CN110904327B - Galvanizing unit, zinc ash defect control method, device and system thereof and storage medium - Google Patents
Galvanizing unit, zinc ash defect control method, device and system thereof and storage medium Download PDFInfo
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- CN110904327B CN110904327B CN201911205310.6A CN201911205310A CN110904327B CN 110904327 B CN110904327 B CN 110904327B CN 201911205310 A CN201911205310 A CN 201911205310A CN 110904327 B CN110904327 B CN 110904327B
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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
- C21D11/00—Process control or regulation for heat treatments
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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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
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
- C21D1/76—Adjusting the composition of the atmosphere
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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
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
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- 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
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- 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
- C23C2/26—After-treatment
- C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
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- 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
- C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
- C23C2/36—Elongated material
- C23C2/40—Plates; Strips
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- Mechanical Engineering (AREA)
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Abstract
The embodiment of the invention discloses a galvanizing unit, a zinc ash defect control method, a zinc ash defect control device, a zinc ash defect control system and a storage medium, wherein the method comprises the following steps: acquiring the concentration of protective gas in the annealing furnace and the current temperature in the annealing furnace; if the concentration of the shielding gas is lower than the concentration threshold value, sending a valve opening instruction so that a stop valve arranged on a shielding gas inlet pipeline is opened after receiving the valve opening instruction; if the concentration of the protective gas is judged to be higher than the concentration threshold value, a valve closing instruction is sent out so that the stop valve can be closed after receiving the valve closing instruction; if the current temperature is lower than the temperature threshold value, a temperature-raising instruction is sent out, so that a temperature adjusting system can start a heating mode according to the temperature-raising instruction; and if the current temperature is higher than the temperature threshold value, sending a cooling instruction so that the temperature adjusting system closes the heating mode or opens the cooling mode according to the cooling and refrigerating. The reaction speed of the protective gas is faster, and the favorable guarantee is provided for improving the surface quality of the product.
Description
Technical Field
The embodiment of the invention relates to the technical field of annealing and coating of cold-rolled strips, in particular to a galvanizing unit, a zinc ash defect control method, a zinc ash defect control device, a zinc ash defect control system and a storage medium of the galvanizing unit.
Background
With the continuous expansion of the automobile market, the automobile quality requirement is more and more strict, so that the requirements of automobile production enterprises on the surface of the cold-rolled strip steel are also improved, and the surface quality and the cleanliness of the strip steel become important evaluation indexes. The zinc ash defect control of the surface defects of the hot-dip galvanized sheet strip steel becomes a bottleneck restricting the production of high-end automobile sheet products of iron and steel enterprises all over the world, and restricts the research and development of the high-end products of the iron and steel enterprises to a great extent.
In the production process, liquid zinc is very easy to volatilize in the nose of the annealing furnace to form zinc vapor, when the concentration of the zinc vapor in the furnace is higher than the saturation concentration of the zinc vapor, the zinc vapor is condensed, the saturation concentration of the zinc vapor is greatly influenced by the temperature, the saturation concentration of the zinc vapor is lower under the influence of the heat dissipation of the nose, and the temperature of the inner wall of the furnace is relatively lower, so the liquid zinc can become a main condensation part of the zinc vapor; the condensed part falls on the surface of the strip steel, so that the zinc ash defect on the surface of the strip steel is caused, and the surface quality is seriously reduced.
Disclosure of Invention
Therefore, the embodiment of the invention provides a galvanizing unit, a zinc ash defect control method, a zinc ash defect control device, a zinc ash defect control system and a storage medium thereof, so as to at least partially solve the technical problem of poor surface quality of strip steel caused by serious zinc ash defects.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a zinc ash defect control method, the method comprising:
acquiring the concentration of protective gas in the annealing furnace and the current temperature in the annealing furnace;
if the concentration of the shielding gas is lower than the concentration threshold value, sending a valve opening instruction so that a stop valve arranged on a shielding gas inlet pipeline is opened after receiving the valve opening instruction; if the concentration of the protective gas is judged to be higher than the concentration threshold value, a valve closing instruction is sent out so that the stop valve can be closed after receiving the valve closing instruction;
if the current temperature is lower than the temperature threshold value, a temperature-raising instruction is sent out, so that a temperature adjusting system can start a heating mode according to the temperature-raising instruction; and if the current temperature is higher than the temperature threshold value, sending a cooling instruction so that the temperature adjusting system closes the heating mode or opens the cooling mode according to the cooling and refrigerating.
