Plate shape adjusting method, device and equipment for thin-specification plating high-strength steel and medium

Abstract

The invention discloses a plate shape adjusting method, device and equipment for thin-specification plating high-strength steel and a medium, and belongs to the technical field of metallurgy. The method comprises the steps that the thickness and the width of the thin-specification plating high-strength steel are obtained; in the finishing period of the thin-specification plating high-strength steel, the diameter, the length and the convexity of a working roller and the diameter and the length of a supporting roller of a finishing machine are all adjusted to be corresponding target values, and a roller shape curve of the supporting roller is adjusted to be a target curve; according to the thickness and the width, the finishing elongation of the finishing machine is adjusted to be 0.9-0.1%, and the roll bending force of the finishing machine is adjusted to be 600-1000 KN; adjusting the insertion amount of a bending roller group of a withdrawal and straightening machine to be 0 during the withdrawal and straightening process of the finished thin-specification coated high-strength steel fed into the withdrawal and straightening machine; and according to the thickness and the width, the insertion amount of a straightening roll set of the withdrawal and straightening machine is adjusted to be 20-30 mm, and the withdrawal and straightening elongation is adjusted to be 0.05-0.1%. According to the method, the plate shape problems of C warping and edge waves of the thin-specification plating high-strength steel can be greatly reduced.

Description

Technical Field

[0001] The present application relates to the field of metallurgical technology, and in particular to a method, device, equipment and medium for adjusting the plate shape of thin-gauge coated high-strength steel. Background Art

[0002] Hot-dip galvanized steel strip is one of the most commonly used products in anti-corrosion steel materials, and is widely used in light industry, home appliances, automobiles and construction industries. According to the different coating compositions, it can be divided into pure zinc coating, zinc-iron alloy coating, aluminum-zinc alloy coating, etc.

[0003] In the prior art, the pure zinc steel sheet is passed through an air knife after exiting the zinc pot, and enters an alloying furnace before the coating solidifies, where it is heated to about 450-560°C to diffuse the coating zinc with the matrix iron to obtain a zinc-iron alloyed zinc plate. Compared with the traditional pure zinc plated zinc plate, the zinc-iron alloyed zinc plate has excellent welding performance, corrosion resistance, heat resistance and stone impact resistance.

[0004] However, when the above method is used to produce thin-gauge zinc-iron alloyed high-strength steel, C-warping and edge wave problems are likely to occur. Therefore, how to reduce the C-warping and edge wave problems when producing thin-gauge zinc-iron alloyed high-strength steel is a technical problem that needs to be solved urgently. Summary of the invention

[0005] In view of the above problems, the present application is proposed to provide a plate shape adjustment method, device, equipment and medium for thin-gauge coated high-strength steel that solves the above problems. The thin-gauge coated high-strength steel can be firstly subjected to skinning. During the skinning process, the bending roll force of the skinning machine should be between 600-1000KN, and the skinning elongation should be between 0.9-0.1%, so that the thin-gauge coated high-strength steel only produces C-warping defects during skinning, and tries not to produce edge wave defects; after skinning, tensioning and straightening are carried out. During the tensioning and straightening process, the insertion amount of the bending roller group is adjusted to 0, that is, the bending roller is not used for tensioning and straightening, and only the straightening roller group is used for tensioning and straightening, so that the tensioning and straightening machine concentrates the tensioning and straightening capacity on eliminating C-warping defects. This method can greatly reduce the plate shape problems of C-warping and edge wave of thin-gauge coated high-strength steel and improve its surface quality.

