WO2023035368A1 - Horizontal bright annealing apparatus for stainless steel - Google Patents

Horizontal bright annealing apparatus for stainless steel Download PDF

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Publication number
WO2023035368A1
WO2023035368A1 PCT/CN2021/125300 CN2021125300W WO2023035368A1 WO 2023035368 A1 WO2023035368 A1 WO 2023035368A1 CN 2021125300 W CN2021125300 W CN 2021125300W WO 2023035368 A1 WO2023035368 A1 WO 2023035368A1
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section
bright
stainless steel
furnace
uncoiler
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PCT/CN2021/125300
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French (fr)
Chinese (zh)
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李春明
张毅
廖砚林
黎志明
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中冶南方工程技术有限公司
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Publication of WO2023035368A1 publication Critical patent/WO2023035368A1/en

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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0081—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for slabs; for billets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/562—Details
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/19—Iron or steel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to the field of stainless steel bright annealing, in particular to a stainless steel horizontal bright annealing equipment.
  • the existing stainless steel cold-rolled annealing is generally realized by annealing pickling unit and bright annealing unit, but there are some problems.
  • Annealing and pickling units have high production costs and high pollution problems; the current bright annealing units, whether they are vertical bright annealing units or horizontal bright annealing units, have extremely low production capacity.
  • the large vertical bright annealing units are all single-pass heating annealing furnaces, with a production capacity of 60,000 to 80,000 tons per year, and most of the horizontal bright annealing units are 10,000 to 100,000 tons per year.
  • the invention aims to provide a stainless steel horizontal bright annealing equipment to solve the problem of low production capacity of existing annealing pickling units and bright annealing units.
  • a stainless steel horizontal bright annealing equipment including an uncoiling section, a cleaning section, a process section, a smoothing section and a rolling section arranged in sequence along the process flow direction;
  • the uncoiler section includes a first uncoiler, a second uncoiler and a welding machine.
  • the first uncoiler and the second uncoiler are arranged side by side at the front end of the welder, and the first uncoiler is equipped with a first inlet shear and a second
  • the uncoiler is equipped with a second entrance shear;
  • the cleaning section includes an lye spraying device, an lye scrubbing unit, a water scrubbing device and a water rinsing device arranged in sequence;
  • the front section of the process section is provided with an inlet looper, and the process section is composed of a bright furnace inlet sealing device, a bright furnace inlet sealing shell, a bright furnace preheating section, a bright furnace heating section, a bright furnace cooling section, and a bright furnace outlet sealing shell Body and bright furnace outlet sealing device;
  • the front section of the leveling section is provided with an outlet looper, and the leveling section and the roll-up section are respectively provided with a leveling machine and a coiler.
  • the pressure of the nozzle of the last-stage spray pipe of the lye spraying is not less than 200 kg, and the lye scrubbing and water scrubbing are provided with 2 or more brush rollers, and the diameter of the bristles is 0.2 mm to 0.55 mm.
  • the water rinsing adopts 3-stage or 4-stage rinsing, and the nozzle pressure of the last stage is not less than 200 kg.
  • disc rollers are arranged between the bright furnace preheating section, bright furnace heating section and bright furnace cooling section, and the disc rollers are sealed with the furnace shell.
  • the annealing furnace has a hydrogen protective gas with a concentration of 75%-100%.
  • inlet and outlet sealing devices of the annealing furnace are sealed with nitrogen.
  • front section and the rear section of the entrance looper are respectively provided with a front tension roller of the entrance looper and a rear tension roller of the entrance looper.
  • front section and the back section of the outlet looper are respectively provided with a front tension roller of the outlet looper and a front tension roller of the smoothing machine.
  • the tempering machine is a double-frame tempering machine, and tension rollers or non-tension rollers can be arranged between the two frames.
  • the stainless steel horizontal bright annealing equipment provided by the present invention has the following advantages: the stainless steel horizontal bright annealing equipment provided by the present invention connects multiple processes such as cleaning section, annealing and smoothing together to form a continuous unit for direct production 2B/BA surface stainless steel products, saves the transportation of steel coils between processes, improves the finished product rate, and saves factory construction land and engineering investment to a large extent; at the same time, the invention can greatly increase production capacity, and can completely replace stainless steel annealing and pickling units. Solve environmental problems.
