Method, device, equipment and medium for adjusting flatness of thin-gauge high-strength steel coated with a layer
By adjusting the parameters in the finishing and straightening processes, the problems of C-warping and edge waviness in thin-gauge zinc-iron alloy coated high-strength steel were solved, achieving high-quality plate shape adjustment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHOUGANG GROUP CO LTD
- Filing Date
- 2025-01-26
- Publication Date
- 2026-06-19
AI Technical Summary
When producing thin-gauge zinc-iron alloy coated high-strength steel, C-curve and edge waviness are common sheet shape problems.
By adjusting parameters in the finishing and straightening processes, such as the working roll diameter, roll length, crown, support roll diameter, and roll length of the finishing machine, the finishing elongation and bending roll force are controlled, and straightening roll sets are used instead of bending roll sets during the straightening process to reduce C-warping and edge waviness defects.
It effectively reduces C-curve and edge waviness defects in thin-gauge high-strength steel, improving surface quality.
Smart Images
Figure CN119634458B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of metallurgical technology, and in particular to a method, apparatus, equipment and medium for adjusting the shape of thin-gauge coated high-strength steel. Background Technology
[0002] Hot-dip galvanized steel sheet and strip are among the most widely used corrosion-resistant steel materials, and are extensively used in light industry, home appliances, automobiles, and construction. Depending on the coating composition, they can be classified as pure zinc coating, zinc-iron alloy coating, aluminum-zinc alloy coating, etc.
[0003] In existing technology, pure zinc steel sheets are passed through an air knife after exiting the zinc bath, and then entered into an alloying furnace before the coating solidifies. The furnace is heated to approximately 450-560℃, allowing the zinc coating to diffuse between the zinc and the base iron, resulting in a zinc-iron alloy coated zinc sheet. Compared to traditional pure zinc coated zinc sheets, zinc-iron alloy coated zinc sheets exhibit superior weldability, corrosion resistance, heat resistance, and stone impact resistance.
[0004] However, when producing thin-gauge zinc-iron alloy coated high-strength steel using the above method, C-warping and edge waviness problems are prone to occur. Therefore, how to reduce C-warping and edge waviness problems in the production of thin-gauge zinc-iron alloy coated high-strength steel is a technical problem that urgently needs to be solved. Summary of the Invention
[0005] In view of the above problems, this application is made to provide a method, apparatus, equipment and medium for adjusting the shape of thin-gauge coated high-strength steel to solve the above problems. The method involves first smoothing the thin-gauge coated high-strength steel. During smoothing, the bending roller force of the smoothing machine should be between 600-1000KN and the smoothing elongation should be between 0.9-0.1%, so that the thin-gauge coated high-strength steel only produces C-warp defects during smoothing and minimizes edge waviness defects. After smoothing, tension straightening is performed. During tension straightening, the insertion amount of the bending roller group is adjusted to 0, that is, the bending roller is not used for tension straightening, and only the straightening roller group is used for tension straightening. This allows the tension straightening machine to concentrate its tension straightening capacity on eliminating C-warp defects. This method can greatly reduce the shape problems of C-warp and edge waviness of thin-gauge coated high-strength steel and improve its surface quality.
[0006] In a first aspect, this application provides a method for adjusting the shape of thin-gauge coated high-strength steel, the method comprising:
[0007] Obtain the thickness and width of thin-gauge high-strength steel;
[0008] During the finishing of the thin-gauge coated high-strength steel, the working roll diameter, working roll length, working roll crown, support roll diameter, and support roll length of the finishing machine are all adjusted to the corresponding target values, and the support roll profile curve is adjusted to the target curve; then, according to the thickness and the width, the finishing elongation of the finishing machine is adjusted to between 0.9% and 0.1%, and the bending roll force of the finishing machine is adjusted to between 600 and 1000 KN;
[0009] During the straightening of thin-gauge coated high-strength steel after finishing, the insertion amount of the bending roller group of the straightening machine is adjusted to 0. Then, according to the thickness and the width, the insertion amount of the straightening roller group of the straightening machine is adjusted to between 20-30mm, and the straightening elongation is adjusted to between 0.05-0.1%.
