Method and device for determining wedge degree of strip steel, equipment, medium and program product

Abstract

The invention provides a method, device and equipment for determining the wedge degree of strip steel, a medium and a program product, and relates to the technical field of steel rolling. The method comprises the following steps: acquiring a plurality of initial values of different positions of a strip steel cross section; each initial value comprises the strip steel width and the strip steel thickness of the corresponding position; determining a fitting thickness function of the cross section of the strip steel based on the plurality of initial values; and determining the wedge degree of the strip steel based on the fitting thickness function. According to the method and device for determining the wedge degree of the strip steel, the equipment, the medium and the program product, the thickness values of multiple positions in the width direction of the strip steel can be fully utilized, the wedge degree of the strip steel is represented by fitting the wedge degree of the thickness function, and the wedge degree of the strip steel can be reflected more accurately.

Description

Technical Field

[0001] The present application relates to the technical field of steel rolling, and in particular to a method, device, equipment, medium and program product for determining the wedge degree of a steel strip. Background Art

[0002] The cross-sectional profile is one of the important indicators for evaluating the strip shape quality. Among them, the parameter that describes the symmetry of the cross-sectional profile of the strip is called wedge. In engineering practice, the difference in thickness between two characteristic positions at a certain distance from the left and right sides of the strip is usually selected as the wedge value to indicate the wedge degree of the strip. Under ideal conditions, the smaller the wedge value, the more symmetrical the strip is and the smaller the wedge degree of the strip is; the larger the wedge value, the more asymmetrical the strip is and the smaller the wedge degree of the strip is. Figure 1 It is a schematic diagram of an ideal cross-sectional profile curve of a steel strip provided in the background technology of this application.

[0003] In the actual production process, the strip profile morphology varies, especially for the case of abnormal edge profile. Figure 2 The wedge value obtained by the above method has limited accuracy and cannot reflect the actual symmetry of the profile. It may even give an erroneous evaluation and mislead the subsequent production process. Summary of the invention

[0004] The present application provides a method, device, equipment, medium and program product for determining the wedge-shaped degree of a steel strip, so as to solve the defect of limited accuracy of the wedge-shaped degree of a steel strip determined in the prior art, and can more accurately reflect the wedge-shaped degree of the steel strip.

[0005] In a first aspect, the present application provides a method for determining the wedge degree of a steel strip, comprising:

[0006] Acquire multiple initial values ​​at different positions of the strip cross section; each initial value includes the strip width and strip thickness at the corresponding position;

[0007] Determining a fitting thickness function of a cross section of the steel strip based on the multiple initial values;

[0008] Based on the fitted thickness function, the degree of strip wedge shape is determined.

[0009] Optionally, determining a fitting thickness function of a cross section of the steel strip based on the multiple initial values ​​comprises:

[0010] Based on the multiple initial values, establishing an initial cross-sectional profile scatter plot;

[0011] Eliminating invalid data points from the initial cross-sectional profile scatter plot to obtain a target cross-sectional profile scatter plot;

[0012] The data points in the target cross-sectional profile scatter plot are fitted to obtain the fitted thickness function.

[0013] Optionally, the initial cross-sectional profile scatter plot has the strip width direction as the horizontal axis and the strip thickness direction as the vertical axis.

[0014] Optionally, the invalid data points are data points within a preset first distance range from both ends of the steel strip.

[0015] Optionally, determining the strip wedge degree based on the fitted thickness function includes:

[0016] determining a first target value and a second target value;

[0017] Substituting the first target value into the fitting thickness function to obtain a first thickness value; and substituting the second target value into the fitting thickness function to obtain a second thickness value;

[0018] The degree of strip wedge shape is determined based on the first thickness value and the second thickness value.

[0019] Optionally, determining the first target value and the second target value includes:

[0020] Determine a first horizontal coordinate of the left end of the strip width in the target cross-sectional profile scatter diagram, and a second horizontal coordinate of the right end of the strip width in the target cross-sectional profile scatter diagram; the first horizontal coordinate is a negative value, and the second horizontal coordinate is a positive value;

[0021] The first horizontal coordinate is added with the preset second distance to obtain the first target value; the second horizontal coordinate is subtracted with the preset second distance to obtain the second target value.