[0006] In a first aspect, the present application provides a method for adjusting the plate shape of thin-gauge coated high-strength steel, the method comprising:

[0007] Obtain thickness and width of thin gauge coated high strength steel;

[0008] During the skin pass 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 skin pass mill are adjusted to corresponding target values, and the support roll profile curve is adjusted to the target curve; then, according to the thickness and the width, the skin pass elongation of the skin pass mill is adjusted to between 0.9-0.1%, and the bending roll force of the skin pass mill is adjusted to between 600-1000KN;

[0009] When the smoothed thin-gauge coated high-strength steel is fed into a straightening machine for straightening, the insertion amount of the bending roller set of the straightening machine is adjusted to 0; then, according to the thickness and the width, the insertion amount of the straightening roller set of the straightening machine is adjusted to between 20-30 mm, and the straightening elongation is adjusted to between 0.05-0.1%.

[0010] Optionally, the target value of the working roll diameter of the skin-finishing mill is 400-450 mm, the target value of the working roll length is 2100 mm, and the target value of the working roll crown is between 0.08-0.12 mm.

[0011] Optionally, the target value of the support roller diameter of the skin-pass mill is 900-950 mm and the target value of the support roller length is 2050 mm, and the target curve of the support roller profile curve 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] Wherein, y represents the radial coordinate of the support roller, and x represents the axial coordinate of the support roller.

[0014] Optionally, the skin pass elongation of the skin pass machine is adjusted between 0.9-0.1% and the bending roll force of the skin pass machine is adjusted between 600-1000 KN according to the thickness and the width, including:

[0015] According to the thickness and the width, a table is consulted to obtain a corresponding target skin-pass elongation and a target skin-pass mill bending roll force;

[0016] Adjusting the skin-pass elongation of the skin-pass mill to the target skin-pass elongation and adjusting the skin-pass mill bending roll force to the target skin-pass mill bending roll force;

[0017] Wherein, the target skin-finishing elongation is between 0.9% and 0.1%, and the target skin-finishing machine bending roll force is between 600 and 1000 KN.

[0018] Optionally, the straightening roller set insertion amount of the tension leveler is adjusted to between 20-30 mm and the tension leveling elongation is adjusted to between 0.05-0.1% according to the thickness and the width, including:

[0019] According to the thickness and the width, a table is looked up to obtain a corresponding target insertion amount and a corresponding target tensile straightening elongation;

[0020] Adjusting the insertion amount of the straightening roller set of the straightening machine to the target insertion amount and the straightening elongation to the target straightening elongation;

[0021] Wherein, the target insertion amount is between 20-30 mm, and the target tensile straightening elongation is between 0.05-0.1%.

[0022] Optionally, before feeding the skin-finished thin-gauge coated high-strength steel into the tension and straightening machine for tension and straightening, the method further comprises:

[0023] The diameter of the working rolls of the straightening roll group is adjusted to 70-80 mm, the diameter of the working rolls of the bending roll group is adjusted to 70-80 mm, and the diameter of the supporting rolls of the straightening roll group is adjusted to 240-250 mm.

[0024] Optionally, the method further includes:

[0025] During the skin-passing of the thin-gauge coated high-strength steel, the roughness fluctuation range of the working roll body of the skin-passing mill is controlled to be less than 10%.

[0026] In a second aspect, the present application provides a plate shape adjustment device for thin-gauge coated high-strength steel, the device comprising:

[0027] Acquisition module for acquiring the thickness and width of thin-gauge coated 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 skin-pass mill to corresponding target values ​​during skin-passing of the thin-gauge coated high-strength steel, and adjust the support roll profile curve to the target curve; and then adjust the skin-pass elongation of the skin-pass mill to between 0.9% and 0.1%, and adjust the bending roll force of the skin-pass mill to between 600 and 1000 KN according to the thickness and the width;

[0029] The second adjustment module is used to feed the thin-gauge coated high-strength steel after finishing into the straightening machine for straightening, and adjust the insertion amount of the bending roller group of the straightening machine 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%.

[0030] Optionally, the target value of the working roll diameter of the skin-finishing mill is 400-450 mm, the target value of the working roll length is 2100 mm, and the target value of the working roll crown is between 0.08-0.12 mm.

