete production.
  • the radiant tube is heated to 800°C, then transverse magnetic induction heating to 900°C, the radiant tube is soaked at 900°C for 68 seconds, slowly cooled to 660°C, then mist cooled to 410°C, then water quenched to Room temperature, then pickling, then reheated to 385°C, balanced and insulated at 385°C, then reheated to 455°C, immersed in the zinc pot through the furnace nose for hot-dip galvanizing, controlled by an air knife to control the coating weight, and then cooled after plating to below 150°C, and then finally water-cooled to room temperature. After being flattened, it enters the outlet loop and is then coiled to complete production.
  • the strip steel After uncoiling, welding, passing of the entrance looper, and cleaning, use spray direct fire to preheat to 360°C, then direct fire to 720°C, then radiant tube heating to 820°C, and then transverse magnetic induction Heating to 920°C, soaking the radiant tube at 920°C for 40 seconds, slowly cooling to 750°C, first aerosol cooling to 500°C, then water quenching to about 50°C, then pickling, then flash nickel plating, and then Heated to 410°C, balanced heat preservation at 410°C, then reheated to 455°C for a second time, immersed in a zinc pot through the furnace nose for hot-dip galvanizing, controlled by an air knife to control the coating weight, and then cooled to below 150°C, and then finally water-cooled to Room temperature, after being flattened, it enters the outlet looper, and then is rolled up to complete production.
  • the yield strength of the final product strip steel is 951MPa, the tensile strength is 1239
  • the radiant tube is heated to 820°C, then transverse magnetic induction heating to 910°C, the radiant tube is soaked at 910°C for 56 seconds, slowly cooled to 670°C, then quenched with water to cool to room temperature, then pickled, and then Flash nickel plating, then reheat to 400°C, balance and maintain at 400°C, then reheat to 455°C, immerse in the zinc pot through the furnace nose and hot dip galvanize, use an air knife to control the coating weight, and then cool to 150°C Next, it is finally water-cooled to room temperature, flattened and then entered into the outlet looper, and then coiled to complete production.
  • the radiant tube is heated to 800°C, then transverse magnetic induction heating to 900°C, the radiant tube is soaked at 900°C for 68 seconds, slowly cooled to 660°C, then mist cooled to 410°C, then water quenched to Room temperature, then pickling, then flash iron plating, then reheated to 385°C, balanced and insulated at 385°C, then reheated to 455°C, immersed in a zinc pot through the furnace nose, hot dip galvanized, and controlled by an air knife to control the coating weight After plating, it is cooled to below 150°C, and then finally water-cooled to room temperature. After being flattened, it enters the outlet looper, and then is coiled to complete production.
  • the radiant tube is heated to 805°C, then the transverse magnetic induction is heated to 905°C, the radiant tube is soaked at 905°C for 65 seconds, slowly cooled to 675°C, then the aerosol is cooled to below 50°C for pickling, and then again Heated to 390°C, balanced heat preservation at 390°C and then reheated to 460°C, immersed in the zinc pot through the furnace nose for hot-dip galvanizing, controlled the weight of the coating with an air knife, then entered the alloying heating section and heated to 510°C, and then at 510 After alloying and soaking for 20 seconds at °C, it is then cooled to below 200°C after plating, and then finally water-cooled to room temperature. After being flattened, it enters the outlet looper, and then is coiled to complete production.
  • the radiant tube is heated to 820°C, then transverse magnetic induction heating to 910°C, the radiant tube is soaked at 910°C for 56 seconds, slowly cooled to 670°C, then quenched with water and cooled to room temperature, then pickled, and then again Heated to 400°C, balanced heat preservation at 400°C and then reheated to 460°C, immersed in the zinc pot through the furnace nose for hot-dip galvanizing, controlled the weight of the coating with an air knife, then entered the alloying heating section and heated to 515°C, and then at 510 After alloying and soaking for 18 seconds at °C, it is plated and then cooled to below 200°C. Then it is finally water-cooled to room temperature. After being flattened, it enters the outlet looper and is then coiled to complete production.
  • the radiant tube is heated to 800°C, then transverse magnetic induction heating to 900°C, the radiant tube is soaked at 900°C for 68 seconds, slowly cooled to 660°C, then mist cooled to 410°C, and then water quenched to Room temperature, then pickling, then reheated to 385°C, balanced and insulated at 385°C, then reheated to 460°C, immersed in the zinc pot through the furnace nose for hot-dip galvanizing, and the weight of the coating was controlled by an air knife before entering alloying heating The section is heated to 520°C, then alloyed and soaked at 515°C for 16 seconds for plating, then cooled to below 200°C, then finally water-cooled to room temperature, flattened and entered into the outlet looper, and then coiled to complete production.
  • the radiant tube is heated to 820°C, then transverse magnetic induction heating to 910°C, the radiant tube is soaked at 910°C for 56 seconds, slowly cooled to 670°C, then quenched with water to cool to room temperature, then pickled, and then Flash nickel plating, then reheat to 400°C, balance the heat at 400°C and then reheat to 460°C, immerse in the zinc pot through the furnace nose and hot dip galvanize, control the weight of the coating with an air knife, then enter the alloying heating section and heat to 530°C, then alloying and soaking at 520°C for 15 seconds for plating, then cooled to below 200°C, then finally water-cooled to room temperature, flattened and entered into the outlet looper, and then coiled to complete production.
  • the radiant tube is heated to 800°C, then transverse magnetic induction heating to 900°C, the radiant tube is soaked at 900°C for 68 seconds, slowly cooled to 660°C, then mist cooled to 410°C, then water quenched to Room temperature, then pickling, then flash iron plating, then reheated to 385°C, balanced and insulated at 385°C, then reheated to 465°C, immersed in the zinc pot through the furnace nose, hot-dip galvanized, and controlled by an air knife to control the coating weight
  • the post-alloying heating section is heated to 525°C, and then alloyed and soaked at 520°C for 18 seconds for plating, then cooled to below 200°C, and then finally water-cooled to room temperature. After being flattened, it enters the outlet looper, and then is coiled to complete production.
  • the rapid annealing strip steel production line of the present invention includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing -Smoothing-export looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a spray direct fire preheating device
  • the heating section adopts a direct fire heating section
  • the heat soaking section uses radiant tubes for heat soaking
  • the rapid cooling section adopts high hydrogen cooling, mist cooling or water quenching cooling.
  • Embodiments 1 to 3 of the present invention realize the simultaneous use of a spray direct-fire preheating device and high hydrogen cooling or mist cooling or water quenching cooling in one production line to perform rapid heating and rapid cooling processes to achieve continuous production of ultra-high-strength strip steel.
  • the rapid annealing strip steel production line of the present invention includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post Processing-flattening-export looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a high hydrogen cooling section and a water quenching cooling section, a reheating section, an over-aging section, a final jet cooling section, final water cooling section;
  • the preheating section adopts a spray direct fire preheating device
  • the heating section adopts a direct fire heating section
  • the rapid cooling section is arranged in parallel with high hydrogen cooling and aerosol cooling.
  • the strip steel can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the aerosol cooling section for aerosol cooling;
  • Example 4 simultaneously uses a spray direct fire preheating device, high hydrogen cooling and mist cooling to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing strip production line includes the following stations in order: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a spray direct fire preheating device
  • the heating section adopts a direct fire heating section
  • the rapid cooling section is arranged in parallel with high hydrogen cooling and water quenching cooling.
  • the strip steel can choose to go through the high hydrogen cooling section for high hydrogen cooling, or it can choose to go through the water quenching cooling section for water quenching cooling.
  • Embodiment 5 of the present invention simultaneously uses a spray direct fire preheating device, high hydrogen cooling and water quenching cooling to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing strip steel production line of the present invention includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post Processing-flattening-export looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a spray direct fire preheating device
  • the heating section adopts a direct fire heating section
  • the rapid cooling section adopts air mist cooling and water quenching cooling in parallel, and a connecting channel is provided between the air mist cooling and water quenching cooling;
  • the strip steel can be air mist cooled first and then water quenched, or can only be air mist cooled or only water quenched. cool down;
  • Embodiment 6 of the present invention simultaneously uses a spray direct fire preheating device, a mist cooling section and a water quenching cooling section to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing strip steel production line includes the following stations in order: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a spray direct fire preheating device
  • the heating section adopts a direct fire heating section
  • the rapid cooling section adopts high hydrogen cooling, aerosol cooling, and water quenching cooling to be arranged in parallel, and a connecting channel is provided between the aerosol cooling and water quenching cooling.
  • the aerosol cooling section and the water quenching cooling section are arranged in series.
  • the strip can be aerosol cooled first and then water quenched, or only aerosol cooled or only water quenched; the high hydrogen cooling section and (aerosol cooling section + water quenching cooling section) are arranged in parallel.
  • the strip steel can choose to go to the hydrogen cooling section, or you can choose to go to the gas mist cooling + water quenching cooling section for rapid cooling.
  • Example 7 simultaneously uses a spray direct fire preheating device, a high hydrogen cooling section and (aerosol cooling section + water quenching cooling section) to perform rapid heating and optional rapid cooling to achieve continuous ultra-high strength strip steel Production.
  • the rapid annealing strip steel production line includes the following stations in order: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - smoothing -Export looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a jet radiation composite heating device
  • the heating section adopts a radiant tube heating section
  • the rapid cooling section adopts high hydrogen cooling, mist cooling, or water quenching cooling
  • the heat soaking section uses radiant tubes for heat soaking.
  • Embodiments 8 to 10 of the present invention simultaneously adopt a jet radiation composite heating device and a rapid cooling method of high hydrogen cooling, aerosol cooling or water quenching cooling to perform rapid heating and rapid cooling processes to achieve ultra-high strength belts. Continuous production of steel.
  • the rapid cooling section adopts a high hydrogen cooling section and a mist cooling section arranged in parallel.
  • the strip steel can choose to go to the high hydrogen cooling section for high temperature cooling.
  • Example 11 simultaneously uses a jet radiation composite heating device, high hydrogen cooling and mist cooling methods to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid cooling section adopts The high hydrogen cooling section and the water quenching cooling section are arranged in parallel.
  • the strip steel can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the water quenching cooling section for water quenching cooling.
  • Example 12 simultaneously uses a jet radiation composite heating device, high hydrogen cooling and water quenching cooling methods to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing strip production line includes the following stations in order: uncoiling-welding-inlet looper-cleaning-central continuous post-processing-smoothing-outlet looper- take up;
  • the central continuous post-processing station includes a preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a jet radiation composite heating device
  • the heating section adopts a radiant tube heating section
  • the rapid cooling section is arranged in parallel with air mist cooling and water quenching cooling, and a connecting channel is provided between the air mist cooling and water quenching cooling, so that the air mist cooling section and the water quenching cooling section are arranged in series, and the strip can be air-cooled first.
  • Water quenching cooling may be followed by mist cooling, or only mist cooling or only water quenching cooling may be used.
  • Example 13 simultaneously uses a jet radiation composite heating device, a mist cooling section and a water quenching cooling section to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing strip production line includes the following stations in order: uncoiling-welding-inlet looper-cleaning-central continuous post-processing-smoothing-outlet looper- take up;
  • the central continuous post-processing station includes a preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a jet radiation composite heating device
  • the heating section adopts a radiant tube heating section
  • the rapid cooling section adopts high hydrogen cooling, gas mist cooling, and water quenching cooling to be arranged in parallel, and a connecting channel is provided between the gas mist cooling and water quenching cooling, forming a series arrangement of the gas mist cooling section and the water quenching cooling section.
  • the strip steel can be cooled by aerosol cooling first and then water quenching, or it can also be cooled by only aerosol cooling or only by water quenching; the high hydrogen cooling section is arranged in parallel with the (aerosol cooling section + water quenching cooling section), and the strip steel can choose to go higher In the hydrogen cooling section, you can also choose the gas mist cooling + water quenching cooling section for rapid cooling.
  • Example 14 simultaneously uses a jet radiation composite heating device, a high hydrogen cooling section and (aerosol cooling section + water quenching cooling section) to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing strip steel production line includes the following stations in order: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - smoothing -Export looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a soaking section, a slow cooling section, a rapid cooling section, Reheating section, over-aging section, final jet cooling section, final water cooling section;
  • the preheating section adopts a spray direct fire preheating device
  • the heating section adopts a direct fire heating section
  • the soaking section uses a jet radiation composite heating device for soaking
  • the rapid cooling section adopts high hydrogen cooling, mist cooling or water quenching cooling.
  • Examples 15 to 17 simultaneously adopt a jet direct fire preheating device and a rapid cooling method of high hydrogen cooling, aerosol cooling or water quenching cooling to perform rapid heating and rapid cooling processing, and use a jet radiation composite heating device Perform uniform heating to achieve continuous production of ultra-high-strength strip steel.
  • the rapid cooling section adopts high hydrogen cooling and gas mist cooling or water quenching cooling to be arranged in parallel.
  • the high hydrogen cooling section and the aerosol cooling section are arranged in parallel.
  • the strip steel can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the aerosol cooling section for aerosol cooling. or,
  • the high hydrogen cooling section and the water quenching cooling section are arranged in parallel.
  • the strip can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the water quenching cooling section for water quenching cooling.
  • the rapid annealing strip production line includes the following stations in sequence: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - leveling - outlet looper - coiling ;
  • the central continuous post-processing station includes a preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a spray direct fire preheating device
  • the heating section adopts a direct fire heating section
  • the soaking section uses a jet radiation composite heating device for soaking
  • the rapid cooling section is arranged in parallel with air mist cooling and water quenching cooling, and a connecting channel is provided between the air mist cooling and water quenching cooling, forming an air mist cooling section and a water quenching cooling section arranged in series.
  • the strip can be air mist cooled first and then Water quench cooling, or only aerosol cooling or only water quench cooling.
  • Example 20 simultaneously uses a jet direct fire preheating device, aerosol cooling section and water quenching cooling section equipment to perform rapid heating and optional rapid cooling processing, and uses a jet radiation composite soaking section for heat soaking to achieve ultra-high performance. Continuous production of high-strength steel strips.
  • the rapid annealing strip steel production line includes the following stations in sequence: uncoiling-welding-entry looper-cleaning-central continuous post-processing-levelling-exit looper-coiling ;
  • the central continuous post-processing station includes a preheating section, a heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a spray direct fire preheating device
  • the heating section adopts a direct fire heating section
  • the soaking section uses a jet radiation composite heating device for soaking
  • the rapid cooling section adopts high hydrogen cooling, aerosol cooling, and water quenching cooling to be arranged in parallel, and a connecting channel is provided between the aerosol cooling and water quenching cooling to form an aerosol cooling section and a water quenching cooling section arranged in series;
  • the strip steel can Aerosol cooling first and then water quenching cooling, or only aerosol cooling or only water quenching cooling;
  • the high hydrogen cooling section is arranged in parallel with (aerosol cooling section + water quenching cooling section), and the strip steel can choose to go to the high hydrogen cooling section , you can also choose to use the aerosol cooling + water quenching cooling section for rapid cooling;
  • Example 21 simultaneously uses a jet direct fire preheating device, a high hydrogen cooling section and (aerosol cooling section + water quenching cooling section) to perform rapid heating, optional rapid cooling, and a jet radiation composite heat equalizing device. Perform uniform heating to achieve continuous production of ultra-high-strength strip steel.
  • the rapid annealing strip steel production line includes the following stations in order: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - smoothing -Export looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a jet radiation composite heating device
  • the heating section adopts a radiant tube heating section
  • the rapid cooling section adopts high hydrogen cooling, aerosol cooling or water quenching cooling
  • the soaking section uses a jet radiation composite heating device for soaking.
  • the production lines of Examples 22 to 24 simultaneously adopt a jet radiation composite heating device and a rapid cooling method of high hydrogen cooling or mist cooling or water quenching cooling to perform rapid heating and rapid cooling processes, and use a jet radiation composite heat equalizing device. Perform uniform heating to achieve continuous production of ultra-high-strength strip steel.
  • the rapid cooling section adopts high hydrogen cooling and gas mist cooling or water quenching cooling to be arranged in parallel.
  • the high hydrogen cooling section and the aerosol cooling section are arranged in parallel.
  • the strip steel can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the aerosol cooling section for aerosol cooling. or,
  • the high hydrogen cooling section and the water quenching cooling section are arranged in parallel.
  • the strip can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the water quenching cooling section for water quenching cooling.
  • the rapid annealing strip production line includes the following stations in sequence: uncoiling-welding-entrance looper-cleaning-central continuous post-processing-flattening-exit looper-coiling;
  • the central continuous post-processing station includes a preheating section, a heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, a final jet cooling section, and a final water cooling section;
  • the preheating section adopts a jet radiation composite heating device
  • the heating section adopts a radiant tube heating section
  • the soaking section uses a jet radiation composite heating device for soaking
  • the rapid cooling section adopts air mist cooling and water quenching cooling to be arranged in parallel, and a connecting channel is provided between the air mist cooling and water quenching cooling to form the air mist cooling section and the water quenching cooling section to be arranged in series; the strip can be air-cooled first Water quenching cooling may be followed by mist cooling, or only mist cooling or only water quenching cooling may be used.
  • Example 27 simultaneously uses a jet radiation composite heating device, aerosol cooling and water quenching cooling to perform rapid heating and optional rapid cooling, and uses a jet radiation composite heat equalizing device for uniform heat to achieve ultra-high strength strip steel. Continuous production.
  • Embodiment 28 of the present invention is based on Embodiment 27.
  • the rapid cooling section adopts high hydrogen cooling, gas mist cooling, and water quenching cooling to be arranged in parallel, and there is a gap between gas mist cooling and water quenching cooling.
  • a connecting channel is provided to form an air mist cooling section and a water quenching cooling section arranged in series; the strip can be air mist cooled first and then water quenched, or can be only air mist cooled or only water quenched; the high hydrogen cooling section is connected with the (gas (Mist cooling section + water quenching cooling section) are arranged in parallel.
  • the strip steel can choose to go to the high hydrogen cooling section, or you can choose to go to the gas mist cooling + water quenching cooling section for rapid cooling.
  • Example 28 simultaneously uses a jet radiation composite heating device, a high hydrogen cooling section and (aerosol cooling section + water quenching cooling section) to perform rapid heating and optional rapid cooling, and uses a jet radiation composite heating device for homogenization. heat to achieve continuous production of ultra-high strength strip steel.
  • Embodiment 29 of the present invention is based on Embodiment 1, and an optional pickling section is provided after the final water cooling section.
  • the strip can choose to pass through the pickling section, or it can bypass the pickling section. part.
  • the main chemical composition (mass%) of the substrate is: 0.07% C-0.01% Si-0.8% Mn.
  • the strip is preheated to 358°C by spray direct fire, then heated to 650°C by direct fire, and then radiated
  • the tube is heated to 790°C, the radiant tube is soaked at 790°C for 50 seconds, slowly cooled to 670°C, high hydrogen cooled to 250°C, over-aging treated (reheating without input), and finally jet cooled to about 140°C. Water-cool to room temperature, flatten and then coil up to complete production.
  • the yield strength of the final product strip is 502MPa, the tensile strength is 613MPa, and the elongation at break is 16%.
  • the main chemical composition (mass%) of the substrate is: 0.06% C-0.01% Si-0.75% Mn.
  • the strip is preheated to 351°C by spray direct fire, then heated to 650°C by direct fire, and then radiated
  • the tube is heated to 790°C, the radiant tube is soaked at 790°C for 50 seconds, slowly cooled to 670°C, mist cooled to 270°C, and then subjected to over-aging treatment (reheating without input), and finally jet cooling to about 140°C
  • the water is cooled to room temperature, flattened and rolled up to complete production.
  • the yield strength of the final product strip is 536MPa, the tensile strength is 628MPa, and the elongation at break is 15%.
  • the main chemical composition (mass%) of the substrate is: 0.06% C-0.008% Si-0.7% Mn.
  • the strip is preheated to 360°C by spray direct fire, then heated to 660°C by direct fire, and then radiated
  • the tube is heated to 790°C, the radiant tube is soaked at 790°C for 50 seconds, slowly cooled to 670°C, water quenched to about 50°C, and then enters the over-aging section for heating to 230°C for over-aging treatment, and finally jet cooling to The temperature is around 140°C and finally water-cooled to room temperature, flattened and then rolled up to complete production.
  • the yield strength of the final product strip is 567MPa, the tensile strength is 689MPa, and the elongation at break is 13%.
  • the main chemical composition (mass%) of the substrate is: 0.065% C-0.009% Si-0.77% Mn.
  • the strip is preheated to 355°C by spray direct fire, then heated to 650°C by direct fire, and then radiated
  • the tube is heated to 785°C, the radiant tube is soaked at 785°C for 40 seconds, slowly cooled to 675°C, first aerosol cooled to 500°C, then quenched with water to cool to about 50°C, and then heated to 230°C using a longitudinal magnetic induction heater.
  • °C enters the over-aging section for over-aging treatment, and is finally air-cooled to about 140°C and finally water-cooled to room temperature. It is flattened and then rolled up to complete production.
  • the yield strength of the final product strip is 537MPa, the tensile strength is 663MPa, and the elongation at break is 15%.
  • the main chemical composition (mass%) of the substrate is: 0.095% C-0.17% Si-2.0% Mn.
  • the strip is heated to 670°C by jet radiation, and then heated to 810°C by the radiant tube.
  • the lower radiant tube is soaked for 30 seconds, slowly cooled to 675°C, and the high hydrogen jet is cooled to about 250°C.
  • the jet is cooled to about 140°C and finally water-cooled to Room temperature, flattened and then rolled up to complete production.
  • the yield strength of the final product strip is 530MPa, the tensile strength is 920MPa, and the elongation at break is 19%.
  • the main chemical composition (mass%) of the substrate is: 0.085% C-0.3% Si-2.3% Mn.
  • the strip is preheated to 355°C by spray direct fire, heated to 680°C by direct fire, and then radiant tube Heating to 800°C, then jet radiation composite soaking at 800°C for 40 seconds, slowly cooling to 675°C, high hydrogen jet cooling to about 230°C, and then entering the over-aging section (reheating without investment) for over-aging treatment. Finally, the air is cooled to about 140°C and finally water-cooled to room temperature. It is flattened and then rolled up to complete production.
  • the yield strength of the final product strip steel is 908MPa, the tensile strength is 1098MPa, and the elongation at break is 9%.
  • the main chemical composition (mass%) of the substrate is: 0.12% C-0.28% Si-2.5% Mn.
  • the yield strength of the final product strip steel is 1086MPa, the tensile strength is 1343MPa, and the elongation at break is 7%.
  • the main chemical composition (mass%) of the substrate is: 0.08% C-0.012% Si-0.83% Mn.
  • the strip is heated to 500°C by jet radiation, and then heated to 790°C by the radiant tube.
  • the lower jet radiation composite is soaked for 30 seconds, slowly cooled to 700°C, the high hydrogen jet is cooled to about 250°C, and then enters the over-aging section (reheating does not require investment) for over-aging treatment, and finally the jet is cooled to about 140°C and finally water-cooled to room temperature, flattened and then rolled up to complete production.
  • the yield strength of the final product strip is 456MPa, the tensile strength is 539MPa, and the elongation at break is 23%.
  • the main chemical composition (mass%) of the substrate is: 0.065% C-0.012% Si-0.85% Mn.
  • the strip is preheated to 360°C by spray direct fire, then heated to 670°C by direct fire, and then radiated
  • the tube is heated to 800°C, the radiant tube is soaked at 800°C for 60 seconds, slowly cooled to 675°C, mist cooled to 260°C, followed by over-aging treatment (reheating without investment), and finally jet cooled to about 140°C.
  • the water is cooled to room temperature, and then pickled. After pickling, it is flattened and coiled to complete production.
  • the yield strength of the final product strip is 556MPa, the tensile strength is 658MPa, and the elongation at break is 14%.
  • the rapid annealing high-strength strip steel production line of the present invention includes the following stations: Uncoiling-Welding-Inlet Loop-cleaning-central continuous post-processing-smoothing-export loop-coiling;
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, and a rapid cooling section (high hydrogen cooling section, or aerosol cooling section). or water quenching cooling section), reheating section, over-aging section, final jet cooling section, final water cooling section;
  • the jet radiation composite heating section installs the radiant tube inside the high-speed jet heating wind box to quickly transfer the heat generated by the combustion gas of the radiant tube to the strip through both high-speed jet and radiation to achieve rapid heating of the strip;
  • the transverse magnetic induction heating section is used to further rapidly increase the temperature of high-temperature strip steel.
  • the production line simultaneously uses a jet radiation composite heating section + transverse magnetic induction heating section and a high hydrogen cooling section or aerosol cooling section Or a rapid cooling equipment in the water quenching cooling section, which performs rapid heating and rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing high-strength strip steel production line of the present invention includes the following stations: uncoiling - welding - entrance looper - cleaning - central continuous post-processing -Smoothing-export looper-coiling;
  • the central continuous post-processing station consists of a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section (high hydrogen cooling section and aerosol cooling section), and then Heating section, over-aging section, final jet cooling section, final water cooling section;
  • the jet radiation composite heating section installs the radiant tube inside the high-speed and high-temperature jet heating wind box to quickly transfer the heat generated by the combustion gas of the radiant tube to the strip through two methods: high-speed and high-temperature jet and radiation, thereby realizing rapid heating of the strip;
  • the transverse magnetic induction heating section is used to further rapidly increase the temperature of high-temperature strip steel
  • the high hydrogen cooling section and the gas mist cooling section are arranged in parallel.
  • the strip steel can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the gas mist cooling section for aerosol cooling.
  • the production line simultaneously uses a jet radiation composite heating section, a high hydrogen cooling section and a mist cooling section to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high-strength strip steel.
  • the rapid annealing high-strength strip steel production line of the present invention includes the following stations: uncoiling - welding - entrance looper - cleaning - central continuous post-processing -Smoothing-export looper-coiling;
  • the central continuous post-processing station consists of a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section (high hydrogen cooling section and water quenching cooling section), Reheating section, over-aging section, final jet cooling section, final water cooling section;
  • the jet radiation composite heating section installs the radiant tube inside the high-speed jet air box and quickly transfers the heat generated by the combustion gas of the radiant tube to the strip through two methods: high-speed and high-temperature jet and radiation, thereby realizing rapid heating of the strip;
  • the transverse magnetic induction heating section is used to further quickly increase the temperature of the high-temperature strip steel
  • the high hydrogen cooling section and the water quenching cooling section are arranged in parallel.
  • the strip can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the water quenching cooling section for water quenching cooling.
  • the production line simultaneously uses jet radiation composite heating section, high hydrogen cooling section and water quenching cooling section equipment to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high-strength strip steel.
  • the rapid annealing high-strength strip steel production line of the present invention includes the following stations: uncoiling - welding - entrance looper - cleaning - central continuous post-processing -Smoothing-export looper-coiling;
  • the central continuous post-processing station consists of a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section (aerosol cooling section and water quenching cooling section), Reheating section, over-aging section, final jet cooling section, final water cooling section;
  • the jet radiation composite heating section installs the radiant tube inside the high-speed jet air box and quickly transfers the heat generated by the combustion gas of the radiant tube to the strip through two methods: high-speed and high-temperature jet and radiation, thereby realizing rapid heating of the strip;
  • the transverse magnetic induction heating section is used to further rapidly increase the temperature of high-temperature strip steel
  • the aerosol cooling section and the water quenching cooling section are arranged in parallel, and a connecting channel is provided between the aerosol cooling section and the water quenching cooling section; the strip steel can be air mist cooled first and then water quenched, or it can be only air mist cooled or Only water quench cooling.
  • the production line simultaneously uses a jet radiation composite heating section, a transverse magnetic induction heating section, an aerosol cooling section and a water quenching cooling section to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high-strength strip steel.
  • the rapid annealing high-strength strip steel production line of the present invention includes the following stations: uncoiling - welding - entrance looper - cleaning - central continuous post-processing -Smoothing-export looper-coiling;
  • the central continuous post-processing station includes a jet radiation composite heating section, a radiant tube heating section, a transverse magnetic induction heating section, a radiant tube soaking section, a slow cooling section, a rapid cooling section (high hydrogen cooling section and aerosol cooling section and water quenching section). Cooling section), reheating section, over-aging section, final jet cooling section, final water cooling section;
  • the jet radiation composite heating section installs the radiant tube inside the high-speed jet air box and quickly transfers the heat generated by the combustion gas of the radiant tube to the strip through two methods: high-speed and high-temperature jet and radiation, thereby realizing rapid heating of the strip;
  • the transverse magnetic induction heating section is used to further quickly increase the temperature of the high-temperature strip steel
  • the high hydrogen cooling section, the aerosol cooling section, and the water quenching cooling section are arranged in parallel, and a connecting channel is provided between the aerosol cooling section and the water quenching cooling section;
  • the production line simultaneously uses a jet radiation composite heating section, a transverse magnetic induction heating section, a high hydrogen cooling section and (aerosol cooling section + water quenching cooling section) to perform rapid heating and optional rapid cooling to achieve continuous ultra-high strength strip steel Production.
  • the soaking section of the radiant tube is replaced by a jet radiation composite heating device to perform soaking treatment on the strip to achieve rapid adjustment of the soaking temperature of the strip when the strip thickness specifications change, target temperature changes, unit speed changes and other working conditions change.
  • an optional pickling section is provided after the final water cooling section, and the strip can choose to pass through the pickling section or bypass the pickling section.
  • an optional flash plating section is provided after the pickling section. After the strip is pickled, you can choose to perform flash nickel plating or flash zinc plating, or you can skip the flash plating section and directly produce pickled surface products.
  • the cleaning station is arranged between the welding station and the inlet looper station. Further preferably, the cleaning station is located between the inlet looper station and the inlet looper station. Cleaning stations are set up before and after the work station. The strip is cleaned for the first time, enters the looper, then cleaned for the second time, and then enters the central continuous post-processing station.
  • a finishing station is set up before the coiling station to finish the strip before coiling it.
  • an intermediate looper station is set up before the leveling station. After central continuous post-processing of the strip, it enters the central looper and then enters leveling. This allows the central continuous post-processing to be performed without slowing down the speed of the leveling machine to replace the work roll.
  • a tensioning and straightening station is also provided between the leveling station and the outlet looper station, and the strip can optionally undergo tensioning and straightening treatment before entering the outlet looper.
  • a surface post-processing station such as passivation or fingerprint resistance is also provided between the flattening station and the outlet looper station.
  • the strip steel can choose to undergo surface post-processing such as passivation or fingerprint resistance before entering the outlet looper.
  • a tension and straightening station and a surface post-treatment station such as passivation or fingerprint resistance are also provided between the flattening station and the exit looper station.
  • the strip steel can be optionally subjected to tension and straightening or/and passivation or fingerprint resistance. Wait for surface post-processing before entering the outlet looper.
  • a high-strength steel is produced using the production line described in Example 1.
  • the main chemical composition (mass%) of the substrate is 0.10% C-0.18% Si-1.96% Mn strip steel, which is uncoiled, welded, passed through the entrance looper, and cleaned.
  • the jet radiation composite heating is to 600°C, then the radiant tube is heated to 810°C, and then the transverse magnetic induction is heated to 920°C.
  • the radiant tube is soaked at 920°C for 40 seconds, slowly cooled to 670°C, and the high hydrogen jet is cooled to 250°C. or so, and then enters the over-aging section (reheating without investment) for over-aging treatment.
  • the outlet loop is passed and coiled to complete production.
  • the yield strength of the final product strip is 519MPa
  • the tensile strength is 955MPa
  • the elongation at break is 20%.
  • a pickling section is set up after the final water cooling section to produce a high-strength steel.
  • the main chemical composition (mass%) of the substrate is 0.06% C-0.010% Si-0.90%
  • the jet radiation is heated to 500°C, then the radiant tube is heated to 710°C, and then the transverse magnetic induction is heated to 810°C.
  • the radiant tube is soaked at 810°C for 60 seconds.
  • a pickling section and a flash plating section are set up after the final water cooling section to produce an ultra-high-strength steel.
  • the main chemical composition (mass%) of the substrate is 0.11% C-0.23
  • the jet radiation composite heating is performed to 565°C
  • the radiant tube is heated to 730°C
  • the transverse magnetic induction heating is performed to 830°C, and then radiated at 830°C.
  • the tube is soaked for 60 seconds, slowly cooled to 700°C, then quenched with water to cool to about 50°C, then heated to 230°C to enter the over-aging section for over-aging treatment, and finally air-jet cooled to about 140°C and finally water-cooled to room temperature, and then Pickling, then flash nickel plating, and finally smoothing, the outlet looper is passed and coiled to complete production.
  • the yield strength of the final product strip steel is 1093MPa, the tensile strength is 1359MPa, and the elongation at break is 5%.
  • the rapid annealing ultra-high strength strip production line includes the following stations in order: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - leveling - exit looper - coiling ;in,
  • the central continuous post-processing station includes a spray direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a transverse magnetic induction heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, and an over-aging section. section, final jet cooling section, final water cooling section;
  • the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section
  • the rapid cooling section adopts a high hydrogen cooling section
  • a jet direct fire preheating section In this production line, a jet direct fire preheating section, a transverse magnetic induction heating section and a high hydrogen cooling section are used to perform rapid heating and rapid cooling processes to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing ultra-high strength strip production line includes the following stations in order: uncoiling-welding-entrance looper-cleaning-central continuous post-processing - Leveling - Exit looper - Coiling; where,
  • the central continuous post-processing station sequentially includes a jet direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, and a final jet cooling section. section, final water cooling section;
  • the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section
  • the rapid cooling section adopts an aerosol cooling section.
  • the rapid annealing ultra-high-strength strip steel production line includes the following stations in order: uncoiling - welding - entrance looper - cleaning - central continuous post-processing - Leveling - Exit looper - Coiling; where,
  • the central continuous post-processing station sequentially includes a jet direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, and a final jet cooling section. section, final water cooling section;
  • the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section
  • the rapid cooling section adopts water quenching cooling section.
  • the rapid annealing ultra-high strength strip production line includes the following stations in order: uncoiling-welding-entrance looper-cleaning-central continuous post-processing - Leveling - Exit looper - Coiling; where,
  • the central continuous post-processing station sequentially includes a jet direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, and a final jet cooling section. section, final water cooling section;
  • the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section
  • the rapid cooling section adopts a high hydrogen cooling section and an aerosol cooling section arranged in parallel.
  • the strip steel can choose to go to the high hydrogen cooling section for high hydrogen cooling, or it can choose to go to the aerosol cooling section for aerosol cooling.
  • the spray direct fire preheating section, high hydrogen cooling section and mist cooling section can be used at the same time to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.
  • the rapid annealing ultra-high-strength strip steel production line of the present invention includes the following stations in order: Uncoiling-Welding-Inlet Loop-Cleaning-Central Continuous Post-processing-smoothing-export looper-coiling; among which,
  • the central continuous post-processing station sequentially includes a jet direct-fire preheating section, a direct-fire heating section, a radiant tube heating section, a soaking section, a slow cooling section, a rapid cooling section, a reheating section, an over-aging section, and a final jet cooling section. section, final water cooling section;
  • the soaking section adopts a radiant tube soaking section or a jet radiation composite soaking section
  • the rapid cooling section adopts a high hydrogen cooling section and a water quenching cooling section arranged in parallel.
  • the strip steel can choose to go through the high hydrogen cooling section for high hydrogen cooling, or it can choose to go through the water quenching cooling section for water quenching cooling.
  • a jet direct fire preheating section In this production line, a jet direct fire preheating section, a high hydrogen cooling section and a water quenching cooling section are simultaneously used to perform rapid heating and optional rapid cooling to achieve continuous production of ultra-high strength strip steel.

