A design method, device, medium, and electronic equipment of an intermediate roll shape

Abstract

The embodiment of the application provides a design method of an intermediate roller shape, which comprises the following steps: determining an actual roll shifting limit position change curve of a target mill group according to at least one width strip roll shifting process distribution rule of the target mill group, the target mill group being any one of each rolling mill group; obtaining an initial intermediate roller shape curve, and optimizing the initial intermediate roller shape curve according to the actual roll shifting limit position change curve to obtain a target intermediate roller shape curve. The technical scheme of the embodiment of the application can reasonably adjust the crown of different width strips by controlling the intermediate roller shape.

Description

TECHNICAL FIELD

[0001] The present application relates to the rolling technology field, in particular to a design method and device of intermediate roll shape, medium and electronic equipment. BACKGROUND

[0002] The convexity adjustment range of the traditional cubic CVC roll shape curve decreases rapidly with the decrease of the strip width, and presents a quadratic relationship. The roll shape designed by the traditional scheme has a significant adjustment effect on wide gauge strips in the case of unit roll shifting distance, but has a slight convexity adjustment effect on narrow gauge strips. Therefore, the intermediate roll CVC roll shape of the rolling mill can achieve good convexity control effect in the case of wide gauge strips, but in the case of narrow gauge strips, even if the roll is shifted to the extreme position, the convexity control requirement cannot be met.

[0003] Therefore, there is an urgent need in the art for a design method of intermediate roll shape, which can reasonably adjust the convexity of different width strips by controlling the intermediate roll shape. SUMMARY

[0004] Embodiments of the present application provide a design method, device, medium and electronic equipment of intermediate roll shape, which can at least to some extent reasonably adjust the convexity of different width strips by controlling the intermediate roll shape.

[0005] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0006] According to one aspect of the embodiments of the present application, a design method of intermediate roll shape is provided, the method comprising: determining an actual roll shifting limit position change curve of a target mill group according to a roll shifting process distribution rule of at least one width strip of the target mill group, the target mill group being any one of each rolling mill group; obtaining an initial intermediate roll shape curve, and optimizing the initial intermediate roll shape curve according to the actual roll shifting limit position change curve to obtain a target intermediate roll shape curve.

[0007] In some embodiments of the present application, the determination of the actual roll shifting limit position change curve of the target mill group according to the roll shifting process distribution rule of at least one width strip of the target mill group comprises: obtaining a strip roll shifting process box plot corresponding to the roll shifting process of at least one width strip of the target mill group, and determining the distribution rule of the corresponding strip roll shifting process according to each strip roll shifting process box plot; determining the strip roll shifting limit position according to each strip roll shifting process distribution rule, and generating the actual roll shifting limit position change curve of the target mill group.

[0008] In some embodiments of the present application, the obtaining the initial intermediate roll shape curve comprises: establishing a coordinate system with a center of symmetry of the roll shape curve as an origin, and determining the initial intermediate roll shape curve in the coordinate system.

[0009] In some embodiments of the present application, the optimizing the initial intermediate roll shape curve according to the actual roll shifting limit position change curve to obtain a target intermediate roll shape curve comprises: determining a crown range in the actual roll shifting limit position change curve; selecting a reasonable roll diameter difference design principle based on a CVC roll shape roll diameter difference curve design, and optimizing the initial intermediate roll shape curve through the crown range to obtain the target intermediate roll shape curve.

[0010] In some embodiments of the present application, after obtaining the target intermediate roll shape curve, the method further comprises: evaluating the target intermediate roll shape curve based on a crown change rule, the crown change rule being used to represent a change relationship between a strip crown and a strip width.

[0011] In some embodiments of the present application, based on the foregoing scheme, the evaluating the target intermediate roll shape curve based on the crown change rule comprises: determining a form of the target intermediate roll shape curve under a no-load condition; calculating a crown adjustment domain and an inter-roll contact pressure under a load condition through finite element simulation based on the crown change rule and the form of the target intermediate roll shape curve under the no-load condition; and evaluating the target intermediate roll shape curve according to the crown adjustment domain and the inter-roll contact pressure.