[0031] Optionally, the target value of the support roller diameter of the skin-pass mill is 900-950 mm and the target value of the support roller length is 2050 mm, and the target curve of the support roller profile curve 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] Wherein, 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 further used for:

[0035] According to the thickness and the width, a table is consulted to obtain a corresponding target skin-pass elongation and a target skin-pass mill bending roll force;

[0036] Adjusting the skin-pass elongation of the skin-pass mill to the target skin-pass elongation and adjusting the skin-pass mill bending roll force to the target skin-pass mill bending roll force;

[0037] Wherein, the target skin-finishing elongation is between 0.9% and 0.1%, and the target skin-finishing machine bending roll force is between 600 and 1000 KN.

[0038] Optionally, the second adjustment module is further used for:

[0039] According to the thickness and the width, a table is looked up to obtain a corresponding target insertion amount and a corresponding target tensile straightening elongation;

[0040] Adjusting the insertion amount of the straightening roller set of the straightening machine to the target insertion amount and the straightening elongation to the target straightening elongation;

[0041] Wherein, the target insertion amount is between 20-30 mm, and the target tensile straightening elongation is between 0.05-0.1%.

[0042] Optionally, before feeding the skin-finished thin-gauge coated high-strength steel into the tension and straightening machine for tension and straightening, the device further includes a third adjustment module for:

[0043] The diameter of the working rolls of the straightening roll group is adjusted to 70-80 mm, the diameter of the working rolls of the bending roll group is adjusted to 70-80 mm, and the diameter of the supporting rolls of the straightening roll group is adjusted to 240-250 mm.

[0044] Optionally, the device further comprises a control module, configured to:

[0045] During the skin-passing of the thin-gauge coated high-strength steel, the roughness fluctuation range of the working roll body of the skin-passing mill is controlled to be less than 10%.

[0046] In a third aspect, the present application provides an electronic device comprising: a memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method described in the first aspect by executing the computer instructions.

[0047] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable the computer to execute the method described in the first aspect.

[0048] The technical solution provided in the embodiments of the present application has at least the following technical effects or advantages:

[0049] The embodiments of the present application provide a plate shape adjustment method, device, equipment and medium for thin-gauge coated high-strength steel, which can obtain the thickness and width of the thin-gauge coated high-strength steel; during the skin-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 skin-finishing machine are adjusted to corresponding target values, and the support roll profile curve is adjusted to the target curve; then, according to the thickness and width, the skin-finishing elongation of the skin-finishing machine is adjusted to between 0.9-0.1%, and the bending roll force of the skin-finishing machine is adjusted to between 600-1000KN, so that the thin-gauge coated high-strength steel can be obtained. During the skin pass, the edge wave defect of steel is avoided as much as possible, and only C warping defect is generated; when the thin-gauge coated high-strength steel after skin pass is sent to the drawing and straightening machine for drawing and straightening, the insertion amount of the bending roller group of the drawing and straightening machine is adjusted to 0; then according to the thickness and width, the insertion amount of the straightening roller group of the drawing and straightening machine is adjusted between 20-30mm, and the drawing and straightening elongation is adjusted 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 drawing and straightening machine concentrates the drawing and straightening capacity on eliminating C warping defects. This method can greatly reduce the plate shape problems of C warping and edge wave 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 the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0052] Figure 1 It is a flow chart of a method for adjusting the plate shape of thin-gauge coated high-strength steel provided in an embodiment of the present application;

[0053] Figure 2 It is a schematic diagram of the structure of a roller group of a tensioning and leveling machine provided in an embodiment of the present application;

[0054] Figure 3 This is a structural block diagram of a plate shape adjustment device for thin-gauge coated high-strength steel provided in an embodiment of the present application. DETAILED DESCRIPTION

[0055] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0056] Figure 1 : is a flow chart of a method for adjusting the plate shape of thin-gauge coated high-strength steel provided in an embodiment of the present application, such as Figure 1 As shown, the method includes:

[0057] Step S110, obtaining the thickness and width of thin-gauge coated high-strength steel.

