Endless rolling plate shape control method, device, equipment and medium

Abstract

The invention provides an endless rolling plate shape control method, device and equipment and a medium, and relates to the technical field of endless rolling. The method comprises the steps that the target moment when a roller rack completes dynamic specification changing and the roller rotating speed are obtained; based on the target moment, determining a roller shifting time sequence of a roller; based on the rotating speed of the roller, the roller shifting speed of the roller is determined; and on the basis of the roll shifting time sequence and the roll shifting speed, online roll shifting is conducted in the endless rolling process, and strip steel of a preset plate shape is obtained. According to the endless rolling plate shape control method, device and equipment and the medium, the plate shape control capacity of an endless rolling production line can be improved, and the production stability is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of headless rolling, and in particular to a headless rolling plate shape control method, device, equipment and medium. Background Art

[0002] The difference between the thin slab headless rolling line and the traditional hot rolling line is that the strip steel and the roll are always in contact, and the rolling speed is lower than that of the hot rolling line, which causes the continuous accumulation of roll thermal expansion. In addition, the rolls used in the headless rolling line are all made of high-speed steel, and the roll wear is small. Therefore, as the rolling progresses, the ability to control the shape of the finished rolling gradually weakens.

[0003] In the early stage of the headless rolling production line, the initial roll shape of the rolls was "flat roll + negative convexity". Due to the mismatch of thermal expansion and wear of the rolls, the roll gap convexity before and after the roll period was quite different, which did not match the required plate shape control ability, causing the bending roll force to be used to the limit. There was still a large convexity of the strip in the early stage and a small convexity of the strip in the later stage. The quality of some rolls in the later stage was degraded due to the reverse warping of the plate profile. In other words, the current plate shape control ability of the headless rolling production line is weak and the production stability is poor. Summary of the invention

[0004] The present application provides a headless rolling plate shape control method, device, equipment and medium, which are used to solve the defects of weak plate shape control ability and poor production stability of the headless rolling production line in the prior art, improve the plate shape control ability of the headless rolling production line, and ensure production stability.

[0005] In a first aspect, the present application provides a headless rolling plate shape control method, comprising:

[0006] Obtain the target time and roll speed for the roll stand to complete dynamic specification change;

[0007] Based on the target time, determining the roll shifting timing of the roll; and based on the roll speed, determining the roll shifting speed of the roll;

[0008] Based on the roll shifting timing and the roll shifting speed, online roll shifting is performed during the endless rolling process to obtain a strip steel with a preset plate shape.

[0009] Optionally, the headless rolling plate shape control method further includes:

[0010] Obtain the spacing between the roll stands and the speed of the strip at the roll stand exit;

[0011] Determining the roll shifting timing of the roller based on the target time includes:

[0012] The roller shifting timing is determined based on the target time, the spacing and the speed.

[0013] Optionally, determining the roller shifting timing based on the target time, the spacing and the speed includes:

[0014] Determine a target duration based on the distance and the speed;

[0015] The time after the target time and separated by the target time length is taken as the roller shifting timing.

[0016] Optionally, the headless rolling plate shape control method further includes:

[0017] Determine the roller speed coefficient;

[0018] The step of determining the roller shifting speed of the roller based on the roller rotation speed comprises:

[0019] The product of the roll shifting speed coefficient and the roll rotation speed is taken as the roll shifting speed.

[0020] Optionally, determining the roller shifting speed coefficient includes:

[0021] Determine a first threshold value based on the axial force of the roller shifting, and determine a second threshold value based on the equipment performance of the control system of the roller shifting;

[0022] The roller shifting speed coefficient is determined based on the first threshold and the second threshold.

[0023] Optionally, the headless rolling plate shape control method further includes:

[0024] Determine a roll shifting position of the roll, and determine a roll shifting step threshold of the roll based on a first target attribute of the roll and a second target attribute of the steel strip;

[0025] The method of performing online roll shifting in the endless rolling process based on the roll shifting timing and the roll shifting speed includes:

[0026] Based on the roll shifting position, the roll shifting step threshold, the roll shifting speed and the roll shifting timing, online roll shifting is performed during the endless rolling process.

[0027] Optionally, the first target attribute includes roll shape and roll stand; the second target attribute includes strip type and strip shape;

[0028] The step of determining the roller shifting step length threshold of the roller based on the first target attribute of the roller and the second target attribute of the strip steel comprises:

[0029] Determining a target step length threshold corresponding to the roll shape, the roll stand, the type of the strip steel, and the shape of the strip steel from a plurality of preset step length thresholds;

[0030] The target step length threshold is used as the roller shifting step length threshold.

