Rolling width compensation self-adjustment method and related device
By defining a width compensation range based on the width allowance of the finishing mill during the rolling process and automatically adjusting the roughing mill model, the problem of relying on manual labor for rolling width compensation is solved, realizing intelligent control of the rolling process and improving the accuracy and consistency of the finished product width.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING SHOUGANG CO LTD
- Filing Date
- 2023-10-26
- Publication Date
- 2026-06-05
Smart Images
Figure CN117531844B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of adaptive rolling, and more particularly to a width compensation self-adjustment method and related equipment for rolling. Background Technology
[0002] When changing slab specifications or steel grades, the width spread of the finishing mill often deviates significantly. Due to the characteristics of hot continuous rolling, the adaptive technology of finishing mill is relatively lagging behind, which easily leads to the phenomenon of overall narrow width of the finished product when changing slab specifications or steel grades. Although the width spread calculation deviation of finishing mill can be compensated by increasing width compensation, the impact on the width of the finished product is still significant due to the difference in the skill level of the roughing mill operators. The width compensation adjustment in the rolling process still relies too much on the skill level of the roughing mill operators and is not intelligent enough. Summary of the Invention
[0003] In view of the above problems, the present invention provides a self-adjusting method and related equipment for width compensation in rolling, the main purpose of which is to solve the problem that the width compensation adjustment in rolling is too dependent on manual labor and not intelligent enough.
[0004] To solve at least one of the above-mentioned technical problems, in a first aspect, the present invention provides a width compensation self-adjustment method for rolling, the method comprising:
[0005] The upper and lower limits of the width allowance are determined based on the width allowance of the reference slab rolled by the finishing mill.
[0006] The lower limit of width compensation is determined based on the aforementioned upper limit of width margin.
[0007] The upper limit of width compensation is determined based on the aforementioned lower limit of width margin.
[0008] The width compensation of the roughing pre-calculation model is adjusted based on the aforementioned upper and lower limits of width compensation.
[0009] Optionally, the aforementioned width allowance is the difference between the actual measured width of the finishing mill and the order width.
[0010] Optionally, the determination of the lower limit of width compensation based on the upper limit of the width margin includes:
[0011] The lower limit of width compensation is calculated using the following formula based on the aforementioned upper limit of width margin and the aforementioned order width. :
[0012]
[0013] In the above formula, N represents the total number of rolling sections in the finishing mill. The width of the target rolling section collected by the aforementioned finishing mill.
[0014] Optionally, the determination of the upper limit of width compensation based on the lower limit of the aforementioned width margin includes:
[0015] The upper limit of width compensation is calculated using the following formula based on the aforementioned lower limit of width margin and the aforementioned order width. :
[0016]
[0017] In the above formula, N represents the total number of rolling sections in the finishing mill. The width of the target rolling section collected by the aforementioned finishing mill.
[0018] Optionally, the above methods also include:
[0019] Save the above-mentioned upper limit and lower limit of width compensation to the roughing and finishing mill shared data file.
[0020] Optionally, the above methods also include:
[0021] When the finishing mill model is invoked, the upper limit of the width compensation and the lower limit of the width compensation are obtained from the aforementioned roughing and finishing mill shared data file.
[0022] Optionally, the above methods also include:
[0023] When the steel grade and process parameters of the target slab rolled by the roughing mill are consistent, the roughing model is modified based on the above-mentioned upper limit of width compensation and the above-mentioned lower limit of width compensation.
[0024] Secondly, embodiments of the present invention also provide a width compensation self-adjusting device for rolling, comprising:
[0025] The specification unit is used to specify the upper and lower limits of the width allowance based on the width allowance of the reference slab rolled by the finishing mill.
[0026] The first determining unit is used to determine the lower limit of width compensation based on the aforementioned upper limit of width margin.
[0027] The second determining unit is used to determine the upper limit of width compensation based on the aforementioned lower limit of width margin.
[0028] The adjustment unit is used to adjust the width compensation of the roughing pre-calculation model based on the aforementioned upper and lower limits of width compensation.
[0029] To achieve the above objectives, according to a third aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium comprising a stored program, wherein, when the program is executed by a processor, the steps of the above-described rolling width compensation self-adjustment method are implemented.