[0010] Optionally, the target value for the working roll diameter of the finishing machine is 400-450mm, the target value for the working roll length is 2100mm, and the target value for the working roll crown is between 0.08-0.12mm.
[0011] Optionally, the target value for the diameter of the support roller of the finishing machine is 900-950mm, the target value for the length of the support roller is 2050mm, and the target curve for the roller profile of the support roller is:
[0012] y(x) = 2.832 × 10 -16 x 5 +1.419×10 -13 x 4 +1.091×10 -9 x 3 -2.027×10 -6 x 2 +1.330×10 -3 x;
[0013] Where y represents the radial coordinate of the support roller and x represents the axial coordinate of the support roller.
[0014] Optionally, adjusting the finishing elongation of the finishing machine to between 0.9% and 0.1% based on the thickness and width, and adjusting the bending roller force of the finishing machine to between 600 and 1000 KN, includes:
[0015] Based on the thickness and width, the corresponding target finishing elongation and target finishing machine bending roll force are obtained by referring to the table.
[0016] The finishing elongation of the finishing machine is adjusted to the target finishing elongation, and the bending roll force of the finishing machine is adjusted to the target finishing machine bending roll force.
[0017] The target finishing elongation is between 0.9% and 0.1%, and the target finishing machine bending roller force is between 600 and 1000 kN.
[0018] Optionally, adjusting the insertion depth of the straightening roller group of the tension leveler to between 20-30mm and the tension leveling elongation to between 0.05-0.1% based on the thickness and width includes:
[0019] Based on the thickness and width, the corresponding target insertion amount and the corresponding target tensile elongation are obtained by looking up a table.
[0020] The insertion amount of the straightening roller group of the tension leveler is adjusted to the target insertion amount, and the tension leveling elongation is adjusted to the target tension leveling elongation.
[0021] The target insertion amount is between 20-30 mm, and the target tensile elongation is between 0.05-0.1%.
[0022] Optionally, before feeding the finished thin-gauge coated high-strength steel into the tension leveler for tension leveling, the method further includes:
[0023] The working roll diameter of the straightening roll group is adjusted to 70-80mm, the working roll diameter of the bending roll group is adjusted to 70-80mm, and the support roll diameter of the straightening roll group is adjusted to 240-250mm.
[0024] Optionally, the method further includes:
[0025] During the finishing of the thin-gauge coated high-strength steel, the roughness fluctuation range of the work roll body of the finishing machine is controlled to be less than 10%.
[0026] Secondly, this application provides a sheet shape adjustment device for thin-gauge coated high-strength steel, the device comprising:
[0027] The acquisition module is used to obtain the thickness and width of thin-gauge high-strength steel.
[0028] The first adjustment module is used to adjust the working roll diameter, working roll length, working roll crown, support roll diameter, and support roll length of the finishing machine to the corresponding target values during the finishing of the thin-gauge coated high-strength steel, and to adjust the support roll profile curve to the target curve; then, according to the thickness and the width, the finishing elongation of the finishing machine is adjusted to between 0.9% and 0.1%, and the bending roll force of the finishing machine is adjusted to between 600 and 1000 kN.
[0029] The second adjustment module is used to adjust the insertion amount of the bending roller group of the tension leveler to 0 during the tension leveling process of feeding the thin-gauge coated high-strength steel after finishing into the tension leveler; then, according to the thickness and the width, the insertion amount of the straightening roller group of the tension leveler is adjusted to between 20-30mm, and the tension leveling elongation is adjusted to between 0.05-0.1%.
[0030] Optionally, the target value for the working roll diameter of the finishing machine is 400-450mm, the target value for the working roll length is 2100mm, and the target value for the working roll crown is between 0.08-0.12mm.
[0031] Optionally, the target value for the diameter of the support roller of the finishing machine is 900-950mm, the target value for the length of the support roller is 2050mm, and the target curve for the roller profile of the support roller is:
[0032] y(x) = 2.832 × 10 -16 x 5 +1.419×10 -13 x 4 +1.091×10 -9 x 3 -2.027×10 -6 x 2 +1.330×10 -3 x;
[0033] Where y represents the radial coordinate of the support roller and x represents the axial coordinate of the support roller.
[0034] Optionally, the first adjustment module is also used for:
[0035] Based on the thickness and width, the corresponding target finishing elongation and target finishing machine bending roll force are obtained by referring to the table.