  • Fig. 1 shows a schematic diagram of a stainless steel horizontal bright annealing equipment.
  • the present invention provides a stainless steel horizontal bright annealing equipment, which is suitable for the production of steel grades such as stainless steel 200/300/400 series with a thickness of 0.15 mm to 3.0 mm and a width of 800 to 1600 mm.
  • the surface is 2B or BA grade.
  • the stainless steel horizontal bright annealing equipment includes an uncoiling section, a cleaning section, a process section, a smoothing section and a rolling section arranged in sequence along the process flow direction.
  • the uncoiling section includes a first uncoiler 1, a second uncoiler 2 and a welding machine 5, the first uncoiler 1 and the second uncoiler 2 are arranged side by side, and the first uncoiler 1 is equipped with a first inlet shear 3, the second The second uncoiler 2 is equipped with a second inlet shear 4.
  • the raw steel coil is uncoiled through the first uncoiler 1 and the second uncoiler 2, and unqualified tape heads and strips are removed at the first inlet shear 3 and the second inlet shear 4. Tail, realize welding at welding machine 5.
  • the strip steel after welding is cleaned through the cleaning section 6, and the cleaning section is composed of lye spraying, lye scrubbing, water scrubbing and water rinsing.
  • the nozzle pressure of the nozzle of the last stage of lye spraying reaches 200 kg.
  • Two or more brush rollers are installed for lye scrubbing and water scrubbing.
  • the diameter of the bristles is 0.2mm to 0.55mm.
  • the pressure of the primary nozzle reaches 200 kg; to make the strip surface clean after cleaning, and the residual oil and residual iron on the surface are less than 5mg/m 2 .
  • the cleaned strip enters the process section through the entrance loop 8, and the front and rear sections of the entrance loop 8 are respectively provided with a tension roller 7 before the entrance loop and a tension roller 9 after the entrance loop to ensure the tension of the strip entering the process section. Tightness.
  • the process section consists of bright furnace inlet sealing device 10, bright furnace inlet sealing shell 11, bright furnace preheating section 12, bright furnace heating section 13, bright furnace cooling section 14, bright furnace outlet sealing shell 15 and bright furnace outlet sealing device 16 components; disc rollers are set between the bright furnace preheating section 12, bright furnace heating section 13 and bright furnace cooling section 14 for quick replacement of support rollers.
  • the support rollers on the disc rollers are made of high temperature resistant steel rollers or ceramics A seal is provided between the roller or the fiber roller, the disc roller and the furnace shell.
  • the heating of the annealing furnace adopts natural gas heating, coal gas heating or electric heating, and muffles or no muffles are set in the annealing furnace.
  • the protective gas of the annealing furnace is hydrogen with a concentration of 75% to 100%.
  • the inlet and outlet sealing devices of the annealing furnace are sealed with nitrogen, and the annealing inlet and outlet sealing devices are sealed with vertical pinch rollers and nitrogen protection.
  • the leveling section is equipped with a double-stand leveling machine 20, and the strip steel entering the leveling section sets the roughness of the leveling roller according to the product surface grade requirements, and decides to use a single-frame leveling or double-frame leveling according to the steel type, such as 400 series stainless steel Two-frame leveling is used to achieve an optimal surface.
  • the tempering machine adopts two-roll or four-roll tempering machine, and the tempering machine can be a double frame or a single frame. If a double frame tempering machine is installed, tension rollers or no tension rollers can be set between the two frames .
  • the flattened steel strip is cut by the outlet shears 22, and enters the coiler 23 for coiling to complete the bright annealing process.
  • the stainless steel horizontal bright annealing equipment connects multiple processes such as cleaning section, annealing and smoothing together to form a continuous unit, which directly produces 2B/BA surface stainless steel products, saves the transportation of steel coils between processes, and improves the yield , to a great extent save the factory construction land and engineering investment.