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Abstract

提供了快速热镀锌带钢生产线、快速退火带钢生产线、超短流程超高强带钢生产线、柔性化的适合多种高强带钢的生产线以及连退或热镀锌双用高强带钢生产线。这些生产线中使用到本发明的喷射直火预热装置、喷射辐射管预热装置和/或喷气辐射复合加热/均热装置，能实现快速加热。

Description

快速热处理带钢生产线 技术领域
本发明涉及快速热处理带钢生产线。
背景技术
带钢处理线中，一种常见的方式是采用直火加热，且优选采用清洁的天然气进行直火加热，防止不清洁的燃烧废气污染带钢表面，并利用直火燃烧废气直接预热带钢，另一种常见方式是使用辐射管加热，用辐射管燃烧废气预热带钢。所述现有技术存在如下不足：
如果采用直火加热，预热带钢后的直火燃烧废气排放温度仍然比较高，通常会超过800℃，有时会超过850℃，超过850℃时通常需要掺入冷风将废气排放温度控制在850℃及以下才能进行二次离线利用。废气温度越高，意味着热能损失越多。可以看出，这种方法，热能一次在线利用率低，而且二次离线利用产生的蒸汽或热水在本机组往往不能全部消耗掉，因此将带来该区域能源平衡的困难；由于直火燃烧废气直接接触带钢而且接触时间较长，另外在预热段需将直火燃烧废气中的过量燃气进行二次燃烧，二次燃烧火焰往往是氧化性火焰，这必然限制带钢预热温度的提高，否则，容易在带钢表面形成过厚的氧化层，特别是对于高强钢和超高强钢，由于基板中添加了Si、Mn等强化合金元素，相比普通强度产品，带钢表面更容易出现合金强化元素的富集，引起表面质量问题，因此通常带钢的预热温度只能预热到250℃左右，预热效果较差。如果采用辐射管加热，预热带钢后的燃烧废气排放温度仍然比较高，生产高温退火料时通常会超过350℃，需增加锅炉或过热水加热装置进行燃烧废气余热的二次利用，经济效率明显降低，而且设备占地面积大。另外，能源直接利用到带钢上的比例低，即仍然由预热带钢后的废气带走了大量的热量(预热带钢后的废气温度越高，带走的热量越多)，燃烧的热量没有充分传输到带钢上(即能源的一次利用率低)。还有，就是预热带钢温度受限，通常预热后的带钢很难超过250℃。
发明内容
本发明的目的是利用新型直火预热设备、新型辐射管预热设备和/或喷气辐射复合加热设备配置出一系列产线，实现快速热处理等。
快速热镀锌带钢生产线
本发明的目的在于提供一种快速热镀锌带钢生产线，可以实现以下目的：采用直火加热时，做到直火燃烧废气余热的充分利用，可以将带钢温度快速预热到至少350℃以上，并避免直火燃烧废气在预热炉内长时间直接接触带钢，从而避免带钢表面生成过厚的氧化层；不采用直火加热时，采用新型的加热技术，将燃烧废气余热的充分利用，并将燃烧废气余热基本都传输到了带钢上，提高热能一次利用率，使得燃烧废气充分加热带钢后可直接排放，无需增加锅炉或过热水加热装置进行二次利用，显著降低投资、减少占地面积。
为达到上述目的，本发明的技术方案是：
一种快速热镀锌带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；
所述预热段采用喷射直火预热装置或喷气辐射复合加热装置；
所述加热段采用直火加热段和/或辐射管加热段；
所述均热段采用辐射管均热段或喷气辐射复合均热段；
所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
所述喷射直火预热装置利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述喷气辐射复合加热段和均热段除了利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
优选的，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段；使热镀锌为合金化热镀锌。
优选的，所述中央连续后处理工位的气刀后设置可在线/离线切换的移动镀后快冷段，且，该移动镀后快冷段与合金化加热段并列布置。
优选的，在入***套工位之前设置清洗工位。
优选的，入***套工位的前、后分别设置清洗工位。
优选的，平整工位前、中央连续后处理工位之后设置中央活套。
优选的，在卷取工位与出***套工位之间设置精整工位，带钢精整后再进行卷取。
优选的，在平整工位与出***套工位之间设置拉矫工位，带钢可以选择进行拉矫处理再进入出***套。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，带钢 可以选择进行钝化或耐指纹等表面处理再进入出***套。
优选的，在平整工位与出***套工位之间还同时设置拉矫工位和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面处理再进入出***套。
对于生产热镀纯锌产品的热镀纯锌机组，采用直火加热时，本发明设计的快速热镀锌带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，所述的中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述再加热段和二次再加热段都使用纵磁感应加热设备对带钢进行快速加热。
不采用直火加热时，本发明设计的快速热镀锌带钢生产线包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述喷气辐射复合加热段和均热段除了利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述再加热段和二次再加热段都使用纵磁感应加热设备对带钢进行快速加热。
在本发明所述生产线的设计中：
对于生产合金化热镀锌产品的合金化热镀锌机组，使用直火加热时，本发明设计的快速合金化热镀锌带钢生产线包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段都使用纵磁感应加热设备对带钢进行快速加热。
不使用直火加热时，本发明设计的快速合金化热镀锌带钢生产线包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷气辐射复合加热段和均热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段都使用纵磁感应加热设备对带钢进行快速加热。
所述均热段采用喷气辐射复合加热设备，实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
优选地，热镀纯锌带钢生产线中的中央连续后处理工位的热镀纯锌工位，在气刀段后、镀后冷却段前设置可选择的移动镀后快冷段，带钢从锌锅段热镀锌经气刀段设备控制镀层重量以后可以选择使用移动镀后快冷段进行镀后快冷，也可以不选择使用移动镀后快冷段进行自然冷却后再进行镀后冷却，实现热镀锌高强带钢的连续生产。
而合金化热镀锌带钢生产线，在中央连续后处理工位的气刀段后，与合金化加热段并列设置可选择的移动镀后快冷段，带钢从锌锅段热镀锌经气刀段控制镀层重量以后如果生产热镀纯锌产品，该移动镀后快冷段切换在线使用，将合金化加热段离线；如果生产合金化热镀锌产品，该移动镀后快冷段切换离线，将合金化加热段设备切换在线使用。
本发明所述生产线与传统连续热处理线不同点或创新点在于：
1、本发明使用直火加热时，使用喷射直火预热段代替普通预热段，其区别于普通预热段的显著特征在于：
①采用炉内热交换器(热交换器不是布置在炉外)加热循环利用的氮氢保护气体，利用加热的氮氢保护气体高速喷射到带钢上下表面强制对流换热实现快速高效预热带钢，此方法与传统的预热方法相比，炉壳及保护气体通道的热量损失显著减少，燃烧废气余热利用更充分、加热效率更高、加热速率更快；
②在喷射直火喷射预热段内，加热段燃烧废气从预热段的换热器室通过，在通过过程中加热段燃烧废气与换热器室内的热交换器进行充分的换热，加热氮氢保护气体，因此在喷射直火喷射预热段内加热段燃烧废气不是一直与带钢直接接触(当加热段采用直火加热时，喷射直火喷射预热段仅在高温段短时直接接触而且此时废气属于还原性气氛或微氧化气氛)，从而可以避免带钢表面过氧化；
③当加热段采用直火加热时，直火燃烧废气中的未充分燃烧的燃气在喷气预热段顶部的半密封单元内进行富氧二次燃烧，但燃烧的火焰不接触带钢，因此有效避免了带钢表面过氧化；
④带钢预热温度更高，当加热段采用直火加热时，由于高温氮氢保护气体喷射直火喷射预热换热系数高，预热后的带钢温度至少可以达到350℃及以上，比普通预热段带钢温度至少高出100℃；
⑤当加热段采用直火加热时，本发明所述喷射辐射管预热段出来的直火燃烧废气温度通常远低于750℃(如果高速喷射预热单元布置数量足够多的话甚至可以达到200℃以下直接排放)，无需掺冷空气进行炉外二次利用或根本无需二次利用。
2、不使用直火加热时，使用喷气辐射复合加热段设备对带钢进行快速加热，该加热设备除了利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热，换热效率高，废气温度可以直接利用后低于250℃排放，将燃烧热量基本全部传输利用的带钢的加热上。
使用直火加热设备的使用，可以对高强钢使用预氧化还原处理，提高高强钢的可镀性；
通过直火加热设备或喷气辐射复合加热设备与高氢快冷设备的配合使用，实现了高强钢的快速加热、快速冷却退火处理，可以提高高强钢的强度；
本发明设置了二次再加热段设备，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
本发明中合金化热镀锌高强钢生产线，可以同时生产热镀纯锌和合金化热镀锌两种镀层种类的热镀锌产品。
本发明的有益效果在于：
1)预热后带钢温度高，热能一次利用率高；
2)采用直火加热技术方案时带钢的可镀性好；
3)采用二次再加热设备，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
4)实现带钢的快速加热、快速冷却处理，可生产强度级别高的带钢产品；
5)采用喷气辐射复合均热时，带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度可以实现快速调节，可以减少因带钢温度不符造成的质量损失。
快速热镀锌高强带钢生产线
本发明还提供一种快速热镀锌高强带钢生产线，可以实现以下目的：1)改进预热：采用新型的加热技术，将燃烧废气余热的充分利用，并将燃烧废气余热基本都传输到了带钢上，提高热能一次利用率，使得燃烧废气充分加热带钢后可直接排放，或者充分利用辐射 管加热段或和辐射管均热段的余热充分预热带钢，无需增加锅炉或过热水加热装置进行二次利用，显著降低投资、减少占地面积。2)改进均热，实现带钢均热温度的快速调节；3)改进超高温加热：利用横磁感应加热技术，用于高温带钢加热温度的进一步快速提升，实现高强带钢的超高温退火，并提高能源利用率。
为达到上述目的，本发明的技术方案是：
一种快速热镀纯锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。所述的喷气辐射复合加热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体或者全氢气体，再由氮氢保护气体或者全氢气体喷射到带钢上下表面实现强制对流换热。所述再加热段和二次再加热段均采用纵磁感应加热对带钢进行快速加热。
又，本发明所述的快速热镀纯锌高强带钢生产线依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。所述喷射辐射管预热段利用辐射管加热段和辐射管均热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
再有，本发明所述的快速热镀纯锌带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；所述的喷气辐射复合加热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体或者全氢气体，再由氮氢保护气体或者全氢气体喷射到带钢上下表面实现强制对流换热；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
还有，本发明所述的快速热镀纯锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅 段、气刀段、镀后冷却段和最终水冷段；所述喷射辐射管预热段利用辐射管加热段和辐射管均热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
进一步，在气刀段与镀后冷却段之间设置合金化加热段、合金化均热段；使热镀锌为合金化热镀锌。
更进一步，所述的气刀段后、镀后冷却段前设置可选择的移动镀后快冷段。
又，所述气刀段后设置可选择的移动镀后快冷段，且，该移动镀后快冷段与合金化加热段并列布置。
优选的，在入***套工位之前设置清洗工位。
优选的，在入***套工位的前后均设置清洗工位。
优选的，在平整工位前、中央连续后处理工位之后设置中央活套。
优选的，在卷取工位与出***套工位之间设置精整工位，带钢精整后再进行卷取。
优选的，在平整工位与出***套工位之间设置拉矫工位，带钢可以选择进行拉矫处理再进入出***套。
优选的，在平整工位与出***套工位之间还设置钝化或耐指纹等表面后处理工位，带钢可以选择进行钝化或耐指纹等表面处理再进入出***套。
优选的，在平整工位与出***套工位之间同时设置拉矫工位和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面处理再进入出***套。
本发明所述生产线与传统连续热处理线不同点或创新点在于：
1)本发明使用喷气辐射复合加热段设备对带钢进行快速加热，该加热设备除了利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热，换热效率高，废气温度可以直接利用后低于250℃排放，将燃烧热量基本全部传输利用的带钢的加热上。
2)本发明使用辐射管加热段或和辐射管均热段燃烧废气的喷射辐射管预热段设备时，辐射管加热和均热的余热可以实现在线全部利用，可以将带钢温度预热到至少250℃以上。
本发明通过喷射辐射管预热装置或喷气辐射复合加热装置+横磁感应加热设备与高氢快冷设备的配合使用，实现了高强钢的快速加热、快速冷却退火处理，可以提高高强钢的强度；
3)本发明将横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
4)本发明设置二次再加热段设备，实现了热镀锌处理前带钢温度的两次抬升，可以实 现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
5)本发明所述热镀锌高强钢生产线可以同时生产热镀纯锌和合金化热镀锌两种镀层种类的热镀锌产品。
本发明的有益效果在于：
1)预热后带钢温度高，热能一次利用率高；
2)采用横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
3)采用二次再加热设备，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
4)实现带钢的快速加热、快速冷却处理，可生产强度级别高的带钢产品；
5)采用喷气辐射复合均热时，带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度可以实现快速调节，可以减少因带钢温度不符造成的质量损失。
快速热镀锌超高强带钢生产线
本发明的快速热镀锌超高强带钢生产线可以在低成本下实现高强带钢的超高温退火，并达到以下目的：1)改进预热：采用直火加热，并将直火燃烧废气余热的充分利用，可以将带钢温度快速预热到至少350℃以上，并避免直火燃烧废气在预热炉内长时间直接接触带钢，从而避免带钢表面生成过厚的氧化层。2)改进均热，实现带钢均热温度的快速调节；3)改进超高温加热：利用横磁感应加热技术，用于高温带钢加热温度的进一步快速提升。
为达到上述目的，本发明的技术方案是：
一种快速热镀锌超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述该中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
又，本发明还设计一种快速热镀锌超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、均 热段、缓冷段、快速冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段采用气雾冷却段和/或水淬冷却段；所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
进一步，热镀锌采用合金化热镀锌，即在气刀段与镀后冷却段之间设置合金化加热段、合金化均热段。
优选的，在酸洗段之后增加闪镀铁或闪镀镍段，对带钢进行闪镀后再进行后续处理。优选的，气刀段后、镀后冷却段设备前设置可选择的移动镀后快冷段设备，带钢从锌锅段热镀锌经气刀段控制镀层重量以后可以选择使用移动镀后快冷段进行镀后快冷，也可以不选择使用移动镀后快冷段进行自然冷却后再进行镀后冷却，实现热镀锌带钢的连续生产。
优选的，气刀段后，与合金化加热段并列设置可选择的移动镀后快冷段，带钢从锌锅段热镀锌经气刀段设备控制镀层重量以后如果生产热镀纯锌产品，该移动镀后快冷段切换到在线使用，将合金化加热段设备离线；如果生产合金化热镀锌产品，该移动镀后快冷段设备切换离线，将合金化加热段设备切换到在线使用。
优选的，所述辐射管均热段更换为喷气辐射复合均热段，实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
优选的，在入***套工位之前和之后均设置清洗工位。
优选的，在平整工位前设置中央活套工位。
优选的，在卷取工位与出***套工位之间设置精整工位，带钢精整后再进行卷取。
优选的，在平整工位与出***套工位之间还设置拉矫工位，带钢可以选择进行拉矫处理再进入出***套。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，带钢可以选择进行钝化或耐指纹等表面处理再进入出***套。
优选的，在平整工位与出***套工位之间设置拉矫工位设备和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面处理再进入出***套。
本发明所述快速热镀锌超高强钢生产线，快速冷却段采用高氢冷却段与气雾冷却段+酸洗段并联，或者采用高氢冷却段与水淬冷却段+酸洗段并联，带钢可以选择使用高氢冷却，也可以选择使用气雾冷却或水淬冷却。
所述热镀纯锌和合金化热镀锌超高强钢生产线，快速冷却段采用气雾冷却段与水淬冷却段串联，并在水淬冷却段之后设置酸洗段，带钢可以选择只进行气雾冷却，也可以选择 只进行水淬冷却，也可以选择先气雾冷却，再水淬冷却。
所述热镀纯锌或合金化热镀锌超高强钢生产线，快速冷却段采用高氢冷却段与串联的(气雾冷却段+水淬冷却段+酸洗段)并联，带钢可以选择高氢冷却，也可以选择气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却再水淬冷却。
热镀纯锌带钢生产线中，中央连续后处理工位的热镀纯锌工位，在气刀段后、镀后冷却段前设置可选择的移动镀后快冷段，带钢从锌锅段热镀锌经气刀段控制镀层重量以后可以选择使用移动镀后快冷段进行镀后快冷，也可以不选择使用移动镀后快冷段进行自然冷却后再进行镀后冷却，实现热镀锌高强带钢的连续生产。
而合金化热镀锌带钢生产线，在中央连续后处理工位的气刀段设备后，与合金化加热段并列设置可选择的移动镀后快冷段，带钢从锌锅段热镀锌经气刀段控制镀层重量以后如果生产热镀纯锌产品，该移动镀后快冷段切换在线使用，将合金化加热段离线；如果生产合金化热镀锌产品，该移动镀后快冷段切换离线，将合金化加热段切换在线使用。
优选的，在焊接工位与入***套工位之间设置可选择的清洗工位设备，带钢可以选择经过清洗工位进行清洗，也可以旁通跳过清洗工位；进一步优选，在入***套工位的前、后均设置清洗工位。
本发明与传统连续热处理线的不同点或创新点在于：
1)使用直火加热时，使用喷射直火预热段代替普通预热段，其区别于普通预热段的显著特征在于：
①采用炉内热交换器(热交换器不是布置在炉外)加热循环利用的氮氢保护气体，利用加热的氮氢保护气体高速喷射到带钢上下表面强制对流换热实现快速高效预热带钢，此方法与传统的预热方法相比，炉壳及保护气体通道的热量损失显著减少，燃烧废气余热利用更充分、加热效率更高、加热速率更快；
②在喷射直火预热段内，加热段燃烧废气从预热段的换热器室通过，在通过过程中加热段燃烧废气与换热器室内的热交换器进行充分的换热，加热氮氢保护气体，因此在喷射直火预热段内加热段燃烧废气不是一直与带钢直接接触(当加热段采用直火加热时，喷射直火预热段仅在高温段短时直接接触而且此时废气属于还原性气氛或微氧化气氛)，从而可以避免带钢表面过氧化；
③当加热段采用直火加热时，直火燃烧废气中的未充分燃烧的燃气在喷气预热段顶部的半密封单元内进行富氧二次燃烧，但燃烧的火焰不接触带钢，因此有效避免了带钢表面过氧化；
④带钢预热温度更高，当加热段采用直火加热时，由于高温氮氢保护气体喷射直火预热换热系数高，预热后的带钢温度至少可以达到350℃及以上，比普通预热段带钢温度至少 高出100℃；
⑤当加热段采用直火加热时，本发明所述喷射直火预热段出来的直火燃烧废气温度通常远低于750℃(如果高速喷射预热单元布置数量足够多的话甚至可以达到200℃以下直接排放)，无需掺冷空气进行炉外二次利用或根本无需二次利用。
2)本发明设计喷射直火预热装置。
3)使用直火加热设备，可以对高强钢使用预氧化还原处理，提高高强钢的可镀性；
4)通过直火加热设备或喷气辐射复合加热设备+横磁感应加热与高氢快冷设备的配合使用，实现了高强钢的快速加热、快速冷却退火处理，可以提高高强钢的强度；
5)横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
6)本发明设置了二次再加热段设备，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
7)本发明所述热镀锌高强钢生产线可以同时生产热镀纯锌和合金化热镀锌两种镀层种类的热镀锌产品。
本发明的有益效果在于：
1)实现带钢的快速加热、快速冷却处理，可生产强度级别高的带钢产品；
2)采用横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
3)采用喷气辐射复合均热时，带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度可以实现快速调节，可以减少因带钢温度不符造成的质量损失；
4)采用直火加热可以应用预氧化还原工艺，超高强带钢的可镀性好；
5)采用二次再加热设备，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
6)预热后带钢温度高，热能一次利用率高。
快速连退带钢生产线
本发明的快速连退带钢生产线可以实现以下目的：采用直火加热时，做到直火燃烧废气余热的充分利用，可以将带钢温度快速预热到至少350℃以上，并避免直火燃烧废气在预热炉内长时间直接接触带钢，从而避免带钢表面生成过厚的氧化层；不采用直火加热时，采用新型的加热技术，将燃烧废气余热的充分利用，并将燃烧废气余热基本都传输到了带钢上，提高热能一次利用率，使得燃烧废气充分加热带钢后可直接排放，无需增加锅炉或过热水加热装置进行二次利用，显著降低投资、减少占地面积；另外，实现超高强钢的快 速加热、快速冷却处理，缩短带钢的热处理周期时间；快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力。
为达到上述目的，本发明的技术方案是：
一种快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述预热段采用喷射直火预热装置或喷气辐射复合加热装置；所述加热段采用直火加热段和/或辐射管加热段；所述均热段采用辐射管均热或喷气辐射复合加热装置均热；所述快速冷却段采用高氢冷却、或气雾冷却或水淬冷却。
本发明还设计一种快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述预热段采用喷射直火预热装置或喷气辐射复合加热装置；所述加热段采用直火加热段和/或辐射管加热段；所述快速冷却段采用高氢冷却与气雾冷却或水淬冷却并联布置，或，气雾冷却与水淬冷却并联布置且气雾冷却与水淬冷却之间设连接通道，或，高氢冷却与气雾冷却、水淬冷却并联布置且气雾冷却与水淬冷却之间设连接通道。
进一步，在最终水冷段后设置可选择的酸洗段，当带钢经过酸洗段设备时可用于带钢的酸洗，当不需对带钢进行酸洗时，带钢可旁通不经过酸洗段设备。
更进一步，在酸洗段之后还设置可选择的闪镀段。酸洗后的带钢可以选择进入闪镀段，生产闪镀镍或闪镀锌等闪镀产品，当不需对带钢进行闪镀时，带钢可以旁通不经过闪镀段。
优选的，在焊接工位与入***套工位之间设置清洗工位，带钢可以选择经过清洗工位设备进行清洗，也可以旁通跳过清洗工位；优选地，在入***套工位的前、后均设置清洗工位，带钢先进行第一次清洗，进入活套，然后进行第二次清洗，再进入中央连续后处理工位。
优选的，在卷取工位前设置精整工位，带钢进行精整再卷取。
优选的，在平整工位之前设置中间活套工位。
优选的，在平整工位与出***套工位之间设置拉矫工位。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，带钢可以选择进行钝化或耐指纹等表面处理再进入出***套；或，在平整工位与出***套工位之间同时设置拉矫工位设备和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/ 和钝化或耐指纹等表面处理再进入出***套。
本发明可以将辐射管均热段改为喷气辐射复合加热装置均热，实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
本发明所述生产线与传统连续热处理线不同点或创新点在于：
使用直火加热时，使用喷射直火预热段代替普通预热段，其区别于普通预热段的显著特征在于：
①采用炉内热交换器(热交换器不是布置在炉外)加热循环利用的氮氢保护气体，利用加热的氮氢保护气体高速喷射到带钢上下表面强制对流换热实现快速高效预热带钢，此方法与传统的预热方法相比，炉壳及保护气体通道的热量损失显著减少，燃烧废气余热利用更充分、加热效率更高、加热速率更快；
②在喷射直火预热段内，加热段燃烧废气从预热段的换热器室通过，在通过过程中加热段燃烧废气与换热器室内的热交换器进行充分的换热，加热氮氢保护气体，因此在喷射直火预热段内加热段燃烧废气不是一直与带钢直接接触(当加热段采用直火加热时，喷射直火预热段仅在高温段短时直接接触而且此时废气属于还原性气氛或微氧化气氛)，从而可以避免带钢表面过氧化；
③当加热段采用直火加热时，直火燃烧废气中的未充分燃烧的燃气在喷气预热段顶部的半密封单元内进行富氧二次燃烧，但燃烧的火焰不接触带钢，因此有效避免了带钢表面过氧化；
④带钢预热温度更高，当加热段采用直火加热时，由于高温氮氢保护气体喷射直火预热换热系数高，预热后的带钢温度至少可以达到350℃及以上，比普通预热段带钢温度至少高出100℃；
⑤当加热段采用直火加热时，本发明所述喷射直火预热段出来的直火燃烧废气温度通常远低于750℃(如果高速喷射预热单元布置数量足够多的话甚至可以达到200℃以下直接排放)，无需掺冷空气进行炉外二次利用或根本无需二次利用。
不使用直火加热时，使用喷气辐射复合加热段设备对带钢进行快速加热，该加热设备除了利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热，换热效率高，废气温度可以直接利用后低于250℃排放，将燃烧热量基本全部传输利用的带钢的加热上。
通过直火加热设备或喷气辐射复合加热设备与高氢快冷设备的配合使用，实现了高强钢的快速加热、快速冷却退火处理，可以提高高强钢的强度；
本发明所述技术方案可以实现冷轧退火、酸洗和闪镀三种不同表面状态的超高强钢连续生产。
本发明的有益效果在于：
1)预热后带钢温度高，热能一次利用率高；
2)实现带钢的快速加热、快速冷却处理，可生产强度级别高的带钢产品；
3)采用喷气辐射复合加热装置均热时，带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度可以实现快速调节，可以减少因带钢温度不符造成的质量损失；
4)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度，相应780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；
5)实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间。
快速连退高强带钢生产线
本发明的一种快速连退高强带钢生产线采用喷气辐射复合加热和横磁感应加热实现带钢快速加热，采用高氢冷却段或气雾冷却段或水淬冷却段实现带钢快速冷却，缩短带钢的热处理周期时间；这种快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)；同时，将带钢温度快速加热到900℃以上，实现高强钢的超高温退火处理。
为达到上述目的，本发明的技术方案是：
一种快速退火高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述喷气辐射复合加热段将辐射管安装到高速喷气风箱内部把辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；所述快速冷却段包括高氢冷却段或气雾冷却段或水淬冷却段；所述均热段采用辐射管加热装置或喷气辐射复合加热装置。
又，本发明还提供一种快速退火高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述喷气辐射复合加 热段将辐射管安装到高速喷气风箱内部把辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；所述快速冷却段包括高氢冷却段、气雾冷却段或水淬冷却段；所述高氢冷却段和气雾冷却段并联布置，或，所述高氢冷却段和水淬冷却段并联布置；所述均热段采用辐射管加热装置或喷气辐射复合加热装置。
本生产线同时采用喷气辐射复合加热装置+横磁感应加热段和高氢冷却段或气雾冷却段或水淬冷却段中的一种快速冷却方式，进行快速加热、快速冷却处理，实现超高强带钢的连续生产。
再有，本发明所述的快速退火高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述喷气辐射复合加热段将辐射管安装到高速喷气风箱内部把辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；所述快速冷却段包括气雾冷却段和水淬冷却段，该气雾冷却段和水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道；形成带钢可先气雾冷却后水淬冷却，或仅气雾冷却、或仅水淬冷却的三种冷却模式；所述均热段采用辐射管加热装置或喷气辐射复合加热装置；所述横磁感应加热段用于高温带钢的温度进一步快速提升。
进一步，所述快速冷却段还包括高氢冷却段，该高氢冷却段与气雾冷却段并联布置；所述高氢冷却段与串联布置的气雾冷却段+水淬冷却段并联布置，形成带钢或仅选择高氢冷却段的第四种冷却模式。
优选的，在最终水冷段后设置可选择的酸洗段。
优选的，在酸洗段之后设置可选择的闪镀段。
优选的，在焊接工位与入***套工位之间设置清洗工位，优选的，在入***套工位的前后均设置清洗工位。
优选的，在卷取工位前设置精整工位。
优选的，在平整工位之前设置中间活套工位。
优选的，在平整工位与出***套工位之间设置拉矫工位。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位。
优选的，在平整工位与出***套工位之间同时设置拉矫工位和钝化或耐指纹等表面后处理工位。
本生产线同时采用喷气辐射复合加热装置、横磁感应加热段和高氢冷却段或气雾冷却段设备或水淬冷却段设备中的一种快速冷却设备，进行快速加热、快速冷却处理，实现超 高强带钢的连续生产。
本发明所述生产线与传统连续热处理线的不同点或创新点在于：
本发明使用喷气辐射复合加热装置对带钢进行快速加热，该加热设备除了利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体或者全氢气体(氢气浓度100％)，再由氮氢保护气体或者全氢气体喷射到带钢上下表面实现强制对流换热，换热效率高，废气温度可以直接利用后低于250℃排放，将燃烧热量基本全部传输利用的带钢的加热上。
通过横磁感应加热设备布置在辐射管加热段之后，可以将高温带钢的温度进一步快速提升，可以将带钢加热到900℃以上进行退火处理。
本发明通过喷气辐射复合加热设备+横磁感应加热设备与高氢快冷设备的配合使用，实现了高强钢的快速加热、快速冷却退火处理，可以提高高强钢的强度。
本发明可以实现冷轧退火、酸洗和闪镀三种不同表面状态的超高强钢连续生产。
本发明的有益效果在于：
1)本发明实现带钢的快速加热、快速冷却处理，可生产强度级别高的高强带钢产品；
2)本发明可以实现900℃以上超高温退火；
3)本发明采用喷气辐射复合均热时，带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度可以实现快速调节，可以减少因带钢温度不符造成的质量损失；
4)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度，相应780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；
5)本发明实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间。
快速退火超高强带钢生产线
本发明的快速退火超高强带钢生产线可以实现以下目的：采用直火加热时，做到直火燃烧废气余热的充分利用，可以将带钢温度快速预热到至少350℃以上，并避免直火燃烧废气在预热炉内长时间直接接触带钢，从而避免带钢表面生成过厚的氧化层；将燃烧废气余热基本都传输到了带钢上，提高热能一次利用率，使得燃烧废气充分加热带钢后可直接排放，无需增加锅炉或过热水加热装置进行二次利用，显著降低投资、减少占地面积。改进均热，实现带钢均热温度的快速调节。改进超高温加热：利用横磁感应加热技术，用于高 温带钢加热温度的进一步快速提升，实现高强带钢的超高温退火，并提高能源利用率。另外，实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力。
为达到上述目的，本发明的技术方案是：
一种快速退火超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段采用高氢冷却段或气雾冷却段或水淬冷却段；或，高氢冷却段与气雾冷却段或水淬冷却段并联布置；或，气雾冷却段与水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道；或，高氢冷却段、气雾冷却段、水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道，高氢冷却段连接所述再加热段。
优选的，最终水冷段后设置可选择的酸洗段，带钢可以选择经过酸洗段，也可以旁通跳过酸洗段。
优选的，酸洗段后还设置可选择的闪镀段，带钢酸洗后可以选择进行闪镀镍或闪镀锌，也可以跳过闪镀段，直接产出酸洗表面产品。
优选的，在焊接工位与入***套工位之间设置清洗工位，优选，在入***套工位前后均设置清洗工位；带钢先进行第一次清洗，进入活套，然后进行第二次清洗，再进入中央连续后处理工位。
优选的，在卷取工位前设置精整工位，对带钢进行精整后再卷取。
优选的，在平整工位之前设置中间活套工位，带钢中央连续后处理后进入中央活套，然后再进入平整，可以实现中央连续后处理不降速实现平整机更换工作辊。
优选的，在平整工位与出***套工位之间设置拉矫工位，带钢可以选择进行拉矫处理再进入出***套。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，带钢可以选择进行钝化或耐指纹等表面处理再进入出***套。
优选的，在平整工位与出***套工位之间设置拉矫工位和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面后处理再进入出***套。
本发明所述生产线与传统连续热处理线的不同点或创新点在于：
1)使用直火加热时，使用喷射直火预热段代替普通预热段，其区别于普通预热段的显著特征在于：
①采用炉内热交换器(热交换器不是布置在炉外)加热循环利用的氮氢保护气体，利用加热的氮氢保护气体高速喷射到带钢上下表面强制对流换热实现快速高效预热带钢，此方法与传统的预热方法相比，炉壳及保护气体通道的热量损失显著减少，燃烧废气余热利用更充分、加热效率更高、加热速率更快；
②在喷射直火预热段内，加热段燃烧废气从预热段的换热器室通过，在通过过程中加热段燃烧废气与换热器室内的热交换器进行充分的换热，加热氮氢保护气体，因此在喷射直火预热段内加热段燃烧废气不是一直与带钢直接接触(当加热段采用直火加热时，喷射直火预热段仅在高温段短时直接接触而且此时废气属于还原性气氛或微氧化气氛)，从而可以避免带钢表面过氧化；
③当加热段采用直火加热时，直火燃烧废气中的未充分燃烧的燃气在喷气预热段顶部的半密封单元内进行富氧二次燃烧，但燃烧的火焰不接触带钢，因此有效避免了带钢表面过氧化；
④带钢预热温度更高，当加热段采用直火加热时，由于高温氮氢保护气体喷射直火预热换热系数高，预热后的带钢温度至少可以达到350℃及以上，比普通预热段带钢温度至少高出100℃；
⑤当加热段采用直火加热时，本发明所述喷射直火预热段出来的直火燃烧废气温度通常远低于750℃(如果高速喷射预热单元布置数量足够多的话甚至可以达到200℃以下直接排放)，无需掺冷空气进行炉外二次利用或根本无需二次利用。
2)通过直火加热设备、横磁感应加热设备与高氢快冷设备的配合使用，实现了高强钢的快速加热、快速冷却退火处理，可以提高高强钢的强度；
3)横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
4)本发明所述均热段采用喷气辐射复合均热段，实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
5)本发明所述技术方案还可以实现冷轧退火、酸洗和闪镀三种不同表面状态的超高强钢连续生产。
本发明的有益效果在于：
1)本发明预热后带钢温度高，热能一次利用率高；
2)本发明实现带钢的快速加热、快速冷却处理，可生产强度级别高的带钢产品；
3)本发明采用喷气辐射复合均热时，带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度可以实现快速调节，可以减少因带钢温度不符造成的质量损 失；
4)本发明快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度，相应780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；
5)本发明实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；
6)本发明技术方案可以实现冷轧退火、酸洗和闪镀三种不同表面状态的超高强钢连续生产。
超短流程双用带钢生产线
本发明的超短流程双用带钢生产线可以根据市场需求量灵活选择连退产品生产或者热镀锌产品生产；机组占地面积少；机组人员配置数量少；燃气消耗量少；降低机组整体运营成本；通过快速加热技术的使用，可以在高强钢加热过程中生成晶粒细小的奥氏体，从而可以进一步提高高强钢的强度；可实现高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力。
为达到上述目的，本发明的技术方案是：
一种超短流程双用带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
带钢选择横磁感应加热进行快速加热，选择气雾冷却或/和水淬冷却进行快速冷却，实现带钢快速加热、快速冷却这种快速热处理工艺。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)并联布置，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺 路径生产连续退火产品；所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
一种超短流程双用带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
带钢选择横磁感应加热进行快速加热，选择气雾冷却或/和水淬冷却进行快速冷却，实现带钢快速加热、快速冷却这种快速热处理工艺。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
本发明设计并联布置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品，而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联设计，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
一种超短流程双用带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
带钢选择横磁感应加热进行快速加热，选择气雾冷却或/和水淬冷却进行快速冷却，实现带钢快速加热、快速冷却这种快速热处理工艺。
本发明设计采用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
本发明设计并联布置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时 效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联设计，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
一种超短流程双用带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
带钢选择横磁感应加热进行快速加热，选择气雾冷却或/和水淬冷却进行快速冷却，实现带钢快速加热、快速冷却这种快速热处理工艺。
本发明设计采用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺；其特征还为所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
本发明设计并联布置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀锌产品，而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联设计，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
优选的，在气刀段后还布置移动镀后快冷段，该移动镀后快冷段为在线、离线切换设置，并与合金化加热段(设计为可移动的)并联布置。生产热镀纯锌产品时，移动镀后快冷段在线，对镀后带钢进行快速冷却，此时合金化加热段离线；生产合金化热镀锌产品时，移动镀后快冷段离线，此时合金化加热段在线，对带钢进行合金化加热。
优选的，在焊接工位与入***套工位之间设置可选择的清洗工位，带钢可以选择经过清洗工位进行清洗，也可以旁通跳过清洗工位。
优选的，将清洗工位设置在入***套工位之后，带钢可以选择经过清洗工位进行清洗，也可以旁通跳过清洗工位。
优选的，在入***套工位之前和之后均设置清洗工位，对带钢进行二次清洗，进一步提高带钢表面质量。
优选的，在横磁感应加热段之前还布置纵磁感应加热段，带钢先经过纵磁感应加热段，可以选择纵磁感应加热，也可以从纵磁感应加热段中空过直接进入横磁感应加热段进行加热。
优选的，在所述的酸洗段之后设置闪镀铁或镍段工位，酸洗后的带钢可以选择闪镀铁或镍，以提高带钢的可镀性。
优选的，在卷取工位前设置精整工位，对带钢进行精整后再卷取。
优选的，在平整工位之前还设置中间活套工位，以实现平整机在线更换工作辊时可以不损失带钢质量。
优选的，在平整工位与出***套工位之间设置拉矫工位，带钢可以拉矫后再进入出***套。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，带钢可以进行钝化或耐指纹等表面后处理，然后再进入出***套。
优选的，在平整工位与出***套工位之间同时设置拉矫工位及相应的和钝化或耐指纹等表面后处理工位，带钢可以进行钝化或耐指纹等表面后处理，然后再进入出***套。
本发明所述生产线与传统连续热处理线的不同点或创新点在于：
1)可以灵活地选择连退产品生产或者热镀锌产品生产；
2)设备配置得相对简洁，占地面积小；
3)生产线所需配置的人员少；
4)生产线消耗的燃气少；
5)生产线综合运营成本低；
6)生产线CO2和NOx的排放量少，适合建于城市钢厂；
7)通过横磁感应加热设备与多种快速冷却设备的配合使用，实现了快速加热、快速冷却退火处理，可以连续生产快速热处理高强带钢；
8)可以实现冷轧、热镀纯锌和合金化热镀锌三种不同表面状态的带钢产品的连续生产。
本发明的有益效果在于：