[0036] The finishing elongation of the finishing machine is adjusted to the target finishing elongation, and the bending roll force of the finishing machine is adjusted to the target finishing machine bending roll force.
[0037] The target finishing elongation is between 0.9% and 0.1%, and the target finishing machine bending roller force is between 600 and 1000 kN.
[0038] Optionally, the second adjustment module is also used for:
[0039] Based on the thickness and width, the corresponding target insertion amount and the corresponding target tensile elongation are obtained by looking up a table.
[0040] The insertion amount of the straightening roller group of the tension leveler is adjusted to the target insertion amount, and the tension leveling elongation is adjusted to the target tension leveling elongation.
[0041] The target insertion amount is between 20-30 mm, and the target tensile elongation is between 0.05-0.1%.
[0042] Optionally, before feeding the finished thin-gauge coated high-strength steel into the tension leveler for tension leveling, the device further includes a third adjustment module, used for:
[0043] The working roll diameter of the straightening roll group is adjusted to 70-80mm, the working roll diameter of the bending roll group is adjusted to 70-80mm, and the support roll diameter of the straightening roll group is adjusted to 240-250mm.
[0044] Optionally, the device further includes a control module for:
[0045] During the finishing of the thin-gauge coated high-strength steel, the roughness fluctuation range of the work roll body of the finishing machine is controlled to be less than 10%.
[0046] Thirdly, this application provides an electronic device, including: a memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, and the processor executing the computer instructions to perform the method as described in the first aspect.
[0047] Fourthly, this application provides a computer-readable storage medium storing computer instructions for causing the computer to perform the method described in the first aspect.
[0048] The technical solutions provided in this application embodiment have at least the following technical effects or advantages:
[0049] This application provides a method, apparatus, equipment, and medium for adjusting the shape of thin-gauge coated high-strength steel. This method can obtain the thickness and width of the thin-gauge coated high-strength steel. During the finishing process of the thin-gauge coated high-strength steel, the working roll diameter, working roll length, working roll crown, support roll diameter, and support roll length of the finishing machine are all adjusted to corresponding target values, and the support roll profile curve is adjusted to the target curve. Then, based on the thickness and width, the finishing elongation rate of the finishing machine is adjusted to between 0.9% and 0.1%, and the bending roll force of the finishing machine is adjusted to between 600 and 1000 kN, so as to ensure the thin-gauge coated high-strength steel has the desired shape. During the finishing process, high-strength steel should be treated to minimize edge waviness defects and minimize C-warp defects. When the finished thin-gauge coated high-strength steel is fed into the tension leveler, the insertion depth of the bending roller group of the tension leveler should be adjusted to 0. Then, depending on the thickness and width, the insertion depth of the straightening roller group of the tension leveler should be adjusted to between 20-30mm, and the tension leveling elongation should be adjusted to between 0.05-0.1%. That is, the bending roller group is not used, and only the straightening roller group is used. This allows the tension leveler to concentrate its tensioning capacity on eliminating C-warp defects. This method can greatly reduce the C-warp and edge waviness problems of thin-gauge coated high-strength steel and improve its surface quality.
[0050] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0051] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0052] Figure 1 This is a flowchart of a method for adjusting the shape of thin-gauge coated high-strength steel according to an embodiment of this application;
[0053] Figure 2 This is a schematic diagram of a roller assembly structure for a tension leveling machine provided in an embodiment of this application;
[0054] Figure 3 This is a structural block diagram of a thin-gauge coated high-strength steel plate shape adjustment device provided in an embodiment of this application. Detailed Implementation
[0055] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0056] Figure 1This is a flowchart of a method for adjusting the shape of thin-gauge coated high-strength steel according to an embodiment of this application, as shown below. Figure 1 As shown, the method includes:
[0057] Step S110: Obtain the thickness and width of the thin-gauge high-strength steel.