Further, the method adopts humidified HNx with 3-3.5% of hydrogen mass fraction as protective gas.
The invention also provides a zinc ash defect control device, which comprises the following components based on the method:
the parameter acquisition unit is used for acquiring the concentration of the protective gas in the annealing furnace and the current temperature in the annealing furnace;
the protective gas concentration instruction output unit is used for sending a valve opening instruction when the protective gas concentration is judged to be lower than a concentration threshold value, so that a stop valve arranged on a protective gas inlet pipeline is opened after receiving the valve opening instruction; the protective gas concentration instruction output unit is also used for judging that the protective gas concentration is higher than a concentration threshold value, and then sending a valve closing instruction so that the stop valve can be closed after receiving the valve closing instruction;
the temperature instruction output unit is used for sending a temperature-rising instruction when the current temperature is judged to be lower than a temperature threshold value, so that the temperature regulation system can start a heating mode according to the temperature-rising instruction; the temperature instruction output unit is further used for sending a cooling instruction when the current temperature is judged to be higher than the temperature threshold value, so that the temperature adjusting system closes the heating mode or opens the cooling mode according to the cooling refrigeration.
Further, the protective gas is humidified HNx with the hydrogen mass fraction of 3-3.5%.
The invention also provides a galvanizing unit, comprising:
the temperature adjusting system comprises a heat conduction outer pipe, an inner pipe sleeved in the heat conduction outer pipe and an electric heating pipe penetrating through the inner pipe;
the gas pipeline bypass system comprises a protective gas inlet pipeline, a protective gas source communicated with the protective gas inlet pipeline and a stop valve arranged on the protective gas inlet pipeline;
and a zinc ash defect control apparatus as described above.
Further, the material of the heat conduction outer tube is Q235, heat preservation aluminum silicate wool is filled between the heat conduction outer tube and the inner tube, the material of the inner tube is SUS316L, the electric heating tube is an SUS316L seamless steel tube, magnesium oxide powder is filled in the electric heating tube, the material of a heating wire in the electric heating tube is Cr20Ni80, the heating power is 18KW, and the explosion-proof grade is Exd II CT 4.
Further, the stop valve is three groups, and the stop valve is the high temperature valve that the temperature resistance exceeds 350 ℃.
Further, the voltage of the exposed position of the zinc ash defect control device is 24 VDC.
The present invention also provides a zinc ash defect control system, comprising: a processor and a memory;
the memory is to store one or more program instructions;
the processor is configured to execute one or more program instructions to perform the method as described above.
The present invention also provides a computer storage medium having one or more program instructions embodied therein for use by a zinc ash defect control system to perform the method as described above.
The galvanizing unit and the zinc ash defect control method, device, system and storage medium thereof provided by the invention are combined with the original annealing furnace system, a certain amount of humidification HNx protective gas is injected into the surface of zinc liquid, the temperature of the protective gas in the furnace is adjusted through temperature adjustment, so that a layer of oxide film is formed on the zinc liquid surface in the nose of the annealing furnace, the reaction speed of the protective gas is faster through temperature adjustment, the efficiency is higher, the volatilization of zinc steam can be prevented, and the zinc ash is prevented from falling from the nose, thereby obviously reducing the zinc ash defect on the surface of the hot-dip galvanized strip steel, and providing favorable guarantee for improving the surface quality of products.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.
FIG. 1 is a flow chart of one embodiment of a zinc ash defect control method provided by the present invention;
FIG. 2 is a block diagram of a zinc ash defect control device according to an embodiment of the present invention;
FIG. 3 is a block diagram of an embodiment of a system for controlling zinc ash defects according to the present invention.
Description of reference numerals:
101-parameter acquisition unit 102-protective gas concentration instruction output unit
103-temperature instruction output unit 201-processor 202-memory
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In one embodiment, the present invention provides a zinc ash defect control method, as shown in fig. 1, comprising:
s1: acquiring the concentration of protective gas in the annealing furnace and the current temperature in the annealing furnace; the method adopts humidified HNx with 3-3.5% of hydrogen mass fraction as protective gas.