1)可以灵活地选择连退产品生产或者热镀锌产品生产；
2)设备配置得相对简洁，占地面积小；
3)生产线所需配置的人员相对较少；
4)生产线消耗的燃气少；
5)生产线综合运营成本低；
6)生产线CO2和NOx的排放量少，适合建于城市钢厂；
7)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度；780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)；
8)实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间。
超短流程热镀纯锌高强带钢生产线
本发明的超短流程热镀纯锌高强带钢生产线可以实现以下目的：1)减少机组占地面积；2)减少机组人员配置数量；3)降低机组整体运营成本；4)通过快速加热技术的使用，可以在高强钢加热过程中生成晶粒细小的奥氏体，从而可以进一步提高高强钢的强度；5)实现高强钢的快速加热、超快速冷却处理，缩短带钢的热处理周期时间，可以生产马氏体含量高的超高强钢产品；6)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；7)实现高强钢的超高温加热，带钢的加热温度可以加热到900℃甚至以上，从而实现热镀锌高强钢的超高温加热退火处理。
为达到上述目的，本发明的技术方案是：
一种超短流程热镀纯锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，所述中央连续后处理工位依次包括快速加热工位、均热工位、快速冷却工位、表面改性工位和热镀纯锌工位；所述快速加热工位采用直火加热设备；所述均热工位采用辐射管均热设备或喷气辐射复合均热设备；所述快速冷却工位采用气雾冷却设备或水淬冷却设备；所述表面改性工位采用酸洗设备；所述热镀纯锌工位依次设置再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；至此，在同一条生产线上同时采用直火加热设备和气雾冷却设备进行快速加热、快速冷却处理，并使用酸洗设备进行表面改性，提高超高强钢的可镀性，实现热镀锌超高强带钢的连续生产。
优选的，所述快速加热工位依次设置直火加热设备和横磁感应加热设备。
优选的，所述表面改性工位中，在酸洗段后还设置可选择的闪镀铁或闪镀镍设备，再接后续的所述热镀纯锌工位。
优选的，所述热镀纯锌工位中，在气刀段与镀后冷却段之间还可选择地设置移动镀后 快冷设备。
优选的，将所述热镀纯锌工位更换为合金化热镀锌工位，即在气刀段与镀后冷却段之间设置合金化加热段、合金化均热段，实现即可以生产热镀纯锌产品也可以生产合金化热镀锌产品。
优选的，所述热镀锌工位，在气刀段后，与合金化加热段并列设置了可选择的移动镀后快冷段设备。
优选的，在焊接工位与入***套工位之间设置清洗工位。
优选的，在入***套工位之后设置清洗工位。
优选的，在平整工位前设置中央活套设备。
优选的，在卷取工位与出***套工位之间设置精整工位设备，带钢精整后再进行卷取。
优选的，在平整工位与出***套工位之间设置拉矫工位。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位设备。
优选的，在平整工位与出***套工位之间同时设置拉矫工位和钝化或耐指纹等表面后处理工位。
优选的，所述均热工位采用电辐射管均热设备、电阻丝均热设备或电阻带均热设备代替所述辐射管均热设备或喷气辐射复合均热设备。
本发明与传统连续热处理线的不同点或创新点在于：
1)本发明技术方案设备配置简洁，占地面积小。
2)本发明技术方案的热镀纯锌和合金化热镀锌超高强钢生产线所需配置的人员少。
3)本发明技术方案的超高强钢生产线综合运营成本低。
4)通过直火加热设备的使用，可以对超高强钢使用预氧化还原处理，提高高强钢的可镀性。
5)通过直火加热设备+横磁感应加热设备与气雾冷却或水淬冷却或气雾+水淬冷却设备的配合使用，实现了高强钢的快速加热、特快速冷却退火处理，减少了退火过程中基板中Si、Mn等强化元素在基板表面的富集量，进一步提高高强钢的可镀性，并且可以生产马氏体含量高的超高强钢。
6)本发明技术方案通过横磁感应加热设备与直火加热设备的串联使用，可以将带钢快速加热到900℃甚至以上。
7)本发明技术方案中合金化热镀锌高强钢生产线，可以同时生产热镀纯锌和合金化热镀锌两种镀层种类的热镀锌产品。
本发明的有益效果体现在：
1)机组长度短，占地面积小。
2)机组人员配置得少，一条机组4个人即可运行起来。
3)机组整体运营成本低。
4)快速加热、超快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度，相应780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力。
5)实现了马氏体钢热镀锌和合金化热镀锌产品的生产。
6)实现高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间。
7)实现高强钢的超高温加热，带钢的加热温度可以加热到900℃甚至以上，从而实现高强钢的超高温加热退火处理。
超短流程超高强带钢生产线
本发明的超短流程超高强带钢生产线可以实现以下目的：1)减少机组占地面积；2)减少机组人员配置数量；3)降低机组整体运营成本；4)通过快速加热技术的使用，可以在超高强钢加热过程中生成晶粒细小的奥氏体，从而可以进一步提高超高强钢的强度；5)实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；6)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)；7)实现超高强钢的超高温加热，带钢的加热温度可以加热到900℃甚至以上，从而实现超高强钢的超高温加热退火处理。
为达到上述目的，本发明的技术方案是：
一种超短流程超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-卷取；其中，所述中央连续后处理工位依次包括快速加热工位、均热工位和快速冷却工位；所述快速加热工位采用喷气辐射复合加热装置；所述均热工位采用辐射管均热设备、喷气辐射复合均热设备、电辐射管均热设备、电阻丝均热设备或电阻带均热设备；所述快速冷却工位采用高氢冷却设备、气雾冷却设备或水淬冷却设备。
进一步，所述快速加热工位采用喷气辐射复合加热装置与横磁感应加热设备串联布置，且，所述快速冷却工位采用气雾冷却设备与水淬冷却设备串联或并联布置，或为高氢冷却设备与水淬冷却设备并联布置，或为高氢冷却设备与气雾冷却设备并联布置，或为高氢冷却设备、气雾冷却设备与水淬冷却设备并联布置。
优选，在焊接工位与入***套工位之间设置可选择的清洗工位。
更进一步，所述快速加热工位采用并联设置可选择的直火加热设备与串联设置的喷气辐射复合加热装置+横磁感应加热设备，带钢可以选择先经过直火加热设备再经串联设置的喷气辐射复合加热装置+横磁感应加热设备加热，也可以旁通跳过直火加热设备直接进入串联设置的喷气辐射复合加热装置+横磁感应加热设备进行加热。
又，所述快速加热工位采用可选择的纵磁感应加热设备与串联设置的喷气辐射复合加热装置+横磁感应加热设备并联或串联布置，带钢可以选择先经过纵磁感应加热设备加热，也可以旁通跳过纵磁感应加热设备直接进入串联布置的喷气辐射复合加热装置+横磁感应加热进行加热。
优选的，卷取工位前、中央连续后处理工位后设置可选择的酸洗段设备，当带钢经过酸洗段时可用于带钢的酸洗，当不需对带钢进行酸洗时，带钢可旁通不经过酸洗段。
优选的，在所述的酸洗段之后、卷取工位之前设置可选择的闪镀段，酸洗后的带钢可以选择进入闪镀段，生产闪镀镍或锌等闪镀产品，当不需对带钢进行闪镀时，带钢可以旁通不经过闪镀段。
优选的，在卷取工位前设置平整工位，对带钢进行平整后再卷取。
优选的，在卷取工位与平整工位之间设置精整工位，带钢平整后进行精整再卷取。
优选的，用电辐射管均热设备或电阻丝均热设备或电阻带均热设备代替辐射管均热设备或喷气辐射复合均热设备，用于没有燃气供用的地方建设本发明生产线生产超高强带钢。
优选地，在焊接工位与入***套工位之间设置可选择的清洗工位，带钢可以选择经过清洗工位进行清洗，也可以旁通跳过清洗工位。进一步优选，将可选择的清洗工位设置紧跟在入***套工位之后，从而当带钢进入清洗工位设备进行清洗时可以实现恒速清洗，维持稳定的带钢表面清洗质量。
本发明所述生产线与传统连续热处理线不同点或创新点在于：
1)本发明设备配置得简洁，占地面积小；
2)本发明的超高强钢生产线所需配置的人员少；
3)本发明的超高强钢生产线综合运营成本低；
4)本发明的超高强钢生产线本身实现了CO2和NOx的少量排放甚至零排放，非常适合建于城市钢厂；
5)通过喷气辐射复合加热装置与多种快速冷却设备的配合使用，实现了超高强钢的快速加热、快速冷却退火处理，可以连续生产快速热处理超高强带钢；
6)本发明通过直火加热设备与喷气辐射复合加热装置的串联使用，可以比较经济地将带钢快速加热到900℃甚至以上温度；
7)本发明在快速冷却工位，有四种工艺路径可供选择，生产工艺灵活多样；
8)本发明可以实现冷轧、酸洗和闪镀三种不同表面状态的超高强钢的连续生产。
本发明的有益效果在于：
1)机组长度相较现有产线的长度可缩短1/3左右；
2)机组人员可以少配置，一条机组3个人甚至只要2个人即可运行起来；
3)机组整体运营成本低；
4)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度；780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；
5)实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；
6)实现超高强钢的超高温加热，带钢的加热温度可以加热到900℃甚至以上温度，从而实现超高强钢的超高温加热退火处理。
超短流程热镀锌高强带钢生产线
本发明的超短流程热镀锌高强带钢生产线可以实现以下目的：1)减少机组占地面积；2)减少机组人员配置数量；3)降低机组整体运营成本；4)通过快速加热技术的使用，可以在高强钢加热过程中生成晶粒细小的奥氏体，从而可以进一步提高高强钢的强度；5)实现高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；6)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；7)实现高强钢的超高温加热，带钢的加热温度可以加热到900℃甚至以上，从而实现热镀锌高强钢的超高温加热退火处理。
为达到上述目的，本发明的技术方案是：
一种超短流程热镀纯锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，所述中央连续后处理工位依次包括快速加热段、均热段、快速冷却段和热镀锌段；所述快速加热段采用直火加热；或，直火加热与横磁感应加热串联布置；或，直火加热、喷气辐射复合加热、横磁感应加热串联布置；所述均热段采用喷气辐射复合均热、电辐射管均热、电阻丝均热或电阻带均热；所述快速冷却段采用高氢冷却；所述热镀锌段依次设有炉鼻子、锌锅、气刀、镀后冷却设备和最终水冷设备。
进一步，所述热镀锌段中，气刀与镀后冷却设备之间设置合金化加热设备、合金化均热设备，实现合金化热镀锌产品生产。
更进一步，所述热镀锌段中，在气刀后、镀后冷却设备前设置可选择的移动镀后快冷设备。
优选的，在焊接工位与入***套工位之间设置可选择的清洗工位，带钢可以选择经过清洗工位进行清洗，也可以旁通跳过清洗工位；或，入***套工位之后设置可选择的清洗工位，从而当带钢进入清洗工位进行清洗时可以实现恒速清洗，维持稳定的带钢表面清洗质量。
优选的，平整工位前、中央连续后处理工位之后设置中央活套工位。
优选的，在卷取工位与出***套工位之间设置精整工位，带钢精整后再进行卷取。
优选的，在平整工位与出***套工位之间设置拉矫工位，带钢可以选择进行拉矫处理后再进入出***套工位。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，带钢可以选择进行钝化或耐指纹等表面处理再进入出***套；或，在平整工位与出***套工位之间还同时设置拉矫工位和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面处理再进入出***套工位。
优选的，用电辐射管均热段或电阻丝均热段或电阻带均热段代替喷气辐射复合均热，用于燃气供用紧张的地方建设本发明生产线生产热镀锌高强带钢。
本发明所述生产线与传统连续热处理线不同点或创新点在于：
1)本发明设备配置得简洁，占地面积小；
2)本发明的热镀纯锌和合金化热镀锌高强钢生产线所需配置的人员少；
3)本发明的超高强钢生产线综合运营成本低；
4)本发明通过直火加热设备的使用，可以对高强钢使用预氧化还原处理，提高高强钢的可镀性；
5)本发明通过直火加热设备、横磁感应加热设备、喷气辐射复合加热/均热装置与高氢快冷设备的配合使用，实现了高强钢的快速加热、快速冷却退火处理，减少了退火过程中基板中Si、Mn等强化元素在基板表面的富集量，进一步提高高强钢的可镀性；
6)本发明通过横磁感应加热设备与直火加热设备、喷气辐射复合加热/均热装置的串联使用，可以将带钢快速加热到900℃甚至以上；
7)本发明中合金化热镀锌高强钢生产线，可以同时生产热镀纯锌和合金化热镀锌两种镀层种类的热镀锌产品。
本发明的有益效果在于：
1)机组长度短，占地面积小；
2)机组人员配置得少，一条机组4个人即可运行起来；
3)机组整体运营成本低；
4)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度，相应780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；
5)实现高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；
6)实现高强钢的超高温加热，带钢的加热温度可以加热到900℃甚至以上，从而实现高强钢的超高温加热退火处理。
柔性化的适合生产多种高强钢的冷轧带钢后处理生产线
本发明的柔性化的适合生产多种高强钢的冷轧带钢后处理生产线可以实现以下目的：1)辐射管燃烧废气余热的充分利用，可以将带钢温度快速预热到至少250℃以上；2)辐射管燃烧废气充分预热带钢后降温明显可直接排放，无需增加锅炉或过热水加热装置进行燃烧废气余热的二次利用，显著降低投资、减少占地面积；3)辐射管燃烧废气余热基本都传输到了带钢上，热能一次利用率高；4)在超高温期间实现横磁感应快速加热，提高热能利用率；5)可实现带钢退火加热温度和均热温度的快速调节；6)柔性化的高强钢专用生产线可以灵活生产各种冷轧、热镀纯锌(GI)、合金化热镀锌(GA)、冷轧表面闪镀镍或闪镀锌等新产品，因此产线能够较好地满足市场需要；7)由于马弗炉炉内气氛的独立控制，使得高强钢表面合金元素扩散与富集得到有效控制，故超高强钢产品的可镀性可以大幅度提高，因此超高强度热镀产品的表面质量也可以显著提高；8)本发明快速加热技术结合快速冷却技术的应用，可采用较低合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低生产成本，还可以提高各种超高强钢产品的力学性能。
为达到上述目的，本发明的技术方案是：
一种柔性化的适合生产多种高强钢的冷轧带钢后处理生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；其中，所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、并联设置的可选择的横磁感应加热段或马弗炉段、喷气辐射复合均热段、缓冷段、快速冷却段、再加热段；所述快速冷却段包括高氢冷却或/和气雾冷却或/和水淬冷却段；所述再加热段后设炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段、最终水冷段； 或，通过移动通道、过时效段、最终喷气冷却段连接至所述最终水冷段；最终水冷段后可选择依次设置酸洗段或酸洗段+闪镀段；带钢可以选择经过酸洗段生产冷轧酸洗产品，也可以旁通跨过酸洗段生产冷轧退火产品，带钢酸洗后还可以选择进入闪镀段，生产闪镀镍或者闪镀锌等闪镀产品；所述辐射管加热段燃烧天然气或液化石油气或煤气等气体燃料，燃烧过程中产生高温废气，所述喷射辐射管预热段利用加热段或/和均热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述的辐射管加热段与(并联设置的可选择横磁感应加热段或马弗炉段)串联；所述的喷气辐射复合均热段采用强制对流与辐射相结合的方式快速均热带钢，提高带钢温度均匀性和实现带钢均热温度的快速调节；所述冷轧带钢后处理生产线采用喷射辐射管预热段的同时采用进行快速冷却处理，然后进行再加热，然后进行镀锌或过时效处理；所述炉鼻子段与移动通道并联布置，带钢从炉鼻子段向后通过生产热镀纯锌或者合金化热镀锌产品，带钢从移动通道通过生产冷轧退火、或酸洗或闪镀产品；至此，所述处理线具备至少三种或三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
进一步，在平整工位与出***套工位之间还布置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位，可对带钢进行拉矫和/或表面后处理。
优选的，所述的马弗炉段设备前后自带密封装置，并且马弗炉段设备还配备气氛调节装置，对其内的氢气含量、氧气含量和露点可以单独进行调节控制。
优选的，在再加热段与炉鼻子段之间还布置均衡保温段设备，对带钢进行保温处理后再进行热镀锌。
优选的，在气刀段与镀后冷却段之间还布置移动镀后快冷段设备，该移动镀后快冷段与合金化加热设备并联布置，实现热镀纯锌高强钢产品镀后带钢的快速冷却；优选的，在气刀段的上方10米范围内设置移动镀后快冷段设备。
优选的，在均衡保温段之后布置二次再加热段设备，对均衡保温的带钢进行二次再加热，然后进行热镀锌或者过时效处理。
优选的，在所述快速冷却段与再加热段之间布置酸洗段设备，该酸洗段设备包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，对于热镀纯锌或者合金化热镀锌产品，也可以提高高强带钢特别是超高强带钢的可镀性。
优选的，在酸洗段之后布置闪镀铁或闪镀镍段设备，然后再进行再加热处理，进一步提高超高强带钢的可镀性。
优选的，所述移动镀后快冷段采用移动喷气快冷设备或者移动气雾冷却设备。
柔性化的适合于生产多种超高强带钢的冷轧后处理生产线
本发明的柔性化的适合于生产多种超高强带钢的冷轧后处理生产线可以实现：1)辐射管燃烧废气余热的充分利用，可以将带钢温度快速预热到至少250℃以上；2)辐射管燃烧废气充分预热带钢后降温明显可直接排放，无需增加锅炉或过热水加热装置进行二次利用，显著降低投资、减少占地面积；3)辐射管燃烧废气余热基本都传输到了带钢上，热能一次利用率高；4)在超高温期间实现快速加热，提高热能利用率；5)可实现带钢退火加热温度的快速调节；6)柔性化的高强钢专用生产线可以灵活生产各种冷轧退火、热镀纯锌(GI)、合金化热镀锌(GA)、酸洗、冷轧表面闪镀镍或闪镀锌等闪镀新产品，因此产线能够较好地满足市场需要；7)超高强钢产品的可镀性可以大幅度提高，因此超高强度热镀产品的表面质量也可以显著提高；8)本发明结合快速冷却技术的应用，可采用较低合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低生产成本，还可以提高各种超高强钢产品的力学性能。
为达到上述目的，本发明的技术方案是：
一种柔性化的适合于生产多种超高强带钢的冷轧后处理生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、并联及可选设置的横磁感应加热段或马弗炉段、辐射管均热段、缓冷段、快速冷却段、再加热段，自再加热段起设并联两路，一路为炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段，接最终水冷段；另一路为移动通道段、过时效段、最终喷气冷却段，接最终水冷段；所述最终水冷段后依次可选设置酸洗段及可选设置闪镀段；所述加热段采用燃烧天然气或液化石油气或煤气等气体燃料；所述喷射辐射管预热段利用辐射管加热段或/和辐射管均热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述快速冷却段包括高氢冷却或/和气雾冷却或/和水淬冷却段。
该生产线采用喷射辐射管预热段的同时采用高氢冷却或气雾冷却或/和水淬冷却对带钢进行快速冷却处理，然后再依次进行再加热、镀锌或过时效处理。
所述炉鼻子段与移动通道段并联布置，带钢从炉鼻子段向后通过生产热镀纯锌或者合金化热镀锌产品，带钢从移动通道段通过生产冷轧退火、或酸洗或闪镀产品。
在最终水冷段后布置酸洗段及闪镀段，带钢可以选择经过酸洗段生产冷轧酸洗产品，也可以旁通跨过酸洗段生产冷轧退火产品，带钢酸洗后还可以选择进入闪镀段，生产闪镀镍或者闪镀锌等闪镀产品。
至此，该生产线具备三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
优选的，在平整工位与出***套工位之间设置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位，可对带钢进行拉矫和/或表面后处理。
优选的，所述的马弗炉段设备前后自带密封装置，并且马弗炉段设备还配备气氛调节装置，对其内的氢气含量、氧气含量和露点可以单独进行调节控制。
优选的，在再加热段与炉鼻子段之间还布置均衡保温段，对带钢进行保温处理后再进行热镀锌。
优选的，在气刀段与镀后冷却段之间还布置移动镀后快冷段，该移动镀后快冷段与合金化加热段并联布置，实现热镀纯锌高强钢产品镀后带钢的快速冷却；优选，在气刀段的上方10米范围内设置移动镀后快冷段。
优选的，在均衡保温段之后布置二次再加热段设备，对均衡保温的带钢进行二次再加热，然后进行热镀锌或者过时效处理。
优选的，在高氢冷却或气雾冷却或/和水淬冷却段与再加热段之间布置酸洗段，该酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，对于热镀纯锌或者合金化热镀锌产品，也可以提高高强带钢特别是超高强带钢的可镀性。
优选的，在酸洗段之后再加热段之前布置闪镀铁或闪镀镍段，然后再进行再加热处理，可以进一步提高超高强带钢的可镀性。
优选的，所述移动镀后快冷段使用可移动的喷气快冷设备或者可移动的气雾冷却设备。
适合生产多种高强钢的柔性化冷轧带钢后处理线
本发明的适合生产多种高强钢的柔性化冷轧带钢后处理线可以生产冷轧连续退火、酸洗、闪镀、热镀纯锌(GI)和合金化热镀锌(GA)超高强带钢，该生产线可以实现以下目的：1)直火炉废气余热的充分利用，可以将带钢温度快速预热到至少350℃以上；2)避免直火燃烧废气在预热炉内长时间直接接触带钢，从而避免带钢表面生成过厚的氧化层；3)可以利用快速高效预热和直火加热将带钢温度快速加热到750℃以上，配合后续使用横磁感应加热和喷气辐射复合加热可以将带钢快速均匀加热到850℃以上，完成快速高效均匀加热；4)得益于加热炉的显著缩小、炉子热惯性减小和横磁感应加热响应速度快，可以实现带钢退火温度的快速调节；5)整个快速热处理炉可以显著简单化、小型化、高效化，因此能够节能减排、减小占地面积；6)柔性化的高强钢专用生产线可以灵活生产各种冷轧退火、酸洗、闪镀、热镀纯锌(GI)和合金化热镀锌(GA)等产品，因此该柔性产线能够较好地 满足市场需要；7)超高强钢产品的可镀性可以大幅度提高，因此超高强度热镀产品的表面质量也可以显著提高；8)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能)。
为达到上述目的，本发明的技术方案是：
一种适合生产多种高强钢的柔性化冷轧带钢后处理线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段或喷气辐射复合加热段、喷气辐射复合均热段、缓冷段、快速冷却段、再加热段；自再加热段后并联布置两路产线，一路设炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段，再连接最终水冷段；另一路设移动通道段、过时效段、最终喷气冷却段，再连接所述最终水冷段；所述最终水冷段后设可选择的酸洗段、闪镀段；所述快速冷却段包括高氢冷却或气雾冷却或/和水淬冷却段；所述直火加热段燃烧天然气或液化石油气等气体燃料；所述喷射直火预热段利用直火加热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述的横磁感应加热段或喷气辐射复合加热段采用并联或串联布置；在平整工位与出***套工位之间设置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位；所述的喷气辐射复合均热段采用强制对流与辐射相结合的快速均热方式；至此，该生产线具备三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
进一步，在喷气辐射复合加热段与喷气辐射复合均热段之间设置辐射管加热段。
更进一步，在再加热段与炉鼻子段之间布置均衡保温段。
又，在均衡保温段之后布置二次再加热段，二次再加热段连接所述移动通道段、炉鼻子段。
又，在气刀段与镀后冷却段之间设置移动镀后快冷段，该移动镀后快冷段与合金化加热设备并联布置；优选的，在气刀段的上方10米范围内设置移动镀后快冷段。
优选的，在所述快速冷却段与再加热段之间设置酸洗段，该酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元。
优选的，在酸洗段之后再加热段之前设置闪镀铁或闪镀镍段，再连接所述再加热段。
柔性化的生产多种高强/超高强钢的生产线
本发明的柔性化的生产多种高强/超高强钢的生产线可以实现以下目的：1)直火燃烧废气余热的充分利用，可以将带钢温度快速预热到至少350℃以上；2)避免直火燃烧废气在 预热炉内长时间直接接触带钢，从而避免带钢表面生成过厚的氧化层；3)可以利用快速高效预热和直火加热将带钢温度快速加热到750℃以上，配合后续使用横磁感应加热和喷气辐射复合加热可以将带钢快速均匀加热到850℃以上，完成快速高效均匀加热；4)得益于加热炉的显著缩小、炉子热惯性减小和横磁感应加热响应速度快，可以实现带钢退火温度的快速调节；5)整个快速热处理炉可以显著简单化、小型化、高效化，因此能够节能减排、减小占地面积；6)柔性化的高强钢生产线可以灵活生产各种冷轧退火、热镀纯锌(GI)、合金化热镀锌(GA)、冷轧表面闪镀镍或闪镀锌等闪镀产品，因此该柔性产线能够较好地满足市场需要；7)超高强钢产品的可镀性可以大幅度提高，因此超高强度热镀产品的表面质量也可以显著提高；8)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)。
为达到上述目的，本发明的技术方案是：
一种柔性化的生产多种高强/超高强钢的生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段及两路并联设置的处理线、最终水冷段和可选择的酸洗段及闪镀段；
其中一路处理线包括炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段；另一路处理线移动通道段、过时效段、最终喷气冷却段；
所述加热段采用直火加热段和横磁感应加热段和/或喷气辐射复合加热段；
所述的横磁感应加热段与喷气辐射复合加热段采用并联或串联布置；
所述快速冷却段包括高氢冷却或气雾冷却或/和水淬冷却；
在平整工位与出***套工位之间还布置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位。
优选的，所述的可选择的酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，也可以用于提高后续闪镀的镀层结合力。
进一步，在喷气辐射复合加热段与辐射管均热段之间设置辐射管加热设备，带钢经横磁感应加热或者喷气辐射复合加热之后还可以进行辐射管加热，再进行辐射管均热，当然带钢喷气辐射复合加热之后也可以直接进行辐射管均热。
更进一步，在再加热段与炉鼻子段之间设置均衡保温段，对带钢进行保温处理后再进行热镀锌。
又，在气刀段与镀后冷却段之间设置移动镀后快冷段设备，该移动镀后快冷段与合金 化加热段并联布置，实现热镀纯锌高强钢产品镀后带钢的快速冷却；优选的，在气刀段的上方10米范围内设置移动镀后快冷段设备。
优选的，所述移动镀后快冷段采用移动喷气快冷段或/和移动气雾快冷段；当同时设置移动喷气快冷段和移动气雾快冷段时，这两工艺段采用并联布置，生产时选择其一实现镀后带钢的快速冷却。
再有，在均衡保温段之后设置二次再加热段，对均衡保温的带钢进行二次再加热，然后进行热镀锌或者过时效处理。
优选的，在快速冷却段与再加热段之间设置酸洗段，该酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，对于热镀纯锌或者合金化热镀锌产品，也可以提高高强带钢特别是超高强带钢的可镀性。
优选的，所述加热段中，依次设置直火加热段、辐射管加热段、横磁感应加热段或喷气辐射复合加热段。
在平整工位与出***套工位之间还布置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位的设备，可对带钢进行拉矫和/或表面后处理。
在本发明所述柔性化的生产多种高强/超高强钢的生产线设计中：
所述加热段燃烧天然气或液化石油气或煤气等气体燃料，燃烧过程中产生高温废气，所述喷射直火预热段利用加热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的横磁感应加热段或喷气辐射复合加热段，用于带钢快速加热，可选择并联布置，也可以选择串联布置，可以根据峰谷电价选择使用横磁感应加热，降低生产成本。
所述炉鼻子段与移动通道段并联布置，带钢从炉鼻子段向后通过生产热镀纯锌或者合金化热镀锌产品，带钢从移动通道段通过生产冷轧或闪镀产品；
所述生产线采用喷射直火预热段的同时采用高氢冷却或气雾冷却或/和水淬冷却进行快速冷却处理，然后进行再加热，然后进行镀锌或过时效处理。
所述生产线具备至少三种或三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
本发明上述柔性生产线与传统连续热处理线不同点或创新点包括：
1.本发明原创性地采用喷射直火预热段预热带钢，更确切地说是高温氮氢保护气体喷射直火预热段。这是本发明新颖性、创造性及实用性的集中体现，其区别于普通预热段的显著特征在于：①采用炉内热交换器(热交换器不是布置在炉外)加热循环利用的氮氢保护气体，利用加热的氮氢保护气体高速喷射到带钢上下表面强制对流换热实现快速高效预 热带钢，此方法与传统的预热方法相比，炉壳及保护气体通道的热量损失显著减少，燃烧废气余热利用更充分、加热效率更高、加热速率更快；②在喷射直火预热段内，加热段燃烧废气从预热段的换热器室通过，在通过过程中加热段燃烧废气与换热器室内的热交换器进行充分的换热，加热氮氢保护气体，因此在喷射直火预热段内加热段燃烧废气不是一直与带钢直接接触(当加热段采用直火加热时，喷射直火预热段仅在高温段短时直接接触而且此时废气属于还原性气氛或微氧化气氛)，从而可以避免带钢表面过氧化；③当加热段采用直火加热时，直火燃烧废气中的未充分燃烧的燃气在喷气预热段顶部的半密封单元内进行富氧二次燃烧，但燃烧的火焰不接触带钢，因此有效避免了带钢表面过氧化；④带钢预热温度更高，当加热段采用直火加热时，由于高温氮氢保护气体喷射直火预热换热系数高，预热后的带钢温度至少可以达到350℃及以上，比普通预热段带钢温度至少高出100℃；⑤当加热段采用直火加热时，本发明所述喷射直火预热段出来的直火燃烧废气温度通常远低于750℃(如果高速喷射预热单元布置数量足够多的话甚至可以达到200℃以下直接排放)，无需掺冷空气进行炉外二次利用或根本无需二次利用。
2.本发明具备至少三种或三种以上可选择工艺路径；
3.本发明可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢特别是超高强钢的生产；
4.本发明对五种不同品种超高强钢都可以进行拉矫或/和钝化或耐指纹等表面后处理；
5.本发明设置了二次再加热段设备，实现了热镀锌或者过时效处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
6.本发明加热段优选使用直火加热段，并在直火加热段后设置快速加热设备，所述快速加热设备既可以选用横磁感应加热段设备，也可以选用喷气辐射复合加热装置，当然也可以同时选用横磁感应加热段设备和喷气辐射复合加热装置，但同时选用横磁感应加热段设备和喷气辐射复合加热装置时，喷气辐射复合加热装置应布置在横磁感应加热段设备之后。同时使用喷射直火预热段和后续快速加热设备，是本发明的新颖性、创造性及实用性的又一体现。当仅选用横磁感应加热段设备时，建议后续段先选择辐射加热装置，再选择均热段设备；但是当选用喷气辐射复合加热段设备时建议不再选择辐射加热段设备。本发明使用快速加热设备的有益效果主要体现在：①可以实现带钢均热温度的快速调节，这对于生产高强钢，特别是超高强钢非常关键，可以减少带钢因均热温度超标导致的性能不符质量损失；②横磁感应加热可以较经济便利地将带钢加热到更高的温度，横磁感应加热已经实现了将带钢快速加热到930℃，实现了传统辐射管加热无法实现的超高温退火；③加热 后的带钢温度均匀性好，沿带钢宽度方向温度均匀性可以控制在±5℃以内；④由于加热速率的显著提高可以细化晶粒组织提高材料的强塑性，对高强钢和超高强钢产品的性能改善和成本降低特别有利。
7.本发明在最终水冷段后平整工位前布置闪镀段设备，带钢可以选择经过闪镀段，也可以旁通跨过闪镀段，从而实现对冷轧高强钢，特别是冷轧超高强钢的表面改性。
8.本发明还在最终水冷段后闪镀段前布置可选择的酸洗段设备，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，也可以用于提高后续闪镀的镀层结合力。
9.本发明还在带钢快冷之后布置了酸洗段或/和闪镀铁或闪镀镍段设备，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，对于热镀纯锌或者合金化热镀锌产品，也可以提高高强带钢特别是超高强带钢的可镀性。
本发明上述柔性生产线的有益效果包括：
1)直火加热燃烧废气余热的一次利用率高，可以将带钢温度预热到至少350℃以上；
2)避免了直火燃烧废气在预热炉内长时间直接接触带钢，可避免带钢表面生成过厚的氧化层；
3)直火燃烧废气中过量燃气的二次引燃燃烧火焰不会接触到带钢，同样可以避免带钢表面生成过厚的氧化层；
4)使用横磁感应加热时可以较经济地将带钢快速加热到850℃以上甚至900℃以上，可以实现超高温退火，从而可以生产出各种新型超高强钢产品；
5)快速加热后的带钢温度均匀性好，沿带钢宽度方向上温度均匀性可以控制在±5℃以内；
6)可以实现各种高强度带钢加热及均热温度的快速调节；
7)用同一条生产线可以生产出连退冷轧DP钢、MS钢、TRIP钢、QP钢和热镀锌DP钢、MS钢、TRIP钢、QP钢等超高强钢产品，而且采用快速热处理工艺生产的各种高强钢产品性能更优、成本更低；
8)采用水雾冷却+酸洗或+酸洗、闪镀镍可以生产出强度高达1500MPa级的马氏体超高强钢，且表面质量和板形质量高，热镀锌时带钢的可镀性好、镀层质量优，而且可以生产热镀锌回火马氏体钢新产品，综合性能优异；
9)本发明通过直火段直火烧嘴空燃比的调节，可以实现预氧化还原工艺，超高强钢的可镀性更好。
连退或热镀锌双用超高强带钢生产线
本发明的连退或热镀锌双用超高强带钢生产线可以实现以下目的：1)可以根据市场需 求量灵活选择连退产品生产或者热镀锌产品生产；2)可以将带钢的预热温度提高到350℃左右，将燃烧热量尽可能传输到带钢上；3)预热后的废气温度较低，不需掺冷风就可以进行炉外二次利用；4)避免直火燃烧废气长时间接触带钢；5)可以实现900℃以上超高温退火；6)通过快速加热技术的使用，可以在高强钢加热过程中生成晶粒细小的奥氏体，从而可以进一步提高高强钢的强度；7)实现高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；8)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)；9)改进均热，实现带钢均热温度的快速调节。
为达到上述目的，本发明的技术方案是：
一种连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、快速冷却段、再加热段，自再加热段设两路并联布置的处理线，一路设有炉鼻子段、锌锅段、气刀段、镀后冷却段，接最终水冷段；另一路设有移动通道段、过时效段、最终喷气冷却段，接所述最终水冷段；该生产线采用喷射直火预热对带钢进行预热，并在直火加热段后设置横磁感应加热设备进行加热温度的快速提升，并选择高氢冷却进行快速冷却；所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述快速冷却段采用高氢冷却段或气雾冷却段或水淬冷却段。
进一步，所述再加热段后依次设置均衡保温段、二次再加热段，再接所述的两路并联布置的处理线。
更进一步，所述热镀锌为合金化热镀锌，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段。
又，本发明所述的连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、快速冷却段、酸洗段、再加热段；自再加热段设两路并联布置的处理线，一路设有炉鼻子段、锌锅段、气刀段、镀后冷却段，接最终水冷段；另一路设有移动通道段、过时效段、最终喷气冷却段，接所述最终水冷段；所述快速冷却段采用气雾冷却段或/和水淬冷却段。
该生产线中，带钢采用喷射直火预热段进行预热，并在直火加热段后设置横磁感应加 热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却；
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
进一步，所述再加热段后依次设置均衡保温段、二次再加热段，二次再加热段再接所述的两路并联布置的处理线。
更进一步，热镀锌为合金化热镀锌，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段。
再有，本发明所述的连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、快速冷却段、酸洗段、再加热段；自再加热段设两路并联布置的处理线，一路设有炉鼻子段、锌锅段、气刀段、镀后冷却段，接最终水冷段；另一路设有移动通道段、过时效段、最终喷气冷却段，接所述最终水冷段；所述快速冷却段采用高氢冷却段、气雾冷却段或/和水淬冷却段，且，高氢冷却段与气雾冷却段或/和水淬冷却段并联布置，高氢冷却段连接所述再加热段；该生产线中，带钢采用喷射直火预热段进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却；所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
进一步，所述再加热段后依次设置均衡保温段、二次再加热段，二次再加热段再接所述的两路并联布置的处理线。
更进一步，热镀锌为合金化热镀锌，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段。
优选的，在气刀段后还布置移动镀后快冷段，该移动镀后快冷段可以在线、离线移动，与合金化加热段并联布置。
优选的，在直火加热段与横磁感应加热段之间还增设辐射管加热段。
优选的，在入***套工位的前后均设置清洗工位。
优选的，在卷取工位前设置精整工位。
优选的，在平整工位之前还设置中间活套工位。
优选的，在平整工位与出***套工位之间设置可选择的拉矫工位，带钢可以拉矫后再进入出***套。
优选的，在平整工位与出***套工位之间设置可选择的钝化或耐指纹等表面后处理工位。
优选的，在平整工位与出***套工位之间同时设置可选择的拉矫工位和可选择的钝化或耐指纹等表面后处理工位。
本发明所述生产线与传统连续热处理线不同点或创新点在于：
1.本发明采用喷射直火预热段设备对带钢进行预热，该喷射直火预热段设备使用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热，可以实现将辐射管燃烧余热全部在线利用，可以将带钢温度预热到至少350℃以上。
所述预热装置在预热炉内增设了换热与喷气风箱单元，利用加热的氮氢保护气体高速喷射到带钢上下表面强制对流换热，实现快速高效预热带钢，此方法与传统的预热方法相比，炉壳及保护气体通道的热量损失显著减少，燃烧直火废气余热利用更充分、加热效率更高、加热速率更快。利用直火废气对喷气风箱内气体加热并通过喷嘴对带钢带了喷气预热，相较现有技术，进一步提高了预热效率，且直火废气热量利用更加充分。
所述预热装置将热交换设计到了预热炉内，直火燃烧废气主要从预热炉换热与喷气风箱单元通过，在通过过程中直火燃烧废气与风箱内的热交换管道进行充分的换热，加热风箱内的氮氢保护气体，因此在预热炉内直火燃烧废气不是一直与带钢直接接触(仅在高温段短时直接接触而且此时废气属于还原性气氛或微氧化气氛)，从而可以避免带钢表面过氧化。
所述预热装置在预热炉内设计直火燃烧废气二次燃烧室及明火烧嘴，直火燃烧废气中的未充分燃烧的燃气在预热炉顶部的半密封的直火燃烧废气二次燃烧室内进行富氧二次燃烧，但燃烧的火焰不接触带钢，因此有效避免了带钢表面过氧化。
采用所述预热装置预热，带钢预热温度更高，由于高温氮氢保护气体喷射直火喷射预热换热系数高，预热后的带钢温度可以达到350℃以上，比普通预热炉带钢温度至少高出100℃；
所述预热炉出来的直火燃烧废气温度通常远低于750℃(如果高速喷射预热单元布置数量足够多的话甚至可以达到200℃以下直接排放)，无需掺冷空气进行炉外二次利用或根本无需二次利用。可以看出，所述预热装置既实现了直火炉废气余热的充分利用，又避免了直火炉废气过长时间接触带钢造成带钢表面过量氧化。
直火加热段后设置了横磁感应加热段设备，该横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
2.本发明设置二次再加热段，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理。
3.本发明可以灵活地选择四种不同的冷却路径生产连退产品或者生产热镀锌产品；
4.通过横磁感应加热设备与多种快速冷却设备的配合使用，实现了快速加热、快速冷却退火处理，可以连续生产快速热处理高强带钢；
5.本发明使用喷气辐射复合均热替代辐射管均热，可以实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节；
6.本发明可以实现冷轧退火、热镀纯锌和合金化热镀锌三种不同表面状态的带钢产品的连续生产。
本发明的有益效果在于：
1)本发明可以灵活地选择连退产品生产或者热镀锌产品生产；
2)本发明避免了直火燃烧废气过长时间接触带钢，带钢表面质量和可镀性好；
3)本发明预热后带钢温度高，热能一次利用率高；
4)本发明采用横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
5)本发明采用二次再加热设备，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
6)本发明快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度；780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；
7)本发明实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；
8)本发明使用喷气辐射复合均热替代辐射管均热，可以实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
连退或热镀锌双用高强带钢生产线
本发明的连退或热镀锌双用高强带钢生产线可以实现以下目的：1)可以根据市场需求量灵活选择连退产品生产或者热镀锌产品生产；2)可以将带钢的预热温度提高到250℃左右，将燃烧热量尽可能传输到带钢上；3)预热后的废气温度较低，废气温度可以降低到200℃以下，可以不进行炉外二次利用直接排放，当然也可以加热水进行余热的进一步利用；4)可以实现900℃以上超高温退火；5)通过快速加热技术的使用，可以在高强钢加热过程中生成晶粒细小的奥氏体，从而可以进一步提高高强钢的强度；6)实现高强钢的快速加热、 快速冷却处理，缩短带钢的热处理周期时间；7)快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，不仅可以降低高强钢生产成本，还可以提高各种高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；8)改进均热，实现带钢均热温度的快速调节。
为达到上述目的，本发明的技术方案是：
一种连退或热镀锌双用高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段包括高氢冷却段或/气雾冷却段或/水淬冷却段。
进一步，所述再加热段后设均衡保温段、二次再加热段，二次再加热段再连接所述并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)。