[0058] In this embodiment, the yield strength of high-strength steel is generally between 500-700 MPa, while thin specifications generally refer to strip steel with a thickness of 0.5-1.0 mm and a width of 800-1200 mm. This application mainly focuses on adjusting the shape of thin-specification zinc-iron alloy coated high-strength steel to eliminate its C-warping and edge waviness defects. Therefore, it is necessary to obtain the thickness and width of the thin-specification coated high-strength steel. Different production parameters will be used for thin-specification zinc-iron alloy coated high-strength steel with different thicknesses and widths to better eliminate C-warping and edge waviness defects.
[0059] Step S120: During the finishing of thin-gauge coated high-strength steel, adjust the working roll diameter, working roll length, working roll crown, support roll diameter, and support roll length of the finishing machine to the corresponding target values, and adjust the support roll profile curve to the target curve; then, according to the thickness and width, adjust the finishing elongation of the finishing machine to between 0.9% and 0.1%, and adjust the bending roll force of the finishing machine to between 600 and 1000 KN.
[0060] In this embodiment, a higher bending roller force in the finishing machine makes it easier to generate C-warp defects, while a lower bending roller force makes it easier to generate edge waviness defects. Therefore, the bending roller force in the finishing machine is set between 600-1000KN. Using a larger bending roller force can minimize the generation of edge waviness defects in thin-gauge coated high-strength steel during finishing, resulting only in C-warp defects. Furthermore, setting the finishing elongation rate between 0.9-0.1% makes the finishing machine more suitable for finishing thin-gauge steel, preventing edge waviness defects during the finishing process.
[0061] Step S130: When feeding the finished thin-gauge coated high-strength steel into the tension leveler for tension leveling, adjust the insertion amount of the bending roller group of the tension leveler to 0; then, according to the thickness and width, adjust the insertion amount of the straightening roller group of the tension leveler to between 20-30mm, and adjust the tension leveling elongation rate to between 0.05-0.1%.
[0062] Figure 2 This is a schematic diagram of a roller group structure for a tension leveling machine provided in an embodiment of the present invention, as shown below. Figure 2 As shown, the strip straightening machine has a "two-bending-one-straightening" structure, including a first bending roller group 1, a second bending roller group 2, a straightening roller group 3, and a tension roller group 4, in which thin-gauge coated high-strength steel 5 operates. Among them, the first bending roller group 1 and the second bending roller group 2 are mainly used to eliminate edge waviness defects of the strip, while the straightening roller group 3 is mainly used to eliminate C-warp defects of the strip.
[0063] In this embodiment, during the tension straightening process of the thin-gauge coated high-strength steel after finishing, the insertion depth of the two bending roller groups is adjusted to 0, the insertion depth of the straightening roller group of the tension straightener is set between 20-30mm, and the tension straightening elongation is set between 0.05-0.1%. This allows the tension straightener to concentrate all its capacity on eliminating the C-warp defects remaining after finishing, instead of dispersing its capacity to correct the edge waviness defects of the thin-gauge coated high-strength steel. In this way, the edge waviness defects are eliminated after finishing, and the C-warp defects are eliminated after tension straightening, resulting in a significant reduction in C-warp and edge waviness defects in the final thin-gauge coated high-strength steel, thereby improving surface quality while ensuring production efficiency.
[0064] Optionally, the target values for the working roll diameter of the finishing machine are 400-450mm, the target value for the working roll length is 2100mm, and the target value for the working roll crown is between 0.08-0.12mm.
[0065] In this embodiment, considering the thickness and width range of thin-gauge coated high-strength steel, the finishing machine can select a work roll with a diameter of 400-450mm and a roll length of 2100mm. The work roll crown grinding is 0.08-0.12mm, which can better perform finishing of thin-gauge coated high-strength steel and help eliminate edge defects.
[0066] Optionally, the target values for the support roller diameter of the finishing machine are 900-950mm and the target value for the support roller length is 2050mm. The target curve for the support roller profile is as follows:
[0067] y(x) = 2.832 × 10 -16 x 5 +1.419×10 -13 x 4 +1.091×10 -9 x 3 -2.027×10 -6 x 2 +1.330×10 -3 x(Formula 1);
[0068] Where y represents the radial coordinate of the support roll and x represents the axial coordinate of the support roll.
[0069] In this embodiment, considering the thickness and width range of thin-gauge coated high-strength steel, a support roller with a diameter of 900-950mm and a length of 2050mm can also be selected. The support roller is ground according to the target curve, which can better perform the finishing of thin-gauge coated high-strength steel and help eliminate edge defects.
