CN115219686A - Method for acquiring defect data of cold-rolled plate in continuous annealing process - Google Patents
Method for acquiring defect data of cold-rolled plate in continuous annealing process Download PDFInfo
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- CN115219686A CN115219686A CN202210861589.9A CN202210861589A CN115219686A CN 115219686 A CN115219686 A CN 115219686A CN 202210861589 A CN202210861589 A CN 202210861589A CN 115219686 A CN115219686 A CN 115219686A
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- 238000000034 method Methods 0.000 title claims abstract description 191
- 230000008569 process Effects 0.000 title claims abstract description 162
- 230000007547 defect Effects 0.000 title claims abstract description 143
- 238000000137 annealing Methods 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 claims abstract description 48
- 238000004088 simulation Methods 0.000 claims abstract description 35
- 238000012360 testing method Methods 0.000 claims abstract description 32
- 238000012544 monitoring process Methods 0.000 claims abstract description 8
- 238000007431 microscopic evaluation Methods 0.000 claims abstract description 4
- 238000010438 heat treatment Methods 0.000 claims description 34
- 238000001816 cooling Methods 0.000 claims description 33
- 238000005275 alloying Methods 0.000 claims description 21
- 238000010583 slow cooling Methods 0.000 claims description 8
- 238000002791 soaking Methods 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 claims description 3
- 238000012876 topography Methods 0.000 claims description 3
- 239000000956 alloy Substances 0.000 description 5
- 229910045601 alloy Inorganic materials 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000004807 localization Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004452 microanalysis Methods 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/20—Metals
- G01N33/204—Structure thereof, e.g. crystal structure
- G01N33/2045—Defects
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- 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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Abstract
The application discloses a method for acquiring defect data of a cold-rolled plate in a continuous annealing process. The method comprises the following steps: preparing a cold-rolled sample plate, wherein one surface of the cold-rolled sample plate is used as a defect manufacturing surface, the other surface of the cold-rolled sample plate is used as a temperature monitoring surface, and a thermocouple is welded on the temperature monitoring surface so as to monitor the real-time temperature value of the cold-rolled sample plate in the continuous annealing process; and simulating the continuous annealing process for the cold-rolled pattern sheet through a simulation test device based on the process condition parameters of each process section, wherein the defects are manufactured on the defect manufacturing surface of the cold-rolled pattern sheet in the target process section. And carrying out microscopic analysis on the defects of the defect manufacturing surface to obtain the microscopic characteristic data of the defects of the cold-rolled sample plate in the target process section. By obtaining the microscopic characteristic data of the defects generated by the continuous annealing process, the problem that the defects of the metallurgical plates are difficult to distinguish in the continuous annealing process link can be solved.
Description
Technical Field
The application belongs to the technical field of metallurgical plate production, and particularly relates to a method for acquiring defect data of a cold-rolled plate in a continuous annealing process.
Background
In the technical field of metallurgical plate production, the cause of the defect of the metallurgical plate can be confirmed by observing the microscopic representation of the defect of the metallurgical plate. However, the conventional method can only distinguish the defects according to the difference of slag inclusion, inclusion or iron oxide and other components, and in the continuous annealing process, the defects are difficult to distinguish only by observing the microscopic representation of the defects of the metallurgical plates. How to accurately and quickly distinguish and locate the defects in the continuous annealing process link is an urgent problem to be solved.
Disclosure of Invention
The embodiment of the application provides a method for acquiring defect data of a cold-rolled plate in a continuous annealing process, further defect micro characteristic data generated by the continuous annealing process can be acquired, defects generated in each process section in the continuous annealing process are compared with the defect micro characteristic data, and the problem that defects of a metallurgical plate in a continuous annealing process link are difficult to distinguish and position can be solved.
Other features and advantages of the present application will be apparent from the following detailed description, or may be learned by practice of the application.