更进一步，热镀锌为合金化热镀锌，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段。
又，本发明所述的连退或热镀锌双用高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、酸洗段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段包括气雾冷却段和水淬冷却段，带钢可选择气雾冷却或水淬冷却，也可选择先气雾冷却再水淬冷却。
进一步，所述再加热段后设均衡保温段、二次再加热段，二次再加热段再连接所述并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)。
更进一步，热镀锌为合金化热镀锌，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段。
再有，本发明所述的连退或热镀锌双用高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、均热段、缓 冷段、快速冷却段、酸洗段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段采用高氢冷却段、气雾冷却段或/和水淬冷却段，且，高氢冷却段与气雾冷却段或/和水淬冷却段并联布置，高氢冷却段连接所述再加热段。
进一步，所述再加热段后设均衡保温段、二次再加热段，二次再加热段再连接所述并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)。
更进一步，热镀锌为合金化热镀锌，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段。
优选的，在气刀段后还布置可移动的镀后快冷段，且，与合金化加热段并联布置，使镀后快冷段形成在线、离线切换设计。生产热镀纯锌产品时，移动镀后快冷段在线，对镀后带钢进行快速冷却，此时合金化加热段离线；生产合金化热镀锌产品时，移动镀后快冷段离线，此时合金化加热段在线，对带钢进行合金化加热。
优选的，将辐射管均热段更换为喷气辐射复合均热段，实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
优选的，在再加热段前设置闪镀镍或闪镀铁段，用以提高带钢耐蚀性或可镀性。
优选的，在入***套工位的前、后均设置清洗工位对带钢进行二次清洗，进一步提高带钢表面质量。
优选的，在卷取工位前设置精整工位，对带钢进行精整后再卷取。
优选的，在平整工位之前设置中间活套工位，以实现平整机在线更换工作辊时可以不损失带钢质量。
优选的，在平整工位与出***套工位之间设置可选择的拉矫工位，带钢可以拉矫后再进入出***套。
优选的，在平整工位与出***套工位之间设置可选择的钝化或耐指纹等表面后处理工位，带钢可以进行钝化或耐指纹等表面后处理，然后再进入出***套。
优选的，在平整工位与出***套工位之间同时设置可选择的拉矫工位设备和可选择的钝化或耐指纹等表面后处理工位，带钢可以进行钝化或耐指纹等表面后处理，然后再进入出***套。
本发明所述生产线与传统连续热处理线不同点或创新点在于：
1)本发明采用了喷射辐射管预热段设备对带钢进行预热，该喷射辐射管预热段设备使用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到 带钢上下表面实现强制对流换热，可以实现将辐射管燃烧余热在线全部利用，可以将带钢温度预热到至少250℃以上，该喷射辐射管喷射预热段是本发明的核心技术之一。
2)本发明辐射管加热段后设置横磁感应加热段设备，该横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
3)本发明可以灵活地选择四种不同的冷却路径生产连退产品或者生产热镀锌产品；
4)本发明通过横磁感应加热设备与多种快速冷却设备的配合使用，实现了快速加热、快速冷却退火处理，可以连续生产快速热处理高强带钢；
5)本发明使用喷气辐射复合均热替代辐射管均热，可以实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
6)本发明可以实现冷轧退火、热镀纯锌和合金化热镀锌三种不同表面状态的带钢产品的连续生产。
7)本发明设置二次再加热段设备的技术方案，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理。
本发明的有益效果在于：
1)本发明可以灵活地选择连退产品生产或者热镀锌产品生产；
2)本发明预热后带钢温度高，热能一次利用率高；
3)本发明采用横磁感应加热用于高温带钢的进一步快速提升，可以实现高强钢的超高温退火；
4)本发明采用二次再加热设备，实现了热镀锌处理前带钢温度的两次抬升，可以实现第三代高强钢(QP钢)产品快冷到较低的温度，然后马上快速加热到较高的温度进行长时间碳再分配处理，处理结束后二次快速再加热到热镀锌入锌锅温度，进行镀锌处理；
5)本发明快速加热、快速冷却及快速热处理工艺技术的应用可以采用较低的合金成分生产更高强度等级的各种先进高强钢产品，450MPa级产品的成分可以达到590MPa级产品的强度；780MPa级产品的成分可以达到980MPa级产品的性能，不仅可以降低高强钢生产成本，还可以提高各种超高强钢产品的力学性能及后续加工性能(如焊接性能、涂装性能)，显著提高高强钢产品的市场竞争力；
6)本发明实现超高强钢的快速加热、快速冷却处理，缩短带钢的热处理周期时间；
7)本发明使用喷气辐射复合均热替代辐射管均热，可以实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
喷射直火预热装置
用于本发明各生产线的喷射直火预热装置包括：直火炉、预热炉；其中，
所述直火炉包括：
炉壳，其上下端分别设置炉顶辊室、炉底辊室；炉顶辊室、炉底辊室内分别设置转向辊；炉壳内沿高度方向设置若干直火加热区，直火加热区内设置若干直火烧嘴；炉壳上部侧壁设至少两个通孔，且左右对称设置；
所述预热炉包括：
炉体，其上部侧壁设至少两个连接孔，且左右对称设置，并分别通过连通管连接所述直火炉炉壳上部的通孔；炉体顶端设与所述直火炉炉顶辊室对应、供带钢穿过的炉喉；炉体底部设带钢入口及相应的密封装置和转向辊；炉体内上部设一穿带孔的上隔板，形成直火废气上集气室；直火废气上集气室下方设直火燃烧废气二次燃烧室，直火燃烧废气二次燃烧室内设至少一只明火烧嘴；优选的，所述直火燃烧废气二次燃烧室内还设置燃烧废气测温计；炉体内下部设一带穿带孔的下隔板，形成直火废气下集气室，并通过一废气排出管道连接一废气风机；所述废气排出管道上设置控制阀；
若干换热与喷气风箱单元，沿炉体高度方向设置于所述炉体内直火燃烧废气二次燃烧室下方的两侧，中间形成供带钢穿过的穿带通道；每个换热与喷气风箱单元包括，
风箱体，其内竖直设置若干热交换管，风箱体相对所述穿带通道的一侧面设置若干喷嘴；上下设置的风箱体之间设置与热交换管连通的废气二次混合室；风箱体内通入氮氢保护气体；
循环风机，其进口管道的端口设置于所述穿带通道内，其出口管道的端口位于风箱体内；
若干可供带钢穿过的密封装置，分别设置于所述穿带通道的上下端口处及上、下隔板的穿带孔处；优选的，所述密封装置为氮气密封结构，采用氮气密封室，其上设有氮气注入管道。
生产过程中，直火炉直火燃烧产生的高温燃烧废气通过连通管进入预热炉，预热炉内设有多个依次上下排列的换热与喷气风箱单元，该换热与喷气风箱单元的热交换管道(高温燃烧废气走管程，保护气体走壳程)对风箱体内的氮氢混合气体加热，通过正对带钢两侧的高速喷嘴向带钢两面喷吹高温氮氢混合气体，快速加热带钢，喷出的高温氮氢混合气体与低温带钢进行热交换，混合气体降低温度之后从布置在靠近带钢两侧边的循环风机抽回到炉内热交换器与其内部的走管程的燃烧废气再次进行热交换，再次提升氮氢混合气体的温度，而后从该喷气风箱单元内部再喷向带钢两面，如此循环往复。
在所述预热装置中：
所述预热设置换热与喷气风箱单元及直火燃烧废气二次燃烧室，所述换热与喷气风箱单元采用热交换管道(热交换器不是布置在炉外)，将直火燃烧废气二次燃烧室再次燃烧的燃烧废气加热风箱体内循环利用的氮氢保护气体，在循环风机的作用下加热后的氮氢保护气体高速喷射到带钢上下表面强制对流换热，实现快速高效预热带钢。
在直火燃烧废气二次燃烧室内还设置明火烧嘴，用于直火燃烧废气中未充分燃烧的燃气在直火燃烧废气二次燃烧室内进行富氧二次燃烧，且燃烧的火焰不会接触到带钢。
上下设置的风箱体之间设置与热交换管连通的废气二次混合室，在该废气二次混合室对废气温度进行均匀化处理，然后再进入下行的风箱体。
所述密封装置为氮气密封结构，设有氮气密封室，氮气密封室内都设有氮气注入管道口，通过向氮气密封室内通入密封氮气，维持相对高压，避免大量直火燃烧废气进入炉内换热与喷气风箱单元内部的穿带通道，从而可以避免直火燃烧废气过量氧化带钢表面。
所述预热炉的带钢入口处设密封装置，其内部也设置气体注入口，喷吹少量密封氮气或空气，其作用是避免直火燃烧废气溢出至炉外。
喷射辐射管预热装置
用于本发明各生产线的喷射辐射管预热装置包括：
辐射管加热炉，炉体上方设炉顶辊室，炉顶辊室内设置转向辊；
辐射管废气集气室，通过连接管道连接所述辐射管加热炉炉体；
预热炉，包括：
预热炉炉体，其上部侧壁设一连接孔，并通过连通管连通所述辐射管废气集气室；预热炉炉体顶端设与所述辐射管加热炉炉顶辊室对应、供带钢穿过的炉喉；预热炉炉体底部设带钢入口及入口密封装置和入口转向辊；预热炉炉体内上部设预热炉集气室；炉体内下部设一带穿带孔的下隔板，形成废气集气室，并通过一废气排出管道连接一废气风机，优选的，所述废气排出管道上设置控制阀；
若干换热与喷气风箱单元，沿炉体高度方向设置于所述预热炉炉体内预热炉集气室下方的两侧，中间形成供带钢穿过的穿带通道；每个换热与喷气风箱单元包括，
风箱体，其内竖直设置若干热交换管，风箱体相对所述穿带通道的一侧面设置若干喷嘴；上下设置的风箱体之间设置与热交换管连通的废气二次混合室；风箱体内通入保护气体，优选的，所述风箱体内通入氮氢保护气体；
循环风机，其进口管道的端口设置于所述穿带通道内，其出口管道的端口位于风箱体内；
可供带钢穿过的密封装置，分别设置于所述穿带通道的下端口及上、下隔板的穿带孔 处。
优选的，所述入口密封装置、可供带钢穿过的密封装置为氮气密封结构，采用氮气密封室，其上设有氮气注入管道。
本发明所述喷射辐射管预热装置，直接采用炉内热交换(热交换不是布置在炉外)加热循环利用的氮氢保护气体，利用加热的氮氢保护气体高速喷射到带钢上下表面强制对流换热实现快速高效预热带钢，此方法与传统的炉外热交换相比，炉体热量损失少，燃烧废气余热更充分、加热效率更高、加热速率更快；而且，辐射管燃烧废气从辐射管废气集气室通过连通管道进入预热炉集气室，然后从预热炉内的换热器室(换热器不是设置在炉外)从上向下通过，通过过程中走管程的燃烧废气与走壳程的氮氢保护气体在热交换器中进行充分的换热，加热氮氢保护气体，因此在预热炉内辐射管燃烧废气始终不与带钢直接接触，从而避免了带钢表面的氧化；另外，采用所述预热装置，带钢预热温度高，至少可以达到250℃及以上，比普通预热带钢温度至少高出50℃；如果喷射预热单元布置数量足够，经多级预热炉出来的辐射管燃烧废气温度通常可低于200℃，可以直接排放，根本无需追加投资进行燃烧废气余热的炉外二次利用。
喷气辐射复合加热装置
用于本发明各生产线的喷气辐射复合加热装置包括：
炉体，其内沿高度方向设置复合加热体；所述复合加热体，包括，
保温箱体，其壳体内壁设保温材料；保温箱体的一侧面中央设安装孔；
循环风机，设置于所述保温箱体安装孔处，其吸风口对应安装孔轴线，出风口设于机壳侧面；
缓冲腔体，设置于所述保温箱体内对应循环风机吸风口处，缓冲腔体背面设与循环风机吸风口对应的热风出口，缓冲腔体正面设热风进口；优选的，所述缓冲腔体与喷气风箱为一体结构；
两喷气风箱，竖直对称设置于所述保温箱体内缓冲腔体正面热风进口的两侧，形成供带钢穿过的穿带通道；位于该穿带通道两侧的两喷气风箱的一侧面沿高度方向间隔设置若干***流喷嘴，且，n***流喷嘴之间设置一间隙，n≥1；优选的，所述射流喷嘴直径为射流喷嘴到带钢的距离的1/10～1/5；更优选的，所述射流喷嘴采用圆孔结构；
若干辐射管，对称设置于所述两喷气风箱内，所述辐射管包括连接喷嘴的连接管段、自连接管段一端弯折延伸的辐射管段、自辐射管段一端延伸弯折形成的换热管段；所述辐射管段对应所述喷气风箱中n***流喷嘴之间设置的间隙，形成喷气与辐射交替结构；优选的，所述辐射管的辐射管段、连接管段、换热管段为平行设置。
优选的，所述喷气封箱为高温喷气风箱。优选地，所述高温喷气风箱中高温气体的温度在750℃以上，如为750～880℃。优选的，所述喷嘴为射流高速喷嘴。优选的，所述喷嘴出***流气体的速度不低于50m/s。
本发明所述喷气辐射复合加热装置采用复合加热技术，能够把高速高温喷气加热技术与辐射管加热技术能够有机的结合在一起，充分的发挥了高速高温喷气加热技术与辐射管加热技术的技术优势。通过优化设计辐射管的结构，将辐射管安装到高速喷气风箱内部把辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热，对于1mm的带钢平均加热速度最高不低于40℃/s，这样可以大大缩短加热炉的长度，对于一个年产量30万吨机组其加热段约2个pass，降低炉体的热惯性；
其次，由于燃气产生的热量被风箱中的循环气体(N2+H2)带走，这不仅可以降低辐射管的排烟温度，同等情况下可以降低辐射管的排烟温度约100℃，提高辐射管的热效率约5％，还可以降低辐射管的平均工作温度，延长辐射管的使用寿命；
再次，经过加热的循环气体温度较为均匀，因此加热过程中带钢宽度方向上的温度分布较为均匀，根据运行实际加热过程中带钢宽度方向上的均匀性控制在±5℃，从而实现机组的稳定运行。高速喷气和辐射复合加热技术将会显著提升现存机组的产能，解决产线上加热能力不足的问题。
本发明所述喷气辐射复合均热装置的辐射管既具有燃烧辐射功能(是指在两排喷嘴之间是辐射管的高温段)，又具有换热器功能，对循环气体进行加热，这样能够把辐射管内燃烧气体的热量通过强制换热迅速的转移到带钢上去，实现带钢的快速加热，可以大大缩短加热炉的长度，降低大型立式连续退火炉体的热惯性。
附图说明
图1为传统热镀锌(GI)生产线工位布置图；
图2为传统合金化热镀锌(GA)生产线工位布置图；
图3～10为本发明快速热镀锌带钢生产线实施例1～8的生产线工位布置图；
图11为本发明所述喷射直火预热装置实施例的结构示意图；
图12为本发明所述喷射直火预热装置实施例中预热炉的结构示意图；
图13为本发明所述喷气辐射复合加热/均热装置实施例的结构示意图1；
图14为本发明所述喷气辐射复合加热/均热装置实施例的结构示意图2；
图15为本发明所述喷气辐射复合加热/均热装置实施例中复合加热体的结构示意图；
图16为本发明所述喷气辐射复合加热/均热装置实施例中喷气风箱的局部立体图；
图17为本发明所述喷气辐射复合加热/均热装置实施例中辐射管的立体图。
图18～25为本发明快速热镀锌高强带钢生产线的实施例1～8的生产线工位布置图；
图26为本发明所述喷射辐射管预热装置实施例的结构示意图；
图27为本发明所述喷射辐射管预热装置实施例中预热炉的结构示意图；
图28～41为本发明快速热镀锌超高强带钢实施例1～14的生产线工位布置图；
图42为传统连退生产线工位布置示意图；
图43～71为本发明快速连退带钢生产线的实施例1～29的生产线工位布置示意图；
图72～78为本发明快速连退高强带钢的实施例1～7的生产线工位布置示意图；
图79～85为本发明快速连退超高强带钢生产线的实施例1～7的生产线工位布置图；
图86～93为本发明快速连退超高强带钢生产线实施例1～8的生产线工位布置示意图；
图94～111为本发明超短流程双用带钢生产线实施例1～18的生产线工位布置图；
图112～139为本发明超短流程超高强带钢生产线实施例1～28的生产线工位布置图；
图140～147为本发明超短流程热镀锌高强带钢生产线实施例1～8的生产线工位布置图；
图148～153为本发明柔性化的适合生产多种高强钢的冷轧带钢后处理生产线实施例1～6的生产线工位布置图；
图154～159为本发明柔性化的适合于生产多种超高强带钢的冷轧后处理生产线实施例1～6的生产线工位布置图；
图160～166为本发明柔性化的适合生产多种高强钢的冷轧带钢后处理线实施例1～7的生产线工位布置图；
图167～174为本发明柔性化的适合多种超高强带钢的生产线实施例1～8生产线工位布置图；
图175～186为本发明连退或热镀锌双用超高强带钢生产线实施例1～12的生产线工位布置图；
图187～198为本发明连退或热镀锌双用高强带钢生产线实施例1～12的生产线工位布置图。
具体实施方式
下面结合实施例和附图对本发明做进一步说明：需要说明的是，应用本发明思想可以衍生、拓展出多种生产线，本实施例仅给出一些实施方式，本发明的族群专利还会给出其它实施方式，即使是全部族群专利实施例也仅是给出了部分实施方式，按本发明所述的工位或段的选择、不选择所产生的各种组合，都在本发明的保护范围，按本发明思路衍生出的各种生产线也在本发明的保护范围之内。另外，对于常规工位，例如清洗工位包括碱液喷淋段、碱液刷洗段、电解清洗段、热水刷洗或冷水磨粒辊刷洗段和热水漂洗段，甚至简 化、组合采用高压水射流刷洗段、超声波清洗段、高压清洗段等清洗新技术设备，都认为是本发明的演生生产线，也在本发明的保护范围之内。再例如，精整工位包括切边、涂油等设备，也在本发明的保护范围之内。
快速热镀锌带钢生产线
参见图3，本发明所述的快速热镀锌带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图4，其所示为本发明实施例2，在实施例2中，所述的快速热镀锌带钢生产线，依次包括以下：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述喷气辐射复合加热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段都使用纵磁感应加热设备对带钢进行快速加热。
参见图5，其所示为本发明实施例3，在实施例3中，所述的快速热镀锌带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述喷射直火喷射预热段的特征在于利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段采用纵磁感应加热设备对带钢进行快速加热。
参见图6，其所示为本发明实施例4，在实施例4中，所述的快速热镀锌带钢生产线， 依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述喷气辐射复合加热段和均热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述再加热段和二次再加热段都采用纵磁感应加热设备对带钢进行快速加热。
参见图7，其所示为本发明实施例5，在实施例5中，所述的包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷射直火喷射预热段的特征在于利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段都采用纵磁感应加热设备对带钢进行快速加热。
参见图8，所述的快速合金化热镀锌带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷气辐射复合加热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段都采用纵磁感应加热设备对带钢进行快速加热。
参见图9，所述的快速合金化热镀锌带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷射直火喷射预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段都采用纵磁感应加热设备对带钢进行快速加热。
参见图10，其所示为本发明实施例6，在实施例6中，所述的快速合金化热镀锌带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷气辐射复合加热段和均热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段都使用纵磁感应加热设备对带钢进行快速加热。
优选的，所述中央连续后处理工位的气刀段后、镀后冷却段前还设置可选择的移动镀后快冷段，带钢从锌锅段热镀锌经气刀段控制镀层重量以后可以选择使用移动镀后快冷段进行镀后快冷，也可以不选择使用移动镀后快冷段进行自然冷却后再进行镀后冷却，实现热镀锌带钢的连续生产。
参见图11、图12，本发明所述的喷射直火预热装置，其包括：直火炉1、预热炉2；其中，
所述直火炉1包括：
炉壳11，其上下端分别设置炉顶辊室101、炉底辊室102；炉顶辊室101、炉底辊室102内分别设置转向辊12、12’；炉壳11内沿高度方向设置若干直火加热区111，直火加热区111内设置于若干直火烧嘴；炉壳11上部侧壁设两个通孔，且左右对称设置；
所述预热炉2包括：
炉体21，其上部侧壁设两个连接孔，且左右对称设置，并分别通过连通管22连接所述直火炉1炉壳11上部的通孔；炉体21顶端设与所述直火炉1炉顶辊室101对应、供带钢穿过的炉喉211；炉体21底部设带钢入口及相应的密封装置212和转向辊23；炉体21内上部设一带穿带孔的上隔板213，形成直火废气上集气室201；直火废气上集气室201下方设直火燃烧废气二次燃烧室202，直火燃烧废气二次燃烧室202内设至少一只明火烧嘴24；炉体21内下部设一带穿带孔的下隔板214，形成直火废气下集气室203，并通过一废气排出管道215连接一废气风机25；
若干换热与喷气风箱单元26，沿炉体21高度方向设置于所述炉体21内直火燃烧废气二次燃烧室202下方的两侧，中间形成供带钢穿过的穿带通道204；每个换热与喷气风箱单元26包括，
风箱体261，其内竖直设置若干热交换管262，风箱体261相对所述穿带通道204的一侧面设置若干喷嘴263；上下设置的风箱体261之间设置与热交换管262连通的废气二次混合室205；风箱体261内通入氮氢保护气体；
循环风机264，其进口管道的端口设置于所述穿带通道204内，其出口管道的端口位于风箱体261内；
若干可供带钢穿过的密封装置27、27’、27”，分别设置于所述穿带通道204的上下端口处及上、下隔板213、214的穿带孔处。
优选的，所述直火燃烧废气二次燃烧室202内还设置燃烧废气测温计28。
优选的，所述密封装置27、27’、27”为氮气密封结构，采用氮气密封室，其上设有氮气注入管道。
优选的，所述废气排出管道215上设置控制阀216。
带钢100经直火炉前转向辊转向向上运行，先经过预热炉入口密封装置密封后进入预热炉2进行预热，接着进入直火炉1的炉顶辊室，经转向辊转向后进入直火炉1进行直火加热，然后进入直火炉1的炉底辊室，经转向辊转向后继续运行。
直火燃烧废气经热交换管道将氮氢保护气体加热后废气温度下降(氮氢保护气体在循环风机的作用下喷吹到带钢上下表面预热带钢)，降温后的氮氢保护气体在预热炉的工作侧(WS侧)和驱动侧(DS侧)两侧被循环风机264再抽吸到风箱内与热交换管道进行换热；直火燃烧废气从上而下依次通过换热与喷气风箱单元，在变频废气风机25的抽吸下，通过废气排出管道215先经过余热锅炉400进行燃烧废气余热的炉外二次利用，再进入烟囱500内最终排放。
参见图13～图17，本发明所述的喷气辐射复合加热/均热装置，其包括：
炉体4，其内沿高度方向设置复合加热体5；所述复合加热体5包括，
保温箱体51，其壳体内壁设保温材料；保温箱体51的一侧面中央设安装孔；
循环风机52，设置于所述保温箱体51安装孔处，其吸风口521对应安装孔轴线，出风口522设于机壳侧面；
缓冲腔体53，设置于所述保温箱体51内对应循环风机52吸风口处，缓冲腔体53背面设与循环风机52吸风口对应的热风出口531，缓冲腔体正面设热风进口532；
两喷气风箱54、54’，竖直对称设置于所述保温箱体51内缓冲腔体53正面热风进口的两侧，形成供带钢100穿过的穿带通道200；位于该穿带通道100两侧的两喷气风箱54、54’的一侧面沿高度方向间隔设置若干***流喷嘴55、55’，且，n***流喷嘴之间设置一间隙300，n≥1；
若干辐射管56、56’，对称设置于所述两喷气风箱54、54’内，所述辐射管56(辐射 管56为例，下同)包括连接喷嘴的连接管段561、自连接管段561一端弯折延伸的辐射管段562、自辐射管段562一端延伸弯折形成的换热管段563；所述辐射管段562对应所述喷气风箱54中n***流喷嘴之间设置的间隙300，形成喷气与辐射交替结构。
优选的，所述缓冲腔体与喷气风箱为一体结构。
优选的，所述射流喷嘴直径为射流喷嘴到带钢的距离的1/10～1/5。
优选的，所述射流喷嘴采用圆孔结构。
优选的，所述辐射管采用空间四行程结构，形成四段平行设置的管段，其中，一管段为辐射管段，其余为连接管段、换热管段。
实例1
一种热镀锌带钢的制备，其生产线布置如图3所示，基板主要化学成分(mass％)为0.1％C-0.50％Si-1.95％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到360℃，再直火加热到680℃，然后辐射管加热到800℃，在800℃下辐射管均热50秒，缓冷到670℃，高氢冷却到470℃，通过再加热段(再加热功能不需投入)、均衡保温段和二次再加热段(二次再加热功能不需投入)，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为365MPa，抗拉强度685MPa，断裂延伸率26％。
实例2
一种热镀锌带钢的制备，其生产线布置如图4所示，基板主要化学成分(mass％)为0.18％C-1.7％Si-2.3％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷气辐射复合加热到670℃，再辐射管加热到850℃，在850℃下辐射管均热80秒，缓冷到675℃，高氢冷却到230℃，再加热到400℃，在400℃均衡保温，然后二次再加热到455℃后浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为726MPa，抗拉强度1058MPa，断裂延伸率19％。
实例3
一种热镀锌带钢的制备，其生产线布置如图5所示，基板主要化学成分(mass％)为0.11％C-0.46％Si-2.0％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到355℃，再直火加热到675℃，然后辐射管加热到795℃，在795℃下喷气辐射复合均热60秒，缓冷到675℃，高氢冷却到475℃，通过再加热段(再加热功能不需投入)、均衡保 温段和二次再加热段(二次再加热功能不需投入)，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为398MPa，抗拉强度696MPa，断裂延伸率28％。
实例4
一种热镀锌带钢的制备，其生产线布置如图6所示，基板主要化学成分(mass％)为0.17％C-1.75％Si-2.2％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷气辐射复合加热到705℃，接着辐射管加热到855℃，在855℃下喷气辐射复合均热80秒，缓冷到670℃，高氢冷却到230℃，再加热到395℃，在395℃均衡保温，然后二次再加热到457℃后经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为715MPa，抗拉强度1036MPa，断裂延伸率21％。
实例5
一种热镀锌带钢的制备，其生产线布置如图7所示，基板主要化学成分(mass％)为0.08％C-0.18％Si-1.96％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到350℃，再直火加热到670℃，然后辐射管加热到810℃，在810℃下辐射管均热60秒，缓冷到670℃，高氢冷却到465℃，通过再加热段(再加热功能不需投入)、均衡保温段和二次再加热段(二次再加热功能不需投入)，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后合金化加热到500℃，在500℃下合金化均热18秒，然后进行镀后冷却，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为550MPa，抗拉强度837MPa，断裂延伸率19％。
实例6
一种热镀锌带钢的制备，其生产线布置如图10所示，基板主要化学成分(mass％)为0.165％C-1.8％Si-2.25％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷气辐射复合加热到670℃，再辐射管加热到855℃，在855℃下喷气辐射复合均热90秒，缓冷到670℃，高氢冷却到220℃，接着再加热到410℃，在410℃均衡保温，然后二次再加热到460℃后经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后合金化加热到515℃，在510℃下合金化均热22秒，然后进行镀后冷却，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为732MPa，抗拉强度1028MPa，断裂延伸率18％。
快速热镀锌高强带钢生产线
参见图18，其所示为本发明实施例1，在实施例1中，本发明所述的快速热镀纯锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述的喷气辐射复合加热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体或者全氢气体，再由氮氢保护气体或者全氢气体喷射到带钢上下表面实现强制对流换热；所述横磁感应加热段用于高温带钢的温度进一步快速提升；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图19，其所示为本发明实施例2，在实施例2中，所述快速热镀纯锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述喷射辐射管预热段利用辐射管加热段和辐射管均热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述横磁感应加热段用于高温带钢的温度进一步快速提升；
所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图20，本发明实施例3，所述快速热镀纯锌带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
所述的喷气辐射复合加热装置利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体或者全氢气体，再由氮氢保护气体或者全氢气体喷射到带钢上下表面实现强制对流换热；所述横磁感应加热段用于高温带钢的温度进一步快速提升；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图21，本发明实施例4，所述快速热镀纯锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、 锌锅段、气刀段、镀后冷却段和最终水冷段。
所述喷射辐射管预热装置利用辐射管加热段和辐射管均热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述横磁感应加热段用于高温带钢的温度进一步快速提升；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图22，其所示为本发明实施例5，在实施例5中，热镀锌为合金化热镀锌；所述快速合金化热镀锌带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷气辐射复合加热装置利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体或者全氢气体，再由氮氢保护气体或者全氢气体喷射到带钢上下表面实现强制对流换热；所述横磁感应加热段用于高温带钢的温度进一步快速提升；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图23，其所示为本发明实施例6，在实施例6中，热镀锌为合金化热镀锌；所述快速合金化热镀锌带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷射辐射管预热段利用辐射管加热段和辐射管均热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述横磁感应加热段用于高温带钢的温度进一步快速提升；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图24，本发明实施例7，热镀锌为合金化热镀锌；所述快速合金化热镀锌带钢生产线，其依次包括以下工位备：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷气辐射复合加热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循 环利用的氮氢保护气体或者全氢气体，再由氮氢保护气体或者全氢气体喷射到带钢上下表面实现强制对流换热。
所述横磁感应加热段用于高温带钢的温度进一步快速提升；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图25，本发明实施例8，热镀锌为合金化热镀锌；所述快速合金化热镀锌带钢生产线，其依次包括以下工位备：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
所述喷射辐射管预热段利用辐射管加热段和辐射管均热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述横磁感应加热段用于高温带钢的温度进一步快速提升；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
优选的，在气刀段后、镀后冷却段前设置可选择的移动镀后快冷段设备；带钢从锌锅段热镀锌经气刀段控制镀层重量以后可以选择使用移动镀后快冷段进行镀后快冷，也可以不选择使用移动镀后快冷段进行自然冷却后再进行镀后冷却，实现热镀锌带钢的连续生产。
参见图26、图27，本发明所述的喷射辐射管预热装置，其包括：
辐射管加热炉1，炉体上方设炉顶辊室101，炉顶辊室101内设置转向辊102；
辐射管废气集气室2，通过连接管道21连接所述辐射管加热炉1炉体；
预热炉3，包括：
预热炉炉体31，其上部侧壁设一连接孔，并通过连通管32连通所述辐射管废气集气室2；预热炉炉体31顶端设与所述辐射管加热炉1炉顶辊室101对应、供带钢穿过的炉喉311；预热炉炉体31底部设带钢入口及入口密封装置33和入口转向辊；预热炉炉体31内上部设预热炉集气室312；预热炉炉体31内下部设一带穿带孔的下隔板313，形成下部废气集气室314，并通过一废气排出管道34连接一废气风机35，自烟囱500排出；
若干换热与喷气风箱单元36，沿预热炉炉体31高度方向设置于所述预热炉炉体31内预热炉集气室312下方的两侧，中间形成供带钢穿过的穿带通道315；每个换热与喷气风箱单元36包括，
风箱体361，其内竖直设置若干热交换管362，风箱体362相对所述穿带通道315的一侧面设置若干喷嘴363；上下设置的风箱体361之间设置与热交换管362连通的废气二次混合室365；风箱体361内通入氮氢保护气体；
循环风机364，其进口管道的端口设置于所述穿带通道315内，其出口管道的端口位于风箱体361内；
可供带钢穿过的密封装置37，设置于所述穿带通道315的下端口及下隔板313的穿带孔处。
优选的，所述入口密封装置33、密封装置37为氮气密封结构，采用氮气密封室，其上设有氮气注入管道。
优选的，所述废气排出管道34上设置控制阀38。
带钢100经入口转向辊转向后向上运行，经入口密封装置密封后进入预热炉3进行预热处理，然后进入炉顶辊室，经转向辊转向后进入辐射管加热炉1；辐射管加热燃烧废气进入辐射管废气集气室2，通过连通管道32与预热炉1的预热炉集气室312连通，预热炉集气室312属密闭集气室，确保其内废气与带钢100不接触；辐射管燃烧废气在预热炉集气室积聚，辐射管燃烧废气先用于预热其自身燃烧所需的助燃空气。
在废气风机的抽力作用下，预热炉集气室312内的高温辐射管燃烧废气源源不断地通过逐个串联的喷气风箱单元，喷气风箱单元内部设置有作为换热器的热交换管(管程为高温燃烧废气，壳程为氮氢混合气体)；辐射管燃烧废气经换热器将氮氢保护气体加热，加热的氮氢保护气体在循环风机的作用下喷吹到带钢上下表面预热带钢。
辐射管燃烧废气从热交换管的内部从上向下流过，流动过程中进行热交换加热循环喷射的氮氢保护气体，然后进入喷气风箱单元之间的废气二次混合室365，进行二次混合，对废气温度进行均匀化处理，然后再进入下行的炉内换热与喷气风箱单元，直至到达底部氮气密封装置，最后进入废气集气室314。
氮氢保护气体从热交换管束间通过，被加热后在循环风机的作用下，不停地从喷嘴喷射到带钢的上下表面预热带钢。循环风机的吸气口由炉内管道连接到喷气风箱单元的DS侧和WS侧，在循环风机的作用下，氮氢混合气体喷射到带钢表面后，从两侧被抽出，再由循环风机经热交换器喷射到带钢上下表面，实现氮氢混合气体循环喷射加热带钢。
实例1
生产一种热镀锌高强带钢，其生产线布置如图3所示，基板主要化学成分(mass％)为0.12％C-0.41％Si-1.90％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷气辐射复合加热到500℃，再辐射管加热到700℃，然后横磁感应加热到810℃，在810℃下辐射管均热40秒，缓冷到670℃，高氢冷却到460℃，从再加热段(再加热功能可以不投入)、均衡保温段和二次再加热段(二次再加热功能可以不投入)通过，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，接着最终水冷至室温，平整后进入出***套， 然后卷取，完成生产。最终产品带钢屈服强度为355MPa，抗拉强度665MPa，断裂延伸率25％。
实例2
生产一种热镀锌高强带钢，其生产线布置如图4所示，基板主要化学成分(mass％)为0.18％C-1.80％Si-2.2％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷射辐射管预热到350℃，再辐射管加热到810℃，接着横磁感应加热到910℃，在910℃下辐射管均热60秒，缓冷到670℃，高氢冷却到230℃，再加热到400℃，在400℃均衡保温，然后二次再加热到458℃后经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为705MPa，抗拉强度1019MPa，断裂延伸率22％。
实例3
生产一种热镀锌高强带钢，其生产线布置如图7所示，基板主要化学成分(mass％)为0.085％C-0.16％Si-1.90％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷气辐射复合加热到550℃，再辐射管加热到750℃，然后横磁感应加热到820℃，在820℃下辐射管均热60秒，缓冷到670℃，高氢冷却到465℃，从再加热段(再加热功能可以不投入)、均衡保温段和二次再加热段(二次再加热功能可以不投入)通过，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后合金化加热到500℃，在500℃下合金化均热18秒，然后进行镀后冷却，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为565MPa，抗拉强度826MPa，断裂延伸率18％。
实例4
生产一种热镀锌高强带钢，其生产线布置如图8所示，基板主要化学成分(mass％)为0.18％C-1.75％Si-2.65％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射辐射管预热到275℃，辐射管加热到750℃，再横磁感应加热到850℃，在850℃下辐射管均热60秒，缓冷到670℃，高氢冷却到260℃后，再加热到420℃后，在420℃下均衡保温，实现带钢中碳元素的再分配，稳定带钢中的残余奥氏体组织，然后二次再加热到460℃，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉加热到510℃，在合金化均热炉500℃保温18秒，再经镀后冷却设备冷却到140℃左右，再经最终水冷至45℃以下，然后进行平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为1088MPa，抗拉强度1203MPa，断裂延伸率15％。
快速热镀锌超高强带钢生产线
参见图28，其所示为本发明实施例1，在实施例1中本发明所述的快速热镀纯锌超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段，
所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图29，其所示为本发明实施例2，在实施例2中，所述快速热镀纯锌超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、气雾冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；
所述喷射直火预热段的特征在于利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图30，其所示为本发明实施例3，在实施例3中，所述快速热镀纯锌超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；
所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图31，其所示为本发明实施例4，在实施例4中，所述快速热镀纯锌超高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、气雾冷却段、水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；
所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
参见图32～图34，作为优选，本发明实施例5～7是在实施例2～4的基础上，在酸洗段之后增加闪镀铁或闪镀镍段，对带钢进行闪镀后再进行后续处理。
优选的，气刀段设备后、镀后冷却段前设置可选择的移动镀后快冷段，带钢从锌锅段热镀锌经气刀段设备控制镀层重量以后可以选择使用移动镀后快冷段进行镀后快冷，也可以不选择使用移动镀后快冷段进行自然冷却后再进行镀后冷却，实现热镀锌带钢的连续生产。
参见图35，其所示为本发明实施例8，在实施例8中，所述快速热镀锌超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
参见图36，其所示为本发明实施例9，在实施例9中，所述快速热镀锌超高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、气雾冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段设备。
参见图37，其所示为本发明实施例10，在实施例10中，所述快速热镀锌超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段 和最终水冷段。
参见图38，其所示为本发明实施例11，在实施例11中，所述快速热镀锌超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、气雾冷却段、水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
参见图39～图41，作为优选，本发明实施例12～14是在实施例9～11的基础上，在酸洗段之后增加闪镀铁或闪镀镍段，对带钢进行闪镀后再进行后续处理。
优选的，在气刀段后，与合金化加热段并列设置可选择的移动镀后快冷段设备，带钢从锌锅段热镀锌经气刀段控制镀层重量以后如果生产热镀纯锌产品，该移动镀后快冷段切换到在线使用，将合金化加热段设备离线；如果生产合金化热镀锌产品，该移动镀后快冷段设备切换离线，将合金化加热段设备切换到在线使用。
优选的，所述辐射管均热段更换为喷气辐射复合均热段，实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
优选的，在入***套工位之前设置清洗工位。
优选的，在入***套工位的前后都设置清洗工位。
优选的，在平整工位前，中央连续后处理工位之后，设置中央活套工位。
优选的，在卷取工位与出***套工位之间设置精整工位，带钢精整后再进行卷取。
优选的，在平整工位与出***套工位之间还设置拉矫工位，带钢可以选择进行拉矫处理再进入出***套。
优选的，在平整工位与出***套工位之间还设置钝化或耐指纹等表面后处理工位，带钢可以选择进行钝化或耐指纹等表面处理再进入出***套。
优选的，在平整工位与出***套工位之间同时设置拉矫工位设备和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面处理再进入出***套。