[0070] Optionally, step S120 includes:
[0071] Based on the thickness and width, refer to the table to obtain the corresponding target finishing elongation and target finishing machine bending roll force; adjust the finishing elongation of the finishing machine to the target finishing elongation and adjust the finishing machine bending roll force to the target finishing machine bending roll force.
[0072] The target finishing elongation is between 0.9% and 0.1%, and the target finishing machine bending roll force is between 600 and 1000 kN.
[0073] In this embodiment, thin-gauge coated high-strength steel with different thicknesses and widths has different finishing elongation and bending roll force. Table 1 is a table showing the correspondence between thickness, width, finishing elongation, and finishing machine bending roll force provided in an embodiment of the present invention.
[0074] Table 1
[0075]
[0076]
[0077] As shown in Table 1, the finishing elongation and finishing machine bending force can be found from the table according to the thickness and width. When the thickness and width are the midpoint of the thickness and width ranges in the table, the corresponding finishing elongation and finishing machine bending force are obtained by linear interpolation.
[0078] Optionally, step S130 includes:
[0079] Based on the thickness and width, look up the corresponding target insertion amount and target tension straightening elongation in the table; adjust the insertion amount of the straightening roller group of the tension straightening machine to the target insertion amount and the tension straightening elongation to the target tension straightening elongation.
[0080] The target insertion depth is between 20-30 mm, and the target tensile elongation is between 0.05-0.1%.
[0081] In this embodiment, the target insertion amount and target tensile elongation are different for thin-gauge coated high-strength steel with different thicknesses and widths. Table 2 is a table showing the correspondence between thickness, width, target insertion amount, and target tensile elongation provided in this embodiment of the invention.
[0082] Table 2
[0083]
[0084] As shown in Table 2, the target insertion amount and target stretching elongation can be found from the table based on the thickness and width. When the thickness and width are the midpoint of the thickness and width ranges in the table, the corresponding target insertion amount and target stretching elongation are obtained by linear interpolation.
[0085] Optionally, the working roll diameter of the straightening roll group can be adjusted to 70-80mm, the working roll diameter of the bending roll group can be adjusted to 70-80mm, and the support roll diameter of the straightening roll group can be adjusted to 240-250mm.
[0086] In this embodiment, considering the thickness and width range of thin-gauge coated high-strength steel, straightening roller group work rolls and bending roller group work rolls with diameters of 70-80mm can be selected, and straightening roller group support rolls with diameters of 240-250mm can be selected, which is more conducive to eliminating the C-warping defect of thin-gauge coated high-strength steel.
[0087] Optionally, during the finishing of thin-gauge coated high-strength steel, the roughness fluctuation range of the work roll body of the finishing machine is controlled to be less than 10%.
[0088] This can be understood as follows: during the finishing process of thin-gauge high-strength steel with a coating, it is necessary to reasonably control the roughness of the working rolls of the finishing machine so that its fluctuation range is less than 10%. This will allow the thin-gauge high-strength steel to run more smoothly and avoid edge defects.
[0089] To facilitate understanding of this application, a specific example is provided below:
[0090] When adjusting the shape of thin-gauge zinc-iron alloy coated high-strength steel strips with a thickness of 0.8mm and a width of 1000mm, the finishing machine selects work rolls with a diameter of 400-450mm and a length of 2100mm. The convexity of the work rolls is ground to 0.08-0.12mm, and the fluctuation range of the roll body roughness is controlled to be less than 10%. Support rolls with a diameter of 900-950mm and a roll body length of 2050mm are selected and ground according to Formula 1. The finishing elongation rate is set to 0.9%, and the bending roll force of the finishing machine is set to 700KN. The bending roll insertion of the tension leveler is 0, the straightening roll insertion is 20mm, and the tension leveling elongation rate is 0.05%. The raw strip steel is first finished to eliminate edge waviness defects and generate C-warp defects. Then, tension leveling is performed to eliminate C-warp defects. The entire production process is stable, and the thin-gauge zinc-iron alloy coated high-strength steel has no C-warp or edge waviness defects, and the surface quality is good.