  • the invention can greatly increase the production capacity, at least 200,000 tons per year, can completely replace the stainless steel annealing and pickling unit, and solve the environmental protection problem.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

A horizontal bright annealing apparatus for stainless steel, comprising an uncoiling section, a cleaning section, a process section, a flattening section, and a coiling section which are sequentially arranged along a process flow direction. A plurality of procedures such as the cleaning section, annealing, and flattening are connected together to form a continuous unit, a 2B/BA surface stainless steel product is directly produced, the transportation of steel coils among the procedures is omitted, the yield is improved, and factory construction land and project investment are saved to a great extent; moreover, the productivity can be greatly improved, a stainless steel annealing-pickling unit can be comprehensively replaced, and the environmental protection problem is solved.

Description

一种不锈钢卧式光亮退火设备A stainless steel horizontal bright annealing equipment 技术领域technical field
本发明涉及不锈钢光亮退火领域，具体是涉及一种不锈钢卧式光亮退火设备。The invention relates to the field of stainless steel bright annealing, in particular to a stainless steel horizontal bright annealing equipment.
背景技术Background technique
现有不锈钢冷轧退火一般是采用退火酸洗机组和光亮退火机组来实现，但均存在一些问题。退火酸洗机组存在生产成本高、高污染问题；目前的光亮退火机组，无论是立式光亮退火，还是卧式光亮退火机组，其产能特别低。大型立式光亮退火机组全部为单道次加热退火炉，产能在6～8万吨/年，卧式光亮退火机组产能大多为1～10万吨/年。现有的一些不锈钢生产厂的卧式光亮退火机组大多无脱脂段、无活套以及没有设置平整机，产能低，且卧式退火炉入口和出口无立式密封，其气氛控制难度大。The existing stainless steel cold-rolled annealing is generally realized by annealing pickling unit and bright annealing unit, but there are some problems. Annealing and pickling units have high production costs and high pollution problems; the current bright annealing units, whether they are vertical bright annealing units or horizontal bright annealing units, have extremely low production capacity. The large vertical bright annealing units are all single-pass heating annealing furnaces, with a production capacity of 60,000 to 80,000 tons per year, and most of the horizontal bright annealing units are 10,000 to 100,000 tons per year. Most of the horizontal bright annealing units in some existing stainless steel production plants have no degreasing section, no looper and no tempering machine, the production capacity is low, and there is no vertical seal at the inlet and outlet of the horizontal annealing furnace, and the atmosphere control is difficult.
发明内容Contents of the invention
本发明旨在提供一种不锈钢卧式光亮退火设备，以解决现有退火酸洗机组和光亮退火机组产能低的问题。The invention aims to provide a stainless steel horizontal bright annealing equipment to solve the problem of low production capacity of existing annealing pickling units and bright annealing units.
具体方案如下：The specific plan is as follows:
一种不锈钢卧式光亮退火设备，包括沿工艺流程方向依序布设的开卷段、清洗段、工艺段、平整段和卷起段；A stainless steel horizontal bright annealing equipment, including an uncoiling section, a cleaning section, a process section, a smoothing section and a rolling section arranged in sequence along the process flow direction;
所述开卷段包括第一开卷机、第二开卷机和焊机，所述第一开卷机、第二开卷机在焊机前端并列设置，且第一开卷机配置有一第一入口剪，第二开卷机配置有一第二入口剪；The uncoiler section includes a first uncoiler, a second uncoiler and a welding machine. The first uncoiler and the second uncoiler are arranged side by side at the front end of the welder, and the first uncoiler is equipped with a first inlet shear and a second The uncoiler is equipped with a second entrance shear;
所述清洗段包括依序设置的碱液喷洗装置、碱液刷洗组昂在、水刷洗装置和水漂洗装置；The cleaning section includes an lye spraying device, an lye scrubbing unit, a water scrubbing device and a water rinsing device arranged in sequence;
所述工艺段前段设置有入***套，所述工艺段由光亮炉入口密封装置、光亮炉入口密封壳体、光亮炉预热段、光亮炉加热段、光亮炉冷却段、光亮炉出口密封壳体和光亮炉出口密封装置组成；The front section of the process section is provided with an inlet looper, and the process section is composed of a bright furnace inlet sealing device, a bright furnace inlet sealing shell, a bright furnace preheating section, a bright furnace heating section, a bright furnace cooling section, and a bright furnace outlet sealing shell Body and bright furnace outlet sealing device;
所述平整段前段设置有出***套，所述平整段和卷起段分别设置有平整机和卷取机。The front section of the leveling section is provided with an outlet looper, and the leveling section and the roll-up section are respectively provided with a leveling machine and a coiler.