实例1
一种热镀锌超高强带钢的制备，其产线如图3所示，其基板主要化学成分(mass％)为0.16％C-1.8％Si-2.3％Mn，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到365℃，再直火加热到715℃，接着辐射管加热到815℃，接着横磁感应加热到915℃，在915℃下辐射管均热60秒，缓冷到675℃，高氢冷却到230℃，再加热到420℃，在420℃ 均衡保温，然后二次再加热到460℃后经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却到150℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为702MPa，抗拉强度1051MPa，断裂延伸率22％。
实例2
一种热镀锌超高强带钢的制备，其产线如图4所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到355℃，再直火加热到705℃，接着辐射管加热到805℃，接着横磁感应加热到905℃，在905℃下辐射管均热65秒，缓冷到675℃，接着气雾冷却到50℃以下进行酸洗，然后再加热到390℃，在390℃下均衡保温后二次再加热到460℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却到150℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例3
一种热镀锌超高强带钢的制备，其产线如图5所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到357℃，再直火加热到720℃，接着辐射管加热到820℃，接着横磁感应加热到910℃，在910℃下辐射管均热56秒，缓冷到670℃，接着水淬冷却至室温，然后进行酸洗，接着再加热到400℃，在400℃下均衡保温后二次再加热到455℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却到150℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例4
一种热镀锌超高强带钢的制备，其产线如图6所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到353℃，再直火加热到700℃，接着辐射管加热到800℃，接着横磁感应加热到900℃，在900℃下辐射管均热68秒，缓冷到660℃，接着先气雾冷却到410℃，然后水淬冷却至室温，然后进行酸洗，然后再加热到385℃，在385℃下均衡保温后二次再加热到455℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却到150℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例5
一种热镀锌超高强带钢的制备，其产线如图7所示，一种高强钢制备，基板主要化学成分(mass％)为0.08％C-0.35％Si-2.1％Mn，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到360℃，再直火加热到720℃，接着辐射管加热到820℃，接着横磁感应 加热到920℃，在920℃下辐射管均热40秒，缓冷到750℃，先气雾冷却到500℃，再水淬冷却到50℃左右，接着酸洗，再闪镀镍，然后再加热到410℃，在410℃均衡保温，接着二次再加热到455℃后经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却至150℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为951MPa，抗拉强度1239MPa，断裂延伸率8％。
实例6
一种热镀锌超高强带钢的制备，其产线如图8所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到357℃，再直火加热到720℃，接着辐射管加热到820℃，接着横磁感应加热到910℃，在910℃下辐射管均热56秒，缓冷到670℃，接着水淬冷却至室温，然后进行酸洗，再进行闪镀镍，接着再加热到400℃，在400℃下均衡保温后二次再加热到455℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却到150℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例7
一种热镀锌超高强带钢的制备，其产线如图9所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到353℃，再直火加热到700℃，接着辐射管加热到800℃，接着横磁感应加热到900℃，在900℃下辐射管均热68秒，缓冷到660℃，接着先气雾冷却到410℃，然后水淬冷却至室温，然后进行酸洗，接着闪镀铁，然后再加热到385℃，在385℃下均衡保温后二次再加热到455℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却到150℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例8
一种热镀锌超高强带钢的制备，其产线如图10所示，基板主要化学成分(mass％)为0.15％C-1.72％Si-2.28％Mn，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到355℃，再直火加热到720℃，接着辐射管加热到820℃，接着横磁感应加热到920℃，在920℃下辐射管均热80秒，缓冷到670℃，高氢冷却到260℃，再加热到410℃，在410℃均衡保温，然后二次再加热到455℃后经过炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进入合金化加热炉加热到510℃，接着在505℃下合金化均热20秒，接着进行镀后冷却至200℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为693MPa，抗拉强度1018MPa，断裂延伸率21.5％。
实例9
一种热镀锌超高强带钢的制备，其产线如图11所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到352℃，再直火加热到705℃，接着辐射管加热到805℃，接着横磁感应加热到905℃，在905℃下辐射管均热65秒，缓冷到675℃，接着气雾冷却到50℃以下进行酸洗，然后再加热到390℃，在390℃下均衡保温后二次再加热到460℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进入合金化加热段加热到510℃，然后在510℃下合金化均热20秒接着镀后冷却到200℃以下，然后最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例10
一种热镀锌超高强带钢的制备，其产线如图12所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到357℃，再直火加热到720℃，接着辐射管加热到820℃，接着横磁感应加热到910℃，在910℃下辐射管均热56秒，缓冷到670℃，接着水淬冷却至室温，然后进行酸洗，接着再加热到400℃，在400℃下均衡保温后二次再加热到460℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进入合金化加热段加热到515℃，然后在510℃下合金化均热18秒进行镀后冷却到200℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例11
一种热镀锌超高强带钢的制备，其产线如图13所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到363℃，再直火加热到700℃，接着辐射管加热到800℃，接着横磁感应加热到900℃，在900℃下辐射管均热68秒，缓冷到660℃，接着先气雾冷却到410℃，然后水淬冷却至室温，然后进行酸洗，然后再加热到385℃，在385℃下均衡保温后二次再加热到460℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进入合金化加热段加热到520℃，然后在515℃下合金化均热16秒进行镀后冷却到200℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例12
一种热镀锌超高强带钢的制备，其产线如图14所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到366℃，再直火加热到720℃，接着辐射管加热到820℃，接着横磁感应加热到920℃，在920℃下辐射管均热40秒，缓冷到750℃，先气雾冷却到500℃，再水淬冷却到50℃左右，接着酸洗，再闪镀镍，然后再加热到410℃，在410℃均衡保温， 接着二次再加热到465℃后经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进入合金化加热段加热到500℃，然后在500℃下合金化均热25秒进行镀后冷却到200℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例13
一种热镀锌超高强带钢的制备，其产线如图15所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到357℃，再直火加热到720℃，接着辐射管加热到820℃，接着横磁感应加热到910℃，在910℃下辐射管均热56秒，缓冷到670℃，接着水淬冷却至室温，然后进行酸洗，再进行闪镀镍，接着再加热到400℃，在400℃下均衡保温后二次再加热到460℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进入合金化加热段加热到530℃，然后在520℃下合金化均热15秒进行镀后冷却到200℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
实例14
一种热镀锌超高强带钢的制备，其产线如图16所示，带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到353℃，再直火加热到700℃，接着辐射管加热到800℃，接着横磁感应加热到900℃，在900℃下辐射管均热68秒，缓冷到660℃，接着先气雾冷却到410℃，然后水淬冷却至室温，然后进行酸洗，接着闪镀铁，然后再加热到385℃，在385℃下均衡保温后二次再加热到465℃，经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后合金化加热段加热到525℃，然后在520℃下合金化均热18秒进行镀后冷却到200℃以下，接着最终水冷至室温，平整后进入出***套，然后卷取，完成生产。
快速退火带钢生产线
参见图43～图45，其所示为本发明实施例1～3，本发明所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷射直火预热装置；
所述加热段采用直火加热段；
所述均热段采用辐射管均热；
所述快速冷却段采用高氢冷却、或气雾冷却或水淬冷却。
本发明实施例1～3实现了在一条生产线同时采用喷射直火预热装置和高氢冷却或气雾冷却或水淬冷却，进行快速加热、快速冷却处理，实现超高强带钢的连续生产。
参见图46，其所示为本发明实施例4，在实施例4中，本发明所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、高氢冷却段和水淬冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷射直火预热装置；
所述加热段采用直火加热段；
所述快速冷却段采用高氢冷却与气雾冷却并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走气雾冷却段进行气雾冷却；
实施例4的生产线同时采用喷射直火预热装置、高氢冷却和气雾冷却，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图47，本发明实施例5，所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷射直火预热装置；
所述加热段采用直火加热段；
所述快速冷却段采用高氢冷却与水淬冷却并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走水淬冷却段进行水淬冷却。
本发明实施例5所述的生产线同时采用喷射直火预热装置、高氢冷却和水淬冷却，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图48，其所示为本发明实施例6，在实施例6中，本发明所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷射直火预热装置；
所述加热段采用直火加热段；
所述快速冷却段采用气雾冷却与水淬冷却并联且气雾冷却与水淬冷却之间设连接通道；带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却；
本发明实施例6的生产线同时采用喷射直火预热装置、气雾冷却段和水淬冷却段，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图49，本发明实施例7，所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷射直火预热装置；
所述加热段采用直火加热段；
所述快速冷却段采用高氢冷却与气雾冷却、水淬冷却并联布置，且，气雾冷却与水淬冷却之间设连接通道。
所述气雾冷却段和水淬冷却段串联布置，带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却；所述高氢冷却段与(气雾冷却段+水淬冷却段)并联布置，带钢可以选择走高氢冷却段，也可以选择走气雾冷却+水淬冷却段进行快速冷却处理。
实施例7所述生产线同时采用喷射直火预热装置、高氢冷却段和(气雾冷却段+水淬冷却段)，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图50～图52，其所示为本发明实施例8～10，所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷气辐射复合加热装置；
所述加热段采用辐射管加热段；
所述快速冷却段采用高氢冷却、或气雾冷却、或水淬冷却；
所述均热段采用辐射管均热。
本发明实施例8～10所述生产线同时采用喷气辐射复合加热装置和高氢冷却、或气雾冷却或水淬冷却中的一种快速冷却方式，进行快速加热、快速冷却处理，实现超高强带钢的连续生产。
参见图53，其所示为本发明实施例11，其在实施例8的基础上，所述快速冷却段采用高氢冷却段和气雾冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走气雾冷却段进行气雾冷却。
实施例11的生产线同时采用喷气辐射复合加热装置、高氢冷却和气雾冷却方式，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图54，其所示为本发明实施例12，其在实施例8的基础上，所述快速冷却段采用 高氢冷却段和水淬冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走水淬冷却段进行水淬冷却。
实施例12的生产线同时采用喷气辐射复合加热装置、高氢冷却和水淬冷却方式，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图55，其所示为本发明实施例13，所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷气辐射复合加热装置；
所述加热段采用辐射管加热段；
所述快速冷却段采用气雾冷却与水淬冷却并联布置，且气雾冷却与水淬冷却之间设连接通道，形成所述气雾冷却段和水淬冷却段串联布置，带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却。
实施例13的生产线同时采用喷气辐射复合加热装置、气雾冷却段和水淬冷却段，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图56，其所示为本发明实施例14，所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷气辐射复合加热装置；
所述加热段采用辐射管加热段；
所述快速冷却段采用高氢冷却与气雾冷却、水淬冷却并联布置，且气雾冷却与水淬冷却之间设连接通道，形成所述气雾冷却段和水淬冷却段串联布置。
带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却；所述高氢冷却段与(气雾冷却段+水淬冷却段)并联布置，带钢可以选择走高氢冷却段，也可以选择走气雾冷却+水淬冷却段进行快速冷却处理。
实施例14的生产线同时采用喷气辐射复合加热装置、高氢冷却段和(气雾冷却段+水淬冷却段)，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图57～图59，其所示为本发明实施例15～17，所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、快速冷却段、 再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷射直火预热装置；
所述加热段采用直火加热段；
所述均热段采用喷气辐射复合加热装置均热；
所述快速冷却段采用高氢冷却、或气雾冷却或水淬冷却。
实施例15～17的生产线同时采用喷射直火预热装置和高氢冷却或气雾冷却或水淬冷却中的一种快速冷却方式，进行快速加热、快速冷却处理，并采用喷气辐射复合加热装置进行均热，实现超高强带钢的连续生产。
参见图60、图61，其所示为本发明实施例18、19，其是在实施例15的基础上，所述快速冷却段采用高氢冷却与气雾冷却或水淬冷却并联布置。
所述高氢冷却段与气雾冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走气雾冷却段进行气雾冷却。或，
所述高氢冷却段与水淬冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走水淬冷却段进行水淬冷却。
参见图62，其所示为本发明实施例20，所述快速退火带钢生产线依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷射直火预热装置；
所述加热段采用直火加热段；
所述均热段采用喷气辐射复合加热装置均热；
所述快速冷却段采用气雾冷却与水淬冷却并联布置且气雾冷却与水淬冷却之间设连接通道，形成气雾冷却段和水淬冷却段串联布置，带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却。
实施例20的生产线同时采用喷射直火预热装置、气雾冷却段和水淬冷却段设备，进行快速加热、可选择的快速冷却处理，并采用喷气辐射复合均热段进行均热，实现超高强带钢的连续生产。
参见图63，其所示为本发明实施例21，所述快速退火带钢生产线依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷射直火预热装置；
所述加热段采用直火加热段；
所述均热段采用喷气辐射复合加热装置均热；
所述快速冷却段采用高氢冷却与气雾冷却、水淬冷却并联布置，且气雾冷却与水淬冷却之间设连接通道，形成气雾冷却段和水淬冷却段串联布置；带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却；所述高氢冷却段与(气雾冷却段+水淬冷却段)并联布置，带钢可以选择走高氢冷却段，也可以选择走气雾冷却+水淬冷却段进行快速冷却处理；
实施例21的生产线同时采用喷射直火预热装置、高氢冷却段和(气雾冷却段+水淬冷却段)，进行快速加热、可选择的快速冷却处理，并采用喷气辐射复合均热装置进行均热，实现超高强带钢的连续生产。
参见图64～图66，其所示为本发明实施例22～24，所述快速退火带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷气辐射复合加热装置；
所述加热段采用辐射管加热段；
所述快速冷却段采用高氢冷却、或气雾冷却或水淬冷却；
所述均热段采用喷气辐射复合加热装置均热。
实施例22～24的生产线同时采用喷气辐射复合加热装置和高氢冷却或气雾冷却或水淬冷却中的一种快速冷却方式，进行快速加热、快速冷却处理，并采用喷气辐射复合均热装置进行均热，实现超高强带钢的连续生产。
参见图67、图68，其所示为本发明实施例25、26，其是在实施例22的基础上，所述快速冷却段采用高氢冷却与气雾冷却或水淬冷却并联布置。
所述高氢冷却段与气雾冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走气雾冷却段进行气雾冷却。或，
所述高氢冷却段与水淬冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走水淬冷却段进行水淬冷却。
参见图69，本发明实施例27，所述快速退火带钢生产线依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述预热段采用喷气辐射复合加热装置；
所述加热段采用辐射管加热段；
所述均热段采用喷气辐射复合加热装置均热；
所述快速冷却段采用气雾冷却与水淬冷却并联布置，且气雾冷却与水淬冷却之间设连接通道，形成所述气雾冷却段和水淬冷却段串联布置；带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却。
实施例27的生产线同时采用喷气辐射复合加热装置、气雾冷却和水淬冷却，进行快速加热、可选择的快速冷却处理，并采用喷气辐射复合均热装置进行均热，实现超高强带钢的连续生产。
参见图70，本发明实施例28，其是在实施例27的基础上，所述快速冷却段采用高氢冷却与气雾冷却、水淬冷却并联布置，且气雾冷却与水淬冷却之间设连接通道，形成气雾冷却段和水淬冷却段串联布置；带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却；所述高氢冷却段与(气雾冷却段+水淬冷却段)并联布置，带钢可以选择走高氢冷却段，也可以选择走气雾冷却+水淬冷却段进行快速冷却处理。
实施例28的生产线同时采用喷气辐射复合加热装置、高氢冷却段和(气雾冷却段+水淬冷却段)，进行快速加热、可选择的快速冷却处理，并采用喷气辐射复合加热装置进行均热，实现超高强带钢的连续生产。
参见图71，本发明实施例29，其是在实施例1的基础上，在最终水冷段后设置可选择的酸洗段，带钢可以选择经过酸洗段，也可以旁通跳过酸洗段。
实例1
基板主要化学成分(mass％)为：0.07％C-0.01％Si-0.8％Mn的带钢开卷、焊接、清洗后，喷射直火预热到358℃，接着直火加热到650℃，然后辐射管加热到790℃，在790℃下辐射管均热50秒，缓冷到670℃，高氢冷却到250℃，进行过时效处理(再加热不需投入)，最终喷气冷却到140℃左右最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为502MPa，抗拉强度613MPa，断裂延伸率16％。
实例2
基板主要化学成分(mass％)为：0.06％C-0.01％Si-0.75％Mn的带钢开卷、焊接、清洗后，喷射直火预热到351℃，接着直火加热到650℃，然后辐射管加热到790℃，在790℃下辐射管均热50秒，缓冷到670℃，气雾冷却到270℃，接着进行过时效处理(再加热不需投入)，最终喷气冷却到140℃左右最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为536MPa，抗拉强度628MPa，断裂延伸率15％。
实例3
基板主要化学成分(mass％)为：0.06％C-0.008％Si-0.7％Mn的带钢开卷、焊接、清洗后，喷射直火预热到360℃，接着直火加热到660℃，然后辐射管加热到790℃，在790℃下辐射管均热50秒，缓冷到670℃，水淬冷却到50℃左右，然后进入过时效段进行加热到230℃进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为567MPa，抗拉强度689MPa，断裂延伸率13％。
实例4
基板主要化学成分(mass％)为：0.065％C-0.009％Si-0.77％Mn的带钢开卷、焊接、清洗后，喷射直火预热到355℃，接着直火加热到650℃，然后辐射管加热到785℃，在785℃下辐射管均热40秒，缓冷到675℃，先气雾冷却到500℃，再水淬冷却到50℃左右，然后使用纵磁感应加热器再加热到230℃进入过时效段进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为537MPa，抗拉强度663MPa，断裂延伸率15％。
实例5
基板主要化学成分(mass％)为：0.095％C-0.17％Si-2.0％Mn的带钢开卷、焊接、清洗后，喷气辐射复合加热到670℃，然后辐射管加热到810℃，在810℃下辐射管均热30秒，缓冷到675℃，高氢喷气冷却到250℃左右，然后进入过时效段(再加热不需投入)进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为530MPa，抗拉强度920MPa，断裂延伸率19％。
实例6
基板主要化学成分(mass％)为：0.085％C-0.3％Si-2.3％Mn的带钢开卷、焊接、清洗后，喷射直火预热到355℃，直火加热到680℃，接着辐射管加热到800℃，然后在800℃下喷气辐射复合均热40秒，缓冷到675℃，高氢喷气冷却到230℃左右，然后进入过时效段(再加热不需投入)进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为908MPa，抗拉强度1098MPa，断裂延伸率9％。
实例7
基板主要化学成分(mass％)为：0.12％C-0.28％Si-2.5％Mn的带钢开卷、焊接、清洗后， 喷射直火预热到365℃，直火加热到680℃，接着辐射管加热到830℃，然后在830℃下喷气辐射复合均热40秒，缓冷到700℃，先气雾冷却到600℃再水淬冷却到50℃左右，然后再加热到220℃进入过时效段进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为1086MPa，抗拉强度1343MPa，断裂延伸率7％。
实例8
基板主要化学成分(mass％)为：0.08％C-0.012％Si-0.83％Mn的带钢开卷、焊接、清洗后，喷气辐射复合加热到500℃，然后辐射管加热到790℃，在790℃下喷气辐射复合均热30秒，缓冷到700℃，高氢喷气冷却到250℃左右，然后进入过时效段(再加热不需投入)进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为456MPa，抗拉强度539MPa，断裂延伸率23％。
实例9
基板主要化学成分(mass％)为：0.065％C-0.012％Si-0.85％Mn的带钢开卷、焊接、清洗后，喷射直火预热到360℃，接着直火加热到670℃，然后辐射管加热到800℃，在800℃下辐射管均热60秒，缓冷到675℃，气雾冷却到260℃，接着进行过时效处理(再加热不需投入)，最终喷气冷却到140℃左右最终水冷至室温，接着进行酸洗处理，酸洗结束后平整、卷取，完成生产。最终产品带钢屈服强度为556MPa，抗拉强度658MPa，断裂延伸率14％。
快速退火高强带钢生产线
参见图72～图74，其所示为本发明实施例1～3，在实施例1～3中，本发明所述的快速退火高强带钢生产线，其包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
所述中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、快速冷却段(高氢冷却段、或气雾冷却段或水淬冷却段)、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述喷气辐射复合加热段将辐射管安装到高速喷气加热风箱内部把辐射管燃烧气体产生的热量通过高速喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；
所述横磁感应加热段用于高温带钢的温度进一步快速提升。
该生产线同时采用喷气辐射复合加热段+横磁感应加热段和高氢冷却段或气雾冷却段 或水淬冷却段中的一种快速冷却设备，进行快速加热、快速冷却处理，实现超高强带钢的连续生产。
参见图75，其所示为本发明实施例4，在实施例4中，本发明所述快速退火高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
该中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、快速冷却段(高氢冷却段和气雾冷却段)、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述喷气辐射复合加热段将辐射管安装到高速高温喷气加热风箱内部把辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；
所述横磁感应加热段用于高温带钢的温度进一步快速提升；
所述高氢冷却段和气雾冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走气雾冷却段进行气雾冷却。
该生产线同时采用喷射辐射复合加热段、高氢冷却段和气雾冷却段，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图76，其所示为本发明实施例5，在实施例5中，本发明所述快速退火高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
该中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、快速冷却段(高氢冷却段和水淬冷却段)、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述喷气辐射复合加热段将辐射管安装到高速喷气风箱内部把辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；
所述横磁感应加热段用于高温带钢的温度进一步快速提升；
所述高氢冷却段和水淬冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走水淬冷却段进行水淬冷却。
该生产线同时采用喷射辐射复合加热段、高氢冷却段和水淬冷却段设备，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图77，其所示为本发明实施例6，在实施例6中，本发明所述快速退火高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
该中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、快速冷却段(气雾冷却段和水淬冷却段)、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述喷气辐射复合加热段将辐射管安装到高速喷气风箱内部把辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；
所述横磁感应加热段用于高温带钢的温度进一步快速提升；
所述气雾冷却段和水淬冷却段并联布置，且，气雾冷却段和水淬冷却段之间设连接通道；带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却。
该生产线同时采用喷气辐射复合加热段、横磁感应加热段、气雾冷却段和水淬冷却段，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图78，其所示为本发明实施例7，在实施例7中，本发明所述快速退火高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；
该中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、快速冷却段(高氢冷却段和气雾冷却段和水淬冷却段)、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述喷气辐射复合加热段将辐射管安装到高速喷气风箱内部把辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；
所述横磁感应加热段用于高温带钢的温度进一步快速提升；
所述高氢冷却段、气雾冷却段、水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道；
带钢可以选择仅高氢冷却或仅气雾冷却或仅水淬冷却；也可以选择先气雾冷却后水淬冷却进行快速冷却处理。
该生产线同时采用喷气辐射复合加热段、横磁感应加热段、高氢冷却段和(气雾冷却段+水淬冷却段)，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
优选的，辐射管均热段换成喷气辐射复合加热装置对带钢进行均热处理，实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
优选的，在最终水冷段后设置可选择的酸洗段，带钢可以选择经过酸洗段，也可以旁通跳过酸洗段。
优选的，在酸洗段之后还设置可选择的闪镀段，带钢酸洗后可以选择进行闪镀镍或闪镀锌，也可以跳过闪镀段，直接产出酸洗表面产品。
优选的，清洗工位设置在焊接工位与入***套工位之间，进一步优选地，在入***套 工位之前和之后都设置清洗工位，带钢先进行第一次清洗，进入活套，然后进行第二次清洗，再进入中央连续后处理工位。
优选的，在卷取工位前设置精整工位，对带钢进行精整后再卷取。
优选的，在平整工位之前设置中间活套工位，带钢中央连续后处理后进入中央活套，然后再进入平整，可以实现中央连续后处理不降速进行平整机更换工作辊。
优选的，在平整工位与出***套工位之间还设置拉矫工位，带钢可以选择进行拉矫处理再进入出***套。
优选的，在平整工位与出***套工位之间还设置钝化或耐指纹等表面后处理工位，带钢可以选择进行钝化或耐指纹等表面后处理再进入出***套。
优选的，在平整工位与出***套工位之间还同时设置拉矫工位和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面后处理再进入出***套。
参见图72，以实施例1所述生产线生产一种高强钢，基板主要化学成分(mass％)为0.10％C-0.18％Si-1.96％Mn的带钢开卷、焊接、入***套通过、清洗后，喷气辐射复合加热到600℃，然后辐射管加热到810℃，接着横磁感应加热到920℃，在920℃下辐射管均热40秒，缓冷到670℃，高氢喷气冷却到250℃左右，然后进入过时效段(再加热不需投入)进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后出***套通过、卷取，完成生产。最终产品带钢屈服强度为519MPa，抗拉强度955MPa，断裂延伸率20％。
参见图73，在实施例2所述生产线的基础上，在最终水冷段后设置酸洗段，生产一种高强钢，基板主要化学成分(mass％)为0.06％C-0.010％Si-0.90％Mn的带钢开卷、焊接、入***套通过、清洗后，喷气辐射复合加热到500℃，接着辐射管加热到710℃，然后横磁感应加热到810℃，在810℃下辐射管均热60秒，缓冷到675℃，气雾冷却到500℃，然后水淬至室温，接着再加热到230℃，然后进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，接着进行酸洗处理，酸洗结束后平整、出***套通过、卷取，完成生产。最终产品带钢屈服强度为585MPa，抗拉强度696MPa，断裂延伸率13％。
参见图74，在实施例3所述生产线的基础上，在最终水冷段后设置酸洗段、闪镀段，生产一种超高强钢，基板主要化学成分(mass％)为0.11％C-0.23％Si-2.38％Mn的带钢开卷、焊接、入***套通过、清洗后，喷气辐射复合加热到565℃，辐射管加热到730℃，接着横磁感应加热到830℃，然后在830℃下辐射管均热60秒，缓冷到700℃，接着水淬冷却到50℃左右，然后再加热到230℃进入过时效段进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，接着进行酸洗，然后闪镀镍，最后进行平整后出***套通过、卷取，完成生产。最终产品带钢屈服强度为1093MPa，抗拉强度1359MPa，断裂延伸率5％。
快速退火超高强带钢生产线
参见图79，本发明实施例1，所述的快速退火超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述均热段采用辐射管均热段或喷气辐射复合均热段；
所述快速冷却段采用高氢冷却段；
在本生产线中，采用喷射直火预热段、横磁感应加热段和高氢冷却段，进行快速加热、快速冷却处理，实现超高强带钢的连续生产。
参见图80，其所示为本发明实施例2，在实施例2中，所述快速退火超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述均热段采用辐射管均热段或喷气辐射复合均热段；
所述快速冷却段采用气雾冷却段。
参见图81，其所示为本发明实施例3，在实施例3中，所述快速退火超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述均热段采用辐射管均热段或喷气辐射复合均热段；
所述快速冷却段采用水淬冷却段。
参见图82，其所示为本发明实施例4，在实施例4中，所述快速退火超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述均热段采用辐射管均热段或喷气辐射复合均热段；
所述快速冷却段采用高氢冷却段和气雾冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走气雾冷却段进行气雾冷却。
在该生产线上可以同时采用喷射直火预热段、高氢冷却段和气雾冷却段，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图83，其所示为本发明实施例5，在实施例5中，本发明所述快速退火超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述均热段采用辐射管均热段或喷气辐射复合均热段；
所述快速冷却段采用高氢冷却段和水淬冷却段并联布置，带钢可以选择走高氢冷却段进行高氢冷却，也可以选择走水淬冷却段进行水淬冷却。
在该生产线中，同时采用喷射直火预热段、高氢冷却段和水淬冷却段，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图84，其所示为本发明实施例6，在实施例6中，本发明所述快速退火超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述均热段采用辐射管均热段或喷气辐射复合均热段；
所述快速冷却段采用气雾冷却段和水淬冷却段并联布置，且，气雾冷却段和水淬冷却段之间设置连接通道，形成带钢先气雾冷却段后水淬冷却段、或仅通过气雾冷却段、或仅通过水淬冷却段三种快速冷却方式。
所述快速冷却段采用气雾冷却段和水淬冷却段；
在该生产线中，同时采用喷射直火预热段、气雾冷却段和水淬冷却段，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
参见图85，其所示为本发明实施例7，在实施例7中，本发明所述快速退火超高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；
所述均热段采用辐射管均热段或喷气辐射复合均热段；
所述快速冷却段还包括高氢冷却段，该高氢冷却段与气雾冷却段、水淬冷却段并联布置，且，所述气雾冷却段和水淬冷却段串联布置，形成四种快速冷却方式，即仅高氢冷却 段、或仅气雾冷却段、或仅水淬冷却段、或先气雾冷却段后水淬冷却段。
带钢可以先气雾冷却后水淬冷却，也可以仅气雾冷却或仅水淬冷却；所述高氢冷却段与(气雾冷却段+水淬冷却段)并联布置，带钢可以选择走高氢冷却段，也可以选择走气雾冷却+水淬冷却段进行快速冷却处理。
在该生产线中，同时采用喷射直火预热段、高氢冷却段和(气雾冷却段+水淬冷却段)，进行快速加热、可选择的快速冷却处理，实现超高强带钢的连续生产。
实例1
制备一种高强带钢，其生产线布置如图2所示，带钢开卷、焊接、入***套通过、清洗后，喷射直火预热到355℃，直火加热到655℃，接着辐射管加热到810℃，接着横磁感应加热到910℃，然后在910℃下喷气辐射复合均热60秒，缓冷到700℃，接着高氢冷却到320℃，然后在320℃进行过时效处理(再加热不需投入使用)，最终喷气冷却到140℃左右最终水冷至室温，然后平整后进入出***套，最后卷取，完成生产。
实例2
制备一种高强带钢，其生产线布置如图3所示，基板主要化学成分(mass％)为：0.10％C-0.23％Si-2.1％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射直火预热到360℃，直火加热到660℃，接着辐射管加热到830℃，接着横磁感应加热到930℃，然后在930℃下辐射管均热50秒，缓冷到750℃，接着气雾冷却到300℃，然后在280℃进行过时效处理(再加热不需投入使用)，最终喷气冷却到140℃左右最终水冷至室温，接着进行酸洗处理，然后平整后进入出***套，最后卷取，完成生产。最终产品带钢屈服强度为972MPa，抗拉强度1196MPa，断裂延伸率11％。
实例3
制备一种高强带钢，其生产线布置如图4所示，带钢开卷、焊接、入***套通过、清洗后，喷射直火预热到375℃，直火加热到635℃，接着辐射管加热到800℃，接着横磁感应加热到850℃，然后在850℃下喷气辐射复合均热70秒，缓冷到740℃，接着水淬冷却到50℃左右，然后再加热到320℃，接着在320℃进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，然后平整后进入出***套，最后卷取，完成生产。
实例4
制备一种高强带钢，其生产线布置如图5所示，基板主要化学成分(mass％)为： 0.09％C-0.013％Si-0.87％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射直火预热到370℃，然后直火加热到700℃，接着辐射管加热到800℃，最后横磁感应加热到850℃，在850℃下喷气辐射复合均热50秒，缓冷到670℃，此时可选择高氢冷却，也可以选择气雾冷却，本实施例选择高氢喷气冷却到230℃左右，然后进入过时效段(再加热不需投入)进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后进入出***套，最后卷取，完成生产。最终产品带钢屈服强度为476MPa，抗拉强度556MPa，断裂延伸率24％。
实例5
制备一种高强带钢，其生产线布置如图6所示，带钢开卷、焊接、入***套通过、清洗后，喷射直火预热到358℃，然后直火加热到690℃，接着辐射管加热到790℃，最后横磁感应加热到890℃，在890℃下喷气辐射复合均热50秒，缓冷到670℃，此时可选择高氢冷却，也可以选择水淬冷却，本实施例选择水淬冷却到室温，然后再加热到280℃，接着进入过时效段在280℃进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后进入出***套，最后卷取，完成生产。
实例6
制备一种高强带钢，其生产线布置如图7所示，基板主要化学成分(mass％)为：0.10％C-0.18％Si-2.0％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射直火预热到365℃，直火加热到665℃，接着辐射管加热到820℃，接着横磁感应加热到920℃，然后在920℃下辐射管均热60秒，缓冷到750℃，此时可选择气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却再水淬冷却，本实施例带钢先气雾冷却到500℃，然后水淬至50℃左右，然后再加热到230℃进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，接着平整，进入出***套，最后卷取，完成生产。最终产品带钢屈服强度为956MPa，抗拉强度1183MPa，断裂延伸率13％。
实例7
