Method for measuring anisotropy of welding deformation surface of uncoiling shear plate

Abstract

The invention discloses a method for measuring the anisotropy of a welding deformation surface of an uncoiling shear plate, and the method comprises the steps: obtaining a first test plate and a second test plate, carrying out the welding operation of the first test plate and the second test plate, and obtaining a first welded plate and a second welded plate; determining a first welding deformation amount of the first welded plate and a second welding deformation amount of the second welded plate; determining a welding deformation surface different deviation value and a welding process deformation value based on the first welding deformation amount and the second welding deformation amount; and determining a welding deformation surface difference coefficient based on the welding deformation surface difference deviation value and the welding process deformation value, and judging the welding deformation surface difference of the uncoiling shear plate through the welding deformation surface difference coefficient. Through the technical scheme provided by the invention, the accuracy of the welding deformation surface anisotropy test of the uncoiling shear plate can be improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of performance detection of uncoiled shear plates, and in particular, relates to a method for measuring the anisotropy of the welding deformation surface of an uncoiled shear plate. Background Art

[0002] Since the production process of the uncoiling shear plate includes the uncoiling process of the steel coil under room temperature conditions, one side of the uncoiling shear plate is stretched (i.e., the inner side of the coil) when the original coil is uncoiling, and the other side is compressed (i.e., the outer side of the coil) when the original coil is uncoiling, so that the plastic deformation rates of the outer side of the coil and the inner side of the coil after uncoiling are different, resulting in different deformation amounts on the two sides of the uncoiling shear plate during welding. Since it is impossible to accurately quantify the welding deformation amounts on the two sides of the uncoiling shear plate, it will affect the control of welding deformation. Therefore, it is necessary to determine the difference between the deformation amounts on the inner side of the coil and the deformation amounts on the outer side of the coil, and quantify and measure them to improve the control of welding deformation. Among them, the property used to quantify the difference between the deformation amounts on the two sides of the uncoiling shear plate is the welding deformation surface anisotropy of the uncoiling shear plate. Based on this, how to improve the accuracy of the welding deformation surface anisotropy test of the uncoiling shear plate is a technical problem that needs to be solved urgently. Summary of the invention

[0003] The embodiment of the present application provides a method for measuring the welding deformation surface anisotropy of an uncoiled shear plate, thereby improving the accuracy of the welding deformation surface anisotropy test of the uncoiled shear plate.

[0004] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0005] According to a first aspect of an embodiment of the present application, a method for measuring the welding deformation surface anisotropy of an uncoiled shear plate is provided, characterized in that the method includes: obtaining a first test plate and a second test plate, and performing welding operations on the first test plate and the second test plate respectively to obtain a first welded plate and a second welded plate; determining a first welding deformation of the first welded plate and a second welding deformation of the second welded plate; determining a welding deformation surface anisotropy deviation value and a welding process deformation value based on the first welding deformation and the second welding deformation; determining a welding deformation surface anisotropy coefficient based on the welding deformation surface anisotropy deviation value and the welding process deformation value, and determining the welding deformation surface anisotropy of the uncoiled shear plate by the welding deformation surface anisotropy coefficient.

[0006] In some embodiments of the present application, based on the aforementioned scheme, obtaining the first test board and the second test board includes: cutting the first test board and the second test board on the uncoiling shear board, wherein the distance between the position where the first test board is cut and the position where the second test board is cut on the uncoiling shear board is less than a preset distance.

[0007] In some embodiments of the present application, based on the aforementioned scheme, the cutting specifications of the first test plate and the second test plate are 150mm to 200mm in width, 300mm to 450mm in length, an aspect ratio of 2 to 3, a width-to-thickness ratio of 20 to 50, and the length direction is the rolling direction of the uncoiled shear plate.

[0008] In some embodiments of the present application, based on the aforementioned scheme, the first test plate and the second test plate are respectively welded to obtain a first welded plate and a second welded plate, including: performing a welding operation on the inner surface of the roll of the first test plate according to a preset welding process to obtain the first welded plate, and performing a welding operation on the outer surface of the roll of the second test plate according to a preset welding process to obtain the second welded plate, wherein the inner surface of the roll refers to a side of the uncoiled shear plate that is stretched when the original roll is opened, and the outer surface of the roll refers to a side of the uncoiled shear plate that is compressed when the original roll is opened; or, performing a welding operation on the outer surface of the roll of the first test plate according to a preset welding process to obtain the first welded plate, and performing a welding operation on the inner surface of the roll of the second test plate according to a preset welding process to obtain the second welded plate.