[0030] To achieve the above objectives, according to a fourth aspect of the present invention, an electronic device is provided, comprising at least one processor and at least one memory connected to the processor; wherein the processor is configured to invoke program instructions in the memory to execute the steps of the above-described rolling width compensation self-adjustment method.
[0031] By employing the above technical solutions, the self-adjusting method and related equipment for width compensation in rolling provided by this invention address the problem of excessive reliance on manual labor and insufficient intelligence in width compensation adjustment during rolling. This invention establishes an upper and lower limit for the width allowance based on the width allowance of a reference slab rolled by a finishing mill; determines the lower limit for width compensation based on the upper limit; determines the upper limit for width compensation based on the lower limit; and adjusts the width compensation of the roughing pre-calculation model based on the upper and lower limits. In the above scheme, due to the process characteristics of hot continuous rolling, the adaptive finishing rolling is relatively lagging, which can easily cause the finished product width to be narrow when changing steel grades or specifications. However, the roughing rolling model is different from the finishing rolling model. The finishing rolling model in this application embodiment only needs to roll one piece of steel. After the model is adaptively learned and corrected, the corrected data is synchronized to the roughing rolling model. The roughing rolling model is adaptively widened based on the width determined by the finishing rolling model. In the roughing rolling step, the width compensation is added to make up for the deviation in the subsequent finishing rolling width calculation. As a result, the rolling accuracy of the next piece of steel will be greatly improved. This application embodiment uses the method of roughing rolling width pre-compensation and finishing rolling width allowance adaptation to automatically calculate the width compensation correction amount without the need for manual intervention by the operator. It can correct the width compensation in real time and efficiently, thereby controlling the target width of roughing rolling and the width of the finished product of finishing rolling.
[0032] Accordingly, the rolling width compensation self-adjusting device, equipment, and computer-readable storage medium provided in the embodiments of the present invention also have the above-mentioned technical effects.
[0033] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description
[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:
[0035] Figure 1 A schematic flowchart of a width compensation self-adjustment method for rolling provided by an embodiment of the present invention is shown;
[0036] Figure 2 A schematic block diagram of a width compensation self-adjusting device for rolling provided in an embodiment of the present invention is shown;
[0037] Figure 3 This diagram illustrates a schematic block diagram of a rolled width compensation self-adjusting electronic device provided in an embodiment of the present invention. Detailed Implementation
[0038] Exemplary embodiments of the invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0039] To address the issue that width compensation adjustment in rolling relies too heavily on manual labor and lacks intelligence, this invention provides a self-adjusting method for width compensation in rolling, such as... Figure 1 As shown, the method includes:
[0040] S101. Based on the width allowance of the reference slab rolled by the finishing mill, determine the upper limit and lower limit of the width allowance.
[0041] The steps in S101 above also include S1011.
[0042] S1011. In one embodiment, the width allowance is the difference between the measured width of the finishing mill and the order width.
[0043] For example, in the embodiments of this application, the measured width is collected in real time during the rolling process of the finishing mill, and the deviation of the measured width relative to the order width is calculated, that is, the aforementioned width allowance.
[0044] S102. Determine the lower limit of width compensation based on the above-mentioned upper limit of width margin;
[0045] The above-mentioned step S102 also includes S1021.
[0046] S1021 In one embodiment, determining the lower limit of width compensation based on the upper limit of the width margin includes:
[0047] The lower limit of width compensation is calculated using the following formula based on the aforementioned upper limit of width margin and the aforementioned order width. :
[0048]
[0049] In the above formula, N represents the total number of rolling sections in the finishing mill. The width of the target rolling section collected by the aforementioned finishing mill.
[0050] For example, the embodiments of this application determine the lower limit of width compensation based on the above formula. It can be understood that the upper limit of the above width compensation is... It is flexibly adjusted based on the upper limit of the width allowance and the above-mentioned order width. The lower limit of the width allowance is the maximum allowable deviation value set by the staff based on the order width.
[0051] S103. Determine the upper limit of width compensation based on the lower limit of the aforementioned width margin.
[0052] The above-mentioned step S103 also includes S1031.
[0053] S1031. In one embodiment, determining the upper limit of width compensation based on the lower limit of the width margin includes:
[0054] The upper limit of width compensation is calculated using the following formula based on the aforementioned lower limit of width margin and the aforementioned order width. :
[0055]
[0056] In the above formula, N represents the total number of rolling sections in the finishing mill. The width of the target rolling section collected by the aforementioned finishing mill.