[0091] Based on the same concept, this application also provides a plate shape adjustment device for thin-gauge coated high-strength steel. Figure 3 This is a structural block diagram of a thin-gauge coated high-strength steel plate shape adjustment device provided in an embodiment of this application, as shown below. Figure 3 As shown, the device 300 includes an acquisition module 301, a first adjustment module 302, and a second adjustment module 303.
[0092] The acquisition module 301 is used to acquire the thickness and width of thin-gauge high-strength steel.
[0093] The first adjustment module 302 is used to adjust the working roll diameter, working roll length, working roll crown, support roll diameter, and support roll length of the finishing machine to the corresponding target values during the finishing of thin-gauge coated high-strength steel, and to adjust the support roll profile curve to the target curve; then, according to the thickness and width, the finishing elongation of the finishing machine is adjusted to between 0.9% and 0.1%, and the bending roll force of the finishing machine is adjusted to between 600 and 1000 KN;
[0094] The second adjustment module 303 is used to adjust the insertion amount of the bending roller group of the tension leveler to 0 during the tension leveling process of feeding the thin-gauge coated high-strength steel after finishing into the tension leveler; and then, according to the thickness and width, adjust the insertion amount of the straightening roller group of the tension leveler to between 20-30mm, and adjust the tension leveling elongation rate to between 0.05-0.1%.
[0095] Optionally, the target values for the working roll diameter of the finishing machine are 400-450mm, the target value for the working roll length is 2100mm, and the target value for the working roll crown is between 0.08-0.12mm.
[0096] Optionally, the target values for the support roller diameter of the finishing machine are 900-950mm and the target value for the support roller length is 2050mm. The target curve for the support roller profile is as follows:
[0097] y(x) = 2.832 × 10 -16 x 5 +1.419×10 -13 x 4 +1.091×10 -9 x 3 -2.027×10 -6 x 2 +1.330×10 -3 x;
[0098] Where y represents the radial coordinate of the support roll and x represents the axial coordinate of the support roll.
[0099] Optionally, the first adjustment module 302 is also used for:
[0100] Based on the thickness and width, the corresponding target finishing elongation and target finishing machine bending roll force are obtained by referring to the table.
[0101] Adjust the finishing elongation of the finishing machine to the target finishing elongation and adjust the bending roll force of the finishing machine to the target finishing roll force;
[0102] The target finishing elongation is between 0.9% and 0.1%, and the target finishing machine bending roll force is between 600 and 1000 kN.
[0103] Optionally, the second adjustment module 303 is also used for:
[0104] Based on the thickness and width, look up the corresponding target insertion amount and the corresponding target tension elongation rate in the table;
[0105] Adjust the insertion amount of the straightening roller group of the tension leveler to the target insertion amount and the tension leveling elongation to the target tension leveling elongation;
[0106] The target insertion depth is between 20-30 mm, and the target tensile elongation is between 0.05-0.1%.
[0107] Optionally, before feeding the finished thin-gauge coated high-strength steel into the tension leveler for tension leveling, the device 300 also includes a third adjustment module for:
[0108] Adjust the working roll diameter of the straightening roll group to 70-80mm, the working roll diameter of the bending roll group to 70-80mm, and the support roll diameter of the straightening roll group to 240-250mm.
[0109] Optionally, the device 300 also includes a control module for:
[0110] During the finishing of thin-gauge coated high-strength steel, the roughness fluctuation range of the work roll body of the finishing machine is controlled to be less than 10%.
[0111] It is understood that the device provided in the above embodiments is only illustrated by the division of the above functional modules. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above.
[0112] This application also provides an electronic device that may include a processor and a memory, wherein the processor and the memory may be connected to each other via a bus or other means.
[0113] The processor may be a central processing unit (CPU), an application-specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.
[0114] Memory may include mass storage for data or instructions. For example, and not limitingly, memory may include hard disk drives (HDDs), floppy disk drives, flash memory, optical disks, magneto-optical disks, magnetic tape, or Universal Serial Bus (USB) drives, or combinations of two or more of these. Where appropriate, memory may include removable or non-removable (or fixed) media. Where appropriate, memory may be internal or external to an electronic device. In a particular embodiment, memory may be non-volatile solid-state memory.
[0115] In one instance, the memory may be read-only memory (ROM). In one instance, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM), or flash memory, or a combination of two or more of these.