[0009] In some embodiments of the present application, based on the aforementioned scheme, the preset welding process includes: using submerged arc welding to perform welding operations in the middle of the width of the test plate in a direction parallel to the rolling direction of the test plate, wherein the penetration depth of the weld is 0.45 to 0.55 of the thickness of the test plate.

[0010] In some embodiments of the present application, the welding deformation surface deviation value and the welding process deformation value are determined by the following formula based on the above scheme:

[0011] Z0=(Z1+Z2) / 2

[0012] Z=(Z1-Z2) / 2

[0013] Among them, Z0 represents the welding deformation surface deviation value, Z represents the welding process deformation value, Z1 represents the first welding deformation amount, and Z2 represents the second welding deformation amount.

[0014] In some embodiments of the present application, based on the above scheme, the welding deformation area difference coefficient is determined by the following formula:

[0015]

[0016] Among them, Z0 represents the welding deformation surface deviation value, Z represents the welding process deformation value, and K represents the welding deformation surface coefficient.

[0017] In some embodiments of the present application, based on the aforementioned scheme, determining the welding deformation surface anisotropy of the uncoiled shear plate by the welding deformation surface anisotropy coefficient includes: if the welding deformation surface anisotropy coefficient is larger, it is determined that the welding deformation surface anisotropy of the uncoiled shear plate is stronger.

[0018] In some embodiments of the present application, based on the above-mentioned solution, the stronger the welding deformation surface anisotropy of the uncoiled shear plate is, the worse the welding performance of the uncoiled shear plate is.

[0019] In some embodiments of the present application, based on the aforementioned scheme, the method also includes: comparing the absolute value of the welding deformation surface deviation value and the absolute value of the welding process deformation value; if the absolute value of the welding deformation surface deviation value is greater than the absolute value of the welding process deformation value, then it is determined that the welding deformation surface anisotropy is the main factor affecting the welding deformation of the uncoiled shear plate; if the absolute value of the welding deformation surface deviation value is less than the absolute value of the welding process deformation value, then it is determined that the welding process is the main factor affecting the welding deformation of the uncoiled shear plate.

[0020] Based on the technical solution proposed in the present application, by obtaining the first welding deformation amount and the second welding deformation amount, the welding deformation surface difference deviation value and the welding process deformation value are determined, so that the welding deformation surface difference coefficient can be determined by the welding deformation surface difference deviation value and the welding process deformation value, and the welding deformation surface anisotropy of the uncoiled shear plate is determined by the welding deformation surface difference coefficient. The welding deformation surface anisotropy is quantified, which can more intuitively reflect the welding deformation degree of the uncoiled shear plate and the unevenness of the welding deformation of the uncoiled shear plate, and can also provide more accurate data support for optimizing the welding process conditions, and then the parameters of the welding process can be adjusted according to the measurement results, the welding deformation can be reduced, and the product quality can be improved. In addition, by quantifying the welding deformation surface difference deviation value and the welding process deformation value, the accuracy of the welding deformation surface anisotropy measurement of the uncoiled shear plate can also be improved.

[0021] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 A flow chart showing a method for measuring the welding deformation anisotropy of an uncoiled shear plate in one embodiment of the present application is shown;

[0024] Figure 2 A schematic diagram of the deformation after welding in one embodiment of the present application is shown;

[0025] Figure 3 A top view of a plate after welding in one embodiment of the present application is shown. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0028] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0029] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0030] It should also be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those shown or described.

[0031] In order to enable those skilled in the art to better understand the present application, the uncoiled shear plate and its welding deformation surface anisotropy proposed in the present application will first be briefly described.

[0032] Since the production process of the uncoiling shear plate includes the uncoiling process of the steel coil under room temperature conditions, one side of the uncoiling shear plate is stretched (i.e., the inner side of the coil) when the original coil is uncoiling, and the other side is compressed (i.e., the outer side of the coil) when the original coil is uncoiling, so that the plastic deformation rates of the outer side of the coil and the inner side of the coil after uncoiling are different, resulting in different deformation amounts on the two sides of the uncoiling shear plate during welding. Since it is impossible to accurately quantify the welding deformation amounts on the two sides of the uncoiling shear plate, it will affect the control of welding deformation. Therefore, it is necessary to determine the difference between the deformation amounts on the inner side of the coil and the deformation amounts on the outer side of the coil, and quantify and measure them to improve the control of welding deformation. Among them, the property used to quantify the difference between the deformation amounts on the two sides of the uncoiling shear plate is the welding deformation surface anisotropy of the uncoiling shear plate. Based on this, how to improve the accuracy of the welding deformation surface anisotropy test of the uncoiling shear plate is a technical problem that needs to be solved urgently.