S2: if the concentration of the shielding gas is lower than the concentration threshold value, sending a valve opening instruction so that a stop valve arranged on a shielding gas inlet pipeline is opened after receiving the valve opening instruction; if the concentration of the protective gas is judged to be higher than the concentration threshold value, a valve closing instruction is sent out so that the stop valve can be closed after receiving the valve closing instruction;
s3: if the current temperature is lower than the temperature threshold value, a temperature-raising instruction is sent out, so that a temperature adjusting system can start a heating mode according to the temperature-raising instruction; and if the current temperature is higher than the temperature threshold value, sending a cooling instruction so that the temperature adjusting system closes the heating mode or opens the cooling mode according to the cooling and refrigerating.
The volatilization of the zinc liquid is effectively controlled in the production process, and the defect caused by the scattering of the produced zinc ash on the surface of the strip steel is prevented, so that the method is the most important of the many offensive work of hot galvanizing units in each cold rolling mill. By analyzing the occurrence rule and the distribution state of the expression form of the zinc ash defects, the zinc ash production amount can be reduced by inhibiting the volatilization of zinc steam, the probability of the zinc ash adhering to the furnace nose wall is reduced, the frequency of dropping the zinc ash onto the surface of the strip steel from the furnace nose wall is reduced, the root cause of the zinc ash defects is timely and accurately reduced, and the stability of the surface quality of the strip steel is maintained.
The characteristics of zinc ash defects on the surface of hot-dip galvanized steel strip require related work research from a zinc ash generation source. The liquid zinc is very easy to volatilize in the nose of the annealing furnace to form zinc vapor, when the concentration of the zinc vapor in the furnace is higher than the saturation concentration of the zinc vapor, the zinc vapor is condensed, the saturation concentration of the zinc vapor is greatly influenced by the temperature, the lower the temperature is, the lower the saturation concentration of the zinc vapor is, the influence of the heat dissipation of the nose is caused, the temperature of the inner wall of the furnace is relatively lower, and therefore the zinc vapor can be a main condensation part of the zinc vapor. The condensed part falls on the surface of the strip steel, so that the zinc ash defect on the surface of the strip steel is caused, and the surface quality is seriously reduced.
From the analysis of factors influencing the volatilization of zinc vapor, the volatilization of the zinc liquid can not be reduced by reducing the temperature of the zinc liquid and the exposed area of the zinc liquid surface. The exposed area of the zinc liquid surface in the furnace nose can only be reduced by covering the surface of the zinc liquid in the furnace nose with a layer of protective material. A certain amount of humidifying nitrogen is injected into the surface of the zinc liquid, so that an oxide film is formed on the zinc liquid surface in the furnace nose, and further volatilization of zinc vapor can be prevented.
The method provided by the invention can timely and accurately detect and control the humidity inside the furnace nose, generate a zinc layer oxide film to reduce the zinc ash amount, reduce the strip steel coating effect after annealing and reduce the loss of high-quality hot galvanizing products. Based on the reduction of the zinc ash defect of the strip steel annealing hot galvanizing product, the amount of zinc ash generated in the furnace nose is effectively controlled through the furnace nose humidifying and shielding gas heating system with reasonable design, and the surface quality of the hot galvanizing high-end product is improved.
In the above specific embodiment, the zinc ash defect control method provided by the present invention is combined with the original annealing furnace system, and a certain amount of humidified HNx shielding gas is injected onto the surface of the zinc bath, and the temperature of the shielding gas in the furnace is adjusted by temperature adjustment, so that a layer of oxide film is formed on the zinc bath surface in the nose of the annealing furnace, and the reaction speed of the shielding gas is faster and the efficiency is higher by temperature adjustment, so that volatilization of zinc vapor can be prevented, and zinc ash is prevented from falling from the nose, thereby significantly reducing the zinc ash defect on the surface of the hot-dip galvanized strip steel, and providing a favorable guarantee for improving the surface quality of the product.