[0031] In a second aspect, the present application also provides a headless rolling plate shape control device, comprising:

[0032] An acquisition module is used to acquire the target time when the roll stand completes the dynamic specification change and the roll speed;

[0033] A determination module, used to determine the roll shifting timing of the roll based on the target time; and determine the roll shifting speed of the roll based on the roll rotation speed;

[0034] A control module is used to perform online roll shifting during the headless rolling process based on the roll shifting timing and the roll shifting speed to obtain a strip steel with a preset plate shape.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] The headless rolling plate shape control method, device, equipment and medium provided in the present application determine the roll shifting timing and roll shifting speed, and perform online roll shifting during the headless rolling process to obtain a strip with a preset plate shape, thereby improving the plate shape control capability before and after the lower roll in the long rolling period, reducing the occurrence of plate profile warping defects in the late rolling period, improving the strip production quality, and ensuring the production stability of the headless rolling production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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.

[0040] Figure 1 is a schematic diagram of a roller profile with variable crown in axial displacement;

[0041] Figure 2 It is a schematic flow chart of the headless rolling plate shape control method provided in the embodiment of the present application;

[0042] Figure 3 It is a structural schematic diagram of a headless rolling plate shape control device provided in an embodiment of the present application;

[0043] Figure 4 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0044] Traditional hot rolling production lines use axial displacement variable crown roller shape to solve the plate shape control problem. Figure 1 It is a schematic diagram of the axial displacement variable crown roller shape provided in the embodiment of the present application. The roller shifting timing of the hot rolling production line is the gap between two pieces of steel, which will not affect the production stability. The cold rolling production line is usually a six-roll mill, and the plate shape is adjusted by shifting the intermediate roller. For the headless production line, the roller shifting method is online roller shifting. The rolling mill is loaded during the shifting process, and the shifting moment is in the process of dynamically changing specifications. The axial displacement of the working roll with variable crown roller shape will generate a large axial force, which has a greater impact on production stability.

[0045] Aiming at the problem that the plate shape control capabilities required before and after the rolls of a headless production line for thin slabs are greatly different and the axial displacement variable convex roller shape shifting affects the production stability, the present application proposes a new control method for the axial displacement variable convex roller shape of a headless production line, aiming to use the axial displacement variable convex roller shape in the headless production line to solve the problem that the plate shape control capabilities required before and after the rolls of the headless production line are greatly different.

[0046] 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.

[0047] Figure 2 Schematic diagram of the process flow of the headless rolling plate shape control method provided in the embodiment of the present application. Figure 2 The embodiment of the present application provides a method for controlling the shape of a headless rolling mill, the execution subject of which 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:

[0048] Step 210, obtaining the target time when the roll stand completes the dynamic specification change and the roll speed;

[0049] Step 220: determining the roll shifting timing of the roll based on the target time; and determining the roll shifting speed of the roll based on the roll speed;

[0050] Step 230: Based on the roll shifting timing and the roll shifting speed, online roll shifting is performed during the endless rolling process to obtain a strip steel with a preset plate shape.

[0051] In step 210, the controller may obtain the target time when the roll stand completes the dynamic specification change.

[0052] In step 220, the controller may determine the roll shifting timing of the rolls by the target time. Specifically, the roll shifting timing may be the time after the roll stand completes the dynamic specification change. The controller may also determine the roll shifting speed of the rolls based on the roll speed.

[0053] In step 230, after determining the online roll shifting timing and roll shifting speed, the controller can control the online roll shifting during the endless rolling process to obtain a strip steel with a preset plate shape.

[0054] The headless rolling plate shape control method provided in the embodiment of the present application determines the roll shifting timing and roll shifting speed, and performs online roll shifting during the headless rolling process to obtain a strip with a preset plate shape, thereby improving the plate shape control capability before and after the lower roll in the long rolling period, reducing the occurrence of the plate profile warping defect in the later stage of the roll, improving the strip production quality, and ensuring the production stability of the headless rolling production line.

[0055] In one embodiment, the headless rolling plate shape control method also includes: obtaining the spacing between each roll stand and the speed of the strip at the exit of the current roll stand; determining the roll shifting timing based on the target time, including: determining the roll shifting timing based on the target time, spacing and speed.