[0058] In this embodiment, the yield strength of high-strength steel is generally 500-700MPa, and thin gauge generally refers to strip steel with a thickness of 0.5-1.0mm and a width of 800-1200mm. This application mainly adjusts the plate shape of thin-gauge zinc-iron alloyed high-strength steel to eliminate its C-warping and edge wave defects. Therefore, it is necessary to obtain the thickness and width of thin-gauge zinc-iron alloyed high-strength steel. Different production parameters will be used for thin-gauge zinc-iron alloyed high-strength steel of different thicknesses and widths, so as to better eliminate C-warping and edge wave defects.

[0059] Step S120, during the skin pass of 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 skin pass mill are adjusted to corresponding target values, and the support roll profile curve is adjusted to the target curve; then, according to the thickness and width, the skin pass elongation of the skin pass mill is adjusted between 0.9-0.1%, and the bending roll force of the skin pass mill is adjusted between 600-1000KN.

[0060] In this embodiment, the greater the bending roll force of the skin-passing machine, the easier it is to produce C-warp defects, and the smaller the bending roll force, the easier it is to produce edge wave defects. Therefore, the bending roll force of the skin-passing machine is set between 600-1000KN. The use of a larger bending roll force can make the thin-gauge plated high-strength steel produce no edge wave defects as much as possible during the skin-passing period, and only produce C-warp defects. The skin-passing elongation is set between 0.9-0.1%, so that the skin-passing machine is more suitable for skin-passing of thin-gauge steel, so that no edge wave defects are produced during the skin-passing period.

[0061] Step S130, during which the thin-gauge coated high-strength steel after skinning is fed into a straightening machine for straightening, the insertion amount of the bending roller set of the straightening machine is adjusted to 0; then, according to the thickness and width, the insertion amount of the straightening roller set of the straightening machine is adjusted to between 20-30 mm, and the straightening elongation is adjusted to between 0.05-0.1%.

[0062] Figure 2 Schematic diagram of the structure of a roller group of a tensioning and straightening machine provided by an embodiment of the present invention, such as Figure 2 As shown, the tension and leveling machine is a "two-bending and one-leveling" 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 runs. Among them, the first bending roller group 1 and the second bending roller group 2 are mainly used to eliminate the edge wave defects of the strip, and the straightening roller group 3 is mainly used to eliminate the C-warping defects of the strip.

[0063] In this embodiment, during the tensioning and straightening of the thin-gauge coated high-strength steel after skinning, the insertion amount of the two bending roller groups is adjusted to 0, the insertion amount of the straightening roller group of the tension and straightening machine is set between 20-30mm, and the tension and straightening elongation is set between 0.05-0.1%, so that the tension and straightening machine does not need to disperse its capacity to correct the edge wave defects of the thin-gauge coated high-strength steel, but concentrates all its capacity on eliminating the C-warping defects remaining after skinning. In this way, the edge wave defects are eliminated after skinning, and the C-warping defects are eliminated after tensioning, so that the thin-gauge coated high-strength steel finally produced has greatly reduced C-warping and edge wave defects, and the surface quality is improved on the basis of ensuring production efficiency.

[0064] Optionally, the target value of the working roll diameter of the skin-finishing mill is 400-450 mm, the target value of the working roll length is 2100 mm, and the target value of the working roll crown is between 0.08-0.12 mm.

[0065] In this embodiment, considering the thickness range and width range of thin-gauge coated high-strength steel, the skin-finishing machine can select a working roll with a diameter of 400-450mm and a roll length of 2100mm, and the convexity of the working roll is ground to 0.08-0.12mm, which can better perform skin-finishing of thin-gauge coated high-strength steel and help eliminate edge wave defects.

[0066] Optionally, the target value of the support roller diameter of the skin-pass mill is 900-950 mm and the target value of the support roller length is 2050 mm, and the target curve of the support roller profile is:

[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] Among them, y represents the radial coordinate of the support roller, and x represents the axial coordinate of the support roller.