进一步的，所述清洗段这碱液喷洗最后一级喷管的喷嘴压力不小于200公斤，所述碱液刷洗和水刷洗设置2支及以上刷辊，刷毛直径为0.2mm～0.55mm，所述水漂洗采用3级或者4级漂洗，最后一级喷嘴压力不小于200公斤。Further, in the cleaning section, the pressure of the nozzle of the last-stage spray pipe of the lye spraying is not less than 200 kg, and the lye scrubbing and water scrubbing are provided with 2 or more brush rollers, and the diameter of the bristles is 0.2 mm to 0.55 mm. The water rinsing adopts 3-stage or 4-stage rinsing, and the nozzle pressure of the last stage is not less than 200 kg.
进一步的，所述光亮炉预热段、光亮炉加热段和光亮炉冷却段之间设置圆盘辊，且所述圆盘辊与炉壳之间密封设置。Further, disc rollers are arranged between the bright furnace preheating section, bright furnace heating section and bright furnace cooling section, and the disc rollers are sealed with the furnace shell.
进一步的，所述退火炉内具有浓度为75％～100％的氢气保护气体。Further, the annealing furnace has a hydrogen protective gas with a concentration of 75%-100%.
进一步的，所述退火炉入口和出口密封装置采用氮气密封。Further, the inlet and outlet sealing devices of the annealing furnace are sealed with nitrogen.
进一步的，所述入***套前段和后段分别设置有入***套前张力辊和入***套后张力辊。Further, the front section and the rear section of the entrance looper are respectively provided with a front tension roller of the entrance looper and a rear tension roller of the entrance looper.
进一步的，所述出***套的前段和后段还分别设置有出***套前张力辊和平整机前张力辊。Further, the front section and the back section of the outlet looper are respectively provided with a front tension roller of the outlet looper and a front tension roller of the smoothing machine.
进一步的，所述平整机为双机架平整机，两个机架之间可以设置张力辊或无张力辊。Further, the tempering machine is a double-frame tempering machine, and tension rollers or non-tension rollers can be arranged between the two frames.
本发明提供的不锈钢卧式光亮退火设备与现有技术相比较具有以下优点：本发明提供的不锈钢卧式光亮退火设备将清洗段、退火和平整等多个工序连接 在一起组成连续机组，直接生产2B/BA表面不锈钢产品，省去工序间钢卷的调运，提高了成材率，很大程度上节约工厂建设用地和工程投资；同时本发明可以大大提高产能，可以全面代替不锈钢退火酸洗机组，解决环保问题。Compared with the prior art, the stainless steel horizontal bright annealing equipment provided by the present invention has the following advantages: the stainless steel horizontal bright annealing equipment provided by the present invention connects multiple processes such as cleaning section, annealing and smoothing together to form a continuous unit for direct production 2B/BA surface stainless steel products, saves the transportation of steel coils between processes, improves the finished product rate, and saves factory construction land and engineering investment to a large extent; at the same time, the invention can greatly increase production capacity, and can completely replace stainless steel annealing and pickling units. Solve environmental problems.
附图说明Description of drawings
图1示出了不锈钢卧式光亮退火设备的示意图。Fig. 1 shows a schematic diagram of a stainless steel horizontal bright annealing equipment.
具体实施方式Detailed ways
为进一步说明各实施例，本发明提供有附图。这些附图为本发明揭露内容的一部分，其主要用以说明实施例，并可配合说明书的相关描述来解释实施例的运作原理。配合参考这些内容，本领域普通技术人员应能理解其他可能的实施方式以及本发明的优点。图中的组件并未按比例绘制，而类似的组件符号通常用来表示类似的组件。To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.
现结合附图和具体实施方式对本发明进一步说明。The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.