[0057] For example, the embodiments of this application determine the upper limit of width compensation based on the above formula. It can be understood that the above upper limit of width compensation... It is flexibly adjusted based on the lower limit of the width allowance and the above-mentioned order width. The lower limit of the width allowance is the minimum allowable deviation value set by the staff based on the order width.
[0058] The width compensation mechanism is determined based on the above two formulas using the width margin measured in real time. The determined width compensation range is used to compensate for the width expansion calculation deviation in the subsequent rough rolling.
[0059] S104. Adjust the width compensation of the roughing model based on the above-mentioned upper limit and lower limit of width compensation.
[0060] The steps in S104 above also include S1041, S1042 and S1043.
[0061] S1041. In one embodiment, the above method further includes:
[0062] Save the above-mentioned upper limit and lower limit of width compensation to the roughing and finishing mill shared data file.
[0063] For example, in this application embodiment, the calculated width compensation interval is saved to the roughing and finishing mill shared data file, and written to the genetic configuration file through DM (Data Mart, data processing center) to facilitate subsequent data synchronization and retrieval.
[0064] S1042. In one embodiment, the above method further includes:
[0065] When the finishing mill model is invoked, the upper limit of the width compensation and the lower limit of the width compensation are obtained from the aforementioned roughing and finishing mill shared data file.
[0066] For example, each time the finishing mill model of this application is triggered during rolling, it reads the aforementioned shared data file and writes the latest acquired width compensation range into the roughing and finishing mill shared data file (dataRMFMshare). The aforementioned finishing mill model can calculate the width compensation correction amount in real time, efficiently and accurately correcting the width compensation, and can even perform width compensation correction after exiting the furnace.
[0067] S1043. In one embodiment, the above method further includes:
[0068] When the steel grade and process parameters of the target slab rolled by the roughing mill are consistent, the roughing model is modified based on the above-mentioned upper limit of width compensation and the above-mentioned lower limit of width compensation.
[0069] It is important to note that before writing the newly acquired width compensation range into the roughing and finishing mill shared data file (dataRMFMshare), it is necessary to verify that the steel grade and on-site process parameters are consistent. This is to prevent the corrected upper and lower limits of width compensation from being inapplicable in the event of inconsistencies between the steel grade and process parameters, which could lead to rolling deviations. Furthermore, the roughing mill model can be pre-set with width compensation individually based on the characteristics of different steel grades, avoiding the loss of width compensation due to model restarts. The width allowance transmission path for roughing and finishing mills has been established, and an adaptive control system for width compensation in roughing and finishing mills has been created.
[0070] For example, when the roughing model reads the shared data file dataRMFMshare, the latest upper and lower limits of width compensation are used to correct the roughing model, thereby achieving the effect of correcting the width of the finished finishing product.
[0071] For example, in the initial rolling process prior to the above scheme, the embodiments of this application establish steel races based on the different C and Mn contents in the chemical composition of the slab;
[0072] Different steel types and thickness / width specifications are stratified, and different initial width compensations are pre-configured. The aforementioned initial width compensations are determined through on-site production big data statistics, which are based on human experience and historical data.
[0073] For example, the roughing model reads a predefined initial width compensation based on the steel race, thickness, and width set mentioned above, for roughing target width control.
[0074] W 初始宽度补偿 =
[0075] Furthermore, the following illustrates another way in which the embodiments of this application are implemented:
[0076] 1. Determine the steel class based on the current slab steel grade, read the thickness, width, width tolerance and finishing mill width spread calculation values from the database, and pre-calculate the initial width compensation for roughing mill;
[0077]
[0078] Table 1 Original Data of Slab
[0079] 2. Based on the target width of the finishing mill, width tolerance, width compensation pre-compensation, and the calculated width expansion of the finishing mill, the target width of the roughing mill is determined to be 1250 + 7.5 - 8.2 = 1249.3 mm, which is converted to a hot-rolled width of 1270.53 mm.
[0080] 3. Real-time acquisition of the width of the finished precision-rolled product; calculation of the average width over the entire length after acquisition.
[0081]
[0082] Table 2 shows the first 5 data points collected.
[0083] The average length and width is 1260.8 mm.