According to a first aspect of embodiments of the present application, there is provided a method for obtaining defect data of a cold-rolled plate in a continuous annealing process, wherein the continuous annealing process comprises a plurality of process segments, the method comprising: preparing a cold-rolled sample plate, wherein one surface of the cold-rolled sample plate is used as a defect manufacturing surface, the other surface of the cold-rolled sample plate is used as a temperature monitoring surface, and a thermocouple is welded on the temperature monitoring surface so as to monitor the real-time temperature value of the cold-rolled sample plate in the continuous annealing process; simulating a continuous annealing process for the cold-rolled sample sheet by a simulation test device based on the process condition parameters of each process section, wherein the defect is manufactured on the defect manufacturing surface of the cold-rolled sample sheet in the target process section; and carrying out microscopic analysis on the defects of the defect manufacturing surface to obtain the microscopic characteristic data of the defects of the cold-rolled sample plate in the target process section.
In some embodiments of the present application, based on the foregoing scheme, the simulating a continuous annealing process for the cold-rolled sheet pattern by a simulation test apparatus based on the process conditions of the respective process sections includes: placing the cold-rolled sample sheet in the simulation test device; sequentially simulating the process environment of the pattern cold-rolled sheet in each process section through a simulation test device according to the sequence of each process section in the continuous annealing process, wherein the process environment of each process section is correspondingly determined by the process condition parameters of each process section, and the real-time temperature value of the pattern cold-rolled sheet in the continuous annealing process monitored by the thermocouple is used for feeding back the process environment of the pattern cold-rolled sheet in each process section.
In some embodiments of the present application, based on the foregoing scheme, the process sections include a preheating section, a heating section, a soaking section, a rapid cooling section, and a slow cooling section.
In some embodiments of the present application, based on the foregoing solution, the simulation test apparatus includes a heating chamber, a cooling chamber, and an alloying chamber, wherein the heating chamber is used for simulating the process environment of the cold-rolled pattern sheet in the preheating section, the heating section, and the soaking section; the cooling bin is used for simulating the process environment of the cold-rolled sample plate in the quick cooling section and the slow cooling section; the alloying bin is used for manufacturing defects on the defect manufacturing surface of the cold-rolled sheet in a target process section.
In some embodiments of the present application, based on the foregoing, the producing defects on the defect producing side of the pattern cold-rolled sheet in the target process section comprises: and when the pattern cold-rolled sheet meets the defect manufacturing condition in the target process section, moving the pattern cold-rolled sheet from the heating bin or the cooling bin into the alloying bin, and manufacturing defects on the defect manufacturing surface of the pattern cold-rolled sheet by a defect manufacturing device in the alloying bin.
In some embodiments of the present application, based on the aforementioned solution, the defect manufacturing apparatus comprises a ceramic rod hingedly fixed to a cooling tube of the alloying chamber.
In some embodiments of the present application, based on the foregoing, the simulation test device further comprises a style clip and a style clip rod, the style clip being attached to one end of the style clip rod, the method further comprising: through style clamp centre gripping the style cold-rolled sheet, through the flexible control of control style clamping bar the style cold-rolled sheet is in heating storehouse, cooling storehouse, and move between the alloying storehouse.
In some embodiments of the present application, based on the foregoing solution, the method further comprises: in the process of controlling the pattern cold-rolled sheet to move among the heating bin, the cooling bin and the alloying bin, the distance change value between the pattern cold-rolled sheet and the inner wall of the simulation test device is controlled to be less than 2mm.
In some embodiments of the present application, the defect micro-feature data includes micro-topography and defect grain features based on the foregoing scheme.
In some embodiments of the present application, based on the foregoing solution, the method further comprises: acquiring microscopic defect characteristic data of the cold-rolled sample plate generated in each process section as reference data; acquiring micro characteristic data of defects of a cold-rolled sheet in the actual production process in the continuous annealing process stage as data to be verified; and positioning the process section of the cold-rolled sheet with the defects in the actual production process in the continuous annealing process stage based on the data to be verified and the reference data.