In addition to the above method, the present invention provides a zinc ash defect controlling apparatus, in one embodiment, as shown in fig. 2, the apparatus comprising:
the device comprises a parameter acquisition unit 101, wherein the parameter acquisition unit 101 is used for acquiring the concentration of the protective gas in the annealing furnace and the current temperature in the annealing furnace; wherein the protective gas is humidified HNx with hydrogen mass fraction of 3-3.5%
The protective gas concentration instruction output unit 102 is used for judging that the protective gas concentration is lower than a concentration threshold value, and then sending a valve opening instruction so that a stop valve arranged on a protective gas inlet pipeline can be opened after receiving the valve opening instruction; the protective gas concentration instruction output unit is also used for judging that the protective gas concentration is higher than a concentration threshold value, and then sending a valve closing instruction so that the stop valve can be closed after receiving the valve closing instruction;
the temperature instruction output unit 103 is used for judging that the current temperature is lower than a temperature threshold value, and then sending a temperature-raising instruction so that the temperature regulation system can start a heating mode according to the temperature-raising instruction; the temperature instruction output unit is further used for sending a cooling instruction when the current temperature is judged to be higher than the temperature threshold value, so that the temperature adjusting system closes the heating mode or opens the cooling mode according to the cooling refrigeration.
In the above specific embodiment, the zinc ash defect control device provided by the invention is combined with the original annealing furnace system, a certain amount of humidified HNx shielding gas is injected into the surface of the zinc liquid, and the temperature of the shielding gas in the furnace is adjusted through temperature adjustment, so that an oxide film is formed on the zinc liquid surface in the nose of the annealing furnace, and the reaction speed of the shielding gas is faster and the efficiency is higher through temperature adjustment, so that volatilization of zinc vapor can be prevented, zinc ash is prevented from falling from the nose, the zinc ash defect on the surface of the hot-dip galvanized strip steel is remarkably reduced, and favorable guarantee is provided for improving the surface quality of a product.
In addition, the invention also provides a galvanizing unit which comprises a temperature adjusting system, a gas pipeline bypass system and the zinc ash defect control device, wherein the temperature adjusting system comprises a heat conduction outer pipe, an inner pipe sleeved in the heat conduction outer pipe and an electric heating pipe penetrating through the inner pipe, the gas pipeline bypass system comprises a protective gas inlet pipeline, a protective gas source communicated with the protective gas inlet pipeline and a stop valve arranged on the protective gas inlet pipeline.
Specifically, the heat conduction outer tube is made of Q235, heat preservation aluminum silicate wool is filled between the heat conduction outer tube and the inner tube, the inner tube is made of SUS316L, the electric heating tube is an SUS316L seamless steel tube, magnesium oxide powder is filled in the electric heating tube, a heating wire in the electric heating tube is made of Cr20Ni80, the heating power is 18KW, and the explosion-proof grade is Exd II CT 4. The three groups of stop valves are high-temperature valves capable of resisting temperature of more than 350 ℃, and the voltage of the exposed position of the zinc ash defect control device is 24 VDC.
In the above specific embodiment, the galvanizing unit provided by the invention is combined with the original annealing furnace system, a certain amount of humidified HNx shielding gas is injected on the surface of the zinc liquid, and the temperature of the shielding gas in the furnace is adjusted through temperature adjustment, so that an oxide film is formed on the zinc liquid surface in the nose of the annealing furnace, the reaction speed of the shielding gas is faster through temperature adjustment, the efficiency is higher, the volatilization of zinc vapor can be prevented, and zinc ash is prevented from falling from the nose, so that the zinc ash defect on the surface of the hot-dip galvanized strip steel is remarkably reduced, and the surface quality of the product is favorably ensured.
According to a fourth aspect of the embodiments of the present invention, there is also provided a zinc ash defect control system, as shown in fig. 3, the system comprising: a processor 201 and a memory 202;
the memory 202 is used to store one or more program instructions;
the processor 201 is configured to execute one or more program instructions to perform the method described above.
In correspondence with the above embodiments, embodiments of the present invention also provide a computer storage medium containing one or more program instructions therein. Wherein the one or more program instructions are for a method as described above by a zinc ash defect control system.
In an embodiment of the invention, the processor may be an integrated circuit chip having signal processing capability. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The processor reads the information in the storage medium and completes the steps of the method in combination with the hardware.
The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or which may include both volatile and nonvolatile memory.
The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.
The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), SLDRAM (SLDRAM), and Direct Rambus RAM (DRRAM).
The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.
Those skilled in the art will appreciate that the functionality described in the present invention may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above embodiments are only for illustrating the embodiments of the present invention and are not to be construed as limiting the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the embodiments of the present invention shall be included in the scope of the present invention.