[0012] According to an aspect of an embodiment of the present application, there is provided a design device for an intermediate roll shape, the device comprising: a determination unit configured to determine an actual roll shifting limit position change curve of a target mill group according to at least one width of a strip roll shifting process distribution rule of the target mill group, the target mill group being any one of each rolling mill group; and an obtaining unit configured to obtain an initial intermediate roll shape curve, and optimize the initial intermediate roll shape curve according to the actual roll shifting limit position change curve to obtain a target intermediate roll shape curve.

[0013] According to an aspect of an embodiment of the present application, there is provided a computer readable storage medium having at least one program code stored therein, the at least one program code being loaded and executed by a processor to implement operations performed by the design method for an intermediate roll shape as described.

[0014] According to an aspect of the embodiments of the present application, an electronic device is provided, which includes one or more processors and one or more memories having at least one program code stored therein, the at least one program code being loaded and executed by the one or more processors to implement the operations performed by the design method of the intermediate roll profile as described.

[0015] Based on the above scheme, the technical scheme provided by the present application has at least the following advantages and progress:

[0016] In the present application, the actual roll shifting limit position change curve of the target machine set is determined according to the strip width roll shifting process distribution law of at least one width of the target machine set, the initial intermediate roll profile curve is obtained, the initial intermediate roll profile curve is optimized according to the actual roll shifting limit position change curve, and the target intermediate roll profile curve is obtained. The target intermediate roll profile curve has good adaptability to the strip width and good crown adjustment capability for strip of various width ranges, and can adjust the intermediate roll profile roll shifting according to the target intermediate roll profile curve to reasonably adjust the crown of strip of different widths.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0018] The drawings incorporated into the specification and forming a part thereof, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the application. It is to be expressly understood that the drawings are only some embodiments of the present application, and other drawings can be obtained by those of ordinary skill in the art without creative effort based on these drawings. In the drawings:

[0019] Figure 1 A flowchart of a design method of an intermediate roll profile according to an embodiment of the present application is shown;

[0020] Figure 2 A flowchart of a design method of an intermediate roll profile according to an embodiment of the present application is shown;

[0021] Figure 3 A box plot of roll shifting process of strip of various widths according to an embodiment of the present application is shown;

[0022] Figure 4 A graph of the actual roll shifting limit position change curve according to an embodiment of the present application is shown;

[0023] Figure 5 A coordinate system diagram with the center of symmetry of the roll profile as the origin in an embodiment of the present application is shown;

[0024] Figure 6 A flow chart of a design method of the intermediate roll profile according to an embodiment of the present application is shown;

[0025] Figure 7 A diagram of the target intermediate roll profile curve in an embodiment of the present application is shown;

[0026] Figure 8 A diagram of the relationship between the crown adjustment range and the plate width in an embodiment of the present application is shown;

[0027] Figure 9 A diagram of the crown adjustment limit of two roll profile curves under various plate widths is shown;

[0028] Figure 10 A diagram of the crown adjustment domain under a rolling force of 1.2 t / mm in an embodiment of the present application is shown;

[0029] Figure 11 A diagram of the inter-roller contact pressure distribution under a rolling force of 1.2 t / mm in an embodiment of the present application is shown;

[0030] Figure 12 A flow chart of a design method of the intermediate roll profile according to an embodiment of the present application is shown;

[0031] Figure 13 A schematic diagram of a design device of the intermediate roll profile according to an embodiment of the present application is shown;

[0032] Figure 14 A schematic diagram of the structure of a computer system of an electronic device suitable for implementing an embodiment of the present application is shown. DETAILED DESCRIPTION

[0033] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations may, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example implementations to those skilled in the art.

[0034] Reference will now be made to Figure 1 .