In the application, through in the continuous annealing process, make the defect on the defect preparation face of style cold-rolled sheet, the defect simulation each process section's in the continuous annealing process defect, and right the defect carries out micro analysis, in order to obtain the style cold-rolled sheet is at each process section's defect micro characteristic data. In actual production, defects of each process section in actual production can be compared with the defect micro characteristic data according to the obtained defect micro characteristic data, and the process sections with the defects are positioned, so that the problem that the defects of the metallurgical plates in the continuous annealing process link are difficult to distinguish and position can be solved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural diagram of a simulation test apparatus in an embodiment of the present application;
FIG. 2 is a flow chart illustrating a method of obtaining defect data for a cold rolled sheet in a continuous annealing process in an embodiment of the present application;
FIG. 3 is a flow chart showing a simulation of a continuous annealing process for the cold-rolled sheet of the present invention by a simulation test apparatus in an embodiment of the present application;
FIG. 4 shows a flow chart of defect localization in an embodiment of the present application;
fig. 5 shows a structural schematic of a defective grain feature in an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the subject matter of the present application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, and so forth. In other instances, well-known methods, devices, implementations, or operations have not been shown or described in detail to avoid obscuring aspects of the application.
The block diagrams shown in the figures are functional entities only and do not necessarily correspond to physically separate entities. I.e. these functional entities may be implemented in the form of software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor means and/or microcontroller means.
The flow charts shown in the drawings are merely illustrative and do not necessarily include all of the contents and operations/steps, nor do they necessarily have to be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the actual execution sequence may be changed according to the actual situation.
In the present application, in order to make those skilled in the art better understand the present application, before the detailed description of the defect data obtaining scheme of the cold rolled plate in the continuous annealing process proposed in the present application, first, referring to fig. 1, a simulation test apparatus for implementing the defect data obtaining scheme of the cold rolled plate in the continuous annealing process is briefly described.
Referring to fig. 1, a schematic structural diagram of a simulation test apparatus in the embodiment of the present application is shown.
As shown in FIG. 1, a simulation test apparatus 100 includes a jig 101, a cooling chamber 103, a heating chamber 104, and an alloy chamber 105. A style clip 102 is arranged in the cooling bin 103. The style clip 102 is connected to the style clip bar 101. The alloy bin 105 is internally provided with a defect manufacturing device 106, a cooling pipe 107 and a heating electrode 108.
The cooling bin 103 is used for simulating the process environment of the cold-rolled sample plate in the quick cooling section and the slow cooling section.
The heating chamber 104 is used to simulate the process environment of the cold-rolled sheet in the preheating section, the heating section, and the soaking section.
The alloying bin 105 is used to make defects in the defect making face of the cold rolled sheet of the style at the target process stage.
The implementation details of the technical solution of the embodiment of the present application are set forth in detail below:
fig. 2 shows a flowchart of a method for obtaining defect data of a cold-rolled plate in a continuous annealing process in an embodiment of the present application, where the continuous annealing process includes a plurality of process segments, and referring to fig. 2, the flowchart of the method specifically includes steps 210 to 250, which are described in detail as follows:
And 230, simulating a continuous annealing process aiming at the pattern cold-rolled sheet through a simulation test device based on the process condition parameters of each process section, wherein the defect is manufactured on the defect manufacturing surface of the pattern cold-rolled sheet in the target process section.
And 250, carrying out microscopic analysis on the defects of the defect manufacturing surface to obtain microscopic characteristic data of the defects of the cold-rolled sample plate in the target process section.
Specifically, one side of the cold-rolled sheet of the pattern is used as a defect producing side to produce a defect by the in-line annealing process. And meanwhile, the thermocouple is arranged on the other side of the cold-rolled sample plate, and the real-time temperature value of the cold-rolled sample plate in the continuous annealing process can be monitored in time through the thermocouple.
Then, based on the process condition parameters of each process stage of the continuous annealing process, including temperature value, heating time, cooling time, holding time, alloying time, and temperature changing (including heating and cooling) speed, the continuous annealing process for the cold-rolled sheet pattern is simulated by the simulation test device, and defects are manufactured on the defect manufacturing surface of the cold-rolled sheet pattern.