如图1所示的，本发明提供了一种不锈钢卧式光亮退火设备，其适合带钢厚度0.15mm～3.0mm，宽度800～1600mm的不锈钢200/300/400系列等钢种的生产，产品表面为2B或者BA级别。该不锈钢卧式光亮退火设备包括沿工艺流程方向依序布设的开卷段、清洗段、工艺段、平整段和卷起段。As shown in Figure 1, the present invention provides a stainless steel horizontal bright annealing equipment, which is suitable for the production of steel grades such as stainless steel 200/300/400 series with a thickness of 0.15 mm to 3.0 mm and a width of 800 to 1600 mm. The surface is 2B or BA grade. The stainless steel horizontal bright annealing equipment includes an uncoiling section, a cleaning section, a process section, a smoothing section and a rolling section arranged in sequence along the process flow direction.
其中，开卷段包括第一开卷机1、第二开卷机2和焊机5，第一开卷机1、第二开卷机2并列设置，且第一开卷机1配置有一第一入口剪3，第二开卷机2配置有一第二入口剪4，原料钢卷经过第一开卷机1、第二开卷机2开卷，并在第一入口剪3和第二入口剪4处去掉不合格的带头和带尾，在焊机5实现焊接。Wherein, the uncoiling section includes a first uncoiler 1, a second uncoiler 2 and a welding machine 5, the first uncoiler 1 and the second uncoiler 2 are arranged side by side, and the first uncoiler 1 is equipped with a first inlet shear 3, the second The second uncoiler 2 is equipped with a second inlet shear 4. The raw steel coil is uncoiled through the first uncoiler 1 and the second uncoiler 2, and unqualified tape heads and strips are removed at the first inlet shear 3 and the second inlet shear 4. Tail, realize welding at welding machine 5.
焊接后的带钢经清洗段6进行清洗，清洗段由碱液喷洗、碱液刷洗、水刷洗和水漂洗组成。碱液喷洗最后一级喷管的喷嘴压力达到200公斤，碱液刷洗 和水刷洗设置2支及以上刷辊，刷毛直径为0.2mm～0.55mm，水漂洗采用3级或者4级漂洗，最后一级喷嘴压力达到200公斤；以使清洗后带钢表面清洁，且表面残油和残铁小于5mg/m 2。 The strip steel after welding is cleaned through the cleaning section 6, and the cleaning section is composed of lye spraying, lye scrubbing, water scrubbing and water rinsing. The nozzle pressure of the nozzle of the last stage of lye spraying reaches 200 kg. Two or more brush rollers are installed for lye scrubbing and water scrubbing. The diameter of the bristles is 0.2mm to 0.55mm. The pressure of the primary nozzle reaches 200 kg; to make the strip surface clean after cleaning, and the residual oil and residual iron on the surface are less than 5mg/m 2 .
清洗后的带钢经入***套8进入工艺段，入***套8前段和后段分别设置有入***套前张力辊7和入***套后张力辊9，以保证带钢进入工艺段的张紧度。工艺段由光亮炉入口密封装置10、光亮炉入口密封壳体11、光亮炉预热段12、光亮炉加热段13、光亮炉冷却段14、光亮炉出口密封壳体15和光亮炉出口密封装置16组成；光亮炉预热段12、光亮炉加热段13和光亮炉冷却段14之间设置圆盘辊，用于快速更换支撑辊，圆盘辊上的支撑辊采用耐高温的钢辊或陶瓷辊或纤维辊，圆盘辊与炉壳之间设置密封。The cleaned strip enters the process section through the entrance loop 8, and the front and rear sections of the entrance loop 8 are respectively provided with a tension roller 7 before the entrance loop and a tension roller 9 after the entrance loop to ensure the tension of the strip entering the process section. Tightness. The process section consists of bright furnace inlet sealing device 10, bright furnace inlet sealing shell 11, bright furnace preheating section 12, bright furnace heating section 13, bright furnace cooling section 14, bright furnace outlet sealing shell 15 and bright furnace outlet sealing device 16 components; disc rollers are set between the bright furnace preheating section 12, bright furnace heating section 13 and bright furnace cooling section 14 for quick replacement of support rollers. The support rollers on the disc rollers are made of high temperature resistant steel rollers or ceramics A seal is provided between the roller or the fiber roller, the disc roller and the furnace shell.