[0035] Figure 1 A flow chart of a design method of the intermediate roll profile according to an embodiment of the present application is shown; Figure 1 As shown in FIG. 10, the method can include steps S101-S102:

[0036] Step S101: determining an actual roll shifting limit position change curve of the target mill group according to at least one width of the strip shifting process distribution law of the target mill group, the target mill group being any one of the rolling mill groups.

[0037] Step S102: obtaining an initial intermediate roll shape curve, optimizing the initial intermediate roll shape curve according to the actual roll shifting limit position change curve, and obtaining a target intermediate roll shape curve.

[0038] In the present application, the actual roll shifting limit position change curve of the target mill group is determined according to at least one width of the strip shifting process distribution law of the target mill group, the initial intermediate roll shape curve is obtained, and the initial intermediate roll shape curve is optimized according to the actual roll shifting limit position change curve to obtain the target intermediate roll shape curve. The target intermediate roll shape curve has good adaptability to the strip width and good crown adjustment capability for strips of various width ranges, and the intermediate roll shape can be adjusted according to the target intermediate roll shape curve to reasonably adjust the crown of strips of different widths.

[0039] Please refer to Figure 2 .

[0040] Figure 2 The flowchart of the design method of the intermediate roll shape according to one embodiment of the present application is shown as Figure 2 The method of determining the actual roll shifting limit position change curve of the target mill group according to at least one width of the strip shifting process distribution law of the target mill group can include steps S201-S202 as shown in the figure.

[0041] Step S201: obtaining a strip shifting process box plot corresponding to the strip shifting process of at least one width of the target mill group, and determining the strip shifting process distribution law according to each strip shifting process box plot.

[0042] Step S202: determining the strip shifting limit position according to each strip shifting process distribution law, and generating the actual roll shifting limit position change curve of the target mill group.

[0043] In the production process of the finishing mill or the temper mill, the unit rolling force is close, the strip width and the roll shifting process are different, and therefore it is necessary to analyze the change of the secondary crown of strips of various widths with the roll shifting distance in combination with the roll shifting process in the actual rolling process. First, the roll shifting process data of all specifications of strips of the mill group are statistically analyzed, and the strip shifting process box plots of strips of various widths are shown as Figure 3 .

[0044] From the above figure, it can be seen that the strip transverse shifting process is quite different under different strip width conditions. According to the strip transverse shifting process distribution law obtained from the above box plot, considering the transverse shifting position of most strips and the extreme position of the transverse shifting of individual strip specifications, the actual transverse shifting extreme position change curve diagram is obtained as shown in Figure 4 .

[0045] From the above curve, it can be seen that with the increase of the strip width, the average transverse shifting position presents a decreasing trend, and the negative transverse shifting is basically close to the negative transverse shifting limit convexity set by the mill train, and the positive transverse shifting limit position gradually decreases with the increase of the strip width.

[0046] When the strip width is less than 1000mm, the negative transverse shifting limit position is reached, but the positive transverse shifting is close to the maximum value set by the mill train; when the strip width is greater than 1700mm, the positive transverse shifting is relatively small, but the negative transverse shifting of the roll even exceeds the set limit position.

[0047] In the present application, the method for obtaining the initial intermediate roll shape curve can comprise: establishing a coordinate system with the symmetry center of the roll shape curve as the origin, and determining the initial intermediate roll shape curve in the coordinate system.

[0048] Referring to Figure 5 , Figure 5 a coordinate system diagram with the symmetry center of the roll shape curve as the origin in an embodiment of the present application is shown. In order to achieve the convexity adjustment range under the condition of uniform width, the intermediate roll shape of high-order curve needs to be used, which can simplify the high-order CVC roll shape design process, and a coordinate system with the symmetry center of the roll shape curve as the origin can be established, wherein the X-Y coordinate system is a coordinate system with one end of the roll as the origin for design, and x-y is a coordinate system established with the symmetry center of the CVC roll shape curve as the origin.