[0056] Further, in one embodiment, the roller shifting timing is determined based on the target moment, spacing and speed, including: determining the target duration based on the spacing and speed; and taking the moment after the target moment and separated by the target duration as the roller shifting timing.

[0057] Specifically, the roll shifting sequence can be determined as T seconds after the roll stand completes FGC (dynamic specification change), that is, the target time, where T is the target duration. The calculation method of T is as follows:

[0058] T=S / V

[0059] Among them, S represents the spacing between the roll stands, and V represents the speed of the strip at the exit of the roll stand.

[0060] Specifically, the time interval from the completion of FGC of the strip in the current rack to the start of FGC in the next rack can also be set to T seconds.

[0061] The headless rolling plate shape control method provided in the embodiment of the present application determines the target duration based on the spacing and speed, and uses the moment after the target moment and the interval of the target duration as the roll shifting timing, so as to avoid roll shifting when the roll gap, tension, speed and other factors are unstable during the FGC process, reduce the risk of roll shifting, and improve the rolling stability of the headless production line.

[0062] In one embodiment, the headless rolling plate shape control method also includes: determining a roll shifting speed coefficient; determining the roll shifting speed of the roll based on the roll rotation speed, including: taking the product of the roll shifting speed coefficient and the roll rotation speed as the roll shifting speed.

[0063] The calculation formula of roller speed is as follows:

[0064] V sft =kv

[0065] Among them, V sft It indicates the roller shifting speed, in mm / s; k indicates the roller shifting speed coefficient; v indicates the roller rotation speed, in mm / s.

[0066] The headless rolling plate shape control method provided in the embodiment of the present application obtains the roll shifting speed by multiplying the roll shifting speed coefficient with the roll speed, thereby performing online roll shifting during the headless rolling process to obtain a strip with a preset plate shape, thereby improving the plate shape control capability before and after the lower roll in the long rolling period, reducing the occurrence of the plate profile warping defect in the later stage of the roll, improving the strip production quality, and ensuring the production stability of the headless rolling production line.

[0067] In one embodiment, determining the roller shifting speed coefficient includes: determining a first threshold value based on the roller shifting axial force, and determining a second threshold value based on the equipment performance of the roller shifting control system; and determining the roller shifting speed coefficient based on the first threshold value and the second threshold value.

[0068] In order to ensure production stability during roll shifting, the roll shifting speed coefficient k needs to be adjusted to limit the roll shifting speed, reduce the roll shifting speed, and reduce the axial force during the roll shifting process. The upper and lower limits of the roll shifting speed coefficient k can be considered, among which the upper limit, i.e. the first threshold, needs to be determined based on the actual axial force of the shifting and production stability. The lower limit, i.e. the second threshold, needs to be determined in combination with the equipment performance of the control system of the roll shifting, i.e. the equipment control capability. The control system of the roll shifting is controlled by a hydraulic valve, and the roll shifting speed coefficient needs to avoid the zero drift of the hydraulic valve. The roll shifting speed coefficient is between the first threshold and the second threshold.

[0069] The headless rolling plate shape control method provided in the embodiment of the present application determines the roll shifting speed system through a first threshold value determined by the axial force of the roll shifting and a second threshold value determined by the equipment performance of the control system of the roll shifting, thereby determining the roll shifting speed, thereby limiting the roll shifting speed, reducing the roll shifting speed, reducing the axial force during the roll shifting process, and ensuring production stability.

[0070] In one embodiment, the headless rolling plate shape control method also includes: determining the roll shifting position of the rolling roll, and determining the roll shifting step threshold of the rolling roll based on the first target attribute of the rolling roll and the second target attribute of the strip; performing online roll shifting during the headless rolling process based on the roll shifting timing and the roll shifting speed, including: performing online roll shifting during the headless rolling process based on the roll shifting position, the roll shifting step threshold, the roll shifting speed and the roll shifting timing.

[0071] Further, in one embodiment, the first target attribute includes the roll shape and the roll stand; the second target attribute includes the strip type and the strip shape; based on the first target attribute of the roll and the second target attribute of the strip, the roll shifting step threshold of the roll is determined, including: determining the target step threshold corresponding to the roll shape, the roll stand, the strip type and the strip shape from multiple preset step thresholds; and using the target step threshold as the roll shifting step threshold.