[0033] To solve this problem, the inventors of the present application proposed the concept of welding deformation surface anisotropy, which is used to quantify the difference in deformation generated on the two sides of the uncoiled shear plate during the welding process, and proposed a method for measuring the welding deformation surface anisotropy of the uncoiled shear plate to improve the accuracy of measuring the welding deformation surface anisotropy of the uncoiled shear plate.

[0034] Next, we will combine Figure 1 The method for measuring the welding deformation surface anisotropy of the uncoiled shear plate proposed in this application is described in detail.

[0035] See also Figure 1 , shows a flow chart of a method for measuring the welding deformation surface anisotropy of an uncoiled shear plate in one embodiment of the present application, such as Figure 1 As shown, the method may at least include the following steps 110 to 140:

[0036] Step 110, obtaining a first test plate and a second test plate, and performing welding operations on the first test plate and the second test plate respectively to obtain a first welded plate and a second welded plate.

[0037] Step 120, determining a first welding deformation of the first welded plate and a second welding deformation of the second welded plate.

[0038] Step 130: determining a welding deformation surface deviation value and a welding process deformation value based on the first welding deformation amount and the second welding deformation amount.

[0039] Step 140: determining a welding deformation surface anisotropy coefficient based on the welding deformation surface anisotropy deviation value and the welding process deformation value, and determining the welding deformation surface anisotropy of the uncoiled shear plate by using the welding deformation surface anisotropy coefficient.

[0040] In this application, please combine Figure 2 , shows a schematic diagram of the deformation after welding in one embodiment of the present application, such as Figure 2 As shown in the figure, the welded plate bulges toward the outside of the roll after the welding test, and the post-weld deformation is the distance between the highest part of the bulge and the horizontal position of the welded plate, excluding the Figure 2 In addition to the situation shown, the welded plate will also be concave toward the inner surface of the roll after the welding test. At this time, the post-weld deformation is the distance between the lowest part of the concave plate and the horizontal position.

[0041] In the present application, it should be noted that the welding deformation amount caused by the welded plate bulging toward the outside of the roll after the welding test is opposite in sign to the welding deformation amount caused by the welded plate being recessed toward the inside of the roll after the welding test, that is, if one of the deformation amounts is marked as positive, the other is marked as negative, so as to facilitate subsequent data processing and improve the accuracy of the data processing process.

[0042] In the present application, the first welding deformation amount and the second welding deformation amount are obtained to determine the welding deformation surface difference deviation value and the welding process deformation value, so that the welding deformation surface difference coefficient can be determined by the welding deformation surface difference deviation value and the welding process deformation value, and the welding deformation surface anisotropy of the uncoiled shear plate can be determined by the welding deformation surface difference coefficient. Quantifying the welding deformation surface anisotropy can more intuitively reflect the welding deformation degree of the uncoiled shear plate and the unevenness of the welding deformation of the uncoiled shear plate, and can also provide more accurate data support for the optimization of welding process conditions, and then the welding process parameters can be adjusted according to the measurement results, the welding deformation can be reduced, and the product quality can be improved. In addition, by quantifying the welding deformation surface difference deviation value and the welding process deformation value, the accuracy of the welding deformation surface anisotropy measurement of the uncoiled shear plate can also be improved.

[0043] In the above step 110, the obtaining of the first test board and the second test board may be specifically performed according to the following step 111:

[0044] Step 111 , cutting a first test board and a second test board on the uncoiling shearing plate, wherein a distance between a position where the first test board is cut and a position where the second test board is cut on the uncoiling shearing plate is smaller than a preset distance.

[0045] In the present application, the cutting specifications of the first test plate and the second test plate are 150mm~200mm in width, 300mm~450mm in length, aspect ratio of 2~3, width-to-thickness ratio of 20~50, and the length direction is the rolling direction of the uncoiled shear plate. Specifically, it can be a test plate with a width of 160mm and a length of 400mm, or a test plate with a width of 175mm and a length of 350mm, or a test plate with a width of 150mm and a length of 450mm. This application does not make any specific limitation on this.