[0049] In the present application, the transformation relationship of the roll shape curve of the original coordinate system established with one end of the roll as the origin and the curve function designed with the center point of the CVC curve can be as follows:

[0050] R(X)=f(X―S0)+D0

[0051] R represents the roll shape function established with one end of the roll as the coordinate system;

[0052] f represents the roll shape function under the coordinate system established with the center point of the curve;

[0053] S0 represents the horizontal translation distance of the two coordinate systems;

[0054] D0 represents the vertical translation distance of the two coordinate systems.

[0055] In the present application, the relationship between the bearing roll gap convexity and the transverse shifting and the strip width can be derived by using an odd function f(x).

[0056] At this time the upper and lower roll shapes coincide, and the functions are both f(x), and the crown is zero. The difference is that the roll shifting directions of the upper and lower rolls are opposite, and thus the functions of the upper and lower rolls after roll shifting are as follows:

[0057] f a (x) = f(x-s)

[0058] f b (x) = f(x+s)

[0059] where s represents the roll shifting distance (positive or negative);

[0060] f a (x) represents the roll shape function of the upper roll after roll shifting;

[0061] f b (x) represents the roll shape function of the lower roll after roll shifting;

[0062] The roll gap function is equal to the difference between the curves of the upper and lower rolls after roll shifting, and thus the roll gap function after roll shifting is obtained by subtracting the above functions:

[0063] g(x,s) = f a (x) - f b (x)

[0064] The roll shifting of the rolling mill provides secondary and fourth crown by calculating the roll gap function.

[0065] where the secondary crown calculation function is as follows:

[0066]

[0067] The fourth crown calculation function is as follows:

[0068]

[0069] The basic function f(x) is designed with the CVC curve as the center. Since f(x) is an odd function, only odd terms are retained in the design process using a polynomial. As follows:

[0070] f(x) = a1x + a3x 3 + a5x 5 + a7x 7 + a9x 9

[0071] Where the intermediate roll shape curve in the application adds high-order terms relative to the traditional CVC roll shape curve, which can make the roll shape achieve the effect of close crown adjustment range for strip steel under various width conditions.

[0072] Please refer to Figure 6 .

[0073] Figure 6 A flow chart of the design method of the intermediate roll contour according to one embodiment of the present application is shown as follows, Figure 6 As shown, the method of optimizing the initial intermediate roll contour curve according to the actual roll shifting limit position change curve to obtain a target intermediate roll contour curve can include steps S601-S602:

[0074] Step S601: Determine the crown range in the actual roll shifting limit position change curve.

[0075] Step S602: Based on the curve design of the CVC roll contour roll diameter difference, select a reasonable roll diameter difference design principle, optimize the initial intermediate roll contour curve through the crown range, and obtain a target intermediate roll contour curve.

[0076] In the present application, the intermediate roll contour curve can be composed of a cubic curve, wherein the main coefficients of the quadratic term and the cubic term determine the strip crown adjustment range, and the first order term coefficient mainly determines the support roll roll diameter difference size. The specific design of the intermediate roll contour curve can be as follows:

[0077] (1) Preliminary design of CVC roll contour based on crown adjustment range

[0078] a) Preliminary establishment of intermediate roll roll shifting limit crown target range

[0079] On the basis of the original intermediate roll CVC roll contour crown adjustment range, the range of the positive roll shifting limit position crown and the range of the negative roll shifting limit position crown after modification are preliminarily established.

[0080] For example, through the above comparison of the intermediate roll contours of Shougang 1970, Baosteel 1730 and Wugang 2180 rolling mills, it can be seen that the roll shifting crown adjustment range of the intermediate roll CVC roll contour is usually concentrated in the positive crown range. The reason for this is that the bending of the rolling mill roll system usually causes insufficient positive crown capacity, so the target is to provide a larger positive crown of the rolling mill during rolling. Therefore, the intermediate roll contour design still aims to provide a positive crown, while increasing the negative crown adjustment range.