[0116] The processor reads and executes computer program instructions stored in the memory to implement any of the sheet shape adjustment methods for thin-gauge coated high-strength steel in the above embodiments.
[0117] In one example, the electronic device may further include a communication interface and a bus. The processor, memory, and communication interface are connected via the bus to communicate with each other. The communication interface is primarily used to enable communication between the various modules, devices, units, and / or equipment in the embodiments of this application. Where appropriate, the bus may include one or more buses.
[0118] Furthermore, in conjunction with the sheet shape adjustment method for thin-gauge coated high-strength steel in the above embodiments, this application embodiment can provide a computer-readable storage medium for implementation. This computer-readable storage medium stores computer program instructions; when executed by a processor, these computer program instructions implement any of the sheet shape adjustment methods for thin-gauge coated high-strength steel in the above embodiments.
[0119] The technical solutions described in the embodiments of this application above have at least the following technical effects or advantages:
[0120] This application provides a method, apparatus, equipment, and medium for adjusting the shape of thin-gauge coated high-strength steel. This method can obtain the thickness and width of the thin-gauge coated high-strength steel. During the finishing process of the thin-gauge coated high-strength steel, the working roll diameter, working roll length, working roll crown, support roll diameter, and support roll length of the finishing machine are all adjusted to corresponding target values, and the support roll profile curve is adjusted to the target curve. Then, based on the thickness and width, the finishing elongation and bending force of the finishing machine are adjusted to corresponding target values. The target value for the finishing elongation is between 0.9% and 0.1%, and the target value for the bending force is between 600 and 1000 kN, so as to ensure the shape of the thin-gauge coated high-strength steel... During the finishing process, edge waviness defects should be minimized, with only C-warp defects being generated. When the finished thin-gauge coated high-strength steel is fed into the tension leveler, the insertion depth of the bending roller group of the tension leveler is adjusted to 0. Then, based on the thickness and width, the insertion depth of the straightening roller group of the tension leveler and the tension leveling elongation are adjusted to the target insertion depth and the target tension leveling elongation. The target insertion depth is between 20-30mm, and the target tension leveling elongation is between 0.05-0.1%. That is, the bending roller group is not used, and only the straightening roller group is used, so that the tension leveler can concentrate its tensioning capacity on eliminating C-warp defects. This method can greatly reduce the C-warp and edge waviness problems of thin-gauge coated high-strength steel and improve its surface quality.
[0121] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of this application may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.
[0122] Similarly, it should be understood that, in order to simplify this disclosure and aid in understanding one or more of the various aspects of the application, in the above description of exemplary embodiments of the application, various features of the application are sometimes grouped together in a single embodiment, figure, or description thereof. However, this approach to disclosure should not be construed as reflecting an intention that the claimed application requires more features than are expressly recited in each claim. Rather, as reflected in the following claims, the application aspect comprises fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the application.
[0123] It should be noted that the above embodiments are illustrative of this application and not limiting of it, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "a" or "an" preceding a component does not exclude the presence of a plurality of such components. This application can be implemented by means of hardware comprising several different components and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.
Claims
1. A method of adjusting the shape of a sheet of thin-gauge, high-strength steel coated with a layer of zinc or zinc alloy, characterized in that, The method includes: The thickness and width of the thin-gauge coated high-strength steel are obtained; the thin-gauge coated high-strength steel is a thin-gauge zinc-iron alloy coated high-strength steel. During the finishing of the thin-gauge coated high-strength steel, the working roll diameter, working roll length, working roll crown, support roll diameter, and support roll length of the finishing machine are all adjusted to the corresponding target values, and the support roll profile curve is adjusted to the target curve; then, according to the thickness and the width, the finishing elongation of the finishing machine is adjusted to between 0.9% and 1.1%, and the bending roll force of the finishing machine is adjusted to between 600 and 1000 KN; During the tension straightening process of feeding the finished thin-gauge coated high-strength steel into the tension straightening machine, the insertion amount of the bending roller group of the tension straightening machine is adjusted to 0; then, according to the thickness and the width, the insertion amount of the straightening roller group of the tension straightening machine is adjusted to between 20-30mm, and the tension straightening elongation is adjusted to between 0.05-0.1%. The target values for the working roll diameter of the finishing machine are 400-450mm, the target value for the working roll length is 2100mm, and the target value for the working roll crown is between 0.08-0.12mm; the target values for the support roll diameter are 900-950mm and the target value for the support roll length is 2050mm, and the target curve for the support roll profile is as follows: ； Where y represents the radial coordinate of the support roller and x represents the axial coordinate of the support roller.