制备一种高强带钢，其生产线布置如图8所示，带钢开卷、焊接、入***套通过、清洗后，喷射直火预热到395℃，直火加热到700℃，接着辐射管加热到800℃，接着横磁感应加热到890℃，然后在890℃下喷气辐射复合均热60秒，缓冷到750℃，此时可选择高氢冷却，也可选择气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却再水淬冷却，本实施例带钢选择气雾冷却到至50℃左右，然后再加热到260℃进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，接着平整，进入出***套，最后卷取，完成生产。
超短流程双用带钢生产线
参见图86，本发明所述的超短流程双用带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
带钢选择横磁感应加热进行快速加热，选择气雾冷却或/和水淬冷却进行快速冷却，实现带钢快速加热、快速冷却这种快速热处理工艺。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)并联布置，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品；
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图87，其所示为本发明实施例2，在实施例2中，本发明所述超短流程双用带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
带钢选择横磁感应加热进行快速加热，选择气雾冷却或/和水淬冷却进行快速冷却，实现带钢快速加热、快速冷却这种快速热处理工艺。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
本发明设计并联布置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品，而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退 工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联设计，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图88，其所示为本发明实施例3，在实施例3中，本发明所述超短流程双用带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
带钢选择横磁感应加热进行快速加热，选择气雾冷却或/和水淬冷却进行快速冷却，实现带钢快速加热、快速冷却这种快速热处理工艺。
本发明设计采用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
本发明设计并联布置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联设计，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图89，其所示为本发明实施例4，在实施例4中，本发明所述超短流程双用带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
带钢选择横磁感应加热进行快速加热，选择气雾冷却或/和水淬冷却进行快速冷却，实现带钢快速加热、快速冷却这种快速热处理工艺。
本发明设计采用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工 艺；其特征还为所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
本发明设计并联布置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀锌产品，而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联设计，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图90～图93，其所示为本发明实施例5～8，在实施例5～8中，本发明在气刀段后还布置移动镀后快冷段，该移动镀后快冷段为在线、离线切换设置，并与合金化加热段(设计为可移动的，也方便检修)并联布置。生产热镀纯锌产品时，移动镀后快冷段在线，对镀后带钢进行快速冷却，此时合金化加热段离线；生产合金化热镀锌产品时，移动镀后快冷段离线，此时合金化加热段在线，对带钢进行合金化加热。
优选的，在焊接工位与入***套工位之间设置可选择的清洗工位，带钢可以选择经过清洗工位进行清洗，也可以旁通跳过清洗工位。
优选的，将清洗工位设置在入***套工位之后，带钢可以选择经过清洗工位进行清洗，也可以旁通跳过清洗工位。
优选的，在入***套工位之前和之后均设置清洗工位，对带钢进行二次清洗，进一步提高带钢表面质量。
优选的，在横磁感应加热段之前还布置纵磁感应加热段，带钢先经过纵磁感应加热段，可以选择纵磁感应加热，也可以从纵磁感应加热段中空过直接进入横磁感应加热段进行加热。
优选的，在所述的酸洗段之后设置闪镀铁或镍段工位，酸洗后的带钢可以选择闪镀铁或镍，以提高带钢的可镀性。
优选的，在卷取工位前设置精整工位，对带钢进行精整后再卷取。
优选的，在平整工位之前还设置中间活套工位，以实现平整机在线更换工作辊时可以不损失带钢质量。
优选的，在平整工位与出***套工位之间设置拉矫工位，带钢可以拉矫后再进入出***套。
优选的，在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，带钢 可以进行钝化或耐指纹等表面后处理，然后再进入出***套。
优选的，在平整工位与出***套工位之间同时设置拉矫工位及相应的和钝化或耐指纹等表面后处理工位，带钢可以进行钝化或耐指纹等表面后处理，然后再进入出***套。
实施例1
基板主要化学成分(mass％)为：0.10％C-0.07％Si-1.908％Mn的带钢开卷、焊接后，经横磁感应加热到810℃，气雾冷却到230℃后自然冷却，进行酸洗，然后再加热到220℃进行过时效处理，最终喷气冷却到140℃左右然后最终水冷至室温，然后平整、卷取，完成生产。最终产品带钢屈服强度为720MPa，抗拉强度998MPa，断裂延伸率8％。
实施例2
基板主要化学成分(mass％)为：0.05％C-0.23％Si-1.35％Mn的带钢开卷、焊接后，经横磁感应加热到800℃，在800℃辐射管均热30秒，先气雾冷却到650℃再水淬冷却到室温，接着酸洗，然后再加热到460℃进行热镀锌，经气刀控制镀层重量后合金化加热到500℃，在500℃下合金化均热20秒后进行镀后冷却，最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为582MPa，抗拉强度809MPa，断裂延伸率15％。
实施例3
基板主要化学成分(mass％)为：0.18％C-1.65％Si-2.1％Mn的带钢开卷、焊接后，经横磁感应加热到846℃，在845℃下均热60秒，气雾冷却到700℃再水淬至室温，然后酸洗，再加热到400℃均衡保温，然后再加热到455℃热镀锌，经气刀控制镀层重量后进行镀后冷却，最终水冷至室温，平整后卷取，完成生产。最终产品带钢屈服强度为742MPa，抗拉强度1108MPa，断裂延伸率13％。
本发明在目前超高强钢市场需求逐年增加和对CO2、NOx排放逐渐严格限制的形势下，本发明具有非常广阔的应用前景，尤其是在城市钢厂的推广应用前景更加广阔。
超短流程热镀纯锌高强带钢生产线
参见图94，其所示为本发明实施例1，在实施例1中，本发明所述超短流程热镀纯锌高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；
中央连续后处理工位依次包括快速加热工位、均热工位、快速冷却工位、表面改性工位和热镀纯锌工位；
所述快速加热工位采用直火加热设备；
所述均热工位采用辐射管均热设备或喷气辐射复合均热设备；
所述快速冷却工位采用气雾冷却设备；
所述表面改性工位采用酸洗设备；
所述热镀纯锌工位依次设有再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
至此，该条生产线同时采用直火加热设备和气雾冷却设备进行快速加热、快速冷却处理，并使用酸洗设备进行表面改性，提高超高强钢的可镀性，实现热镀锌超高强带钢的连续生产。
参见图95，其所示为本发明实施例2，在实施例2中，本发明所述超短流程热镀纯锌高强带钢生产线，包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；
中央连续后处理工位依次包括快速加热工位、均热工位、快速冷却工位、表面改性工位和热镀纯锌工位；
所述快速加热工位采用直火加热设备；
所述均热工位采用辐射管均热设备或喷气辐射复合均热设备；
所述快速冷却工位采用水淬冷却设备；
所述表面改性工位采用酸洗设备；
所述热镀纯锌工位依次设有再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
至此，该条生产线同时采用直火加热设备和水淬冷却设备进行快速加热、快速冷却处理，并使用酸洗设备进行表面改性，提高超高强钢的可镀性，实现热镀锌超高强带钢的连续生产。
参见图96，其所示为本发明实施例3，在实施例3中，本发明所述超短流程热镀纯锌高强带钢生产线，包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；
所述中央连续后处理工位依次包括快速加热工位、均热工位、快速冷却工位、表面改性工位和热镀纯锌工位；
所述快速加热工位采用直火加热设备；
所述均热工位采用辐射管均热设备或喷气辐射复合均热设备；
所述快速冷却工位同时包括气雾冷却设备和水淬冷却设备；
所述表面改性工位采用酸洗设备；
所述热镀纯锌工位依次设有再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段，带钢在快速冷却工位可以选择直接进行水淬冷却处理，也可以选择先进行气雾冷却再进行水淬冷却处理。
至此，该生产线同时采用直火加热段设备和气雾冷却段设备+水淬冷却段设备进行快速加热、快速冷却处理，并使用酸洗设备进行表面改性，提高超高强钢的可镀性，实现热镀锌超高强带钢的连续生产。
参见图97～图99，其所示为本发明实施例4～6，在实施例4～6中，所述快速加热工位采用直火加热设备和横磁感应加热设备串联设置，带钢在快速加热工位先进行直火加热、后进行横磁感应加热，完成快速加热过程，再进行后续处理。
参见图100～图105，其所示为本发明实施例7～12，在实施例7～12中，所述表面改性工位中，在酸洗段后还设置电镀铁或闪镀镍设备，带钢酸洗后可以选择在带钢表面闪镀一层铁或镍，然后再进行后续的热镀锌。
参见图106，其所示为本发明实施例13，在实施例13中，本发明所述超短流程合金化热镀锌超高强带钢生产线，包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；
所述中央连续后处理工位依次包括快速加热工位、均热工位、快速冷却工位、表面改性工位和合金化热镀锌工位；
所述快速加热工位采用直火加热设备；
所述均热工位采用辐射管均热装置或喷气辐射复合均热装置；
所述快速冷却工位采用气雾冷却设备；
所述表面改性工位采用酸洗设备；
所述合金化热镀锌工位依次设有再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
至此，该生产线同时采用直火加热段设备和气雾冷却段设备进行快速加热、快速冷却处理，并采用酸洗设备提高超高强钢的可镀性，实现合金化热镀锌超高强带钢的连续生产。
参见图107，其所示为本发明实施例14，在实施例14中，本发明所述超短流程合金化热镀锌高强带钢生产线，包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；
所述中央连续后处理工位依次包括快速加热工位、均热工位、快速冷却工位、表面改性工位和合金化热镀锌工位；
所述快速加热工位采用直火加热段设备；
所述均热工位采用辐射管均热设备或喷气辐射复合均热设备；
所述快速冷却工位采用水淬冷却设备；
所述表面改性工位采用酸洗设备；
所述合金化热镀锌工位依次设有再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
至此，在该生产线上同时采用直火加热段设备和水淬冷却段设备进行快速加热、快速冷却处理，并采用酸洗设备提高超高强钢的可镀性，实现合金化热镀锌超高强带钢的连续生产。
参见图108，其所示为本发明实施例15，在实施例15中，本发明所述超短流程合金化热镀锌高强带钢生产线，包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；
所述中央连续后处理工位依次包括快速加热工位、均热工位、快速冷却工位、表面改性工位和合金化热镀锌工位；
所述快速加热工位采用直火加热段设备；
所述均热工位采用辐射管均热装置或喷气辐射复合均热装置；
所述快速冷却工位同时包括气雾冷却设备和水淬冷却设备；
所述表面改性工位采用酸洗设备；
所述合金化热镀锌工位依次设有再加热段、炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段和最终水冷段。
至此，该生产线上同时采用直火加热段设备和气雾冷却段设备+水淬冷却段设备进行快速加热、快速冷却处理，并采用酸洗设备提高超高强钢的可镀性，实现合金化热镀锌超高强带钢的连续生产。
参见图109～图111，其所示为本发明实施例16～18，在实施例16～18中，本发明所述超短流程合金化热镀锌高强带钢生产线中，所述中央连续后处理工位的快速加热工位采用直火加热设备和横磁感应加热设备串联设置，带钢在快速加热工位先进行直火加热、后进行横磁感应加热，完成快速加热过程，再进行后续处理。
本发明所述中央连续后处理工位的表面改性工位，在酸洗设备后还设置闪镀铁或闪镀镍设备，带钢酸洗后可以选择在带钢表面闪镀一层铁或镍，然后再进行后续的合金化热镀锌。
所述中央连续后处理工位的合金化热镀锌工位，在气刀段后，与合金化加热段设备并列设置移动镀后快冷段设备，带钢从锌锅段设备热镀锌经气刀段设备控制镀层重量以后如果生产热镀纯锌产品，该移动镀后快冷段设备切换在线使用，将合金化加热段设备离线；如果生产合金化热镀锌产品，该移动镀后快冷段设备切换离线，将合金化加热段设备切换 在线使用。
优选的，在焊接工位与入***套工位之间设置了清洗工位设备，带钢可以选择经过清洗工位设备进行清洗，也可以旁通跳过清洗工位。
优选的，将清洗工位设备设置在紧跟入***套工位之后，带钢可以选择经过清洗工位设备进行清洗，也可以旁通跳过清洗工位。
优选的，在平整工位前设置中央活套设备。
优选的，在卷取工位与出***套工位之间设置精整工位，带钢精整后再进行卷取。
优选的，在平整工位与出***套工位之间设置拉矫工位，带钢可以选择进行拉矫处理再进入出***套。
优选的，在平整工位与出***套工位之间还设置钝化或耐指纹等表面后处理工位设备，带钢可以选择进行钝化或耐指纹等表面处理再进入出***套。
优选的，在平整工位与出***套工位之间同时设置拉矫工位和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面处理再进入出***套。
优选的，用电辐射管均热段设备或电阻丝均热段设备或电阻带均热段设备代替辐射管均热设备或喷气辐射复合均热设备，用于燃气供用紧张的地方建设本发明所述生产线生产热镀锌高强带钢。
实例1
一种热镀纯锌高强带钢的制备，其产线参见图3，基板主要化学成分(mass％)为0.12％C-0.50％Si-2.0％Mn的热轧酸洗板带钢开卷、焊接、入***套通过后，直火加热到700℃，辐射管均热40秒，气雾冷却到80℃左右，酸洗，然后再加热到460℃，经过炉鼻子后浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，然后最终水冷，接着进行平整、出***套通过后卷取，完成生产。最终产品带钢屈服强度为800MPa，抗拉强度1196MPa，断裂延伸率11％。
实例2
一种热镀纯锌高强带钢的制备，其产线参见图7，基板主要化学成分(mass％)为0.085％C-0.16％Si-2.0％Mn的带钢开卷、焊接、入***套通过后，直火加热到700℃，然后横磁感应加热到820℃，辐射管均热30秒，水淬冷却到50℃左右，酸洗，然后再加热到460℃，经过炉鼻子后浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，然后最终水冷，接着进行平整、出***套通过后卷取，完成生产。最终产品带钢屈服强度为595MPa，抗拉强度998MPa，断裂延伸率10.5％。
实例3
一种热镀纯锌高强带钢的制备，其产线参见图11，基板主要化学成分(mass％)为0.095％C-1.5％Si-2.4％Mn的热轧酸洗带钢开卷、焊接、入***套通过后，直火加热到700℃，喷气辐射复合均热20秒，先气雾冷却到400℃左右，再水淬至50℃左右，酸洗，电镀镍后再加热到455℃，经过炉鼻子后浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，然后最终水冷至室温，接着进行平整、出***套通过后卷取，完成生产。最终产品带钢屈服强度为816MPa，抗拉强度1190MPa，断裂延伸率9％。
实例4
一种热镀纯锌高强带钢的制备，其产线参见图14，基板主要化学成分(mass％)为0.12％C-0.27％Si-2.5％Mn的带钢开卷、焊接、入***套通过后，直火加热到680℃，然后横磁感应加热到830℃，辐射管均热40秒，气雾冷却到720℃，然后水淬冷却到50℃左右，酸洗，然后再加热到460℃，经过炉鼻子后浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，然后最终水冷，接着进行平整，出***套通过后卷取，完成生产。最终产品带钢屈服强度为1013MPa，抗拉强度1296MPa，断裂延伸率7％。
实例5
一种热镀纯锌高强带钢的制备，其产线参见图20，基板主要化学成分(mass％)为0.08％C-0.3％Si-2.33％Mn的带钢开卷、焊接、入***套通过后，直火加热到670℃，再横磁感应加热到810℃，辐射管均热40秒，先气雾冷却到500℃左右，再水淬至50℃左右，酸洗，再加热到455℃，经过炉鼻子后浸入锌锅进行热镀锌，经气刀控制镀层重量后进入合金化加热段加热到520℃进行合金化，然后进入合金化均热段在515℃下均热25秒，再进行镀后冷却，然后最终水冷至室温，接着进行平整，出***套通过后卷取，完成生产。最终产品带钢屈服强度为816MPa，抗拉强度1190MPa，断裂延伸率9％。
实例6
一种热镀纯锌高强带钢的制备，其产线是在图20的基础上在再加热段之后增加均衡保温段和二次再加热段，基板主要化学成分(mass％)为0.185％C-1.75％Si-2.75％Mn的带钢开卷、焊接、入***套通过后，直火加热到730℃，再横磁感应加热到910℃，辐射管均热40秒，先气雾冷却到230℃左右，再水淬至50℃左右，酸洗，先第一步再加热到400℃在均衡保温段保温80秒，再第二步再加热到460℃，经过炉鼻子后浸入锌锅进行热镀锌，经 气刀控制镀层重量后进入合金化加热段加热到510℃进行合金化，然后进入合金化均热段在500℃下均热30秒，再进行镀后冷却，然后最终水冷至室温，接着进行平整，出***套通过后卷取，完成生产。最终产品带钢屈服强度为1015MPa，抗拉强度1212MPa，断裂延伸率14.6％。
超短流程超高强带钢生产线
参见图112，其所示为本发明实施例1，在实施例1中，本发明所述种超短流程超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-卷取；其中，
所述中央连续后处理工位依次包括快速加热工位、均热工位和快速冷却工位；
所述快速加热工位采用喷气辐射复合加热装置；
所述均热工位采用辐射管均热设备或喷气辐射复合均热设备；
所述快速冷却工位采用高氢冷却设备。
参见图113，其所示为本发明实施例2，在实施例2中，本发明所述种超短流程超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-卷取；其中，
所述中央连续后处理工位依次包括快速加热工位、均热工位和快速冷却工位；
所述快速加热工位采用喷气辐射复合加热装置；
所述均热工位采用辐射管均热设备或喷气辐射复合均热设备；
所述快速冷却工位采用气雾冷却设备。
参见图114，其所示为本发明实施例3，在实施例3中，本发明所述种超短流程超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-卷取；其中，
所述中央连续后处理工位依次包括快速加热工位、均热工位和快速冷却工位；
所述快速加热工位采用喷气辐射复合加热装置；
所述均热工位采用辐射管均热设备或喷气辐射复合均热设备；
所述快速冷却工位采用水淬冷却设备。
参见图115，其所示为本发明实施例4，在实施例4中，所述快速加热工位采用喷气辐射复合加热装置与横磁感应加热设备串联布置，且，所述快速冷却工位采用气雾冷却设备与水淬冷却设备串联或并联布置。
参见图116，其所示为本发明实施例5，在实施例5中，所述快速加热工位采用喷气辐射复合加热装置与横磁感应加热设备串联布置，且，所述快速冷却工位采用高氢冷却设备 与水淬冷却设备并联布置。
参见图117，其所示为本发明实施例6，在实施例6中，所述快速加热工位采用喷气辐射复合加热装置与横磁感应加热设备串联布置，且，所述快速冷却工位采用高氢冷却设备与气雾冷却设备并联布置。
参见图118，其所示为本发明实施例7，在实施例7中，所述快速加热工位采用喷气辐射复合加热装置与横磁感应加热设备串联布置，且，所述快速冷却工位采用高氢冷却设备、水淬冷却设备与气雾冷却设备并联布置，且，气雾冷却设备与水淬冷却设备串联布置。
参见图119～图125，其所示为本发明实施例8～14，实施例8～14是在实施例1～7的基础上，分别在焊接工位与入***套工位之间设置可选择的清洗工位。
参见图126～图132，其所示为本发明实施例15～21，实施例15～21是在实施例1～7的基础上，所述快速加热工位采用串联设置的喷气辐射复合加热装置+横磁感应加热设备进行快速加热。
参见图133～图139，其所示为本发明实施例22～28，实施例22～28是在实施例1～7的基础上，所述快速加热工位采用可选择的纵磁感应加热设备与串联设置的喷气辐射复合加热装置+横磁感应加热设备进一步串联布置，带钢可以选择先经过纵磁感应加热设备加热，也可以旁通跳过纵磁感应加热设备直接进入串联布置的喷气辐射复合加热装置+横磁感应加热进行加热。
实例1
如图112所示，带钢开卷、焊接后进入入***套，然后采用喷气辐射复合加热到780℃，在780℃喷气辐射复合均热，然后高氢冷却到室温，进入出***套，最后卷取，完成生产。
实例2
如图113所示，基板主要化学成分(mass％)为：0.095％C-0.05％Si-1.88％Mn的带钢开卷、焊接后进入入***套，经喷气辐射复合加热到820℃，然后辐射管均热40秒，接着气雾冷却到250℃后自然冷却至室温，进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为710MPa，抗拉强度993MPa，断裂延伸率9％。
实例3
如图114所示，带钢开卷、焊接后进入入***套，然后采用喷气辐射复合加热到800℃，在800℃喷气辐射复合均热，然后水淬冷却到室温，进入出***套，最后卷取，完成生产。
实例4
如图115所示，带钢开卷、焊接后进入入***套，然后采用喷气辐射复合加热到800℃，在800℃喷气辐射复合均热，然后水淬冷却到室温，进入出***套，最后卷取，完成生产。
实例5
如图116所示，带钢开卷、焊接后进入入***套，然后采用喷气辐射复合加热到820℃，在820℃喷气辐射复合均热，可选择高氢冷却到室温，也可选择水淬冷却到室温，然后进入出***套，最后卷取，完成生产。
实例6
如图117所示，带钢开卷、焊接后进入入***套，然后采用喷气辐射复合加热到850℃，在850℃喷气辐射复合均热，可选择高氢冷却到室温，也可选择气雾冷却到室温，然后进入出***套，最后卷取，完成生产。
实例7
如图118所示，带钢开卷、焊接后进入入***套，然后采用喷气辐射复合加热到870℃，在870℃喷气辐射复合均热，可选择高氢冷却到室温，也可选择气雾冷却到室温，也可选择水淬冷却到室温，然后进入出***套，最后卷取，完成生产。
实例8
如图119所示，带钢开卷、焊接后可选择先清洗再进入入***套也可选择直接进入入***套，然后采用喷气辐射复合加热到815℃，在815℃喷气辐射复合均热，然后高氢冷却到室温，进入出***套，最后卷取，完成生产。
实例9
如图120所示，基板主要化学成分(mass％)为：0.095％C-0.05％Si-1.88％Mn的带钢开卷、焊接后可选择先清洗再进入入***套也可选择直接进入入***套，经喷气辐射复合加热到825℃，然后辐射管均热50秒，接着气雾冷却到235℃后自然冷却至室温，进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为775MPa，抗拉强度1053MPa，断裂延伸率7％。
实例10
如图121所示，带钢开卷、焊接后可选择先清洗再进入入***套也可选择直接进入入***套，然后采用喷气辐射复合加热到805℃，在805℃喷气辐射复合均热，然后水淬冷却到室温，进入出***套，最后卷取，完成生产。
实例11
如图122所示，带钢开卷、焊接后可选择先清洗再进入入***套也可选择直接进入入***套，然后采用喷气辐射复合加热到825℃，在825℃喷气辐射复合均热，然后水淬冷却到室温，进入出***套，最后卷取，完成生产。
实例12
如图123所示，带钢开卷、焊接后可选择先清洗再进入入***套也可选择直接进入入***套，然后采用喷气辐射复合加热到835℃，在835℃喷气辐射复合均热，可选择高氢冷却到室温，也可选择水淬冷却到室温，然后进入出***套，最后卷取，完成生产。
实例13
如图124所示，带钢开卷、焊接后可选择先清洗再进入入***套也可选择直接进入入***套，然后采用喷气辐射复合加热到855℃，在855℃喷气辐射复合均热，可选择高氢冷却到室温，也可选择气雾冷却到室温，然后进入出***套，最后卷取，完成生产。
实例14
如图125所示，带钢开卷、焊接后进入入***套，然后采用喷气辐射复合加热到870℃，在870℃喷气辐射复合均热，可选择高氢冷却到室温，也可选择气雾冷却到室温，也可选择水淬冷却到室温，然后进入出***套，最后卷取，完成生产。
实例15
如图126所示，带钢开卷、焊接后进入入***套，带钢先喷气辐射复合加热到780℃，再横磁感应加热到880℃，在880℃喷气辐射复合均热，然后高氢冷却到室温，进入出***套，最后卷取，完成生产。
实例16
如图127所示，基板主要化学成分(mass％)为：0.095％C-0.05％Si-1.88％Mn的带钢开卷、焊接后进入入***套，带钢先喷气辐射复合加热到820℃，再横磁感应加热到920℃， 然后辐射管均热40秒，接着气雾冷却到250℃后自然冷却至室温，进入出***套，然后卷取，完成生产。最终产品带钢屈服强度为765MPa，抗拉强度1043MPa，断裂延伸率8％。
实例17
如图128所示，带钢开卷、焊接后进入入***套，带钢先喷气辐射复合加热到800℃，再横磁感应加热到900℃，在900℃喷气辐射复合均热，然后水淬冷却到室温，进入出***套，最后卷取，完成生产。
实例18
如图129所示，带钢开卷、焊接后进入入***套，带钢先喷气辐射复合加热到800℃，再横磁感应加热到900℃，然后水淬冷却到室温，进入出***套，最后卷取，完成生产。
实例19
如图130所示，带钢开卷、焊接后进入入***套，带钢先喷气辐射复合加热到820℃，再横磁感应加热到920℃，可选择高氢冷却到室温，也可选择水淬冷却到室温，然后进入出***套，最后卷取，完成生产。
实例20
如图131所示，带钢开卷、焊接后进入入***套，带钢先喷气辐射复合加热到750℃，再横磁感应加热到850℃，可选择高氢冷却到室温，也可选择气雾冷却到室温，然后进入出***套，最后卷取，完成生产。
实例21
如图132所示，带钢开卷、焊接后进入入***套，带钢先喷气辐射复合加热到770℃，再横磁感应加热到870℃，在870℃喷气辐射复合均热，可选择高氢冷却到室温，也可选择气雾冷却到室温，也可选择水淬冷却到室温，然后进入出***套，最后卷取，完成生产。
实例22
如图133所示，带钢开卷、焊接后进入入***套，带钢先纵磁感应加热到420℃，再喷气辐射复合加热到780℃，接着再横磁感应加热到880℃，在880℃喷气辐射复合均热，然后高氢冷却到室温，进入出***套，最后卷取，完成生产。
实例23
如图134所示，带钢开卷、焊接后进入入***套，带钢先纵磁感应加热到450℃，再喷气辐射复合加热到820℃，接着再横磁感应加热到920℃，然后辐射管均热40秒，接着气雾冷却到250℃后自然冷却至室温，进入出***套，然后卷取，完成生产。
实例24
如图135所示，带钢开卷、焊接后进入入***套，带钢先纵磁感应加热到400℃，再喷气辐射复合加热到800℃，接着再横磁感应加热到900℃，在900℃喷气辐射复合均热，然后水淬冷却到室温，进入出***套，最后卷取，完成生产。
实例25
如图136所示，带钢开卷、焊接后进入入***套，带钢先纵磁感应加热到480℃，再喷气辐射复合加热到820℃，接着再横磁感应加热到900℃，然后水淬冷却到室温，进入出***套，最后卷取，完成生产。
实例26
如图137所示，带钢开卷、焊接后进入入***套，带钢先纵磁感应加热到350℃，再喷气辐射复合加热到840℃，接着再横磁感应加热到920℃，可选择高氢冷却到室温，也可选择水淬冷却到室温，然后进入出***套，最后卷取，完成生产。
实例27
如图138所示，带钢开卷、焊接后进入入***套，带钢先纵磁感应加热到410℃，再喷气辐射复合加热到700℃，接着再横磁感应加热到850℃，可选择高氢冷却到室温，也可选择气雾冷却到室温，然后进入出***套，最后卷取，完成生产。
实例28
如图139所示，带钢开卷、焊接后进入入***套，带钢先纵磁感应加热到500℃，再喷气辐射复合加热到800℃，接着再横磁感应加热到930℃，在930℃喷气辐射复合均热，可选择高氢冷却到室温，也可选择气雾冷却到室温，也可选择水淬冷却到室温，然后进入出***套，最后卷取，完成生产。
本发明在目前超高强钢市场需求逐年增加和对CO2、NOx排放逐渐严格限制的形势下，本发明具有非常广阔的应用前景，尤其是在城市钢厂的推广应用前景更加广阔。
超短流程热镀锌高强带钢生产线
参见图140，其所示为本发明实施例1，在实施例1中，所述超短流程热镀纯锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，所述的中央连续后处理工位依次包括快速加热段、均热段、快速冷却段和热镀锌段；
所述的快速加热段为直火加热，所述均热段为喷气辐射复合均热，所述快速冷却工段为高氢冷却；
所述热镀锌段依次由炉鼻子、锌锅、气刀、镀后冷却设备和最终水冷设备组成。
该生产线在同一条生产线同时采用直火加热、高氢冷却和喷气辐射复合均热进行快速加热、快速冷却处理，实现热镀锌高强带钢的连续生产。
参见图141，其所示为本发明实施例2，在实施例2中，本发明超短流程合金化热镀锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括快速加热段、均热段、快速冷却段和合金化热镀锌段；
所述的快速加热段为直火加热；
所述均热段为喷气辐射复合均热；
所述快速冷却段为高氢冷却；
所述合金化热镀锌段依次包括炉鼻子、锌锅、气刀、合金化加热设备、合金化均热设备、镀后冷却设备和最终水冷设备。
该生产线在同一条生产线同时采用直火加热、高氢冷却和喷气辐射复合均热进行快速加热、快速冷却处理，实现合金化热镀锌高强带钢的连续生产。
参见图142，本发明实施例3，在实施例1的基础上，所述中央连续后处理工位的热镀锌段，在气刀后、镀后冷却设备前设置可选择的移动镀后快冷设备，带钢浸入锌锅进行热镀锌后经气刀控制镀层重量，可以选择使用移动镀后快冷设备进行镀后快冷，也可以不选择使用移动镀后快冷设备进行自然冷却后再进行镀后冷却，实现热镀锌高强带钢的连续生产。
参见图143，本发明实施例4，在实施例2的基础上，所述中央连续后处理工位的热镀锌段，在气刀后、镀后冷却设备前设置可选择的移动镀后快冷设备，带钢浸入锌锅进行热镀锌后经气刀段控制镀层重量，可以选择使用移动镀后快冷设备进行镀后快冷，也可以不选择使用移动镀后快冷设备进行自然冷却后再进行镀后冷却，实现热镀锌高强带钢的连续 生产。
参见图144，其所示为本发明实施例5，在实施例5中，本发明所述的超短流程热镀锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括快速加热段、均热段、快速冷却段和热镀锌段；
所述的快速加热段采用直火加热和(喷气辐射复合加热+横磁感应加热)串联布置；
所述均热段为喷气辐射复合均热；
所述快速冷却段为高氢冷却；
所述热镀锌段依次由炉鼻子、锌锅、气刀、镀后冷却设备和最终水冷设备组成。
该生产线在同一条生产线同时采用直火加热+横磁感应加热串联成快速加热段进行快速加热，然后使用高氢冷却进行快速冷却，实现高强钢的快速加热、快速冷却处理，最终实现热镀锌高强带钢的连续生产。
参见图145，其所示为本发明实施例6，在实施例6中，本发明所述超短流程合金化热镀锌高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，
所述的中央连续后处理工位依次包括快速加热段、均热段、快速冷却段和合金化热镀锌段；
所述的快速加热段采用直火加热和(喷气辐射复合加热+横磁感应加热)串联布置；
所述均热段为喷气辐射复合均热；
所述快速冷却段为高氢冷却；
所述合金化热镀锌段依次包括炉鼻子、锌锅、气刀、合金化加热设备、合金化均热设备、镀后冷却设备和最终水冷设备。
该生产线在同一条生产线同时采用直火加热+(喷气辐射复合加热+横磁感应加热)串联成快速加热段进行快速加热，然后使用高氢冷却进行快速冷却，实现高强钢的快速加热、快速冷却处理，最终实现合金化热镀锌高强带钢的连续生产。
参见图146，其所示为本发明实施例7，实施例7是在实施例5基础上，所述中央连续后处理工位的热镀锌段，在气刀后、镀后冷却设备前设置可选择的移动镀后快冷设备，带钢浸入锌锅进行热镀锌后经气刀段控制镀层重量，可以选择使用移动镀后快冷设备进行镀后快冷，也可以不选择使用移动镀后快冷设备进行自然冷却后再进行镀后冷却，实现热镀锌高强带钢的连续生产。
参见图147，其所示为本发明实施例8，实施例8是在实施例6基础上，所述中央连续后处理工位的热镀锌段，在气刀后、镀后冷却设备前设置可选择的移动镀后快冷设备，带 钢浸入锌锅进行热镀锌后经气刀段控制镀层重量，可以选择使用移动镀后快冷设备进行镀后快冷，也可以不选择使用移动镀后快冷设备进行自然冷却后再进行镀后冷却，实现热镀锌高强带钢的连续生产。
实例1
制造一种高强钢，其生产线布置如图140所示，基板主要化学成分(mass％)为0.05％C-0.01％Si-1.3％Mn，热轧酸洗带钢开卷、焊接、入***套通过后，直火加热到700℃，喷气辐射复合均热20秒，高氢冷却到460℃，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，然后最终水冷，经出***套通过后，接着进行平整、卷取，完成生产。最终产品带钢屈服强度为326MPa，抗拉强度442MPa，断裂延伸率35％。
实例2
制造一种高强钢，其生产线布置如图141所示，基板主要化学成分(mass％)为0.06％C-0.015％Si-1.35％Mn，热轧酸洗带钢开卷、焊接、入***套通过后，直火加热到700℃，喷气辐射复合均热30秒，高氢冷却到460℃，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进入合金化加热炉加热到510℃，在500℃下合金化均热20秒，接着进行镀后冷却，然后最终水冷，经出***套通过后，接着进行平整、卷取，完成生产。最终产品带钢屈服强度为370MPa，抗拉强度435MPa，断裂延伸率34％。
实例3
制造一种高强钢，其生产线布置如图144所示，基板主要化学成分(mass％)为0.095％C-0.18％Si-2.0％Mn，带钢开卷、焊接、入***套通过后，直火加热到650℃，然后喷气辐射复合加热到750℃，然后横磁感应加热到800℃，喷气辐射复合均热30秒，高氢冷却到460℃，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却，然后最终水冷，经出***套通过后，接着进行平整、卷取，完成生产。最终产品带钢屈服强度为565MPa，抗拉强度912MPa，断裂延伸率16％。
实例4
制造一种高强钢，其生产线布置图如图145所示，基板主要化学成分(mass％)为0.09％C-0.17％Si-1.96％Mn，带钢开卷、焊接、入***套通过后，直火加热到650℃，然后喷气辐射复合加热到780℃，接着横磁感应加热到850℃，喷气辐射复合均热40秒，高氢冷却到460℃，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进入合金化加热炉加 热到515℃，在510℃下合金化均热25秒，进行镀后冷却，然后最终水冷，经出***套通过后，接着进行平整、卷取，完成生产。最终产品带钢屈服强度为530MPa，抗拉强度890MPa，断裂延伸率17％。
实例5
制造一种高强钢，其生产线布置如图146所示，基板主要化学成分(mass％)为0.085％C-0.26％Si-2.3％Mn，带钢开卷、焊接、入***套通过后，直火加热到730℃，然后喷气辐射复合加热到810℃，然后横磁感应加热到910℃，喷气辐射复合均热30秒，高氢冷却到460℃，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后先进行移动镀后快冷到365℃，再进行镀后冷却，然后最终水冷，经出***套通过后，接着进行平整、卷取，完成生产。最终产品带钢屈服强度为908MPa，抗拉强度1192MPa，断裂延伸率9％。
实例6
制造一种高强钢，其生产线布置如图147所示，基板主要化学成分(mass％)为0.055％C-0.008％Si-1.25％Mn，带钢开卷、焊接、入***套通过后，直火加热到600℃，然后喷气辐射复合加热到700℃，然后横磁感应加热到730℃，接着喷气辐射复合均热30秒，高氢冷却到460℃，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进入合金化加热炉加热到505℃，在505℃下合金化均热22秒，进行镀后冷却，然后最终水冷，经出***套通过后，接着进行平整、卷取，完成生产。最终产品带钢屈服强度为336MPa，抗拉强度436MPa，断裂延伸率37％。
柔性化的适合生产多种高强钢的冷轧带钢后处理生产线
参见图148，本发明所述的柔性化的适合生产多种高强钢的冷轧带钢后处理生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；其中，
所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、并联设置的可选择的横磁感应加热段或马弗炉段、喷气辐射复合均热段、缓冷段、快速冷却段、再加热段；所述快速冷却段包括高氢冷却或/和气雾冷却或/和水淬冷却段；
所述再加热段后设炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段、最终水冷段；或，通过移动通道、过时效段、最终喷气冷却段连接至所述最终水冷段；
最终水冷段后可选择依次设置酸洗段或(酸洗段+闪镀段)；带钢可以选择经过酸洗段 生产冷轧酸洗产品，也可以旁通跨过酸洗段生产冷轧退火产品，带钢酸洗后还可以选择进入闪镀段，生产闪镀镍或者闪镀锌等闪镀产品；
所述辐射管加热段燃烧天然气或液化石油气或煤气等气体燃料，燃烧过程中产生高温废气，
所述喷射辐射管预热段利用加热段或/和均热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述的辐射管加热段与(并联的可选择横磁感应加热段或马弗炉段)串联；
所述的喷气辐射复合均热段采用强制对流与辐射相结合的方式快速均热带钢，提高带钢温度均匀性和实现带钢均热温度的快速调节；
所述冷轧带钢后处理生产线采用喷射辐射管预热段的同时采用进行快速冷却处理，然后进行再加热，然后进行镀锌或过时效处理；
所述炉鼻子段与移动通道并联布置，带钢从炉鼻子段向后通过生产热镀纯锌或者合金化热镀锌产品，带钢从移动通道通过生产冷轧退火、或酸洗或闪镀产品；
至此，所述处理线具备至少三种或三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
参见图148，其所示为本发明实施例1，在实施例1中，在平整工位与出***套工位之间还布置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位，可对带钢进行拉矫和/或表面后处理。
优选的，所述的马弗炉段设备前后自带密封装置，并且马弗炉段设备还配备气氛调节装置，对其内的氢气含量、氧气含量和露点可以单独进行调节控制。
参见图149，其所示为本发明实施例2，在实施例2中，在再加热段与炉鼻子段之间还布置均衡保温段设备，对带钢进行保温处理后再进行热镀锌。
参见图150，其所示为本发明实施例3，在实施例3中，在气刀段与镀后冷却段之间还布置移动镀后快冷段设备，该移动镀后快冷段与合金化加热设备并联布置，实现热镀纯锌高强钢产品镀后带钢的快速冷却；优选的，在气刀段的上方10米范围内设置移动镀后快冷段设备。
参见图151，其所示为本发明实施例4，在实施例4中，在均衡保温段之后布置二次再加热段设备，对均衡保温的带钢进行二次再加热，然后进行热镀锌或者过时效处理。
参见图152，其所示为本发明实施例5，在实施例5中，在所述快速冷却段与再加热段之间布置酸洗段设备，该酸洗段设备包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除， 对于热镀纯锌或者合金化热镀锌产品，也可以提高高强带钢特别是超高强带钢的可镀性。
参见图153，其所示为本发明实施例6，在实施例6中，优选的，在酸洗段之后布置闪镀铁或闪镀镍段设备，然后再进行再加热处理，进一步提高超高强带钢的可镀性。
优选的，所述移动镀后快冷段采用移动喷气快冷设备或者移动气雾冷却设备。
实施例1
一种高强带钢的制备，其产线参见图148，基板主要化学成分(mass％)为0.08％C-0.02％Si-0.85％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射辐射管预热炉预热到280℃，辐射管加热到700℃，然后横磁感应加热到800℃，在800℃下喷气辐射复合均热60秒，缓冷到675℃，高氢冷却到260℃后，先通过纵磁感应加热器(再加热设备，本实施例纵磁感应加热器不需启动)，然后经移动通道段进入过时效段在260℃左右进行过时效处理，最终喷气冷却设备冷却到145℃左右，接着最终水冷至45℃以下，中间活套通过，然后进行平整、拉矫、出***套通过、精整、卷取，完成生产。最终产品带钢屈服强度为453MPa，抗拉强度512MPa，断裂延伸率24％。
实施例2
一种高强带钢的制备，其产线参见图149，基板主要化学成分(mass％)为0.085％C-0.28％Si-2.3％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射辐射管预热炉预热到280℃，辐射管加热到710℃，然后横磁感应加热到810℃，在810℃下喷气辐射复合均热60秒，缓冷到670℃，高氢冷却到460℃后，先通过纵磁感应加热器(再加热设备，本实施例纵磁感应加热器不需启动)，进入均衡保温段在460℃均衡保温，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，从合金化加热和合金化均热段空过(设备功能不启动)，然后镀后冷却到145℃左右，接着最终水冷至45℃以下，中间活套通过、然后进行平整、出***套通过、精整、卷取，完成生产。最终产品带钢的屈服强度为912MPa，抗拉强度1093MPa，断裂延伸率9％。
实施例3
一种高强带钢的制备，其产线参见图150，基板主要化学成分(mass％)为0.080％C-0.80％Si-1.7％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热炉预热到275℃，辐射管加热到845℃，经过马弗炉(其内通入掺有微量空气的氮气)进行表面微量预氧化后，在845℃下喷气辐射复合均热60秒(均热段通入氮氢保护气体)，缓冷到680℃，高氢喷气冷却到230℃，经再加热段加热到465℃均衡保温后进入炉鼻子，然后 浸入锌锅进行热镀锌，经气刀控制镀层重量后，进行移动镀后快冷，镀后冷却到140℃左右，最终水冷到室温，中间活套通过、平整后出***套通过、精整、卷取，完成生产。最终产品的屈服强度765MPa，抗拉强度998MPa，断裂延伸率14.9％。
实施例4
一种高强带钢的制备，其产线参见图151，基板主要化学成分(mass％)为0.10％C-0.16％Si-1.90％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热炉预热到265℃，辐射管加热到800℃，接着横磁感应加热到850℃，然后在850℃下喷气辐射复合均热60秒，缓冷到730℃，接着气雾冷却至50℃左右，然后再加热到230℃经过均衡保温、二次再加热(设备功能不启用)、移动通道和过时效进行230℃过时效处理，最终喷气冷却到140℃左右最终水冷至室温，接着进行酸洗处理，然后进行闪镀镍，中间活套通过后平整、出***套通过、精整、卷取，完成生产。最终产品带钢的屈服强度为936MPa，抗拉强度1153MPa，断裂延伸率14％。