[0084] 4. Calculate the finished width allowance based on the average width of the entire length: 1260.8 - 1250 = 10.8mm. Set the upper limit of the width allowance to 10.5mm and the lower limit to 8mm. Substitute these values into the tolerance calculation and calculate the required correction W_flat = 0.3mm.
[0085]
[0086] 5. The calculated upper and lower limits of width compensation are stored in the finishing mill model calculation results and written to the genetic configuration file via the data processing center (DM);
[0087] 6. Each time the finishing mill model is triggered, it reads the genetic configuration file and writes the latest width compensation upper limit and width compensation lower limit into the roughing and finishing mill shared data file dataRMFMshare. Before writing to this file, it is necessary to determine whether the steel grade is consistent and whether the on-site process parameters are consistent.
[0088] 7. The roughing model reads data from the shared data file dataRMFMshare and uses the latest upper and lower limits of width compensation to correct the target width of the roughing mill, thereby achieving the purpose of correcting the width of the finished finishing mill.
[0089] By means of the above technical solution, the width compensation self-adjustment method for rolling provided by the present invention addresses the problem that width compensation adjustment in rolling relies too much on manual labor and is not intelligent enough. The present invention establishes an upper limit and a lower limit for the width allowance based on the width allowance of the reference slab rolled by the finishing mill; determines the lower limit for width compensation based on the upper limit of the width allowance; determines the upper limit for width compensation based on the lower limit of the width allowance; and adjusts the width compensation of the roughing pre-calculation model based on the upper limit and the lower limit of width compensation. In the above scheme, due to the process characteristics of hot continuous rolling, the adaptive finishing rolling is relatively lagging, which can easily cause the finished product width to be narrow when changing steel grades or specifications. However, the roughing rolling model is different from the finishing rolling model. The finishing rolling model in this application embodiment only needs to roll one piece of steel. After the model is adaptively learned and corrected, the corrected data is synchronized to the roughing rolling model. The roughing rolling model is adaptively widened based on the width determined by the finishing rolling model. In the roughing rolling step, the width compensation is added to make up for the deviation in the subsequent finishing rolling width calculation. As a result, the rolling accuracy of the next piece of steel will be greatly improved. This application embodiment uses the method of roughing rolling width pre-compensation and finishing rolling width allowance adaptation to automatically calculate the width compensation correction amount without the need for manual intervention by the operator. It can correct the width compensation in real time and efficiently, thereby controlling the target width of roughing rolling and the width of the finished product of finishing rolling.
[0090] In summary, the embodiments of this application liberate the labor force of roughing rolling personnel and significantly reduce their workload; they completely replace the manual intervention of roughing rolling personnel in width compensation, promote the intelligent control of hot rolling width, and lay a solid foundation for further development of a "lights-out" factory; they can freely switch the control range of finishing rolling allowance according to the order width tolerance, enabling real-time and efficient control, while avoiding the problem of being unable to intervene in width compensation after the slab exits the furnace.
[0091] Furthermore, as a response to the above Figure 1 In addition to the implementation of the method shown, this embodiment of the invention also provides a width compensation self-adjusting device for rolling, used for the above-mentioned... Figure 1The method shown is implemented accordingly. This device embodiment corresponds to the foregoing method embodiment. For ease of reading, this device embodiment will not repeat the details of the foregoing method embodiment, but it should be clear that the device in this embodiment can implement all the contents of the foregoing method embodiment. Figure 2 As shown, the device includes: a setting unit 21, a first determining unit 22, a second determining unit 23, and an adjusting unit 24, wherein...
[0092] The defining unit 21 is used to define the upper limit and lower limit of the width allowance based on the width allowance of the reference slab rolled by the finishing mill.
[0093] The first determining unit 22 is used to determine the lower limit of width compensation based on the aforementioned upper limit of width margin.
[0094] The second determining unit 23 is used to determine the upper limit of width compensation based on the aforementioned lower limit of width margin.
[0095] The adjustment unit 24 is used to adjust the width compensation of the roughing model based on the aforementioned upper and lower limits of width compensation.
[0096] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and by adjusting kernel parameters, a self-adjusting method for rolling width compensation can be implemented. This solves the problem that rolling width compensation adjustment relies too heavily on manual intervention and lacks intelligence.