[0022] In a second aspect, the present application further provides a device for determining the wedge degree of a strip steel, comprising:

[0023] An acquisition module is used to acquire multiple initial values ​​at different positions of the strip cross section; each initial value includes the strip width and strip thickness at the corresponding position;

[0024] A first determination module, used to determine a fitting thickness function of a cross section of the strip based on the multiple initial values;

[0025] The second determination module is used to determine the wedge degree of the strip based on the fitting thickness function.

[0026] In a third aspect, the present application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method described in the first aspect when executing the computer program.

[0027] In a fourth aspect, the present application further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect.

[0028] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which implements the method described in the first aspect when executed by a processor.

[0029] The method, device, equipment, medium and program product for determining the wedge-shape degree of steel strip provided in the present application obtain multiple initial values ​​at different positions of the cross-section of the steel strip, determine the fitting thickness function of the cross-section of the steel strip, and then determine the wedge-shape degree of the steel strip. The thickness values ​​at multiple positions in the width direction of the steel strip can be fully utilized to characterize the wedge-shape degree of the steel strip by the wedge-shape degree of the fitting thickness function. The defect of limited accuracy caused by determining the wedge-shape degree of the steel strip in the prior art by using the point-to-surface method can be avoided. The problem of excessive deviation in the determined wedge-shape degree of the steel strip due to abnormal edge profile of the steel strip can be avoided, and the wedge-shape degree of the steel strip can be reflected more accurately. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 It is a schematic diagram of an ideal cross-sectional profile curve of a steel strip provided by the background technology of this application;

[0032] Figure 2 It is a schematic diagram of the actual cross-sectional profile curve of the strip provided by the background technology of this application;

[0033] Figure 3 is a flow chart of a method for determining the wedge-shaped degree of a steel strip provided in an embodiment of the present application;

[0034] Figure 4 is a schematic diagram of a fitting thickness function provided in an embodiment of the present application;

[0035] Figure 5 is a schematic structural diagram of a device for determining the wedge-shaped degree of a steel strip provided in an embodiment of the present application;

[0036] Figure 6 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0038] Figure 3 Schematic diagram of the process of determining the wedge degree of the strip provided in the embodiment of the present application. Figure 3 The embodiment of the present application provides a method for determining the wedge-shaped degree of a steel strip, and the execution subject thereof may be an electronic device, for example, a controller. The following description is made by taking the execution subject of the method as an example. The method may include:

[0039] Step 310, obtaining a plurality of initial values ​​at different positions of the strip cross section; each initial value includes the strip width and the strip thickness at the corresponding position;

[0040] Step 320: Determine a fitting thickness function of the cross section of the steel strip based on the multiple initial values;

[0041] Step 330: Determine the strip wedge degree based on the fitted thickness function.

[0042] In step 310, the controller may obtain multiple initial values ​​at different positions of the strip cross section. Specifically, the controller may obtain all measured values ​​of the strip cross section thickness through the thickness gauge arranged on the production line. The controller may select the number of initial values ​​according to the distribution of the strip cross section thickness. If the strip cross section thickness distribution is relatively uniform, fewer initial values ​​may be taken; if the strip cross section thickness distribution is not uniform, more initial values ​​may be taken. Each initial value includes the strip width and strip thickness at the corresponding position.

[0043] In step 320, the controller may determine the fitting thickness function of the strip cross section through multiple initial values. Specifically, the controller may predict the thickness variation trend of the entire strip cross section through the thickness variation trend of multiple initial values, thereby obtaining the fitting thickness function of the strip cross section.

[0044] In step 330, the controller may determine two thickness characteristic values ​​of the cross section of the steel strip based on the fitted thickness function, and then obtain a steel strip wedge value. The steel strip wedge value may characterize the degree of steel strip wedge.

[0045] The method for determining the wedge-shape degree of the steel strip provided in the embodiment of the present application obtains multiple initial values ​​at different positions of the cross-section of the steel strip, determines the fitting thickness function of the cross-section of the steel strip, and then determines the wedge-shape degree of the steel strip. The method can make full use of the thickness values ​​at multiple positions in the width direction of the steel strip, and characterize the wedge-shape degree of the steel strip with the wedge-shape degree of the fitting thickness function. The defect of limited accuracy caused by determining the wedge-shape degree of the steel strip in the prior art by using the point-to-surface method is avoided, and the problem of excessive deviation in the determined wedge-shape degree of the steel strip due to abnormal edge contour of the steel strip is avoided. The method can more accurately reflect the wedge-shape degree of the steel strip.