[0046] In the present application, by limiting the cut-off specifications of the first test plate and the second test plate, the influence of the test plate's own weight on the welding deformation can be reduced, and the height change of the welding nozzle of the test plate after the welding deformation will not be too large to affect the stability of the welding. At the same time, the thermal conductivity and rigidity of the test plate with a width of 150mm to 200mm are more suitable, the degree of welding deformation can be observed more conveniently, and the difficulty of measuring the welding deformation is relatively low.

[0047] In the present application, the preset spacing may be 15 mm, 10 mm, or 20 mm, and the present application does not make any specific limitation on this.

[0048] In the present application, by limiting the threshold of the minimum spacing between the interception position of the first test plate and the interception position of the second test plate, the correlation between the first test plate and the second test plate can be effectively ensured, and it can be determined that the internal stress and plastic deformation of the first test plate and the second test plate are basically the same, that is, the welding deformation surface anisotropy of the first test plate and the second test plate is basically the same. In this way, welding operations can be performed on the first test plate and the second test plate respectively to determine the welding deformation amount, thereby improving the accuracy of the measurement of the welding deformation surface anisotropy of the uncoiled shear plate.

[0049] In the above step 110, the first test plate and the second test plate are respectively welded to obtain a first welded plate and a second welded plate, which can be specifically performed according to any one of the following steps 112 or 113:

[0050] Step 112, according to a preset welding process, welding operation is performed on the inner surface of the first test plate to obtain a first welded plate, and according to a preset welding process, welding operation is performed on the outer surface of the second test plate to obtain a second welded plate, the inner surface of the coil refers to the side of the uncoiled shear plate that is stretched when the original coil is uncoiled, and the outer surface of the coil refers to the side of the uncoiled shear plate that is compressed when the original coil is uncoiled.

[0051] Step 113, welding the outer surface of the first test plate according to a preset welding process to obtain a first welded plate, and welding the inner surface of the second test plate according to a preset welding process to obtain a second welded plate.

[0052] In the present application, the preset welding process can specifically be a submerged arc welding surfacing welding method, in which the welding operation is performed in the middle of the plate width of the test plate in a direction parallel to the rolling direction of the test plate, wherein the penetration depth of the weld is 0.45 to 0.55 of the plate thickness of the test plate. According to actual needs, the preset welding process can also be reasonably adjusted. For details, please refer to Figure 3 , shows a top view of a plate after welding in one embodiment of the present application, as shown in Figure 3 As shown, the test plate can be fixed by two iron blocks to prevent displacement during welding, and the weld is located in the middle of the plate width of the test plate.

[0053] In the present application, by performing welding operations on the first test plate and the second test plate respectively, the welding deformation on the inner surface and the outer surface of the coil can be determined respectively, which can effectively improve the accuracy of the welding deformation measurement, and thus improve the accuracy of subsequent data processing. In addition, by performing welding operations on the first test plate and the second test plate with the same preset welding process, the consistency of data acquisition conditions can be ensured, avoiding differences in welding deformation due to the process, further improving the accuracy of data processing, and thus improving the accuracy of the measurement of the welding deformation surface anisotropy of the uncoiled shear plate.

[0054] In the above step 130, the welding deformation surface deviation value and the welding process deformation value can be determined respectively by the following formula (1) and formula (2):

[0055] Z0=(Z1+Z2) / 2 (1)

[0056] Z=(Z1-Z2) / 2 (2)

[0057] Among them, Z0 represents the welding deformation surface deviation value, Z represents the welding process deformation value, Z1 represents the first welding deformation amount, and Z2 represents the second welding deformation amount.

[0058] In the present application, the welding deformation on the inner and outer surfaces of the uncoiled shear plate are combined to determine the welding deformation surface deviation value and the welding process deformation value, wherein the welding deformation surface deviation can represent the difference in welding deformation of the uncoiled shear plate caused by different welding surfaces, and the welding process deformation value can represent the welding deformation of the uncoiled shear plate caused by the welding process.

[0059] In the above step 140, the welding deformation coefficient can be determined specifically by the following formula (3):

[0060]

[0061] Among them, Z0 represents the welding deformation surface deviation value, Z represents the welding process deformation value, and K represents the welding deformation surface coefficient.

[0062] In the present application, the welding deformation surface anisotropy coefficient is obtained by comprehensively considering the welding deformation surface anisotropy deviation value and the welding process deformation value, and the welding deformation surface anisotropy coefficient is used to characterize the welding deformation surface anisotropy of the uncoiled shear plate, which can effectively improve the accuracy of the welding deformation surface anisotropy measurement.