[0097] This invention provides a computer-readable storage medium including a stored program that, when executed by a processor, implements the above-described self-adjusting method for width compensation in rolling.
[0098] This invention provides a processor for running a program, wherein the program executes the aforementioned width compensation self-adjustment method for rolling.
[0099] This invention provides an electronic device, which includes at least one processor and at least one memory connected to the processor; wherein the processor is used to call program instructions in the memory to execute the rolling width compensation self-adjustment method as described above.
[0100] This invention provides an electronic device 30, such as... Figure 3 As shown, the electronic device includes at least one processor 301, and at least one memory 302 and bus 303 connected to the processor; wherein, the processor 301 and the memory 302 communicate with each other through the bus 303; the processor 301 is used to call program instructions in the memory to execute the above-mentioned rolling width compensation self-adjustment method.
[0101] The smart electronic devices mentioned in this article can be PCs, tablets, mobile phones, etc.
[0102] This application also provides a computer program product that, when executed on a process management electronic device, is suitable for executing a program that initializes the above-described width compensation self-adjustment method steps for rolling.
[0103] It should be noted that the descriptions of each embodiment in the above embodiments have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0104] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.
[0105] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the flowchart illustrations. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0106] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0107] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0108] This application also provides a computer program product, which includes computer software instructions that, when executed on a processing device, cause the processing device to perform actions such as... Figure 1 The control flow of the memory in the corresponding embodiment.
[0109] A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a server or data center that integrates one or more available media. The available medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).
[0110] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0111] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.
[0112] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0113] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.
[0114] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.
[0115] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A self-adjusting method for width compensation in rolling, characterized in that, include: The upper and lower limits of the width allowance are determined based on the width allowance of the reference slab rolled by the finishing mill. The lower limit of width compensation is determined based on the upper limit of the width margin. The upper limit of width compensation is determined based on the lower limit of the width margin. The width compensation of the roughing pre-calculation model is adjusted based on the upper and lower limits of the width compensation.
2. The method according to claim 1, characterized in that, The width allowance is the difference between the actual measured width of the finishing mill and the order width.
3. The method according to claim 2, characterized in that, The step of determining the lower limit of width compensation based on the upper limit of the width margin includes: The lower limit of width compensation is calculated based on the upper limit of width margin and the order width using the following formula. : In the above formula, N is the total number of rolling sections of the finishing mill. W represents the width of the target rolling section acquired by the finishing mill. 订单宽度 For order width, W 宽度余量上限 This represents the upper limit of the width allowance.
4. The method according to claim 2, characterized in that, The determination of the upper limit of width compensation based on the lower limit of the width margin includes: The upper limit of width compensation is calculated using the following formula based on the lower limit of width margin and the order width. : In the above formula, N is the total number of rolling sections of the finishing mill. W represents the width of the target rolling segment acquired by the finishing mill. 订单宽度 For order width, W 宽度余量下限 This is the lower limit of the width allowance.
5. The method according to claim 1, characterized in that, Also includes: Save the upper limit of width compensation and the lower limit of width compensation to the roughing and finishing mill shared data file.
6. The method according to claim 5, characterized in that, Also includes: When the finishing mill model is invoked, the upper limit of width compensation and the lower limit of width compensation are obtained from the roughing and finishing mill shared data file.
7. The method according to claim 6, characterized in that, Also includes: When the steel grade and process parameters of the target slab rolled by the roughing mill are consistent, the roughing model is modified based on the upper limit of the width compensation and the lower limit of the width compensation.
8. A width compensation self-adjusting device for rolling, used to perform a width compensation self-adjusting method for rolling, characterized in that, include: The specification unit is used to specify the upper and lower limits of the width allowance based on the width allowance of the reference slab rolled by the finishing mill. The first determining unit is used to determine the lower limit of width compensation based on the upper limit of the width margin. The second determining unit is used to determine the upper limit of width compensation based on the lower limit of the width margin. An adjustment unit is used to adjust the width compensation of the roughing pre-calculation model based on the upper and lower limits of the width compensation.
9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed by a processor, it implements the width compensation self-adjustment method for rolling as described in any one of claims 1 to 7.
10. An electronic device, characterized in that, The electronic device includes at least one processor and at least one memory connected to the processor; wherein the processor is configured to call program instructions in the memory to execute the width compensation self-adjustment method for rolling as described in any one of claims 1 to 7.