实施例5
一种高强带钢的制备，其产线参见图152，基板主要化学成分(mass％)为0.155％C-0.32％Si-2.63％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热炉预热到265℃，辐射管加热到835℃，经过马弗炉空过后，在835℃下喷气辐射复合均热40秒，缓冷到755℃，水淬至室温，酸洗，经再加热段加热到230℃，均衡保温，然后经过移动通道段进入过时效段在220℃左右进行过时效处理，最终喷气冷却到140℃左右，最终水冷到室温，中间活套通过、平整后出***套通过、精整、卷取，完成生产。最终产品的屈服强度1228MPa，抗拉强度1501MPa，断裂延伸率4.1％。
柔性化的适合于生产多种超高强带钢的冷轧后处理生产线
参见图154，本发明所述的柔性化的适合于生产多种超高强带钢的冷轧后处理生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；
所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、并联及可选设置的横磁感应加热段或马弗炉段、辐射管均热段、缓冷段、快速冷却段、再加热段，
自再加热段起设并联两路，一路为炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段，接最终水冷段；另一路为移动通道段、过时效段、最终喷气冷却段，接最终水冷段；
所述最终水冷段后依次可选设置酸洗段及可选设置闪镀段；
所述加热段采用燃烧天然气或液化石油气或煤气等气体燃料；
所述喷射辐射管预热段利用辐射管加热段或/和辐射管均热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述快速冷却段包括高氢冷却或/和气雾冷却或/和水淬冷却段。
该生产线采用喷射辐射管预热段的同时采用高氢冷却或气雾冷却或/和水淬冷却进行快速冷却处理，然后进行再加热，然后进行镀锌或过时效处理。
所述炉鼻子段与移动通道段并联布置，带钢从炉鼻子段向后通过生产热镀纯锌或者合金化热镀锌产品，带钢从移动通道段通过生产冷轧退火、或酸洗或闪镀产品。
在最终水冷段后布置酸洗段及闪镀段，带钢可以选择经过酸洗段生产冷轧酸洗产品，也可以旁通跨过酸洗段生产冷轧退火产品，带钢酸洗后还可以选择进入闪镀段，生产闪镀镍或者闪镀锌等闪镀产品。
至此，该生产线具备三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
参见图154，其所示为本发明实施例1，在实施例1中，在平整工位与出***套工位之间设置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位，可对带钢进行拉矫和/或表面后处理。
优选的，所述的马弗炉段设备前后自带密封装置，并且马弗炉段设备还配备气氛调节装置，对其内的氢气含量、氧气含量和露点可以单独进行调节控制。
参见图155，其所示为本发明实施例2，在实施例2中，在再加热段与炉鼻子段之间还布置均衡保温段，对带钢进行保温处理后再进行热镀锌。
参见图156，其所示为本发明实施例3，在实施例3中，在气刀段与镀后冷却段之间还布置移动镀后快冷段，该移动镀后快冷段与合金化加热段并联布置，实现热镀纯锌高强钢产品镀后带钢的快速冷却；优选，在气刀段的上方10米范围内设置移动镀后快冷段。
参见图157，其所示为本发明实施例4，在实施例4中，在均衡保温段之后布置二次再加热段设备，对均衡保温的带钢进行二次再加热，然后进行热镀锌或者过时效处理。
参见图158，其所示为本发明实施例5，在实施例5中，在高氢冷却或气雾冷却或/和水淬冷却段与再加热段之间布置酸洗段，该酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，对于热镀纯锌或者合金化热镀锌产品，也可以提高高强带钢特别是超高强带钢的可镀性。
参见图159，其所示为本发明实施例6，在实施例6中，在酸洗段之后再加热段之前布 置闪镀铁或闪镀镍段，然后再进行再加热处理，可以进一步提高超高强带钢的可镀性。
优选的，所述移动镀后快冷段使用可移动的喷气快冷设备或者可移动的气雾冷却设备。
实例1
一种超高强带钢的制备，其产线如图154所示，基板主要化学成分(mass％)为0.095％C-0.30％Si-1.7％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热到280℃，辐射管加热到720℃，在辐射管加热后并联布置横磁感应加热和马弗炉，本实施例带钢经横磁感应加热到820℃，在820℃下辐射管均热60秒，缓冷到670℃，本实施例快冷段并联布置高氢冷却、气雾冷却和水淬冷却，本实施例带钢高氢喷气冷却到230℃，经再加热段(再加热不需启动投入)通过移动通道进入过时效段在230℃进行过时效处理，最终喷气冷却到145℃左右，最终水冷到室温，进入中间活套，平整后拉矫，接着进入出***套，然后精整、卷取，完成生产。最终产品屈服强度765MPa，抗拉强度1026MPa，断裂延伸率12.5％。
实例2
一种超高强带钢的制备，其产线如图155所示，基板主要化学成分(mass％)为0.085％C-0.85％Si-1.8％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热到270℃，辐射管加热到810℃，本实施例辐射管加热后并联布置横磁感应加热和马弗炉，本实施例带钢经过马弗炉(其内通入掺有微量空气的氮气)进行表面微量预氧化后，在810℃下辐射管均热50秒(均热段通入氮氢保护气体)，缓冷到670℃，本实施例快冷段并联布置高氢冷却、气雾冷却和水淬冷却，本实施例带钢高氢喷气冷却到470℃，经再加热段(再加热不需启动投入)和均衡保温进入炉鼻子，然后浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化均热段(合金化加热炉离线、合金化均热炉不启用)，镀后冷却到140℃左右，最终水冷到室温，然后进入中间活套，平整后进行钝化处理，然后进入出***套，接着精整、卷取，完成生产。最终产品屈服强度781MPa，抗拉强度1015MPa，断裂延伸率13.6％。
实例3
一种超高强带钢的制备，其产线如图156所示，基板主要化学成分(mass％)为0.085％C-1.5％Si-2.3％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热到270℃，辐射管加热到810℃，本实施例辐射管加热后并联布置横磁感应加热和马弗炉，本实施例带钢经横磁感应加热器加热到910℃，在910℃下辐射管均热70秒，缓冷到675℃， 本实施例快冷段并联布置高氢冷却、气雾冷却和水淬冷却，本实施例带钢高氢喷气冷却到235℃，经再加热段加热到460℃，在460℃均衡保温，然后经过炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量，本实施例在气刀段的上方10米范围内设置移动镀后快冷段，该移动镀后快冷段与合金化加热、合金化均热并联布置，本实施例带钢经移动镀后快冷段进行快速冷却，然后进入镀后冷却段进一步冷却，接着最终水冷到室温，进入中间活套，平整后拉矫，该拉矫为强力拉矫设备，可对超高强钢进行拉矫改善板形，接着进入出***套，最后进行精整、卷取，完成生产。最终产品屈服强度671MPa，抗拉强度993MPa，断裂延伸率16.6％。
实例4
一种超高强带钢的制备，其产线如图157所示，基板主要化学成分(mass％)为0.16％C-1.8％Si-2.3％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷射辐射管预热到269℃，再辐射管加热到815℃，本实施例辐射管加热后并联布置横磁感应加热和马弗炉，本实施例带钢横磁感应加热到915℃，在915℃下辐射管均热80秒，缓冷到670℃，本实施例快冷段并联布置高氢冷却、气雾冷却和水淬冷却，本实施例带钢高氢冷却到230℃，再加热到420℃，在420℃均衡保温，然后二次再加热到460℃后经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进入合金化加热段加热到510℃，然后在505℃左右进行合金化均热20秒，接着进行镀后冷却，然后最终水冷至室温，接着进入中间活套，平整后直接进入出***套，接着精整、卷取，完成生产。最终产品带钢屈服强度为786MPa，抗拉强度1055MPa，断裂延伸率21％。
实例5
一种超高强带钢的制备，其产线如图158所示，基板主要化学成分(mass％)为：0.11％C-0.17％Si-1.95％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热到265℃，辐射管加热到820℃，本实施例辐射管加热后并联布置横磁感应加热和马弗炉，本实施例带钢横磁感应加热到920℃，然后在920℃下辐射管均热60秒，缓冷到750℃，本实施例快冷段并联布置高氢冷却、气雾冷却和水淬冷却，本实施例带钢气雾冷却到50℃左右，然后酸洗，接着再加热到230℃，经均衡保温、二次再加热(加热功能不投入)和移动通道后进入过时效段进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，接着进行酸洗处理，然后进行闪镀镍，进入中间活套，然后平整，接着进入出***套，最后进行精整、卷取，完成闪镀镍产品生产。最终产品带钢屈服强度为987MPa，抗拉强度1199MPa，断裂延伸率13.1％。
实例6
一种超高强带钢的制备，其产线如图159所示，基板主要化学成分(mass％)为0.15％C-0.3％Si-2.6％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热到275℃，辐射管加热到835℃，本实施例辐射管加热后并联布置横磁感应加热和马弗炉，本实施例带钢经过马弗炉空通后，在835℃下辐射管均热40秒，缓冷到750℃，本实施例快冷段并联布置高氢冷却、气雾冷却和水淬冷却，本实施例带钢水淬至室温，酸洗后闪镀镍，然后经再加热段加热到235℃，经均衡保温、二次再加热(二次再加热功能不投入)通过移动通道段进入过时效段在230℃左右进行过时效处理，最终喷气冷却到140℃左右，最终水冷到室温，接着带钢进入中间活套，然后平整进入出***套，最后精整、卷取，完成生产。最终产品屈服强度1286MPa，抗拉强度1502MPa，断裂延伸率4.1％。
适合生产多种高强钢的柔性化冷轧带钢后处理线
参见图160，本发明所述的适合生产多种高强钢的柔性化冷轧带钢后处理线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段或喷气辐射复合加热段、喷气辐射复合均热段、缓冷段、快速冷却段、再加热段；
自再加热段后并联布置两路产线，一路设炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段，再连接最终水冷段；另一路设移动通道段、过时效段、最终喷气冷却段，再连接所述最终水冷段；
所述最终水冷段后设可选择的酸洗段、闪镀段；
所述快速冷却段包括高氢冷却或气雾冷却或/和水淬冷却段；
所述直火加热段燃烧天然气或液化石油气等气体燃料；
所述喷射直火预热段利用直火加热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
所述的横磁感应加热段或喷气辐射复合加热段采用并联或串联布置；
在平整工位与出***套工位之间设置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位；
所述的喷气辐射复合均热段采用强制对流与辐射相结合的快速均热方式；
至此，该生产线具备三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
参见图161，其所示为本发明实施例2，实施例2是在实施例1的基础上在喷气辐射复合加热段与喷气辐射复合均热段之间设置辐射管加热段。
参见图162，其所示为本发明实施例3，实施例3是在实施例2的基础上，在再加热段与炉鼻子段之间设置均衡保温段，对带钢进行保温处理后再进行热镀锌。
参见图163，其所示为本发明实施例4，实施例4是在实施例3的基础上，在均衡保温段与炉鼻子段之间设置二次再加热段，对带钢进行二次再加热后再进行热镀锌。
参见图164，其所示为本发明实施例5，实施例5是在实施例4的基础上，在气刀段与镀后冷却段之间设置移动镀后快冷段，该移动镀后快冷段与合金化加热段并联布置，实现热镀纯锌高强钢产品镀后带钢的快速冷却；优选的，在气刀段的上方10米范围内设置移动镀后快冷段设备。
参见图165，其所示为本发明实施例6，实施例6是在实施例5的基础上，在再加热段之前设置酸洗段，该酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，对于热镀纯锌或者合金化热镀锌产品，也可以提高高强带钢特别是超高强带钢的可镀性。
参见图166，其所示为本发明实施例7，实施例7是在实施例6的基础上，在酸洗段之后再加热段之前布置闪镀铁或闪镀镍段，然后再进行再加热处理，可以进一步提高超高强带钢的可镀性。
实例1
生产一种高强带钢，其生产线布置如图160所示，基板主要化学成分(mass％)为0.09％C-0.32％Si-2.15％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到380℃，直火加热到680℃，然后喷气辐射复合加热到800℃，在800℃下喷气辐射复合均热60秒，缓冷到675℃，高氢冷却到480℃后，先通过纵磁感应加热器(再加热设备，本实施例纵磁感应加热器不需启动)，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，加热到520℃进行镀层合金化，在510℃下合金化均热20秒，再经镀后冷却设备冷却到145℃左右，接着最终水冷至45℃以下，进入中间活套，然后进行平整、表面L处理(一种合金化热镀锌产品镀层表面后处理方法)，经出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为692MPa，抗拉强度997MPa，断裂延伸率14％。
实例2
生产一种高强带钢，其生产线布置如图161所示，基板主要化学成分(mass％)为0.07％C-0.49％Si-2.10％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到 360℃，直火加热到690℃，横磁感应加热到820℃，在820℃下喷气辐射复合均热60秒，缓冷到670℃，高氢冷却到230℃后，先通过纵磁感应加热器(再加热设备，本实施例纵磁感应加热器不需启动)，再经移动通道段进入过时效段在230℃左右进行过时效处理，经最终喷气冷却到140℃左右，再经最终水冷至45℃以下，进入中间活套，然后进行强力拉矫，经出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为679MPa，抗拉强度1023MPa，断裂延伸率15％。
实例3
生产一种高强带钢，其生产线布置如图162所示，基板主要化学成分(mass％)为0.17％C-1.7％Si-2.3％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到375℃，直火加热到740℃，横磁感应加热到850℃，在850℃下喷气辐射复合均热80秒，缓冷到675℃，高氢冷却到250℃后，先通过纵磁感应加热器(再加热设备)再加热到460℃，均衡保温100秒，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉(本实施例仅空通经过，设备不需启动投入)、合金化均热炉(本实施例仅空通经过，设备不需启动投入)，经镀后冷却设备冷却到140℃左右，再经最终水冷至45℃以下，进入中间活套，然后进行平整、强力拉矫，经出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为752MPa，抗拉强度1086MPa，断裂延伸率15％。
实例4
生产一种高强带钢，其生产线布置如图163所示，基板主要化学成分(mass％)为0.18％C-1.8％Si-2.70％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到370℃，直火加热到730℃，横磁感应加热到845℃，在845℃下喷气辐射复合均热80秒，缓冷到675℃，高氢冷却到270℃后，先通过纵磁感应加热器(再加热设备)再加热到410℃，均衡保温100秒，然后二次再加热到465℃，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉加热到510℃，在合金化均热炉500℃保温20秒，再经镀后冷却设备冷却到140℃左右，再经最终水冷至45℃以下，进入中间活套，然后进行平整，经出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为938MPa，抗拉强度1216MPa，断裂延伸率16％。
实例5
生产一种高强带钢，其生产线布置如图165所示，基板主要化学成分(mass％)为0.16％C-0.50％Si-1.70％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到 360℃，直火加热到730℃，横磁感应加热到830℃，接着喷气复合加热到850℃，在850℃下喷气辐射复合均热保温60秒，缓冷到740℃后，水淬冷却到室温，进行酸洗后，再加热到230℃，经移动通道进入过时效段在230℃左右进行时效处理，然后最终喷气冷却到130℃，最后最终水冷至45℃以下，然后进行酸洗，进入中间活套，接着进行平整，经出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为1203MPa，抗拉强度1436MPa，断裂延伸率7％。
实例6
生产一种高强带钢，其生产线布置如图166所示，基板主要化学成分(mass％)为0.17％C-1.72％Si-2.65％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到372℃，直火加热到750℃，横磁感应加热到850℃，在850℃下喷气辐射复合均热80秒，缓冷到675℃，气雾冷却到260℃后，水淬至50℃左右，先进行酸洗，接着闪镀镍，再加热到400℃后，在400℃下均衡保温，实现带钢中碳元素的再分配，稳定带钢中的残余奥氏体组织，然后二次再加热到460℃，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉加热到510℃，在500℃保温18秒，再经镀后冷却到150℃以下，最后经最终水冷至45℃以下，进入中间活套，然后进行平整，经出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为988MPa，抗拉强度1201MPa，断裂延伸率16％。
我国作为世界上最大的汽车生产基地和市场，汽车轻量化发展所需的高强钢和超高强钢非常可观。在这种形势下，本发明所给出的喷射直火预热、横磁感应加热、喷气辐射复合加热和喷气辐射复合均热非常适合于生产多种超高强带钢的生产线，也非常适合生产各种高强钢和超高强钢，而且本发明的核心工艺都已实现了工业应用，在目前超高强钢市场需求逐年增加的形势下，具有非常广阔的应用前景。
柔性化的生产多种高强/超高强钢的生产线
参见图167，本发明实施例1，所述的柔性化的生产多种高强/超高强钢的生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段及两路并联设置的处理线、最终水冷段和可选择的酸洗段及闪镀段；
其中一路处理线包括炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段；另一路处理线移动通道段、过时效段、最终喷气冷却段；
所述加热段采用直火加热段和横磁感应加热段和/或喷气辐射复合加热段；
所述的横磁感应加热段与喷气辐射复合加热段采用并联或串联布置，用于带钢快速加热，优选串联布置，可以根据峰谷电价选择使用横磁感应加热，降低生产成本；
所述快速冷却段包括高氢冷却或气雾冷却或/和水淬冷却；
所述炉鼻子段与移动通道段设备并联布置，带钢从炉鼻子段向后通过生产热镀纯锌或者合金化热镀锌产品，带钢从移动通道段通过生产冷轧退火或闪镀产品；
在最终水冷段后布置可选择的酸洗段、闪镀段，带钢可以选择经过闪镀段生产冷轧闪镀镍或闪镀锌等闪镀产品，也可以旁通跨过闪镀段生产冷轧退火产品；
在平整工位与出***套工位之间还布置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位。
该生产线采用喷射直火预热段的同时采用高氢冷却或气雾冷却或/和水淬冷却进行快速冷却处理，然后进行再加热，然后进行镀锌或过时效处理；
该生产线具备至少三种或三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
优选的，所述的可选择的酸洗段设备，该酸洗段设备包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，也可以用于提高后续闪镀的镀层结合力。
参见图168，本发明实施例2，该生产线的特征在于，在喷气辐射复合加热段与辐射管均热段之间还布置辐射管加热段，带钢经横磁感应加热或者喷气辐射复合加热之后还可以进行辐射管加热，再进行辐射管均热，当然带钢喷气辐射复合加热之后也可以直接进行辐射管均热。
参见图169，本发明实施例3，所述生产线的特征在于，在再加热段与炉鼻子段之间还布置均衡保温段，对带钢进行保温处理后再进行热镀锌。
参见图170，本发明实施例4，所述生产线的特征在于，在气刀段与镀后冷却段之间还布置移动镀后快冷段，该移动镀后快冷段与合金化加热段并联布置，实现热镀纯锌高强钢产品镀后带钢的快速冷却；进一步优选地，在气刀段的上方10米范围内设置移动镀后快冷段。
参见图171，本发明实施例5，所述生产线的特征在于，所述移动镀后快冷段采用移动喷气快冷段或/和移动气雾快冷段，当同时布置移动喷气快冷段设备和移动气雾快冷段设备时，这两段设备采用并联布置，生产时选择其一实现镀后带钢的快速冷却。
参见图172，本发明实施例6，所述生产线的特征在于，在均衡保温段之后布置二次再加热段，对均衡保温的带钢进行二次再加热，然后进行热镀锌或者过时效处理。
参见图173，本发明实施例7，所述生产线的特征在于，在高氢冷却或气雾冷却或/和水淬冷却段与再加热段之间布置酸洗段，该酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元，实现带钢表面酸洗，可用于气雾冷却或/和水淬冷却后带钢表面氧化层的去除，对于热镀纯锌或者合金化热镀锌产品，也可以提高高强带钢特别是超高强带钢的可镀性。
参见图174，本发明实施例8，所述生产线的特征在于，在酸洗段之后再加热段之前布置闪镀铁或闪镀镍段，然后再进行再加热处理，可以进一步提高超高强带钢的可镀性。
实例1
参见图167，一种高强带钢的制备，基板主要化学成分(mass％)为0.08％C-0.45％Si-2.2％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到350℃，直火加热到700℃，再横磁感应加热到820℃，在820℃辐射管均热，接着缓冷到690℃，高氢冷却到490℃后，先通过纵磁感应加热器(再加热设备，本实施例纵磁感应加热器不需启动)，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉(本实施例仅空通经过，设备不需启动投入)、合金化均热炉(本实施例仅空通经过，设备不需启动投入)，经镀后冷却设备冷却到140℃左右，再经最终水冷至45℃以下，进入中间活套，然后进行平整，出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为712MPa，抗拉强度1039MPa，断裂延伸率11％。
实例2
参见图168，一种高强带钢的制备，基板主要化学成分(mass％)为0.18％C-0.4％Si-1.8％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到260℃，直火加热到630℃，再喷气辐射复合加热到750℃，接着辐射管加热到850℃，先缓冷到750℃，再气雾冷却到380℃后，接着水淬冷却到室温，再加热到230℃，经移动通道进入过时效段在230℃进行时效处理，然后最终喷气冷却到140℃，接着最终水冷至45℃以下，然后进行酸洗、闪镀镍，进入中间活套，最后进行平整，出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为1310MPa，抗拉强度1540MPa，断裂延伸率4％。
实例3
参见图169，一种高强带钢的制备，基板主要化学成分(mass％)为0.09％C-0.3％Si-2.1％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到350℃，直火加热到600℃，横磁感应加热到700℃，辐射管加热到790℃，在790℃下辐射 管均热，然后缓冷到680℃，接着高氢冷却到475℃后，先通过纵磁感应加热器(再加热设备，本实施例纵磁感应加热器不需启动)，然后在475℃均衡保温，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉(本实施例仅空通经过，设备不需启动投入)、合金化均热炉(本实施例仅空通经过，设备不需启动投入)，经镀后冷却设备冷却到140℃左右，再经最终水冷至45℃以下，进入中间活套，然后进行平整、拉矫，出***套经过后精整、卷取，完成生产。最终产品带钢屈服强度为682MPa，抗拉强度998MPa，断裂延伸率13％。
实例4
参见图170，一种高强带钢的制备，基板主要化学成分(mass％)为0.08％C-0.45％Si-2.15％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到350℃，直火加热到650℃，喷气辐射复合加热到750℃，然后辐射管加热到820℃，在820℃进行辐射管均热，然后缓冷到670℃，接着高氢冷却到320℃后，通过纵磁感应加热器再加热到460℃，在460℃均衡保温后，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入移动喷气快冷段快冷到370℃，然后进入合金化均热炉(本实施例仅空通经过，设备不需启动投入)，再经镀后冷却设备冷却到140℃左右，再经最终水冷至45℃以下，然后进入中间活套，接着进行平整，出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为681MPa，抗拉强度1022MPa，断裂延伸率12％。
实例5
参见图171，一种高强带钢的制备，基板主要化学成分(mass％)为0.09％C-0.32％Si-2.15％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到353℃，接着直火加热到615℃，再横磁感应加热到715℃，然后辐射管加热到790℃，在790℃下辐射管均热60秒，然后缓冷到675℃，接着高氢冷却到470℃后，先通过纵磁感应加热器(再加热设备，本实施例纵磁感应加热器不需启动)，在470℃均衡保温，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入移动气雾快冷段快冷到360℃，然后进入合金化均热炉(本实施例仅空通经过，设备不需启动投入)，经镀后冷却设备冷却到140℃左右，再经最终水冷至45℃以下，进入中间活套，然后进行平整、拉矫、钝化处理，出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为632MPa，抗拉强度938MPa，断裂延伸率15％。
实例6
参见图172，一种高强带钢的制备，基板主要化学成分(mass％)为0.185％C-1.7％Si-2.7％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到375℃，接着直火加热到700℃，然后横磁感应加热到800℃，接着辐射管加热到850℃，在850℃下辐射管均热80秒，然后缓冷到670℃，接着气雾冷却到260℃后，然后再加热到400℃后，在400℃下均衡保温，实现带钢中碳元素的再分配，稳定带钢中的残余奥氏体组织，然后二次再加热到460℃，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉加热到510℃，在合金化均热炉500℃保温18秒，再经镀后冷却设备冷却到150℃左右，再经最终水冷至45℃以下，进入中间活套，然后进行平整、拉矫和表面耐指纹处理，进入出***套，然后精整、卷取，完成生产。最终产品带钢屈服强度为986MPa，抗拉强度1241MPa，断裂延伸率14％。
实例7
参见图173，一种高强带钢的制备，基板主要化学成分(mass％)为0.183％C-1.71％Si-2.75％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到371℃，直火加热到740℃，生产中，对直火的空燃比进行调节，末端直火加热的空燃比由常规的0.90调整到0.95，实现带钢预氧化，在后续的辐射管均热过程中在氮氢保护气体的作用下会进行还原，提高带钢的可镀性，然后喷气辐射复合加热到810℃，接着辐射管加热到850℃，在850℃下辐射管均热80秒，缓冷到670℃，接着气雾冷却到260℃后，先进行酸洗，然后再加热到400℃后，在400℃下均衡保温，实现带钢中碳元素的再分配，稳定带钢中的残余奥氏体组织，然后二次再加热到460℃，再经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉加热到510℃，在500℃保温18秒，再经镀后冷却设备冷却到150℃左右，再经最终水冷至45℃以下，进入中间活套，然后进行平整、拉矫，进入出***套，然后精整、卷取，完成生产。最终产品带钢屈服强度为1012MPa，抗拉强度1252MPa，断裂延伸率14％。
实例8
参见图174，一种高强带钢的制备，基板主要化学成分(mass％)为0.186％C-1.76％Si-2.77％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射直火预热到376℃，直火加热到750℃，横磁感应加热到850℃，然后辐射管加热到900℃，在900℃下辐射管均热80秒，缓冷到670℃，气雾冷却到室温后，先进行酸洗，接着闪镀铁，然后再加热到400℃，在400℃下均衡保温，实现带钢中碳元素的再分配，稳定带钢中的残余奥氏体组织，通过二次再加热段(二次再加热设备不投入)经移动通道进入过时效段在400℃ 进行时效处理，然后最终喷气冷却到140℃，接着最终水冷至45℃以下，接着酸洗、闪镀镍后进入中间活套，接着进行平整，出***套通过后精整、卷取，完成生产。最终产品带钢屈服强度为1008MPa，抗拉强度1216MPa，断裂延伸率15.6％。
连退或热镀锌双用超高强带钢生产线
参见图175，其所示为本发明实施例1，在实施例1中，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段，自再加热段设两路并联布置的处理线，一路设炉鼻子段、锌锅段、气刀段设备、镀后冷却段，接最终水冷段；另一路设移动通道段、过时效段、最终喷气冷却段，接所述最终水冷段；
该生产线采用喷射直火预热对带钢进行预热，并在直火加热段后设置横磁感应加热设备进行加热温度的快速提升，并选择高氢冷却进行快速冷却；
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热；
并联布置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品；
也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联布置，移动通道段可以移动实现在线或离线位置切换，通过切断带钢重新穿带进而实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图176，本发明实施例2，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段；
自再加热段设两路并联布置的处理线，一路设炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段，接最终水冷段；另一路设移动通道段、过时效段、最终喷气冷却段，接所述最终水冷段。
该生产线中，带钢采用喷射直火预热段进行预热，并在直火加热段后设置横磁感应加 热段进行加热温度的快速提升，选择高氢冷却进行快速冷却。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联布置(炉鼻子段+锌锅段+气刀段设备+合金化加热段设备+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品。
而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段设备+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图177，其所示为本发明实施例3，在实施例3中，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、并联的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
本生产线采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，选择高氢冷却进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联布置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品，如实例1所示。
也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品，如实例2所示。
所述移动通道段与炉鼻子段并联布置，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图178，本发明实施例4，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、并联的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，选择高氢冷却进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品。
而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品。
也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图179，本发明实施例5，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却，
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却，如实施例3所示。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品。
也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图180，本发明实施例6，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却。
所述的喷射直火预热段其特征是利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品。
而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图181，本发明实施例7，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其 中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品。
也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图182，本发明实施例8，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却；其特征还为并联的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品，如实例4所示。
而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图183，本发明实施例9，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，设置并联的高氢冷却段与(气雾冷却段或/和水淬冷却段)进行快速冷却。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的并联的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)，带钢可以选择进行高氢冷却，也可以选择进行气雾冷却，也可以选择水淬冷却，还可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品。
也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图184，本发明实施例10，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，设置并联的高氢冷却段与(气雾冷却段或/和水淬冷却段)进行快速冷却。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)，带钢可以选择进行高氢冷却，也可以选择进行气雾冷却，也可以选择水淬冷却，还可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品。
而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图185，本发明实施例11，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应 加热段进行加热温度的快速提升，设置并联的高氢冷却段与(气雾冷却段或/和水淬冷却段)进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)，带钢可以选择进行高氢冷却，也可以选择进行气雾冷却，也可以选择水淬冷却，还可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品；也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径，生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图186，本发明实施例12，所述连退或热镀锌双用超高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)、酸洗段、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射直火预热段对带钢进行预热，并在直火加热段后设置横磁感应加热段进行加热温度的快速提升，设置并联的高氢冷却段与(气雾冷却段或/和水淬冷却段)进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射直火预热段利用直火加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)，带钢可以选择进行高氢冷却，也可以选择进行气雾冷却，也可以选择水淬冷却，还可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移 动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品。
而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
优选的，在气刀段后还布置移动镀后快冷段，该移动镀后快冷段可以在线、离线移动，与合金化加热段(设计为可移动的，也为检修方便)并联布置，生产热镀纯锌产品时，移动镀后快冷段在线，对镀后带钢进行快速冷却，此时合金化加热段离线，生产合金化热镀锌产品时，移动镀后快冷段离线，此时合金化加热段在线，对带钢进行合金化加热。
优选的，将辐射管均热段更换为喷气辐射复合均热段，实现带钢厚度规格变化、目标温度变化、机组速度变化等工况变化时带钢均热温度的快速调节。
优选的，在直火加热段与横磁感应加热段之间还增加设置辐射管加热段，用于带钢加热温度的进一步提升。
优选的，在酸洗段后设置闪镀镍或闪镀铁段，用于提高带钢的耐蚀性或可镀性。
优选的，在入***套工位前后均设置清洗工位，对带钢进行二次清洗，进一步提高带钢表面质量。
优选的，在卷取工位前设置精整工位，对带钢进行精整后再卷取。
优选的，在平整工位之前设置中间活套工位，以实现平整机在线更换工作辊时不损失带钢质量。
优选的，在平整工位与出***套工位之间设置可选择的拉矫工位，带钢可以拉矫后再进入出***套。
优选的，在平整工位与出***套工位之间设置可选择的钝化或耐指纹等表面后处理工位，带钢可以进行钝化或耐指纹等表面后处理，然后再进入出***套。
优选的，在平整工位与出***套工位之间同时设置可选择的拉矫工位和可选择的钝化或耐指纹等表面后处理工位，带钢可以进行钝化或耐指纹等表面后处理，然后再进入出***套。
实例1
一种带钢的生产示例，机组布置如图177所示，基板主要化学成分(mass％)为：0.16％C-1.8％Si-2.3％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到 365℃，再直火加热到750℃，接着横磁感应加热到850℃，接着在850℃下辐射管均热60秒，缓冷到675℃，高氢冷却到230℃，再加热到420℃，在420℃下均衡保温，然后二次再加热到460℃后选择热镀锌工艺路径，经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后进行镀后冷却到230℃以下，接着最终水冷至室温，平整后进入出***套，最后卷取，完成生产。最终产品带钢屈服强度为732MPa，抗拉强度1068MPa，断裂延伸率19％。
实例2
一种带钢的生产示例，机组布置如图177所示，基板主要化学成分(mass％)为：0.09％C-0.013％Si-0.95％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射直火预热到360℃，然后直火加热到750℃，接着横磁感应加热到850℃，在850℃下喷气辐射复合均热60秒，缓冷到670℃，高氢喷气冷却到230℃左右，经再加热段、均衡保温段、二次再加热段(再加热和二次再加热都不需投入)后选择连退工艺路径，经移动通道进入过时效段在230℃进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，平整后进入出***套，最后卷取，完成生产。最终产品带钢屈服强度为486MPa，抗拉强度575MPa，断裂延伸率22％。
实例3
一种带钢的生产示例，机组布置如图179所示，基板主要化学成分(mass％)为：0.12％C-0.19％Si-2.1％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射直火喷射预热到361℃，直火加热到750℃，接着横磁感应加热到850℃，然后在850℃下辐射管均热60秒，缓冷到750℃，接着先气雾冷却到500℃，后水淬至50℃左右，进行酸洗，然后再加热到235℃，经移动通道进入过时效段在235℃进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，接着平整后进入出***套，最后卷取，完成生产。最终产品带钢屈服强度为982MPa，抗拉强度1208MPa，断裂延伸率12％。
实例4
一种带钢的生产示例，机组布置如图182所示，基板主要化学成分(mass％)为：0.075％C-0.15％Si-1.70％Mn的带钢开卷、焊接、入***套通过、清洗后，采用喷射直火预热到353℃，再直火加热到750℃，然后横磁感应加热到820℃，在820℃下喷气辐射复合均热50秒，缓冷到670℃，气雾冷却到500℃，水淬冷却至室温，酸洗，再加热到200℃，经均衡保温段后二次再加热到460℃，然后经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后合金化加热到500℃，在500℃下合金化均热18秒，然后进行镀后冷却，接着最终 水冷至室温，平整后进入出***套，最后卷取，完成生产。最终产品带钢屈服强度为585MPa，抗拉强度856MPa，断裂延伸率14％。
连退或热镀锌双用高强带钢生产线