[0046] In one embodiment, based on multiple initial values, a fitting thickness function of the cross-section of the strip is determined, including: establishing an initial cross-sectional profile scatter plot based on multiple initial values; removing invalid data points from the initial cross-sectional profile scatter plot to obtain a target cross-sectional profile scatter plot; fitting the data points in the target cross-sectional profile scatter plot to obtain a fitting thickness function.

[0047] Further, in one embodiment, the initial cross-sectional profile scatter plot has the strip width direction as the abscissa axis and the strip thickness direction as the ordinate axis.

[0048] Further, in one embodiment, the invalid data points are data points within a preset first distance range from both ends of the steel strip.

[0049] Figure 4 Schematic diagram of the fitting thickness function provided in the embodiment of the present application. Figure 4 As shown, the controller can establish an initial cross-sectional profile scatter plot based on multiple initial values. Specifically, the initial cross-sectional profile scatter plot uses the strip width direction (i.e., the plate width direction position in the figure) as the horizontal axis and the strip thickness direction as the vertical axis. The origin is at the intersection of the strip width center and the point where the strip thickness is zero.

[0050] The controller may remove invalid data points from the initial cross-sectional profile scatter plot to obtain a target cross-sectional profile scatter plot. Specifically, the invalid data points may be data points within a preset first distance range from both ends of the strip. For example, the invalid data points may be data points within a range of 40 mm from both ends of the strip.

[0051] The controller can perform quadratic curve fitting on the data points in the target cross-sectional profile scatter diagram to obtain a fitting thickness function.

[0052] The method for determining the wedge-shaped degree of the steel strip provided in the embodiment of the present application eliminates invalid data points to obtain a scatter plot of the target cross-sectional profile, thereby obtaining a fitting thickness function, which can accurately reflect the wedge-shaped degree of the steel strip.

[0053] In one embodiment, the wedge-shaped degree of the steel strip is determined based on a fitted thickness function, including: determining a first target value and a second target value; substituting the first target value into the fitted thickness function to obtain a first thickness value; and substituting the second target value into the fitted thickness function to obtain a second thickness value; and determining the wedge-shaped degree of the steel strip based on the first thickness value and the second thickness value.

[0054] Specifically, the first target value and the second target value are the strip widths corresponding to the two strip thickness feature points. The controller substitutes the first target value into the fitting thickness function to obtain the first thickness value, and substitutes the second target value into the fitting thickness function to obtain the second thickness value. The difference between the first thickness value and the second thickness value is the strip wedge value, and the size of the strip wedge value reflects the degree of strip wedge.

[0055] The method for determining the wedge-shaped degree of the steel strip provided in the embodiment of the present application obtains the first thickness value and the second thickness value by substituting the first target value and the second target value into the fitting thickness function, and then determines the wedge-shaped degree of the steel strip, thereby being able to accurately reflect the wedge-shaped degree of the steel strip.

[0056] In one embodiment, determining a first target value and a second target value includes: determining a first horizontal coordinate of the left end of the strip width in a scatter plot of the target cross-sectional profile, and a second horizontal coordinate of the right end of the strip width in a scatter plot of the target cross-sectional profile; the first horizontal coordinate is a negative value, and the second horizontal coordinate is a positive value; adding a preset second distance to the first horizontal coordinate to obtain a first target value; subtracting the preset second distance from the second horizontal coordinate to obtain a second target value.

[0057] The first target value may be a value of a preset second distance from the left end of the steel strip on the cross section of the steel strip. The second target value may be a value of a preset second distance from the right end of the steel strip on the cross section of the steel strip. Figure 4 As shown, if the strip width is 1200 mm, the preset second distance is 40 mm, the first horizontal coordinate is -600, the first target value is -560, and the second target value is 560.

[0058] The method for determining the wedge-shaped degree of the steel strip provided in the embodiment of the present application determines the first target value and the second target value to obtain the first thickness value and the second thickness value, and then determines the wedge-shaped degree of the steel strip, thereby being able to accurately reflect the wedge-shaped degree of the steel strip.

[0059] The device for determining the wedge-shaped degree of the steel strip provided in the present application is described below. The device for determining the wedge-shaped degree of the steel strip described below and the method for determining the wedge-shaped degree of the steel strip described above can be referred to in correspondence with each other.