[0069] In this embodiment, considering the thickness range and width range of thin-gauge coated high-strength steel, a support roller with a diameter of 900-950mm and a roller 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 wave defects.

[0070] Optionally, step S120 includes:

[0071] According to the thickness and width, the corresponding target skin-pass elongation and target skin-pass mill bending force are obtained by looking up the table; the skin-pass elongation of the skin-pass mill is adjusted to the target skin-pass elongation and the skin-pass mill bending force is adjusted to the target skin-pass mill bending force.

[0072] Among them, the target skin-finishing elongation is between 0.9-0.1%, and the target skin-finishing machine bending roll force is between 600-1000KN.

[0073] In this embodiment, thin-gauge coated high-strength steels of different thicknesses and widths have different skin-pass elongation and bending roll forces. Table 1 is a corresponding relationship table of thickness, width, skin-pass elongation and skin-pass machine bending roll force provided by an embodiment of the present invention.

[0074] Table 1

[0075]

[0076]

[0077] As shown in Table 1, according to the size of thickness and width, the size of the skin-finishing elongation and the size of the skin-finishing machine bending roll force can be found from the table. When the thickness and width are the middle values ​​of the thickness range and width range in the table, the linear interpolation method is used to obtain the corresponding skin-finishing elongation and skin-finishing machine bending roll force.

[0078] Optionally, step S130 includes:

[0079] According to the thickness and width, the corresponding target insertion amount and the corresponding target straightening elongation are obtained by looking up the table; the insertion amount of the straightening roller group of the straightening machine is adjusted to the target insertion amount and the straightening elongation is adjusted to the target straightening elongation.

[0080] Among them, the target insertion amount 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 straightening elongation of thin-gauge plated high-strength steel of different thicknesses and widths are also different. Table 2 is a corresponding relationship table of thickness, width, target insertion amount and target straightening elongation provided by an embodiment of the present invention.

[0082] Table 2

[0083]

[0084] As shown in Table 2, according to the size of the thickness and width, the target insertion amount and the target tensile straightening elongation can be found from the table. When the thickness and width are the middle values ​​of the thickness range and width range in the table, the linear interpolation method is used to obtain the corresponding target insertion amount and target tensile straightening elongation.

[0085] Optionally, the diameter of the working rolls of the straightening roll group is adjusted to 70-80 mm, the diameter of the working rolls of the bending roll group is adjusted to 70-80 mm, and the diameter of the supporting rolls of the straightening roll group is adjusted to 240-250 mm.

[0086] In this embodiment, considering the thickness range and width range of thin-gauge coated high-strength steel, the working rolls of the straightening roll group and the working rolls of the bending roll group with a diameter of 70-80mm can be selected, and the supporting rolls of the straightening roll group with a diameter 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 skin-passing of thin-gauge coated high-strength steel, the roughness fluctuation range of the working roll body of the skin-passing mill is controlled to be less than 10%.

[0088] It can be understood that during the skin-finishing of high-strength steel with thin-gauge coated high-strength steel, the roughness of the skin-finishing machine's working roller should be reasonably controlled so that its fluctuation range is less than 10%, which can make the thin-gauge coated high-strength steel run more smoothly without producing edge wave defects.

[0089] In order to facilitate understanding of this application, a specific example is given below for illustration:

[0090] When adjusting the plate shape of thin-gauge zinc-iron alloyed high-strength steel with a thickness of 0.8mm and a width of 1000mm, the skin-passing machine selects a working roll with a diameter of 400-450mm and a length of 2100mm, grinds the crown of the working roll to 0.08-0.12mm, and controls the fluctuation range of the roller roughness to be less than 10%; selects a support roll with a diameter of 900-950mm and a roller length of 2050mm, grinds the support roll according to formula 1, sets the skin-passing elongation to 0.9%, and sets the skin-passing machine bending roll force to 700KN. The insertion amount of the bending roll of the straightening machine is 0, the insertion amount of the straightening roll is 20mm, and the straightening elongation is 0.05%. The raw strip is first skinned to eliminate the edge wave defect and produce the C warping defect, and then the straightening is performed to eliminate the C warping defect. The entire production process is stable, and the thin-gauge zinc-iron alloyed high-strength steel has no C warping and edge wave defects, and the surface quality is good.