[0063] In the above step 140, the welding deformation surface anisotropy of the uncoiled shear plate is determined by the welding deformation surface anisotropy coefficient, which can be specifically performed by the following step 141:

[0064] Step 141: If the welding deformation surface anisotropy coefficient is larger, it is determined that the welding deformation surface anisotropy of the uncoiled shear plate is stronger.

[0065] In the present application, the welding performance of the uncoiled shear plate can be judged by the strength of the welding deformation surface anisotropy of the uncoiled shear plate, thereby providing a basis for adjusting the welding process and controlling the welding deformation.

[0066] In the present application, the welding deformation surface anisotropy of the uncoiled shear plate is judged by the welding deformation surface anisotropy coefficient, thereby realizing the quantitative characterization of the welding deformation surface anisotropy. The difference in welding deformation between the inner surface and the outer surface of the uncoiled shear plate can be intuitively judged, thereby providing data support for adjusting the welding process and controlling the welding deformation.

[0067] Based on the method for measuring the welding deformation surface anisotropy of the uncoiled shear plate proposed in the present application, the method may further perform the following steps 150 to 170:

[0068] Step 150, comparing the absolute value of the welding deformation surface deviation value and the absolute value of the welding process deformation value.

[0069] Step 160: If the absolute value of the welding deformation surface anisotropy deviation value is greater than the absolute value of the welding process deformation value, it is determined that the welding deformation surface anisotropy is the main factor affecting the uncoiled shear plate welding deformation.

[0070] Step 170: If the absolute value of the welding deformation surface deviation value is smaller than the absolute value of the welding process deformation value, it is determined that the welding process is the main factor affecting the uncoiled shear plate welding deformation.

[0071] In the present application, by comparing the absolute value of the welding deformation surface deviation value and the absolute value of the welding process deformation value, the main factors affecting the welding deformation of the uncoiled shear plate can be determined, thereby providing support for adjusting the welding process and controlling the welding deformation.

[0072] Next, the method for measuring the welding deformation anisotropy of the uncoiled shear plate proposed in the present application will be described in conjunction with a specific embodiment.

[0073] Two steel plates are cut from a Q235 steel coil or an AH36 steel coil, which are used as a first test plate and a second test plate respectively, and the interval distance between the cutting position of the first test plate and the cutting position of the second test plate is 15 mm.

[0074]

[0075] Table 1 Chemical composition (wt%) and strength of steel materials

[0076]

[0077]

[0078] Table 2 Test plate dimensions and welding process conditions in each embodiment

[0079]

[0080] Table 3 Results Statistics

[0081] As shown in Table 2, five groups of embodiments of uncoiled shear plates (plate group numbers are 1-5), one group of hot-rolled flat plate comparative examples (Comparative Example 1), and one group of uncoiled shear plates with a width-to-thickness ratio greater than the cut specification comparative examples (Comparative Example 2) are selected, and the measurement method of the welding deformation surface anisotropy of the uncoiled shear plates proposed in the present application is implemented respectively. The results are shown in Table 3. From the data in the table, it can be concluded that the welding deformation degrees of the inner and outer surfaces of the coils of the five groups of embodiments are all different, wherein the welding deformation surface anisotropy coefficients of the five groups of embodiments are 0.43, 0.13, 0.33, 0.33 and 0.2, respectively. It can be concluded that the welding deformation surface anisotropy coefficient of the second group of embodiments is smaller, that is, the weaker the welding deformation surface anisotropy, the better the welding performance.

[0082] For Comparative Example 1, which is a hot-rolled flat plate comparative example, it can be concluded from Table 3 that the welding deformation degree generated on both sides of the hot-rolled flat plate is the same, and there is no welding deformation surface anisotropy. For Comparative Example 2, since the width-to-thickness ratio of the test plate in this comparative example is greater than the cutting specification, the welding deformation generated by the test plate is difficult to measure and is not suitable as a valid conclusion.

[0083] Based on the technical solution proposed in the present application, by obtaining the first welding deformation amount and the second welding deformation amount, the welding deformation surface deviation value and the welding process deformation value are determined, so that the welding deformation surface coefficient can be determined by the welding deformation surface deviation value and the welding process deformation value, and the welding deformation surface anisotropy of the uncoiled shear plate is determined by the welding deformation surface coefficient. The welding deformation surface anisotropy is quantified, which can more intuitively reflect the welding deformation degree of the uncoiled shear plate and the unevenness of the welding deformation of the uncoiled shear plate, and can also provide more accurate data support for the optimization of welding process conditions, and then the parameters of the welding process can be adjusted according to the measurement results, the welding deformation can be reduced, and the product quality can be improved. In addition, by quantifying the welding deformation surface deviation value and the welding process deformation value, the accuracy of the welding deformation surface anisotropy measurement of the uncoiled shear plate can also be improved.