After the defects are manufactured on the defect manufacturing surface of the cold-rolled sample plate, the defects on the defect manufacturing surface of the cold-rolled sample plate are subjected to micro-processing and analysis, and the micro-feature data of the defects of the cold-rolled sample plate are obtained.
In an embodiment of the present application, the defect micro-feature data further includes micro-topography and defect grain features.
In the following description, specific examples are given for clarity of understanding to those skilled in the art.
For example, when the rolled hard plate DC01 is used as a sample cold rolled plate, the rolled hard plate DC01 is moved to a heating chamber, heated to 300 ℃ at a speed of 4 ℃/S, moved to an alloy chamber, alloyed at 300 ℃ and kept warm for 2 seconds, the rolled hard plate DC01 is moved to the heating chamber, heated to 800 ℃ at a speed of 4 ℃/S and kept warm for 20 seconds, moved to a cooling chamber, cooled to 460 ℃ at a speed of 20 ℃/S, cooled to 150 ℃ at a speed of 30 ℃/S, and air-cooled to room temperature to form defects when the rolled hard plate DC01 is in a heating section in a continuous annealing process.
For another example, when the rolled hard sheet DC01 is used as a sample cold rolled sheet, the rolled hard sheet DC01 is moved to a heating chamber, heated to 800 ℃ at a speed of 4 ℃/S and kept warm for 20 seconds while the rolled hard sheet DC01 is in a rapid cooling stage in a continuous annealing process, the rolled hard sheet DC01 is moved to a cooling chamber, cooled to 500 ℃ at a speed of 20 ℃/S, the rolled hard sheet DC01 is moved to an alloy chamber, alloyed at 500 ℃ and kept warm for 2 seconds, the rolled hard sheet DC01 is moved to a cooling chamber, cooled to 460 ℃ at a speed of 20 ℃/S, the rolled hard sheet DC01 is cooled to 150 ℃ at a speed of 30 ℃/S, and the rolled hard sheet DC01 is air-cooled to room temperature, thereby forming defects.
In this application, through the simulation test device, can be in the defect of style cold-rolled sheet makes the face simulation the defect of target process section to carry out micro-processing and analysis to the defect of target process section, can obtain the micro characteristic data of the defect of target process section. According to the microscopic characteristic data, the defects of each process section on the cold-rolled pattern plate can be known, and the problem that the defects in the continuous annealing process link are difficult to distinguish and position is solved.
In order to better understand the present application for those skilled in the art, the following will be further described with reference to fig. 1 and 2.
In an embodiment of the present application, further, when the cold-rolled pattern sheet satisfies the defect manufacturing condition in the target process stage, the cold-rolled pattern sheet is moved from the heating silo or the cooling silo into the alloying silo, and the defect manufacturing surface of the cold-rolled pattern sheet is defected by the defect manufacturing device in the alloying silo to manufacture the defect on the defect manufacturing surface of the cold-rolled pattern sheet in the target process stage.
In an embodiment of the present application, further, the defect manufacturing apparatus includes a ceramic rod hingedly fixed to a cooling pipe of the alloying chamber.
In the embodiment of the present application, further, the cold-rolled pattern sheet is held by the pattern clamp, and the cold-rolled pattern sheet is moved among the heating chamber, the cooling chamber, and the alloying chamber by controlling the expansion and contraction of the pattern clamp rod.
In the embodiment of the application, further, in the process of controlling the pattern cold-rolled sheet to move among the heating chamber, the cooling chamber and the alloying chamber, the distance change value between the pattern cold-rolled sheet and the inner wall of the simulation test device is controlled to be less than 2mm, so that the pattern cold-rolled sheet is prevented from contacting with the heating electrode.
In this application, through the analogue test device for the style cold-rolled sheet is in move between heating bin, cooling bin and the alloy storehouse, in order to realize to make the defect on the defect manufacturing face of style cold-rolled sheet. And obtaining the microscopic characteristic data of the defects of the target process section through the defects, so that the problem that the defects in the continuous annealing process link are difficult to distinguish and position is solved according to the microscopic characteristic data.