[0060] Figure 5 Schematic diagram of the structure of the device for determining the wedge degree of the strip provided in the embodiment of the present application. Figure 5The device for determining the wedge-shaped degree of a steel strip provided in an embodiment of the present application may include:

[0061] The acquisition module 510 is used to acquire a plurality of initial values ​​at different positions of the cross section of the steel strip; each initial value includes the width and thickness of the steel strip at the corresponding position;

[0062] A first determination module 520, configured to determine a fitting thickness function of a cross section of the strip based on the multiple initial values;

[0063] The second determination module 530 is used to determine the degree of strip wedge shape based on the fitted thickness function.

[0064] The device for determining the wedge-shape degree of the steel strip provided in the embodiment of the present application obtains multiple initial values ​​at different positions of the cross-section of the steel strip, determines the fitting thickness function of the cross-section of the steel strip, and then determines the wedge-shape degree of the steel strip. It can make full use of the thickness values ​​at multiple positions in the width direction of the steel strip, and characterize the wedge-shape degree of the steel strip with the wedge-shape degree of the fitting thickness function. It avoids the defect of limited accuracy caused by determining the wedge-shape degree of the steel strip in the prior art in a point-to-surface manner, and also avoids the problem of excessive deviation in the determined wedge-shape degree of the steel strip due to abnormal edge contour of the steel strip, and can more accurately reflect the wedge-shape degree of the steel strip.

[0065] In one embodiment, the first determining module is specifically configured to:

[0066] Based on the multiple initial values, establishing an initial cross-sectional profile scatter plot;

[0067] Eliminating invalid data points from the initial cross-sectional profile scatter plot to obtain a target cross-sectional profile scatter plot;

[0068] The data points in the target cross-sectional profile scatter plot are fitted to obtain the fitted thickness function.

[0069] In one embodiment, the initial cross-sectional profile scatter plot has the strip width direction as the abscissa axis and the strip thickness direction as the ordinate axis.

[0070] In one embodiment, the invalid data points are data points within a preset first distance range from both ends of the steel strip.

[0071] In one embodiment, the second determining module is specifically configured to:

[0072] determining a first target value and a second target value;

[0073] Substituting the first target value into the fitting thickness function to obtain a first thickness value; and substituting the second target value into the fitting thickness function to obtain a second thickness value;

[0074] The degree of strip wedge shape is determined based on the first thickness value and the second thickness value.

[0075] In one embodiment, the second determining module is specifically configured to:

[0076] Determine a first horizontal coordinate of the left end of the strip width in the target cross-sectional profile scatter diagram, and a second horizontal coordinate of the right end of the strip width in the target cross-sectional profile scatter diagram; the first horizontal coordinate is a negative value, and the second horizontal coordinate is a positive value;

[0077] The first horizontal coordinate is added with the preset second distance to obtain the first target value; the second horizontal coordinate is subtracted with the preset second distance to obtain the second target value.

[0078] Specifically, the device for determining the wedge-shaped degree of the above-mentioned strip provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the controller, and can achieve the same technical effect. The parts and beneficial effects of this embodiment that are the same as those of the method embodiment will not be described in detail here.

[0079] Figure 6 Schematic diagram of the structure of the electronic device provided in the embodiment of the present application. Figure 6 As shown, the electronic device may include: a processor 610, a communication interface 620, a memory 630 and a communication bus 640, wherein the processor 610, the communication interface 620 and the memory 630 communicate with each other through the communication bus 640. The processor 610 may call the logic instructions in the memory 630 to execute the method for determining the wedge degree of the steel strip, for example, including:

[0080] Acquire multiple initial values ​​at different positions of the strip cross section; each initial value includes the strip width and strip thickness at the corresponding position;

[0081] Determining a fitting thickness function of a cross section of the steel strip based on the multiple initial values;

[0082] Based on the fitted thickness function, the degree of strip wedge shape is determined.

[0083] In addition, the logic instructions in the above-mentioned memory 630 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-On l yMemory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0084] On the other hand, the present application also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for determining the wedge-shaped degree of the strip provided by the above methods, for example, including:

[0085] Acquire multiple initial values ​​at different positions of the strip cross section; each initial value includes the strip width and strip thickness at the corresponding position;

[0086] Determining a fitting thickness function of a cross section of the steel strip based on the multiple initial values;

[0087] Based on the fitted thickness function, the degree of strip wedge shape is determined.