[0091] Based on the same application concept, the embodiment of the present application also provides a plate shape adjustment device for thin-gauge coated high-strength steel. Figure 3 : is a structural block diagram of a plate shape adjustment device for thin-gauge coated high-strength steel provided in an embodiment of the present application, such as Figure 3 As shown, the device 300 includes an acquisition module 301 , a first adjustment module 302 , and a second adjustment module 303 .

[0092] An acquisition module 301 is used to obtain the thickness and width of thin-gauge coated 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 skin-pass mill to corresponding target values, and adjust the support roll profile curve to the target curve during skin-passing of thin-gauge coated high-strength steel; and then adjust the skin-passing elongation of the skin-pass mill to between 0.9% and 0.1%, and adjust the bending roll force of the skin-pass mill to between 600 and 1000 KN according to the thickness and width;

[0094] The second adjustment module 303 is used to feed the thin-gauge coated high-strength steel after finishing into the straightening machine for straightening, and adjust the insertion amount of the bending roller group of the straightening machine to 0; then adjust the insertion amount of the straightening roller group of the straightening machine to between 20-30mm according to the thickness and width, and adjust the straightening elongation to between 0.05-0.1%.

[0095] Optionally, the target value of the working roll diameter of the skin-finishing mill is 400-450 mm, the target value of the working roll length is 2100 mm, and the target value of the working roll crown is between 0.08-0.12 mm.

[0096] Optionally, the target value of the support roller diameter of the skin-pass mill is 900-950 mm and the target value of the support roller length is 2050 mm, and the target curve of the support roller profile is:

[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] Among them, y represents the radial coordinate of the support roller, and x represents the axial coordinate of the support roller.

[0099] Optionally, the first adjustment module 302 is further configured to:

[0100] According to the thickness and width, the corresponding target skin-pass elongation and target skin-pass mill bending force are obtained by looking up the table;

[0101] Adjusting the skin-pass elongation of the skin-pass mill to the target skin-pass elongation and adjusting the bending roll force of the skin-pass mill to the target bending roll force of the skin-pass mill;

[0102] Among them, the target skin-finishing elongation is between 0.9-0.1%, and the target skin-finishing machine bending roll force is between 600-1000KN.

[0103] Optionally, the second adjustment module 303 is further used for:

[0104] According to the thickness and width, the corresponding target insertion amount and the corresponding target straightening elongation are obtained by looking up the table;

[0105] 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;

[0106] Among them, the target insertion amount is between 20-30 mm, and the target tensile elongation is between 0.05-0.1%.

[0107] Optionally, before the skin-finished thin-gauge coated high-strength steel is fed into the tension and leveling machine for tension and leveling, the device 300 further 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 supporting roll diameter of the straightening roll group to 240-250mm.

[0109] Optionally, the device 300 further includes a control module, configured to:

[0110] During the skin pass of thin-gauge coated high-strength steel, the roughness fluctuation range of the working roll of the skin pass mill is controlled to be less than 10%.

[0111] It can be understood that the device provided in the above embodiment 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] An embodiment of the present application also provides an electronic device, which may include a processor and a memory, wherein the processor and the memory may be communicatively connected to each other via a bus or other means.

[0113] The processor may be a central processing unit (CPU) or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0114] The memory may include a large capacity memory for data or instructions. By way of example and not limitation, the memory may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. Where appropriate, the memory may include a removable or non-removable (or fixed) medium. Where appropriate, the memory may be inside or outside the electronic device. In a particular embodiment, the memory may be a non-volatile solid-state memory.