Fig. 3 shows a flow chart of a continuous annealing process for the cold-rolled sheet of the present application by a simulation test device in an embodiment, and referring to fig. 3, the flow chart specifically includes steps 310 to 330, which are described in detail as follows:
And 330, sequentially simulating the process environment of the pattern cold-rolled sheet in each process section through a simulation test device according to the sequence of each process section in the continuous annealing process, wherein the process environment of each process section is correspondingly determined by the process condition parameters of each process section, and the real-time temperature value of the pattern cold-rolled sheet in the continuous annealing process monitored by the thermocouple is used for feeding back the process environment of the pattern cold-rolled sheet in each process section.
Specifically, the pattern cold-rolled sheet is placed in the simulation test device, and the process environment of the pattern cold-rolled sheet in each process section is simulated sequentially through the simulation test device according to the sequence of each process section in the continuous annealing process, so that the defects of the corresponding process section are manufactured on the defect manufacturing surface of the pattern cold-rolled sheet.
The real-time temperature value of the cold-rolled pattern sheet in the continuous annealing process monitored by the thermocouple is used for feeding back the process environment of the cold-rolled pattern sheet in each process section so as to ensure the simulation accuracy of the simulation test device.
In the embodiment of the present application, further, each process section includes a preheating section, a heating section, a soaking section, a rapid cooling section, and a slow cooling section.
In the present application, it is possible to simulate the defects of the process sections on the defect manufacturing surface of the cold-rolled sheet pattern by the process section through the simulation test apparatus and the process condition parameters of the respective process sections.
Fig. 4 shows a flowchart of defect localization in the embodiment of the present application, and referring to fig. 4, the flowchart of the method specifically includes steps 410 to 450, which are described in detail as follows:
and step 410, acquiring the micro-feature data of the defects generated by the cold-rolled sample plate in each process section as reference data.
And 430, acquiring the micro characteristic data of the defects of the cold-rolled sheet in the actual production process in the continuous annealing process stage as data to be verified.
And 450, positioning a process section with defects in the actual production process of the cold-rolled sheet in the continuous annealing process stage based on the data to be verified and the reference data.
Specifically, the microscopic defect characteristic data generated in each process section according to the cold-rolled plate is used as reference data. And acquiring the micro characteristic data of the defects generated by the cold-rolled sample plate in each process section as data to be verified. By comparing the reference data with the data to be verified, the process section with the defects can be accurately and quickly positioned.
In order to provide those skilled in the art with a better understanding of the present application, reference will now be made to specific defective grain characterization maps.
Fig. 5 shows a structural schematic of a defective grain feature in an embodiment of the present application. Referring to fig. 5, the defective grain characteristics of the cold-rolled sheet of the described design in the heating section and the slow cooling section, respectively, are described.
Specifically, after a defect is produced on a defect producing surface of the cold-rolled pattern sheet, the cold-rolled pattern sheet is subjected to sample inlaying polishing, and the cold-rolled pattern sheet is subjected to corrosion treatment by using 3% nitric acid, so that the defect grain characteristics of the heating section and the cold section are obtained.
In the application, the heating section and the cooling section defect grain characteristics are obtained by carrying out sample inlaying polishing and corrosion treatment on the defects. And acquiring defect microscopic characteristic data of the defect grain characteristics of the heating section and the slow cooling section according to the defect grain characteristics of the heating section and the slow cooling section. Therefore, the defects generated by each process section can be compared with the obtained defect micro characteristic data according to the defect micro characteristic data, and the process section with the defects can be accurately and quickly determined.
The above description is only an example of the present application and is not intended to limit the present application, and various modifications and changes may be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims (10)
1. A method of obtaining cold rolled sheet defect data in a continuous annealing process, the continuous annealing process comprising a plurality of process sections, the method comprising:
preparing a cold-rolled sample plate, wherein one surface of the cold-rolled sample plate is used as a defect manufacturing surface, the other surface of the cold-rolled sample plate is used as a temperature monitoring surface, and a thermocouple is welded on the temperature monitoring surface so as to monitor the real-time temperature value of the cold-rolled sample plate in the continuous annealing process;
simulating a continuous annealing process for the cold-rolled pattern sheet through a simulation test device based on the process condition parameters of each process section, wherein defects are manufactured on the defect manufacturing surface of the cold-rolled pattern sheet in the target process section;
and carrying out microscopic analysis on the defects of the defect manufacturing surface to obtain the microscopic characteristic data of the defects of the cold-rolled sample plate in the target process section.