2. The method for adjusting the shape of thin-gauge coated high-strength steel according to claim 1, characterized in that, The step of adjusting the finishing elongation of the finishing machine to between 0.9% and 1.1% based on the thickness and width, and adjusting the bending roller force of the finishing machine to between 600 and 1000 kN, includes: Based on the thickness and width, the corresponding target finishing elongation and target finishing machine bending roll force are obtained by referring to the table. The finishing elongation of the finishing machine is adjusted to the target finishing elongation, and the bending roll force of the finishing machine is adjusted to the target finishing machine bending roll force. The target finishing elongation is between 0.9% and 1.1%, and the target finishing machine bending roller force is between 600 and 1000 kN.
3. The sheet shape adjustment method of a thin-gauge high-strength steel sheet according to claim 1, characterized by, The step of adjusting the insertion depth of the straightening roller group of the tension leveler to between 20-30mm and the tension leveling elongation to between 0.05-0.1% based on the thickness and width includes: Based on the thickness and width, the corresponding target insertion amount and the corresponding target tensile elongation are obtained by looking up a table. The insertion amount of the straightening roller group of the tension leveler is adjusted to the target insertion amount, and the tension leveling elongation is adjusted to the target tension leveling elongation. The target insertion amount is between 20-30 mm, and the target stretching elongation is between 0.05-0.1%.
4. The sheet shape adjustment method of a thin-gauge high-strength steel sheet according to claim 1, characterized by, Before feeding the finished thin-gauge coated high-strength steel into the tension leveler for tension leveling, the method further includes: The working roll diameter of the straightening roll group is adjusted to 70-80mm, the working roll diameter of the bending roll group is adjusted to 70-80mm, and the support roll diameter of the straightening roll group is adjusted to 240-250mm.
5. The sheet shape adjustment method of a thin-gauge high-strength steel sheet according to claim 1, characterized by, The method further includes: During the finishing of the thin-gauge coated high-strength steel, the roughness fluctuation range of the work roll body of the finishing machine is controlled to be less than 10%.
6. A sheet shape adjusting device for a thin-gauge plated high-strength steel, characterized by The device includes: The acquisition module is used to acquire the thickness and width of the thin-gauge coated high-strength steel; the thin-gauge coated high-strength steel is a thin-gauge zinc-iron alloy coated high-strength steel. The first adjustment module is used to adjust the working roll diameter, working roll length, working roll crown, support roll diameter, and support roll length of the finishing machine to the corresponding target values during the finishing of the thin-gauge coated high-strength steel, and to adjust the support roll profile curve to the target curve; then, according to the thickness and the width, the finishing elongation of the finishing machine is adjusted to between 0.9% and 1.1%, and the bending roll force of the finishing machine is adjusted to between 600 and 1000 kN. The second adjustment module is used to adjust the insertion amount of the bending roller group of the tension leveler to 0 during the tension leveling process of feeding the thin-gauge coated high-strength steel after finishing into the tension leveler; and then, according to the thickness and the width, adjust the insertion amount of the straightening roller group of the tension leveler to between 20-30mm, and adjust the tension leveling elongation to between 0.05-0.1%. The target values for the working roll diameter of the finishing machine are 400-450mm, the target value for the working roll length is 2100mm, and the target value for the working roll crown is between 0.08-0.12mm; the target values for the support roll diameter are 900-950mm and the target value for the support roll length is 2050mm, and the target curve for the support roll profile is as follows: ； Where y represents the radial coordinate of the support roller and x represents the axial coordinate of the support roller.
7. An electronic device, comprising: include: A memory and a processor, the memory and the processor being communicatively connected to each other, the memory storing computer instructions, the processor executing the computer instructions to perform the method of any one of claims 1-5.
8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions for causing the computer to perform the method of any one of claims 1-5.