退火炉加热采用天然气加热或煤气加热或电加热，退火炉内设置马弗或者无马弗。退火炉保护气体为浓度75％～100％的氢气。退火炉入口和出口密封装置采用氮气密封，退火入口密封装置和出口密封装置采用立式夹送辊配合氮气保护的密封方式。The heating of the annealing furnace adopts natural gas heating, coal gas heating or electric heating, and muffles or no muffles are set in the annealing furnace. The protective gas of the annealing furnace is hydrogen with a concentration of 75% to 100%. The inlet and outlet sealing devices of the annealing furnace are sealed with nitrogen, and the annealing inlet and outlet sealing devices are sealed with vertical pinch rollers and nitrogen protection.
退火后的带钢经出***套18进入平整段，出***套18的前段和后段还分别设置有出***套前张力辊17和平整机前张力辊19，以保证带钢进入工艺段的张紧度。平整段设有双机架平整机20，进入平整段的带钢根据产品表面等级要求设置平整辊的粗糙度，并根据钢种决定使用单机架平整或是双机架平，如400系列不锈钢采用双机架平整以达到最优表面。平整机采用两辊或者四辊平整机，平整机可以是双机架也可以是单机架，如果设置双机架平整机，两个机架之间可以设置张力辊或无张力辊。The strip steel after annealing enters the leveling section through the exit looper 18, and the front section and the back section of the exit looper 18 are also respectively provided with a tension roller 17 before the exit looper and a tension roller 19 before the tempering machine to ensure that the strip steel enters the process section. Tension. The leveling section is equipped with a double-stand leveling machine 20, and the strip steel entering the leveling section sets the roughness of the leveling roller according to the product surface grade requirements, and decides to use a single-frame leveling or double-frame leveling according to the steel type, such as 400 series stainless steel Two-frame leveling is used to achieve an optimal surface. The tempering machine adopts two-roll or four-roll tempering machine, and the tempering machine can be a double frame or a single frame. If a double frame tempering machine is installed, tension rollers or no tension rollers can be set between the two frames .
平整后的带钢经出口剪22进行分切，进入卷取机23进行卷取，完成光亮退火工序。The flattened steel strip is cut by the outlet shears 22, and enters the coiler 23 for coiling to complete the bright annealing process.
本发明提供的不锈钢卧式光亮退火设备将清洗段、退火和平整等多个工序连接在一起组成连续机组，直接生产2B/BA表面不锈钢产品，省去工序间钢卷的调运，提高了成材率，很大程度上节约工厂建设用地和工程投资。同时本发明可以大大提高产能，至少20万吨/年，可以全面代替不锈钢退火酸洗机组，解决环保问题。The stainless steel horizontal bright annealing equipment provided by the invention connects multiple processes such as cleaning section, annealing and smoothing together to form a continuous unit, which directly produces 2B/BA surface stainless steel products, saves the transportation of steel coils between processes, and improves the yield , to a great extent save the factory construction land and engineering investment. At the same time, the invention can greatly increase the production capacity, at least 200,000 tons per year, can completely replace the stainless steel annealing and pickling unit, and solve the environmental protection problem.
尽管结合优选实施方案具体展示和介绍了本发明，但所属领域的技术人员应该明白，在不脱离所附权利要求书所限定的本发明的精神和范围内，在形式上和细节上可以对本发明做出各种变化，均为本发明的保护范围。Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Making various changes is within the protection scope of the present invention.

Claims (8)

  1. 一种不锈钢卧式光亮退火设备，其特征在于：包括沿工艺流程方向依序布设的开卷段、清洗段、工艺段、平整段和卷起段；A stainless steel horizontal bright annealing equipment, characterized in that it includes an uncoiling section, a cleaning section, a process section, a smoothing section and a rolling section arranged in sequence along the process flow direction;
    所述开卷段包括第一开卷机、第二开卷机和焊机，所述第一开卷机、第二开卷机在焊机前端并列设置，且第一开卷机配置有一第一入口剪，第二开卷机配置有一第二入口剪；The uncoiler section includes a first uncoiler, a second uncoiler and a welding machine. The first uncoiler and the second uncoiler are arranged side by side at the front end of the welder, and the first uncoiler is equipped with a first inlet shear and a second The uncoiler is equipped with a second entrance shear;
    所述清洗段包括依序设置的碱液喷洗装置、碱液刷洗组昂在、水刷洗装置和水漂洗装置；The cleaning section includes an lye spraying device, an lye scrubbing unit, a water scrubbing device and a water rinsing device arranged in sequence;
    所述工艺段前段设置有入***套，所述工艺段由光亮炉入口密封装置、光亮炉入口密封壳体、光亮炉预热段、光亮炉加热段、光亮炉冷却段、光亮炉出口密封壳体和光亮炉出口密封装置组成；The front section of the process section is provided with an inlet looper, and the process section is composed of a bright furnace inlet sealing device, a bright furnace inlet sealing shell, a bright furnace preheating section, a bright furnace heating section, a bright furnace cooling section, and a bright furnace outlet sealing shell Body and bright furnace outlet sealing device;
    所述平整段前段设置有出***套，所述平整段和卷起段分别设置有平整机和卷取机。The front section of the leveling section is provided with an outlet looper, and the leveling section and the roll-up section are respectively provided with a leveling machine and a coiler.