[0081] b) Establishment of roll contour library and simulation calculation

[0082] According to the above designed intermediate roll crown adjustment range, an intermediate roll contour library is established to calculate the change of the load roll gap crown under different intermediate roll contour conditions.

[0083] In the process of establishing the intermediate roll contour library, since the roll shifting crown adjustment range is mainly related to the quadratic and cubic coefficients of the roll contour, the first order coefficient is kept unchanged with the original roll contour, and a series of roll contours are designed within the positive shifting and negative shifting crown range established in step (a).

[0084] Based on the finite element simulation tool, a series of roll shapes are calculated for the above design, and the sizes of the roll gaps of different roll shapes are solved.

[0085] c) Evaluation and selection of the intermediate roll shape based on the roll gap convexity of the intermediate roll

[0086] The design target of the intermediate roll shape is that the roll gap convexity of the intermediate roll is as close as possible to the original roll system when the intermediate roll is negatively shifted to the limit position. According to the results calculated in step (b) above, the optimal intermediate roll shape is preliminarily selected.

[0087] The selection of the intermediate roll shape needs to be combined with the results of the finite element calculation to analyze the change in the size of the roll gap shape of the intermediate roll for different widths of the strip steel under different rolling forces. The intermediate roll should be able to meet the production of strip steel with mid-waved defects when the intermediate roll is negatively shifted to the limit position.

[0088] (2) Curve design based on the roll diameter difference of the CVC roll shape

[0089] The design target of the roll diameter difference is to minimize the unevenness of the contact pressure distribution between the intermediate rolls. The design of the CVC roll shape needs to focus on the maximum and minimum roll diameter difference in the middle region to avoid excessive roll diameter difference and to avoid aggravation of the roll wear and the axial stress. The selection of the first term determines the roll diameter difference of the CVC, and therefore, further research needs to be conducted on the selection of the first term. After investigation and exploration, the following three principles are selected from the principles for formulating the commonly used first term:

[0090] (1) The roll diameter difference between the extreme points in the middle of the roll shape is unchanged relative to the original roll diameter difference.

[0091] (2) The roll diameter difference between the extreme points in the middle of the roll shape is increased relative to the original roll diameter difference, and the convexity adjustment range is increased in proportion.

[0092] (3) When the commonly used strip steel width is produced, the roll diameter difference of the intermediate roll at the two end positions is unchanged. In the present case, the depth of the chamfer of the supporting roll is considered to be 200 mm, and the interval of the middle region without chamfer is 1570 mm. Therefore, the intermediate roll is designed to have a width of 1450 mm and 1500 mm.

[0093] The full-width balanced WVC roll shape of the mill stand is thus designed, i.e., the target intermediate roll shape curve described in the present application, which can be shown as the WVC curve in Figure 7 . Figure 8 The relationship diagram of the convexity adjustment range and the plate width in one embodiment of the present application is shown in Figure 8 , after the introduction of the target intermediate roll shape curve described in the present application, the adaptability of the secondary convexity to the width of the strip steel is further increased.

[0094] In the present application, the ratio of the crown adjustment range to the strip width of 1870mm is 0.40 when the strip width is 800mm under the target intermediate roll profile curve adjustment, and the ratio of the crown adjustment range to the strip width of 1870mm is 0.18 for the original wide gauge enhanced CVC roll profile curve. It can be seen that the roll profile can significantly improve the adaptability of the CVC roll profile crown adjustment range to the width.

[0095] Figure 9 The crown adjustment limit diagrams of two roll profiles under various strip widths are shown, and the crown of the strip roll profile is plotted in detail from the typical strip width of the extremely narrow to the extremely wide with the strip width and the roll shifting. In Figure 9 , the crown adjustment range of the 800mm strip is increased from 102um to 193um, and the crown adjustment range of the 1870mm strip is reduced from 560um to 490um.