2. The method of claim 1, wherein said simulating a continuous retropass process for said cold rolled sheet pattern by a simulation test rig based on process conditions of each process section comprises:
placing the cold-rolled sample sheet in the simulation test device;
sequentially simulating the process environment of the pattern cold-rolled sheet in each process section through a simulation test device according to the sequence of each process section in the continuous annealing process, wherein the process environment of each process section is correspondingly determined by the process condition parameters of each process section, and the real-time temperature value of the pattern cold-rolled sheet in the continuous annealing process monitored by the thermocouple is used for feeding back the process environment of the pattern cold-rolled sheet in each process section.
3. The method of claim 2, wherein each process section comprises a preheat section, a heat section, a soak section, a fast cool section, and a slow cool section.
4. The method of claim 3, wherein said simulation test apparatus comprises a heating chamber, a cooling chamber, an alloying chamber, wherein said heating chamber is used to simulate the process environment of said cold-rolled pattern sheet in said preheating section, said heating section, said soaking section; the cooling bin is used for simulating the process environment of the cold-rolled sample plate in the quick cooling section and the slow cooling section; the alloying bin is used for manufacturing defects on the defect manufacturing surface of the cold-rolled sheet in a target process section.
5. The method of claim 4, wherein producing defects in a defect producing face of said pattern cold rolled sheet in a target process section comprises:
and when the pattern cold-rolled sheet meets defect manufacturing conditions in a target process section, moving the pattern cold-rolled sheet from the heating bin or the cooling bin into the alloying bin, and manufacturing defects on a defect manufacturing surface of the pattern cold-rolled sheet through a defect manufacturing device in the alloying bin.
6. The method of claim 5, wherein the defect producing apparatus comprises a ceramic rod hingedly secured to a cooling tube of the alloying bin.
7. The method of claim 6, wherein the simulation test device further comprises a style clip and a style clip rod, the style clip being attached at one end of the style clip rod, the method further comprising:
through style clamp centre gripping the style cold-rolled sheet, through the flexible control of control style clamping bar the style cold-rolled sheet is in heating storehouse, cooling storehouse, and move between the alloying storehouse.
8. The method of claim 7, further comprising:
in the process of controlling the pattern cold-rolled sheet to move among the heating bin, the cooling bin and the alloying bin, the distance change value between the pattern cold-rolled sheet and the inner wall of the simulation test device is controlled to be less than 2mm.
9. The method of any one of claims 1 to 8, wherein the defect micro-feature data comprises micro-topography and defect grain features.
10. The method of claim 9, further comprising:
acquiring microscopic defect characteristic data of the cold-rolled sample plate generated in each process section as reference data;
acquiring micro-feature data of defects of a cold-rolled sheet in the actual production process of the continuous annealing process stage as data to be verified;
and positioning the process section of the cold-rolled sheet with the defects in the actual production process in the continuous annealing process stage based on the data to be verified and the reference data.
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| CN110184445A (en) * | 2019-07-05 | 2019-08-30 | 安徽工业大学 | A kind of test method of furnace trial device |
| CN111638154A (en) * | 2020-06-03 | 2020-09-08 | 北京首钢股份有限公司 | Method for researching steel billet in heating section |
| KR20210079817A (en) * | 2019-12-20 | 2021-06-30 | 주식회사 포스코 | Manufacturing apparatus and method for galvanized annealed steel plate |
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| CN110184445A (en) * | 2019-07-05 | 2019-08-30 | 安徽工业大学 | A kind of test method of furnace trial device |
| KR20210079817A (en) * | 2019-12-20 | 2021-06-30 | 주식회사 포스코 | Manufacturing apparatus and method for galvanized annealed steel plate |
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