  2. 根据权利要求1所述的不锈钢卧式光亮退火设备，其特征在于：所述清洗段这碱液喷洗最后一级喷管的喷嘴压力不小于200公斤，所述碱液刷洗和水刷洗设置2支及以上刷辊，刷毛直径为0.2mm～0.55mm，所述水漂洗采用3级或者4级漂洗，最后一级喷嘴压力不小于200公斤。The stainless steel horizontal bright annealing equipment according to claim 1, characterized in that: the pressure of the nozzle of the last nozzle of the lye spray in the cleaning section is not less than 200 kg, and the lye scrubbing and water scrubbing are set to 2 For brush rollers with one or more brushes, the diameter of the bristles is 0.2 mm to 0.55 mm. The water rinsing adopts 3 or 4 levels of rinsing, and the nozzle pressure of the last level is not less than 200 kg.
  3. 根据权利要求1所述的不锈钢卧式光亮退火设备，其特征在于：所述光亮炉预热段、光亮炉加热段和光亮炉冷却段之间设置圆盘辊，且所述圆盘辊与炉壳之间密封设置。The stainless steel horizontal bright annealing equipment according to claim 1, characterized in that: a disc roller is arranged between the bright furnace preheating section, the bright furnace heating section and the bright furnace cooling section, and the disc roller is in contact with the furnace There is a sealing arrangement between the shells.
  4. 根据权利要求1所述的不锈钢卧式光亮退火设备，其特征在于：所述退火炉内具有浓度为75％～100％的氢气保护气体。The stainless steel horizontal bright annealing equipment according to claim 1, characterized in that: the annealing furnace has a hydrogen protective gas with a concentration of 75%-100%.
  5. 根据权利要求1所述的不锈钢卧式光亮退火设备，其特征在于：所述退火炉 入口和出口密封装置采用氮气密封。Stainless steel horizontal bright annealing equipment according to claim 1, is characterized in that: the inlet and outlet sealing devices of the annealing furnace adopt nitrogen sealing.
  6. 根据权利要求1所述的不锈钢卧式光亮退火设备，其特征在于：所述入***套前段和后段分别设置有入***套前张力辊和入***套后张力辊。The stainless steel horizontal bright annealing equipment according to claim 1, characterized in that: the front section and the rear section of the entrance looper are respectively provided with a front tension roller of the entrance looper and a rear tension roller of the entrance looper.
  7. 根据权利要求1所述的不锈钢卧式光亮退火设备，其特征在于：所述出***套的前段和后段还分别设置有出***套前张力辊和平整机前张力辊。The stainless steel horizontal bright annealing equipment according to claim 1, characterized in that: the front section and the rear section of the outlet looper are respectively provided with a tension roller before the outlet looper and a tension roller before the tempering machine.
  8. 根据权利要求1所述的不锈钢卧式光亮退火设备，其特征在于：所述平整机为双机架平整机，两个机架之间可以设置张力辊或无张力辊。The stainless steel horizontal bright annealing equipment according to claim 1, characterized in that: the tempering machine is a double-frame tempering machine, and a tension roller or a tension-free roller can be arranged between the two frames.
PCT/CN2021/125300 2021-09-07 2021-10-21 Horizontal bright annealing apparatus for stainless steel WO2023035368A1 (en)

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