[0084] The above description is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A method for measuring the welding deformation surface anisotropy of an uncoiled shear plate, characterized in that: The method comprises: Obtaining a first test plate and a second test plate, and performing welding operations on the first test plate and the second test plate respectively to obtain a first welded plate and a second welded plate; Determining a first welding deformation of the first welded plate and a second welding deformation of the second welded plate; Determine a welding deformation surface deviation value and a welding process deformation value based on the first welding deformation amount and the second welding deformation amount; The welding deformation surface anisotropy coefficient is determined based on the welding deformation surface anisotropy deviation value and the welding process deformation value, and the welding deformation surface anisotropy of the uncoiled shear plate is determined by the welding deformation surface anisotropy coefficient.

2. The method according to claim 1, characterized in that: The obtaining of the first test board and the second test board comprises: A first test board and a second test board are cut on the uncoiling shearing plate, wherein a distance between a position where the first test board is cut and a position where the second test board is cut on the uncoiling shearing plate is smaller than a preset distance.

3. The method according to claim 2, characterized in that The cutting specifications of the first test plate and the second test plate are 150mm-200mm in width, 300mm-450mm in length, aspect ratio of 2-3, width-thickness ratio of 20-50, and the length direction is the rolling direction of the uncoiled shear plate.

4. The method according to claim 1, characterized in that: The first test plate and the second test plate are respectively welded to obtain a first welded plate and a second welded plate, comprising: According to a preset welding process, a welding operation is performed on the inner surface of the first test plate to obtain a first welded plate, and according to a preset welding process, a welding operation is performed on the outer surface of the second test plate to obtain a second welded plate, wherein the inner surface of the coil refers to a side of the uncoiled shear plate that is stretched when the original coil is uncoiled, and the outer surface of the coil refers to a side of the uncoiled shear plate that is compressed when the original coil is uncoiled; or, According to a preset welding process, a welding operation is performed on the outer surface of the first test plate to obtain a first welded plate, and according to a preset welding process, a welding operation is performed on the inner surface of the second test plate to obtain a second welded plate.

5. The method according to claim 4, characterized in that The preset welding process includes: The submerged arc welding surfacing welding method is adopted, and the welding operation is performed in the middle position of the plate width of the test plate in a direction parallel to the rolling direction of the test plate, wherein the penetration depth of the weld is 0.45 to 0.55 of the plate thickness of the test plate.

6. The method according to claim 1, characterized in that The welding deformation surface deviation value and the welding process deformation value are determined by the following formula: Z0=(Z1+Z2) / 2 Z=(Z1-Z2) / 2 Among them, Z0 represents the welding deformation surface deviation value, Z represents the welding process deformation value, Z1 represents the first welding deformation amount, and Z2 represents the second welding deformation amount.

7. The method according to claim 1, characterized in that The welding deformation coefficient is determined by the following formula: Among them, Z0 represents the welding deformation surface deviation value, Z represents the welding process deformation value, and K represents the welding deformation surface coefficient.

8. The method according to claim 1, characterized in that The step of determining the welding deformation surface anisotropy of the uncoiled shear plate by using the welding deformation surface anisotropy coefficient comprises: If the welding deformation surface anisotropy coefficient is larger, it is determined that the welding deformation surface anisotropy of the uncoiled shear plate is stronger.

9. The method according to claim 8, characterized in that The stronger the welding deformation surface anisotropy of the uncoiled shear plate is, the worse the welding performance of the uncoiled shear plate is.

10. The method according to claim 1, characterized in that The method further comprises: Compare the absolute value of the welding deformation surface deviation value and the absolute value of the welding process deformation value; If the absolute value of the welding deformation surface anisotropy deviation value is greater than the absolute value of the welding process deformation value, it is determined that the welding deformation surface anisotropy is the main factor affecting the welding deformation of the uncoiled shear plate; If the absolute value of the welding deformation surface deviation value is smaller than the absolute value of the welding process deformation value, it is determined that the welding process is the main factor affecting the welding deformation of the uncoiled shear plate.

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