参见图187，本发明所述连退或热镀锌双用高强带钢生产线，其依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，选择高氢冷却进行快速冷却。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品。也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图188，所述连退或热镀锌双用高强带钢生产线，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，选择高氢冷却进行快速冷却。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化 加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品。
而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图189，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，选择高氢冷却进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品；也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图190，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，选择高氢冷却进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品。
而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图191，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品；也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图192，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、气雾冷却段或/和水淬冷却段、酸洗 段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品；而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图193，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品；也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺 路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图194，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，设置气雾冷却或/和水淬冷却进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的气雾冷却段或/和水淬冷却段，带钢可以选择进行气雾冷却，也可以选择水淬冷却，也可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品；而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图195，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁 感应加热段进行加热温度的快速提升，设置并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段)进行快速冷却。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
所述的并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)，带钢可以选择进行高氢冷却，也可以选择进行气雾冷却，也可以选择水淬冷却，还可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品；也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图196，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，设置并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段)进行快速冷却。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)，带钢可以选择进行高氢冷却，也可以选择进行气雾冷却，也可以选择水淬冷却，还可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品；而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产 热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
参见图197，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，设置并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段)进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)，带钢可以选择进行高氢冷却，也可以选择进行气雾冷却，也可以选择水淬冷却，还可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+镀后冷却段，即走热镀锌工艺路径，生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀纯锌工艺路径的切换。
参见图198，所述连退或热镀锌双用高强带钢生产线，包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
所述的中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、辐射管均热段或喷气辐射复合均热段、缓冷段、并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)、酸洗段、再加热段、均衡保温段、二次再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道 段+过时效段+最终喷气冷却段)、最终水冷段。
该生产线中，采用喷射辐射管预热段对带钢进行预热，并在辐射管加热段后设置横磁感应加热段进行加热温度的快速提升，设置并联设置的高氢冷却段与(气雾冷却段或/和水淬冷却段)进行快速冷却，还使用均衡保温段+二次再加热段，可以实现QP钢等高强钢的二次再加热工艺。
所述的喷射辐射管预热段利用辐射管加热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热。
并联设置高氢冷却段与(气雾冷却段或/和水淬冷却段+酸洗段)，带钢可以选择进行高氢冷却，也可以选择进行气雾冷却，也可以选择水淬冷却，还可以选择先气雾冷却后水淬冷却。
并联设置(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)，带钢可以选择走炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段，即走合金化热镀锌工艺路径，生产合金化热镀产品；而当合金化加热段+合金化均热段不启动投入时，带钢从这些工艺段设备中空过，即可生产热镀纯锌产品，也可以选择走移动通道段+过时效段+最终喷气冷却段，即走连退工艺路径生产连续退火产品。
所述的移动通道段与炉鼻子段并联，移动通道段可以移动切换到在线位置，也可以移动切换至离线位置，通过切断带钢重新穿带实现连退工艺路径与热镀锌工艺路径的切换。
实例1
一种高强带钢的生产，其机组布置如图188所示，基板主要化学成分(mass％)为0.085％C-0.16％Si-1.90％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热到270℃，再辐射管加热到750℃，然后横磁感应加热到830℃，在830℃下辐射管均热40秒，缓冷到670℃，高氢冷却到465℃，再加热段通过(再加热不投入)后走合金化热镀锌工艺路径经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后合金化加热到515℃，在510℃下合金化均热20秒，然后进行镀后冷却，接着最终水冷至室温，平整后出***套经过，最后卷取，完成生产。最终产品带钢屈服强度为582MPa，抗拉强度818MPa，断裂延伸率19％。
实例2
一种高强带钢的制备，其机组布置如图189所示，基板主要化学成分(mass％)为0.12％C-0.41％Si-1.90％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热到 280℃，再辐射管加热到710℃，然后横磁感应加热到810℃，在810℃下喷气辐射复合均热40秒，缓冷到670℃，高氢冷却到460℃，在460℃均衡保温(本实施例再加热、二次再加热的加热功能都不投入)后走热镀锌工艺路径经炉鼻子浸入锌锅热镀锌，经气刀控制镀层重量后进行镀后冷却，接着最终水冷至室温，平整后出***套经过，最后卷取，完成生产。最终产品带钢屈服强度为346MPa，抗拉强度658MPa，断裂延伸率24％。
实例3
一种高强带钢的制备，其机组布置如图190所示，基板主要化学成分(mass％)为0.19％C-1.70％Si-2.60％Mn的带钢开卷、焊接、入***套通过、清洗后，经喷射辐射管喷射预热到275℃，辐射管加热到750℃，再横磁感应加热到850℃，在850℃下辐射管均热60秒，缓冷到670温度，高氢冷却到260℃后，再加热到420℃后，在420℃下均衡保温，实现带钢中碳元素的再分配，稳定带钢中的残余奥氏体组织，然后二次再加热到465℃，走合金化热镀锌工艺路径经炉鼻子浸入锌锅进行热镀锌，经气刀控制镀层重量后，进入合金化加热炉加热到510℃，在合金化均热炉505℃保温20秒，再经镀后冷却设备冷却到140℃左右，再经最终水冷至45℃以下，然后进行平整，出***套经过后卷取，完成生产。最终产品带钢屈服强度为1063MPa，抗拉强度1196MPa，断裂延伸率14％。
实例4
一种高强带钢的生产，其机组布置如图191所示，基板主要化学成分(mass％)为0.06％C-0.010％Si-0.95％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管预热到250℃，接着辐射管加热到710℃，然后横磁感应加热到810℃，在810℃下喷气辐射复合均热60秒，缓冷到675℃，气雾冷却到500℃，然后水淬至室温，接着酸洗、再加热到230℃，然后走连退工艺路径经移动通道进入过时效段在230℃进行过时效处理，最终喷气冷却到140℃左右最终水冷至室温，接着进行平整，出***套经过后卷取，完成生产。最终产品带钢屈服强度为598MPa，抗拉强度709MPa，断裂延伸率12％
实例5
一种高强带钢的生产，其机组布置如图182所示，基板主要化学成分(mass％)为0.10％C-0.21％Si-2.2％Mn的带钢开卷、焊接、入***套通过、清洗后，喷射辐射管喷射预热到265℃，辐射管加热到830℃，接着横磁感应加热到910℃，然后在910℃下辐射管均热60秒，缓冷到700℃，接着水淬冷却到50℃左右，然后酸洗，再加热到235℃，接着走连退工艺路径经移动通道进入过时效段在235℃进行过时效处理，最终喷气冷却到140℃左 右最终水冷至室温，平整后出***套经过，最后卷取，完成生产。最终产品带钢屈服强度为1011MPa，抗拉强度1299MPa，断裂延伸率6％。
上述实施例仅仅是阐述性的，并非用于限制本发明的范围。利用本发明构思衍生变化的方案也在本申请的保护范围内。

Claims (28)

  1. 一种快速热镀锌带钢生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-出***套-平整-卷取；其中，
    所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；
    所述预热段采用喷射直火预热装置或喷气辐射复合加热装置；
    所述加热段采用直火加热段/和辐射管加热段；
    所述均热段采用辐射管均热段或喷气辐射复合均热段；
    所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
  2. 一种快速热镀锌高强带钢生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，
    所述的中央连续后处理工位依次包括预热段、辐射管加热段、横磁感应加热段、辐射管均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；
    所述预热段采用喷气辐射复合加热段或喷射辐射管预热段；
    所述的喷气辐射复合加热段利用辐射管辐射加热带钢外，还利用辐射管燃烧废气加热循环利用的氮氢保护气体或者全氢气体，再由氮氢保护气体或者全氢气体喷射到带钢上下表面实现强制对流换热；
    所述喷射辐射管预热段利用辐射管加热段和辐射管均热段燃烧废气在炉内加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
    所述均热段采用辐射管均热段或喷气辐射复合加热段；
    所述再加热段和二次再加热段均采用纵磁感应加热对带钢进行快速加热。
  3. 一种快速热镀锌超高强带钢生产线，其特征在于，
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述该中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、高氢冷却段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热；或
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段采用气雾冷却段和/或水淬冷却段；所述喷射直火预热段利用直火加热段燃烧废气加热循环利用的氮氢保护气体，再将氮氢保护气体喷射到带钢上下表面实现强制对流换热；所述再加热段和二次再加热段均采用纵磁感应加热设备对带钢进行快速加热。
  4. 一种快速退火带钢生产线，其特征在于，
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；所述中央连续后处理工位依次包括预热段、加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述预热段采用喷射直火预热装置或喷气辐射复合加热装置；所述加热段采用直火加热段和/或辐射管加热段；所述快速冷却段采用高氢冷却、或气雾冷却或水淬冷却；所述均热段采用辐射管均热或喷气辐射复合加热装置均热；或
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；所述中央连续后处理工位依次包括预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述预热段采用喷射直火预热装置或喷气辐射复合加热装置；所述加热段采用直火加热段和/或辐射管加热段；所述快速冷却段采用高氢冷却与气雾冷却或水淬冷却并联布置，或，气雾冷却与水淬冷却并联布置且气雾冷却与水淬冷却之间设连接通道，或，高氢冷却与气雾冷却、水淬冷却并联布置，且气雾冷却与水淬冷却之间设连接通道。
  5. 一种快速退火高强带钢生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷气辐射复合加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述喷气辐射复合加热段将辐射管安装到高速喷气风箱内部，将辐射管燃烧气体产生的热量通过高速高温喷气与辐射两种方式迅速的转移到带钢上去，实现带钢的快速加热；所述快速冷却段包括高氢冷却段或气雾冷却段或水淬冷却段；或，所述高氢冷却段和气雾冷却段并联布置；或，所述高氢冷却段和水淬冷却段并联布置；或，所述气雾冷却段和水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道；或，所述高氢冷却段、气雾冷却段、水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道；所述均热段采用辐射管加 热装置或喷气辐射复合加热装置。
  6. 一种快速退火超高强带钢生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段、过时效段、最终喷气冷却段、最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段采用高氢冷却段或气雾冷却段或水淬冷却段；或，高氢冷却段与气雾冷却段或水淬冷却段并联布置；或，气雾冷却段与水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道；或，高氢冷却段、气雾冷却段、水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道，高氢冷却段连接所述再加热段。
  7. 一种超短流程热镀纯锌高强带钢生产线，其特征在于，其依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，所述中央连续后处理工位依次包括快速加热工位、均热工位、快速冷却工位、表面改性工位和热镀纯锌工位；所述快速加热工位采用直火加热设备；所述均热工位采用辐射管均热装置、喷气辐射复合均热装置、或电辐射管均热设备、电阻丝均热设备或电阻带均热设备；所述快速冷却工位采用气雾冷却设备或水淬冷却设备；所述表面改性工位采用酸洗设备；所述热镀纯锌工位依次设置再加热段、炉鼻子段、锌锅段、气刀段、镀后冷却段和最终水冷段。
  8. 一种超短流程超高强带钢生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-卷取；其中，所述中央连续后处理工位依次包括快速加热工位、均热工位和快速冷却工位；所述快速加热工位采用喷气辐射复合加热装置；所述均热工位采用辐射管均热设备、喷气辐射复合均热装置、电辐射管均热设备、电阻丝均热设备或电阻带均热设备；所述快速冷却工位采用高氢冷却设备、气雾冷却设备或水淬冷却设备。
  9. 一种超短流程热镀锌高强带钢生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-中央连续后处理-出***套-平整-卷取；其中，所述中央连续后处理工位依次包括快速加热段、均热段、快速冷却段和热镀锌段；所述快速加热段采用直火加热；或，直火加热与横磁感应加热串联布置；或，直火加热、喷气辐射复合加热、横磁感应加热串联布置；所述均热段采用喷气辐射复合均热、电辐射管均热、电阻丝均热或电阻带均热；所述快速冷却段采用高氢冷却；所述热镀锌段依次设有炉鼻子、锌锅、气刀、镀后冷却设备和最终水冷设备。
  10. 一种柔性化的适合生产多种高强钢的冷轧带钢后处理生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出口 活套-精整-卷取；其中，
    所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、并联设置的可选择的横磁感应加热段或马弗炉段、喷气辐射复合均热段、缓冷段、快速冷却段、再加热段；所述快速冷却段包括高氢冷却或/和气雾冷却或/和水淬冷却段；
    所述再加热段后设炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段、最终水冷段；或，通过移动通道、过时效段、最终喷气冷却段连接至所述最终水冷段；
    最终水冷段后可选择依次设置酸洗段或酸洗段+闪镀段；带钢可以选择经过酸洗段生产冷轧酸洗产品，也可以旁通跨过酸洗段生产冷轧退火产品，带钢酸洗后还可以选择进入闪镀段，生产闪镀镍或者闪镀锌等闪镀产品；
    所述辐射管加热段燃烧天然气或液化石油气或煤气等气体燃料；
    所述喷射辐射管预热段利用加热段或/和均热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
    所述的辐射管加热段与(并联设置的可选择横磁感应加热段或马弗炉段)串联；
    所述的喷气辐射复合均热段采用强制对流与辐射相结合的方式快速均热带钢，提高带钢温度均匀性和实现带钢均热温度的快速调节；
    所述冷轧带钢后处理生产线采用喷射辐射管预热段的同时采用进行快速冷却处理，然后进行再加热，然后进行镀锌或过时效处理；
    所述炉鼻子段与移动通道并联布置，带钢从炉鼻子段向后通过生产热镀纯锌或者合金化热镀锌产品，带钢从移动通道通过生产冷轧退火或酸洗或闪镀产品。
  11. 一种柔性化的适合于生产多种超高强带钢的冷轧后处理生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；
    所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、并联及可选设置的横磁感应加热段或马弗炉段、辐射管均热段、缓冷段、快速冷却段、再加热段，
    自再加热段起设并联两路，一路为炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段，接最终水冷段；另一路为移动通道段、过时效段、最终喷气冷却段，接最终水冷段；
    所述最终水冷段后依次可选设置酸洗段及可选设置闪镀段；
    所述加热段采用燃烧天然气或液化石油气或煤气等气体燃料；
    所述喷射辐射管预热段利用加热段或/和均热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
    所述快速冷却段包括高氢冷却或/和气雾冷却或/和水淬冷却段。
  12. 一种适合生产多种高强钢的柔性化冷轧带钢后处理线，其特征在于，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；其中，
    所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段或喷气辐射复合加热段、喷气辐射复合均热段、缓冷段、快速冷却段、再加热段；
    自再加热段后并联布置两路产线，一路设炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段，再连接最终水冷段；另一路设移动通道段、过时效段、最终喷气冷却段，再连接所述最终水冷段；
    所述最终水冷段后设可选择的酸洗段、闪镀段；
    所述快速冷却段包括高氢冷却或气雾冷却或/和水淬冷却段；
    所述直火加热段燃烧天然气或液化石油气等气体燃料；
    所述喷射直火预热段利用直火加热段燃烧废气在炉内换热加热循环利用的氮氢保护气体，再由氮氢保护气体喷射到带钢上下表面实现强制对流换热；
    所述的横磁感应加热段或喷气辐射复合加热段采用并联或串联布置；
    在平整工位与出***套工位之间设置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位；
    所述的喷气辐射复合均热段采用强制对流与辐射相结合的快速均热方式；
    至此，该生产线具备三种以上可选择工艺路径，可以实现冷轧退火、酸洗、闪镀、热镀纯锌和合金化热镀锌五种不同品种高强钢的生产。
  13. 一种柔性化的生产多种高强/超高强钢的生产线，其特征在于，依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-中间活套-平整-出***套-精整-卷取；其中，
    所述中央连续后处理工位依次包括喷射直火预热段、加热段、辐射管均热段、缓冷段、快速冷却段、再加热段及两路并联设置的处理线、最终水冷段和可选择的酸洗段及闪镀段；
    其中一路处理线包括炉鼻子段、锌锅段、气刀段、合金化加热段、合金化均热段、镀后冷却段；另一路处理线移动通道段、过时效段、最终喷气冷却段；
    所述加热段采用直火加热段和横磁感应加热段和/或喷气辐射复合加热段；
    所述的横磁感应加热段与喷气辐射复合加热段采用并联或串联布置；
    所述快速冷却段包括高氢冷却或气雾冷却或/和水淬冷却；
    在平整工位与出***套工位之间还布置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位。
  14. 一种连退或热镀锌双用超高强带钢生产线，其特征在于，
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段；自再加热段设两路并联布置的处理线，一路设有炉鼻子段、锌锅段、气刀段、镀后冷却段，接最终水冷段；另一路设有移动通道段、过时效段、最终喷气冷却段，接所述最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段采用高氢冷却段或气雾冷却段或水淬冷却段；或
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、酸洗段、再加热段；自再加热段设两路并联布置的处理线，一路设有炉鼻子段、锌锅段、气刀段、镀后冷却段，接最终水冷段；另一路设有移动通道段、过时效段、最终喷气冷却段，接所述最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段采用气雾冷却段或/和水淬冷却段；或
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射直火预热段、直火加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、酸洗段、再加热段；自再加热段设两路并联布置的处理线，一路设有炉鼻子段、锌锅段、气刀段、镀后冷却段，接最终水冷段；另一路设有移动通道段、过时效段、最终喷气冷却段，接所述最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段采用高氢冷却段、气雾冷却段或/和水淬冷却段，且，高氢冷却段与气雾冷却段或/和水淬冷却段并联布置，高氢冷却段连接所述再加热段。
  15. 一种连退或热镀锌双用高强带钢生产线，其特征在于，
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、再加热段、并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段包括高氢冷却段或/和气雾冷却段或/和水淬冷却段；或
    依次包括以下工位：开卷-焊接-入***套-清洗-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括喷射辐射管预热段、辐射管加热段、横磁感应加热段、均热段、缓冷段、快速冷却段、酸洗段、再加热段、并联设置的(炉鼻 子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段；所述均热段采用辐射管均热段或喷气辐射复合均热段；所述快速冷却段包括高氢冷却段或/和气雾冷却段或/和水淬冷却段；或，气雾冷却段与水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道；或，高氢冷却段与气雾冷却段、水淬冷却段并联布置，且，气雾冷却段与水淬冷却段之间设置连接通道，高氢冷却段连接所述再加热段。
  16. 如权利要求1～15中任一项所述的生产线，其特征在于：
    (1)所述喷射直火预热装置包括：直火炉、预热炉；其中，
    所述直火炉包括：
    炉壳，其上下端分别设置炉顶辊室、炉底辊室；炉顶辊室、炉底辊室内分别设置转向辊；炉壳内沿高度方向设置若干直火加热区，直火加热区内设置若干直火烧嘴；炉壳上部侧壁设至少两个通孔，且左右对称设置；
    所述预热炉包括：
    炉体，其上部侧壁设至少两个连接孔，且左右对称设置，并分别通过连通管连接所述直火炉炉壳上部的通孔；炉体顶端设与所述直火炉炉顶辊室对应、供带钢穿过的炉喉；炉体底部设带钢入口及相应的密封装置和转向辊；炉体内上部设一穿带孔的上隔板，形成直火废气上集气室；直火废气上集气室下方设直火燃烧废气二次燃烧室，直火燃烧废气二次燃烧室内设至少一只明火烧嘴；优选的，所述直火燃烧废气二次燃烧室内还设置燃烧废气测温计；炉体内下部设一带穿带孔的下隔板，形成直火废气下集气室，并通过一废气排出管道连接一废气风机；所述废气排出管道上设置控制阀；
    若干换热与喷气风箱单元，沿炉体高度方向设置于所述炉体内直火燃烧废气二次燃烧室下方的两侧，中间形成供带钢穿过的穿带通道；每个换热与喷气风箱单元包括，
    风箱体，其内竖直设置若干热交换管，风箱体相对所述穿带通道的一侧面设置若干喷嘴；上下设置的风箱体之间设置与热交换管连通的废气二次混合室；风箱体内通入氮氢保护气体；
    循环风机，其进口管道的端口设置于所述穿带通道内，其出口管道的端口位于风箱体内；
    若干可供带钢穿过的密封装置，分别设置于所述穿带通道的上下端口处及上、下隔板的穿带孔处；优选的，所述密封装置为氮气密封结构，采用氮气密封室，其上设有氮气注入管道；
    (2)所述喷射辐射管预热装置包括：
    辐射管加热炉，炉体上方设炉顶辊室，炉顶辊室内设置转向辊；
    辐射管废气集气室，通过连接管道连接所述辐射管加热炉炉体；
    预热炉，包括：
    预热炉炉体，其上部侧壁设一连接孔，并通过连通管连通所述辐射管废气集气室；预热炉炉体顶端设与所述辐射管加热炉炉顶辊室对应、供带钢穿过的炉喉；预热炉炉体底部设带钢入口及入口密封装置和入口转向辊；预热炉炉体内上部设预热炉集气室；预热炉炉体内下部设一带穿带孔的下隔板，形成废气集气室，并通过一废气排出管道连接一废气风机；所述废气排出管道上设置控制阀；
    若干换热与喷气风箱单元，沿炉体高度方向设置于所述预热炉炉体内预热炉集气室下方的两侧，中间形成供带钢穿过的穿带通道；每个换热与喷气风箱单元包括，
    风箱体，其内竖直设置若干热交换管，风箱体相对所述穿带通道的一侧面设置若干喷嘴；上下设置的风箱体之间设置与热交换管连通的废气二次混合室；风箱体内通入保护气体，优选通入氮氢保护气体；
    循环风机，其进口管道的端口设置于所述穿带通道内，其出口管道的端口位于风箱体内；
    可供带钢穿过的密封装置，分别设置于所述穿带通道的下端口及下隔板的穿带孔处；优选的，所述入口密封装置、可供带钢穿过的密封装置为氮气密封结构，采用氮气密封室，其上设有氮气注入管道。
    (3)所述喷气辐射复合加热/均热装置包括：
    炉体，其内沿高度方向设置复合加热体；所述复合加热体，包括，
    保温箱体，其壳体内壁设保温材料；保温箱体的一侧面中央设安装孔；
    循环风机，设置于所述保温箱体安装孔处，其吸风口对应安装孔轴线，出风口设于机壳侧面；
    缓冲腔体，设置于所述保温箱体内对应循环风机吸风口处，缓冲腔体背面设与循环风机吸风口对应的热风出口，缓冲腔体正面设热风进口；优选的，所述缓冲腔体与喷气风箱为一体结构；
    两喷气风箱，竖直对称设置于所述保温箱体内缓冲腔体正面热风进口的两侧，形成供带钢穿过的穿带通道；位于该穿带通道两侧的两喷气风箱的一侧面沿高度方向间隔设置若干***流喷嘴，且，n***流喷嘴之间设置一间隙，n≥1；优选的，所述射流喷嘴直径为射流喷嘴到带钢的距离的1/10～1/5；更优选的，所述射流喷嘴采用圆孔结构；
    若干辐射管，对称设置于所述两喷气风箱内，所述辐射管包括连接喷嘴的连接管段、自连接管段一端弯折延伸的辐射管段、自辐射管段一端延伸弯折形成的换热管段；所述辐射管段对应所述喷气风箱中n***流喷嘴之间设置的间隙，形成喷气与辐射交替结构；优选的，所述辐射管的辐射管段、连接管段、换热管段为平行设置。
  17. 如权利要求1、2、3或16所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段；使热镀锌为合金化热镀锌；
    所述中央连续后处理工位的气刀段备后设置可在线/离线切换的移动镀后快冷段，任选地，该移动镀后快冷段与合金化加热段并列布置；
    在入***套工位之前设置清洗工位，或，入***套工位的前、后分别设置清洗工位；
    平整工位前、中央连续后处理工位之后设置中央活套；
    在卷取工位与出***套工位之间设置精整工位；
    在平整工位与出***套工位之间设置拉矫工位；
    在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位；
    在平整工位与出***套工位之间同时设置拉矫工位和钝化或耐指纹等表面后处理工位；和
    所述快速热镀锌超高强带钢生产线中，在酸洗段之后增加闪镀铁或闪镀镍段。
  18. 如权利要求4、5、6或16所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    在最终水冷段后设置可选择的酸洗段；
    在酸洗段之后还设置可选择的闪镀段；
    在焊接工位与入***套工位之间设置清洗工位，优选地，在入***套工位的前、后均设置清洗工位；
    在卷取工位前设置精整工位；
    在平整工位之前设置中间活套工位；
    在平整工位与出***套工位之间设置拉矫工位；
    在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，或，在平整工位与出***套工位之间同时设置拉矫工位设备和钝化或耐指纹等表面后处理工位。
  19. 如权利要求7和16中任一项所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    所述快速加热工位依次设置直火加热设备和横磁感应加热设备；
    所述表面改性工位中，在酸洗段后还设置可选择的闪镀铁或闪镀镍设备，再接后续的所述热镀纯锌工位；
    所述热镀纯锌工位中，在气刀段与镀后冷却段之间还可选择地设置移动镀后快冷设备；
    将所述的热镀纯锌工位更换为合金化热镀锌工位，即在气刀段与镀后冷却段之间设置 合金化加热段、合金化均热段；
    所述热镀锌工位，在气刀段后，与合金化加热段并列设置可选择的移动镀后快冷段；
    在焊接工位与入***套工位之间设置清洗工位；或，在入***套工位之后设置清洗工位；
    在平整工位前设置中央活套设备；
    在卷取工位与出***套工位之间设置精整工位，带钢精整后再进行卷取；
    在平整工位与出***套工位之间设置拉矫工位；
    在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位设备；或，在平整工位与出***套工位之间同时设置拉矫工位和钝化或耐指纹等表面后处理工位。
  20. 如权利要求8和16中任一项所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    所述快速加热工位采用喷气辐射复合加热装置与横磁感应加热设备串联布置，且，所述快速冷却工位采用气雾冷却设备与水淬冷却设备串联或并联布置，或为高氢冷却设备与水淬冷却设备并联布置，或为高氢冷却设备与气雾冷却设备并联布置，或为高氢冷却设备、气雾冷却设备与水淬冷却设备并联布置；
    在焊接工位与入***套工位之间设置可选择的清洗工位；
    所述快速加热工位采用并联设置可选择的直火加热设备与串联设置的喷气辐射复合加热装置+横磁感应加热设备，带钢先经过直火加热设备再经串联设置的喷气辐射复合加热装置+横磁感应加热设备加热，或旁通跳过直火加热设备直接进入串联设置的喷气辐射复合加热装置+横磁感应加热设备进行加热；或所述快速加热工位采用可选择的纵磁感应加热设备与串联设置的喷气辐射复合加热装置+横磁感应加热设备并联或串联布置，带钢先经过纵磁感应加热设备加热，或旁通跳过纵磁感应加热设备直接进入串联布置的喷气辐射复合加热装置+横磁感应加热进行加热；
    在入***套工位之后设置可选择的清洗工位；
    卷取工位前、中央连续后处理工位后设置可选择的酸洗段；优选的，所述的酸洗段之后、卷取工位之前设置可选择的闪镀段；
    在卷取工位前设置平整工位；
    在卷取工位与平整工位之间设置精整工位。
  21. 如权利要求9和16中任一项所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    所述热镀锌段中，气刀与镀后冷却设备之间设置合金化加热设备、合金化均热设备，实现合金化热镀锌产品生产；
    所述热镀锌段中，在气刀后、镀后冷却设备前设置可选择的移动镀后快冷设备；
    在焊接工位与入***套工位之间设置可选择的清洗工位；或，入***套工位之后设置可选择的清洗工位；
    平整工位前、中央连续后处理工位之后设置中央活套工位；
    在卷取工位与出***套工位之间设置精整工位；
    在平整工位与出***套工位之间设置拉矫工位；
    在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位，或，在平整工位与出***套工位之间还同时设置拉矫工位和钝化或耐指纹等表面后处理工位，带钢可以选择进行拉矫或/和钝化或耐指纹等表面处理再进入出***套工位。
  22. 如权利要求10、11和16中任一项所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    在平整工位与出***套工位之间还布置可选择的拉矫工位和/或钝化或耐指纹等表面后处理工位，对带钢进行拉矫和/或表面后处理；
    所述的马弗炉段前后自带密封装置，并且马弗炉段还配备气氛调节装置，对其内的氢气含量、氧气含量和露点可以单独进行调节控制；
    在再加热段与炉鼻子段之间还布置均衡保温段，对带钢进行保温处理后再进行热镀锌；
    在气刀段与镀后冷却段之间还布置移动镀后快冷段，该移动镀后快冷段与合金化加热并联布置，实现热镀纯锌高强钢产品镀后带钢的快速冷却；优选的，在气刀段的上方10米范围内设置移动镀后快冷段；
    在均衡保温段之后布置二次再加热段，对均衡保温的带钢进行二次再加热，然后进行热镀锌或者过时效处理；
    在所述快速冷却段与再加热段之间布置酸洗段，该酸洗段设备包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元；
    在酸洗段之后布置闪镀铁或闪镀镍段，然后再进行再加热处理；
    所述移动镀后快冷段采用移动喷气快冷或者移动气雾冷却。
  23. 如权利要求12和16中任一项所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    在喷气辐射复合加热段与喷气辐射复合均热段之间设置辐射管加热段；
    在再加热段与炉鼻子段之间布置均衡保温段；
    在均衡保温段之后布置二次再加热段，二次再加热段连接所述移动通道段、炉鼻子段；
    在气刀段与镀后冷却段之间设置移动镀后快冷段，该移动镀后快冷段与合金化加热设备并联布置；优选的，在气刀段的上方10米范围内设置移动镀后快冷段；
    在所述快速冷却段与再加热段之间设置酸洗段，该酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元；
    在酸洗段之后再加热段之前设置闪镀铁或闪镀镍段，再连接所述再加热段。
  24. 如权利要求13和16中任一项所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    所述的可选择的酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元；
    在喷气辐射复合加热段与辐射管均热段之间设置辐射管加热设备；
    在再加热段与炉鼻子段之间设置均衡保温段；
    在气刀段与镀后冷却段之间设置移动镀后快冷段设备，该移动镀后快冷段与合金化加热段并联布置；优选，在气刀段的上方10米范围内设置移动镀后快冷段设备；
    所述移动镀后快冷段采用移动喷气快冷段或/和移动气雾快冷段；当同时设置移动喷气快冷段和移动气雾快冷段时，移动喷气快冷段和移动气雾快冷段采用并联布置；
    在均衡保温段之后设置二次再加热段，对均衡保温的带钢进行二次再加热，然后进行热镀锌或者过时效处理；
    在快速冷却段与再加热段之间设置酸洗段，该酸洗段包括酸洗单元、热水刷洗单元、热水漂洗单元、热风烘干单元；
    所述加热段中，在酸洗段之后再加热段之前还设置闪镀铁/闪镀镍段，用于提高带钢的可镀性。
  25. 如权利要求14和16中任一项所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    所述再加热段后依次设置均衡保温段、二次再加热段，二次再加热段再接所述的两路并联布置的处理线；
    热镀锌为合金化热镀锌，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段；
    在气刀段后还布置移动镀后快冷段，该移动镀后快冷段可以在线、离线移动，与合金化加热段并联布置；
    在直火加热段与横磁感应加热段之间还增设辐射管加热段；
    在入***套工位的前后均设置清洗工位；
    在卷取工位前设置精整工位；
    在平整工位之前还设置中间活套工位；或，在平整工位与出***套工位之间设置可选择的拉矫工位；
    在平整工位与出***套工位之间设置可选择的钝化或耐指纹等表面后处理工位；或， 在平整工位与出***套工位之间同时设置可选择的拉矫工位和可选择的钝化或耐指纹等表面后处理工位。
  26. 如权利要求15和16中任一项所述的生产线，其特征在于，所述生产线具有以下任意一项或多项特征：
    所述再加热段后设均衡保温段、二次再加热段，二次再加热段再连接所述并联设置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)。
    热镀锌为合金化热镀锌，所述气刀段与镀后冷却段之间设置合金化加热段、合金化均热段；
    在气刀段后还布置可移动的镀后快冷段，且，与合金化加热段并联布置，使移动镀后快冷段形成在线、离线切换设计；
    在再加热段前设置闪镀镍或闪镀铁段；
    在入***套工位的前、后均设置清洗工位；
    在卷取工位前设置精整工位；
    在平整工位之前设置中间活套工位；
    在平整工位与出***套工位之间设置可选择的拉矫工位；
    在平整工位与出***套工位之间设置可选择的钝化或耐指纹等表面后处理工位，或，在平整工位与出***套工位之间同时设置可选择的拉矫工位设备和可选择的钝化或耐指纹等表面后处理工位，带钢进行钝化或耐指纹等表面后处理后再进入出***套。
  27. 一种超短流程双用带钢生产线，其特征是，
    依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段；或
    依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段；或
    依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水 冷段；或
    依次包括以下工位：开卷-焊接-入***套-中央连续后处理-平整-出***套-卷取；其中，所述中央连续后处理工位依次包括横磁感应加热段、辐射管均热段、气雾冷却段或/和水淬冷却段、酸洗段、再加热段、均衡保温段、二次再加热段、并联布置的(炉鼻子段+锌锅段+气刀段+合金化加热段+合金化均热段+镀后冷却段)与(移动通道段+过时效段+最终喷气冷却段)、最终水冷段。
  28. 如权利要求27所述的生产线，其特征在于，所述生产线具有以下一项或多项特征：
    在气刀段后设置可在线、离线切换、可移动的镀后快冷段，并与合金化加热段并联布置；
    在焊接工位与入***套工位之间设置可选择的清洗工位，带钢可以选择经过清洗工位进行清洗，也可以旁通跳过该清洗工位；入***套工位之后设置可选择的清洗工位，带钢可以选择经过清洗工位设备进行清洗，也可以旁通跳过该清洗工位；或在入***套工位之前和之后均设置清洗工位，对带钢进行二次清洗；
    在横磁感应加热段设备之前设置纵磁感应加热段，带钢先经过纵磁感应加热段，可以选择纵磁感应加热，也可以从纵磁感应加热段空过直接进入横磁感应加热段进行加热；
    在所述的酸洗段设备之后设置闪镀铁或镍段工位；
    在卷取工位前设置精整工位；
    在平整工位之前设置中间活套工位；
    在平整工位与出***套工位之间设置拉矫工位；
    在平整工位与出***套工位之间设置钝化或耐指纹等表面后处理工位；
    在平整工位与出***套工位之间同时设置拉矫工位和钝化或耐指纹等表面后处理工位。
PCT/CN2023/119209 2022-09-15 2023-09-15 快速热处理带钢生产线 WO2024056085A1 (zh)

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