[0096] Please refer to Figure 10 , Figure 10 The crown adjustment domain diagram under the rolling force of 1.2t / mm in an embodiment of the present application is shown, as shown in Figure 10 , the roll profile scheme adopted in the present application, i.e. Figure 10 the WVC roll profile in , the crown adjustment domain is increased, especially for the narrow gauge strip, the effect of increasing the crown adjustment domain is more obvious, and for the wide gauge strip, the crown adjustment domain is close to the original crown adjustment domain.

[0097] Please refer to Figure 11 , Figure 11 The inter-roll contact pressure distribution diagram under the rolling force of 1.2t / mm in an embodiment of the present application is shown, as shown in Figure 11 , the target intermediate roll profile, i.e. Figure 11 the WVC roll profile in , the inter-roll contact pressure of the "small head section" is significantly smaller than the original roll profile and the 3SVC roll profile, and the unevenness of the inter-roll contact pressure distribution is increased.

[0098] In the present application, after obtaining the target intermediate roll profile curve, the method can further include: evaluating the target intermediate roll profile curve based on a crown change rule, the crown change rule being used to represent the change relationship between the strip crown and the strip width.

[0099] Please refer to Figure 12 .

[0100] Figure 12 The flow diagram of the design method of the intermediate roll profile according to an embodiment of the present application is shown, as shown in Figure 12 , the method of evaluating the target intermediate roll profile curve based on the crown change rule can include steps S1201-S1203:

[0101] Step S1201: determine the form of the target intermediate roll contour curve under no-load condition.

[0102] Step S1202: based on the convexity variation rule and the form of the target intermediate roll contour curve under no-load condition, calculate the convexity adjustment domain and the inter-roll contact pressure under load condition through finite element simulation.

[0103] Step S1203: evaluate the target intermediate roll contour curve according to the convexity adjustment domain and the inter-roll contact pressure.

[0104] Next, an apparatus embodiment of the present application will be described in conjunction with the accompanying drawings.

[0105] Please refer to Figure 13 .

[0106] Figure 13 A schematic diagram of an intermediate roll contour design apparatus according to an embodiment of the present application is shown, which can include a determination unit 1301 and an acquisition unit 1302.

[0107] In the present application, the intermediate roll contour design apparatus 1300 can be specifically configured as: the determination unit 1301 is used to determine an actual roll shifting limit position variation curve of a target mill group according to at least one width of the strip roll shifting process distribution rule of the target mill group, the target mill group being any one of each rolling mill group; the acquisition unit 1302 is used to acquire an initial intermediate roll contour curve, and optimize the initial intermediate roll contour curve according to the actual roll shifting limit position variation curve to obtain a target intermediate roll contour curve.

[0108] Next, please refer to Figure 14 .

[0109] Figure 14 A structural schematic diagram of a computer system of an electronic device suitable for implementing the embodiments of the present application is shown.

[0110] It should be noted that, Figure 14 The computer system 1400 of the electronic device shown is only an example, and should not impose any limitation on the functions and use range of the embodiments of the present application.

[0111] As Figure 14As shown, the computer system 1400 includes a central processing unit (CPU) 1401 which can execute various appropriate actions and processes in accordance with a program stored in a read-only memory (ROM) 1402 or a program loaded from the storage section 1408 into a random access memory (RAM) 1403, such as the methods described in the above embodiments. Various programs and data required for the operation of the system are also stored in the RAM 1403. The CPU 1401, the ROM 1402, and the RAM 1403 are connected to each other through a bus 1404. An input / output (I / O) interface 1405 is also connected to the bus 1404.