Claims (8)
1. A zinc ash defect control method, comprising:
acquiring the concentration of protective gas in an annealing furnace and the current temperature in the annealing furnace, wherein the protective gas is humidified HNx with 3-3.5% of hydrogen by mass;
if the concentration of the shielding gas is lower than the concentration threshold value, sending a valve opening instruction so that a stop valve arranged on a shielding gas inlet pipeline is opened after receiving the valve opening instruction; if the concentration of the protective gas is judged to be higher than the concentration threshold value, a valve closing instruction is sent out so that the stop valve can be closed after receiving the valve closing instruction;
if the current temperature is lower than the temperature threshold value, a temperature-raising instruction is sent out, so that a temperature adjusting system can start a heating mode according to the temperature-raising instruction; if the current temperature is higher than the temperature threshold value, sending a cooling instruction so that the temperature adjusting system closes a heating mode or opens a cooling mode according to cooling and refrigeration;
the zinc ash defect control method is combined with an original annealing furnace system, a certain amount of humidification HNx protective gas is injected into the surface of zinc liquid, the temperature of the protective gas in the furnace is adjusted through temperature adjustment, so that an oxide film is formed on the zinc liquid surface in the furnace nose of the annealing furnace, the reaction speed of the protective gas is higher through temperature adjustment, the efficiency is higher, the volatilization of zinc steam can be prevented, and the zinc ash is prevented from falling from the furnace nose.
2. A zinc ash defect control apparatus based on the method of claim 1, wherein the apparatus comprises:
the parameter acquisition unit is used for acquiring the concentration of the protective gas in the annealing furnace and the current temperature in the annealing furnace;
the protective gas concentration instruction output unit is used for sending a valve opening instruction when the protective gas concentration is judged to be lower than a concentration threshold value, so that a stop valve arranged on a protective gas inlet pipeline is opened after receiving the valve opening instruction; the protective gas concentration instruction output unit is also used for judging that the protective gas concentration is higher than a concentration threshold value, and then sending a valve closing instruction so that the stop valve can be closed after receiving the valve closing instruction;
the temperature instruction output unit is used for sending a temperature-rising instruction when the current temperature is judged to be lower than a temperature threshold value, so that the temperature regulation system can start a heating mode according to the temperature-rising instruction; the temperature instruction output unit is further used for sending a cooling instruction when the current temperature is judged to be higher than the temperature threshold value, so that the temperature adjusting system closes the heating mode or opens the cooling mode according to the cooling refrigeration.
3. A galvanizing unit is characterized by comprising:
the temperature adjusting system comprises a heat conduction outer pipe, an inner pipe sleeved in the heat conduction outer pipe and an electric heating pipe penetrating through the inner pipe;
the gas pipeline bypass system comprises a protective gas inlet pipeline, a protective gas source communicated with the protective gas inlet pipeline and a stop valve arranged on the protective gas inlet pipeline;
and the zinc ash defect controlling device of claim 2.
4. The galvanizing unit according to claim 3, wherein the heat-conducting outer tube is made of Q235, heat-insulating aluminum silicate wool is filled between the heat-conducting outer tube and the inner tube, the inner tube is made of SUS316L, the electric heating tube is an SUS316L seamless steel tube, magnesium oxide powder is filled in the electric heating tube, a heating wire in the electric heating tube is made of Cr20Ni80, the heating power is 18KW, and the explosion-proof grade is Exd II CT 4.
5. The galvanizing unit according to claim 3, wherein the three groups of stop valves are provided, and the stop valves are high temperature valves capable of resisting temperature exceeding 350 ℃.
6. The galvanizing line set forth in claim 3, wherein the exposed position voltage of the zinc ash defect control device is 24 VDC.
7. A zinc ash defect control system, comprising: a processor and a memory;
the memory is to store one or more program instructions;
the processor, configured to execute one or more program instructions to perform the method of claim 1.
8. A computer storage medium comprising one or more program instructions for execution by a zinc ash defect control system of the method of claim 1.
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| CN201911205310.6A CN110904327B (en) | 2019-11-29 | 2019-11-29 | Galvanizing unit, zinc ash defect control method, device and system thereof and storage medium |
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| CN110904327B true CN110904327B (en) | 2021-07-23 |
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