[0088] In another aspect, the present application further provides a computer program product, the computer program product comprising a computer program, the computer program can be stored on a non-transitory computer-readable storage medium, and when the computer program is executed by a processor, the computer can execute the steps of the method for determining the wedge-shaped degree of the strip provided by the above methods, for example, including:

[0089] Acquire multiple initial values ​​at different positions of the strip cross section; each initial value includes the strip width and strip thickness at the corresponding position;

[0090] Determining a fitting thickness function of a cross section of the steel strip based on the multiple initial values;

[0091] Based on the fitted thickness function, the degree of strip wedge shape is determined.

[0092] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0093] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0094] It should also be noted that the terms "first", "second", etc. in the embodiments of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0095] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0096] "Determine B based on A" in the embodiments of the present application means that the factor A should be considered when determining B. It is not limited to "B can be determined based on A alone", but should also include: "Determine B based on A and C", "Determine B based on A, C and E", "Determine C based on A, and further determine B based on C", etc. In addition, it can also include taking A as a condition for determining B, for example, "When A meets the first condition, use the first method to determine B"; for another example, "When A meets the second condition, determine B", etc.; for another example, "When A meets the third condition, determine B based on the first parameter", etc. Of course, it can also be a condition that takes A as a factor for determining B, for example, "When A meets the first condition, use the first method to determine C, and further determine B based on C", etc.

[0097] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for determining the wedge shape of a steel strip, characterized in that: include: Obtain multiple initial values ​​at different positions of the strip cross section; Each initial value includes the strip width and strip thickness at the corresponding position; Determining a fitting thickness function of a cross section of the steel strip based on the multiple initial values; Based on the fitted thickness function, the degree of strip wedge shape is determined.

2. The method for determining the degree of strip wedge shape according to claim 1, characterized in that: The step of determining a fitting thickness function of a cross section of the steel strip based on the multiple initial values ​​comprises: Based on the multiple initial values, establishing an initial cross-sectional profile scatter plot; Eliminating invalid data points from the initial cross-sectional profile scatter plot to obtain a target cross-sectional profile scatter plot; The data points in the target cross-sectional profile scatter plot are fitted to obtain the fitted thickness function.

3. The method for determining the degree of strip wedge shape according to claim 2, characterized in that: The initial cross-sectional profile scatter plot has the strip width direction as the abscissa axis and the strip thickness direction as the ordinate axis.

4. The method for determining the degree of strip wedge shape according to claim 2, characterized in that: The invalid data points are data points within a preset first distance range from both ends of the strip.

5. The method for determining the degree of strip wedge shape according to claim 2, characterized in that: Determining the strip wedge degree based on the fitted thickness function includes: determining a first target value and a second target value; Substituting the first target value into the fitting thickness function to obtain a first thickness value; and substituting the second target value into the fitting thickness function to obtain a second thickness value; The degree of strip wedge shape is determined based on the first thickness value and the second thickness value.

6. The method for determining the degree of strip wedge shape according to claim 5, characterized in that: The determining of the first target value and the second target value comprises: Determine a first horizontal coordinate of the left end of the strip width in the target cross-sectional profile scatter diagram, and a second horizontal coordinate of the right end of the strip width in the target cross-sectional profile scatter diagram; the first horizontal coordinate is a negative value, and the second horizontal coordinate is a positive value; The first horizontal coordinate is added with the preset second distance to obtain the first target value; the second horizontal coordinate is subtracted with the preset second distance to obtain the second target value.

7. A device for determining the wedge shape of a steel strip, characterized in that: include: An acquisition module, used to acquire multiple initial values ​​at different positions of the strip cross section; Each initial value includes the strip width and strip thickness at the corresponding position; A first determination module, used to determine a fitting thickness function of a cross section of the strip based on the multiple initial values; The second determination module is used to determine the wedge degree of the strip based on the fitting thickness function.

8. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method for determining the degree of wedge shape of the steel strip according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the method for determining the wedge-shaped degree of a steel strip according to any one of claims 1 to 6 is implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the method for determining the wedge-shaped degree of a steel strip according to any one of claims 1 to 6 is implemented.

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