[0112] Connected to the I / O interface 1405 are an input section 1406 including a keyboard, a mouse, etc.; an output section 1407 including a display such as a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage section 1408 including a hard disk, etc.; and a communication section 1409 including a network interface card such as a LAN (Local Area Network) card, a modem, etc. The communication section 1409 performs communication processing via a network such as the Internet. A drive 1410 is also connected to the I / O interface 1405 as necessary. A removable recording medium 1411 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc. is attached to the drive 1410 as necessary, so that a computer program read therefrom is installed into the storage section 1408 as necessary.

[0113] In particular, according to embodiments of the present application, the processes described above with reference to the flowcharts can be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program carried on a computer readable medium, the computer program containing program code for executing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via the communication section 1409, and / or installed from the removable recording medium 1411. When the computer program is executed by the central processing unit (CPU) 1401, various functions defined in the system of the present application are executed.

[0114] It should be noted that the computer-readable medium in the embodiments of the present application can be a computer-readable signal medium or a computer-readable storage medium or any combination thereof. The computer-readable storage medium may, for example, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or apparatus, or any combination thereof. More specific examples of the computer-readable storage medium can include, but are not limited to, an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a portable compact disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present application, the computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, device or apparatus. In the present application, the computer-readable signal medium can include a data signal carrying computer-readable program code in a baseband or as a part of a carrier wave. Such a propagated data signal can take on various forms, including but not limited to an electromagnetic signal, an optical signal, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than the computer-readable storage medium that can send, propagate or transmit a program for use by or in connection with an instruction execution system, device or apparatus. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, or the like, or any suitable combination thereof.

[0115] The flowcharts and block diagrams in the drawings illustrate the possible implementation architectures, functions and operations of the systems, methods and computer program products according to various embodiments of the present application. In the flowcharts or block diagrams, each block can represent a module, a program segment or a part of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions noted in the blocks can occur in different orders than that shown in the drawings. For example, two blocks that are shown in succession can actually be executed substantially in parallel, and they can also be executed in reverse order, depending on the involved functions. It should also be noted that each block in the block diagrams or flowcharts, and the combination of blocks in the block diagrams or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified functions or operations, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0116] The units described in the embodiments of the present application can be implemented by software, or can be implemented by hardware, and the units described can also be arranged in a processor. In some cases, the names of the units do not constitute a limitation on the units themselves.

[0117] As another aspect, the present application also provides a computer program product or computer program, which includes computer instructions stored in a computer readable storage medium. A processor of a computer device reads the computer instructions from the computer readable storage medium, and the processor executes the computer instructions, so that the computer device executes the method for designing a roll shape of an intermediate roll described in the above embodiments.

[0118] As another aspect, the present application also provides a computer readable medium, which can be included in the electronic device described in the above embodiments, or can exist separately without being assembled into the electronic device. The computer readable medium carries one or more programs, which, when executed by the electronic device, cause the electronic device to implement the method for designing a roll shape of an intermediate roll described in the above embodiments.

[0119] It should be noted that although several modules or units of the device for action execution are mentioned in the above detailed description, such division is not mandatory. In fact, according to the embodiments of the present application, the features and functions of two or more modules or units described above can be embodied in one module or unit. Conversely, the features and functions of one module or unit described above can be further divided into several modules or units.

[0120] From the above description of the embodiments, those skilled in the art will readily appreciate that the example embodiments described herein can be implemented by software, or by software in combination with the necessary hardware. Therefore, the technical solutions according to the embodiments of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, U disk, mobile hard disk, etc.) or network, and includes several instructions to make a computing device (which can be a personal computer, server, touch terminal, or network device, etc.) execute the methods according to the embodiments of the present application.

[0121] Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. The present application is intended to cover any variations, uses, or adaptations of the application following the general principles thereof and including such departures from the present disclosure as come within known use or custom in the art.

[0122] It is to be understood that the application is not limited to the precise construction already described above and shown in the drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application should only be limited by the claims appended hereto.