[0115] In one example, the memory may be a read-only memory (ROM). In one example, 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 a flash memory, or a combination of two or more of these.

[0116] The processor implements any one of the plate shape adjustment methods for thin-gauge coated high-strength steel in the above embodiments by reading and executing computer program instructions stored in the memory.

[0117] In one example, the electronic device may further include a communication interface and a bus. Among them, the processor, memory, and communication interface are connected through a bus and communicate with each other. The communication interface is mainly used to realize the communication between the modules, devices, units and / or devices in the embodiment of the present application. Where appropriate, the bus may include one or more buses.

[0118] In addition, in combination with the plate shape adjustment method of thin-gauge plated high-strength steel in the above embodiments, the present application embodiment can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the plate shape adjustment methods of thin-gauge plated high-strength steel in the above embodiments is implemented.

[0119] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0120] The embodiments of the present application provide a plate shape adjustment method, device, equipment and medium for thin-gauge coated high-strength steel, which can obtain the thickness and width of thin-gauge coated high-strength steel; during the skin-finishing of 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 skin-finishing machine are adjusted to corresponding target values, and the support roll profile curve is adjusted to the target curve; then, according to the thickness and width, the skin-finishing elongation and the skin-finishing machine bending roll force are adjusted to corresponding target values, the target value of the skin-finishing elongation is between 0.9-0.1%, and the target value of the skin-finishing machine bending roll force is between 600-1000KN, so that the thin-gauge coated high-strength steel During the skin pass, try not to produce edge wave defects, and only produce C-warping defects; when the thin-gauge coated high-strength steel after skin pass is sent to the drawing and straightening machine for drawing and straightening, the insertion amount of the bending roller group of the drawing and straightening machine is adjusted to 0; then, according to the thickness and width, the insertion amount of the straightening roller group of the drawing and straightening machine is adjusted to the target insertion amount and the drawing and straightening elongation is adjusted to the target drawing and straightening elongation. The target insertion amount is between 20-30mm, and the target drawing and straightening 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 drawing and straightening machine concentrates the drawing and straightening capacity on eliminating C-warping defects. This method can greatly reduce the plate shape problems of C-warping and edge wave of thin-gauge coated high-strength steel and improve its surface quality.

[0121] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0122] Similarly, it should be understood that in order to streamline the present disclosure and help understand one or more of the various application aspects, in the above description of the exemplary embodiments of the present application, the various features of the present application are sometimes grouped together into a single embodiment, figure, or description thereof. However, the disclosed method should not be interpreted as reflecting the following intention: the claimed application requires more features than the features clearly stated in each claim. More specifically, as reflected in the claims below, the application aspects are less than all the features of the single embodiment disclosed above. Therefore, the claims following the specific embodiment are hereby expressly incorporated into the specific embodiment, wherein each claim itself serves as a separate embodiment of the present application.

[0123] It should be noted that the above embodiments illustrate the present application rather than limit the present application, and that those skilled in the art may design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets should not be constructed as a limitation to the claims. The word "comprising" does not exclude the presence of components or steps not listed in the claims. The word "one" or "an" preceding a component does not exclude the presence of multiple such components. The present application may be implemented with the aid of hardware including several different components and with the aid of a suitably programmed computer. In a unit claim that lists several devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc. does not indicate any order. These words may be interpreted as names.

Claims

1. A method for adjusting the plate shape of thin-gauge coated high-strength steel, characterized in that: The method comprises: Obtain thickness and width of thin gauge coated high strength steel; During the skin pass 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 skin pass mill are adjusted to corresponding target values, and the support roll profile curve is adjusted to the target curve; then, according to the thickness and the width, the skin pass elongation of the skin pass mill is adjusted to between 0.9-0.1%, and the bending roll force of the skin pass mill is adjusted to between 600-1000KN; When the smoothed thin-gauge coated high-strength steel is fed into a straightening machine for straightening, the insertion amount of the bending roller set of the straightening machine is adjusted to 0; then, according to the thickness and the width, the insertion amount of the straightening roller set of the straightening machine is adjusted to between 20-30 mm, and the straightening elongation is adjusted to between 0.05-0.1%.