Claims

1. A method for designing the shape of an intermediate roller, characterized in that, The method includes: Based on the strip roll shifting process distribution law of at least one width of the target unit, determine the actual roll shifting limit position change curve of the target unit, wherein the target unit is any one of the rolling mills; Obtain the initial intermediate roll profile curve, and optimize the initial intermediate roll profile curve based on the actual roll slippage limit position change curve to obtain the target intermediate roll profile curve; The step of determining the actual roll shifting limit position variation curve of the target unit based on the strip roll shifting process distribution law of at least one width of the target unit includes: Draw a box plot of the strip roll shifting process corresponding to at least one width of the target unit, and determine the distribution law of the strip roll shifting process based on the box plot of each strip roll shifting process. Based on the process distribution law of each strip steel roll shifting roll, the limit position of the strip steel roll shifting roll is determined, and the actual roll shifting roll limit position change curve of the target unit is generated. The step of optimizing the initial intermediate roll profile curve based on the actual roll deviation limit position change curve to obtain the target intermediate roll profile curve includes: Determine the convexity range in the actual roller limit position change curve; Based on the curve design of CVC roll shape and roll diameter difference, a reasonable roll diameter difference design principle is selected, and the initial intermediate roll shape curve is optimized through the convexity range to obtain the target intermediate roll shape curve.

2. The method according to claim 1, characterized in that, The process of obtaining the initial intermediate roll profile curve includes: Establish a coordinate system with the center of symmetry of the roller curve as the origin, and obtain the initial intermediate roller curve determined on the coordinate system.

3. The method according to claim 1, characterized in that, After obtaining the target intermediate roll profile curve, the method further includes: The roll profile curve of the target intermediate roll is evaluated based on the crown variation law, which is used to characterize the relationship between the crown and the width of the strip.

4. The method according to claim 3, characterized in that, The evaluation of the target intermediate roll profile curve based on the convexity variation law includes: Determine the appearance of the target intermediate roll profile curve under no-load conditions; Based on the crown variation law and the performance of the target intermediate roll shape curve under no-load conditions, the crown adjustment range and inter-roller contact pressure under loaded conditions are calculated by finite element simulation. The roll profile curve of the target intermediate roll is evaluated based on the convexity adjustment range and the inter-roller contact pressure.

5. A design device for the shape of an intermediate roller, characterized in that, The device includes: The determining unit is used to determine the actual roll shift limit position change curve of the target unit based on the strip roll shifting process distribution law of at least one width of the target unit, wherein the target unit is any one of the rolling mills; The acquisition unit is used to acquire the initial intermediate roll profile curve, optimize the initial intermediate roll profile curve based on the actual roll deviation limit position change curve, and obtain the target intermediate roll profile curve. The step of determining the actual roll shifting limit position variation curve of the target unit based on the strip roll shifting process distribution law of at least one width of the target unit includes: Draw a box plot of the strip roll shifting process corresponding to at least one width of the target unit, and determine the distribution law of the strip roll shifting process based on the box plot of each strip roll shifting process. Based on the process distribution law of each strip steel roll shifting roll, the limit position of the strip steel roll shifting roll is determined, and the actual roll shifting roll limit position change curve of the target unit is generated. The step of optimizing the initial intermediate roll profile curve based on the actual roll deviation limit position change curve to obtain the target intermediate roll profile curve includes: Determine the convexity range in the actual roller limit position change curve; Based on the curve design of CVC roll shape and roll diameter difference, a reasonable roll diameter difference design principle is selected, and the initial intermediate roll shape curve is optimized through the convexity range to obtain the target intermediate roll shape curve.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores at least one piece of program code, which is loaded and executed by a processor to perform the operations performed by the intermediate roll profile design method as described in any one of claims 1 to 4.

7. An electronic device, characterized in that, The electronic device includes one or more processors and one or more memories, wherein at least one piece of program code is stored in the one or more memories, and the at least one piece of program code is loaded and executed by the one or more processors to perform the operations performed by the intermediate roller shape design method as described in any one of claims 1 to 4.

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