2. The method for adjusting the plate shape of thin-gauge coated high-strength steel according to claim 1, characterized in that: The target value of the working roll diameter of the skin-finishing mill is 400-450 mm, the target value of the working roll length is 2100 mm, and the target value of the working roll crown is between 0.08-0.12 mm.

3. The method for adjusting the plate shape of thin-gauge coated high-strength steel according to claim 1, characterized in that: The target value of the support roller diameter of the skin-pass mill is 900-950 mm and the target value of the support roller length is 2050 mm. The target curve of the support roller profile curve is: 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; Wherein, y represents the radial coordinate of the support roller, and x represents the axial coordinate of the support roller.

4. The method for adjusting the plate shape of thin-gauge coated high-strength steel according to claim 1, characterized in that: According to the thickness and the width, the skin pass elongation of the skin pass machine is adjusted between 0.9-0.1%, and the bending roll force of the skin pass machine is adjusted between 600-1000KN, including: According to the thickness and the width, a table is consulted to obtain a corresponding target skin-pass elongation and a target skin-pass mill bending roll force; Adjusting the skin-pass elongation of the skin-pass mill to the target skin-pass elongation and adjusting the skin-pass mill bending roll force to the target skin-pass mill bending roll force; Wherein, the target skin-finishing elongation is between 0.9% and 0.1%, and the target skin-finishing machine bending roll force is between 600 and 1000 KN.

5. The method for adjusting the plate shape of thin-gauge coated high-strength steel according to claim 1, characterized in that: According to the thickness and the width, the insertion amount of the straightening roller set of the tension leveler is adjusted between 20-30 mm, and the tension leveling elongation is adjusted between 0.05-0.1%, including: According to the thickness and the width, a table is looked up to obtain a corresponding target insertion amount and a corresponding target tensile straightening elongation; Adjusting the insertion amount of the straightening roller set of the straightening machine to the target insertion amount and the straightening elongation to the target straightening elongation; Wherein, the target insertion amount is between 20-30 mm, and the target tensile straightening elongation is between 0.05-0.1%.

6. The method for adjusting the plate shape of thin-gauge coated high-strength steel according to claim 1, characterized in that: Before feeding the skin-finished thin-gauge coated high-strength steel into the tension and straightening machine for tension and straightening, the method further comprises: The diameter of the working rolls of the straightening roll group is adjusted to 70-80 mm, the diameter of the working rolls of the bending roll group is adjusted to 70-80 mm, and the diameter of the supporting rolls of the straightening roll group is adjusted to 240-250 mm.

7. The method for adjusting the plate shape of thin-gauge coated high-strength steel according to claim 1, characterized in that: The method further comprises: During the skin-passing of the thin-gauge coated high-strength steel, the roughness fluctuation range of the working roll body of the skin-passing mill is controlled to be less than 10%.

8. A plate shape adjustment device for thin-gauge coated high-strength steel, characterized in that: The device comprises: Acquisition module for acquiring the thickness and width of thin-gauge 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 skin-pass mill to corresponding target values ​​during skin-passing of the thin-gauge coated high-strength steel, and adjust the support roll profile curve to the target curve; and then adjust the skin-pass elongation of the skin-pass mill to between 0.9% and 0.1%, and adjust the bending roll force of the skin-pass mill to between 600 and 1000 KN according to the thickness and the width; The second adjustment module is used to feed the thin-gauge coated high-strength steel after finishing into the straightening machine for straightening, and adjust the insertion amount of the bending roller group of the straightening machine 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%.

9. An electronic device, characterized in that: include: A memory and a processor, wherein the memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the method according to any one of claims 1 to 7 by executing the computer instructions.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to cause the computer to execute the method according to any one of claims 1 to 7.

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