[0072] The GSM module of the controller can calculate the roll gap convexity and corresponding roll shifting position required for the axial displacement variable convexity stand of the headless rolling production line through the SSU setting program, and can determine the roll shifting step threshold of the roll based on the first target attribute of the roll and the second target attribute of the strip, so as to perform online roll shifting during the headless rolling process based on the roll shifting position, roll shifting step threshold, roll shifting speed and roll shifting timing. Specifically, the strip shape may include the strip thickness and the strip width. The roll shifting step threshold is the maximum roll shifting step. The controller can determine a step threshold configuration table, in which different step thresholds corresponding to different roll shapes, roll stands, strip types and strip shapes are different. By retrieving the step threshold configuration table, the target step threshold corresponding to the roll shape, roll stand, strip type and strip shape can be determined from the preset multiple step thresholds.

[0073] The headless rolling plate shape control method provided in the embodiment of the present application determines the roll shifting step threshold of the rolling roller through the first target attribute of the rolling roller and the second target attribute of the strip, and performs online roll shifting during the headless rolling process based on the roll shifting position, roll shifting step threshold, roll shifting speed and roll shifting timing, thereby improving the plate shape control capability before and after the lower roll in the long rolling period, reducing the occurrence of the plate profile warping defect in the later stage of the roll, improving the production quality of the strip, and ensuring the production stability of the headless rolling production line.

[0074] Based on the description of the above embodiments, this application also provides a practical application example of the headless rolling plate shape control method. In the actual application of the headless production line, the step length of the roll shifting is limited according to the thickness of the strip. If the strip thickness is ≥1.7mm, the step length threshold of the roll shifting is 10mm. As the thickness decreases, the maximum step length of the roll shifting can be reduced to 5mm. By adjusting the roll shifting timing to 10s after the end of FGC, the stability of production during the online roll shifting process can be guaranteed.

[0075] The headless rolling plate shape control device provided in the present application is described below. The headless rolling plate shape control device described below and the headless rolling plate shape control method described above can be referred to each other.

[0076] Figure 3 Schematic diagram of the structure of the headless rolling plate shape control device provided in the embodiment of the present application. Figure 3 The headless rolling plate shape control device provided in the embodiment of the present application may include:

[0077] An acquisition module 310 is used to acquire the target time when the roll stand completes the dynamic specification change and the roll speed;

[0078] A determination module 320, for determining a roll shifting timing of the roll based on the target time; and determining a roll shifting speed of the roll based on the roll rotation speed;

[0079] The control module 330 is used to perform online roll shifting during the endless rolling process based on the roll shifting timing and the roll shifting speed to obtain a strip steel with a preset plate shape.

[0080] The headless rolling plate shape control device provided in the embodiment of the present application determines the roll shifting timing and roll shifting speed, and performs online roll shifting during the headless rolling process to obtain a strip with a preset plate shape, thereby improving the plate shape control capability before and after the lower roll in the long rolling period, reducing the occurrence of plate profile warping defects in the late rolling period, improving the strip production quality, and ensuring the production stability of the headless rolling production line.

[0081] Specifically, the above-mentioned headless rolling plate shape control device provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the above-mentioned execution subject is the controller, and can achieve the same technical effect. The parts and beneficial effects in this embodiment that are the same as those in the method embodiment will not be described in detail here.

[0082] Figure 4 Schematic diagram of the structure of the electronic device provided in the embodiment of the present application. Figure 4 As shown, the electronic device may include: a processor 410, a communication interface 420, a memory 430 and a communication bus 440, wherein the processor 410, the communication interface 420 and the memory 430 communicate with each other through the communication bus 440. The processor 410 may call the logic instructions in the memory 430 to execute the headless rolling plate shape control method, for example, including:

[0083] Obtain the target time and roll speed for the roll stand to complete dynamic specification change;

[0084] Based on the target time, determining the roll shifting timing of the roll; and based on the roll speed, determining the roll shifting speed of the roll;

[0085] Based on the roll shifting timing and the roll shifting speed, online roll shifting is performed during the endless rolling process to obtain a strip steel with a preset plate shape.

[0086] In addition, the logic instructions in the above-mentioned memory 430 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 can be embodied in the form of a software product in essence or in other words, the part that contributes to the prior art or the part of the technical solution. 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: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk.

[0087] 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 headless rolling plate shape control method provided by the above methods, for example, including:

[0088] Obtain the target time and roll speed for the roll stand to complete dynamic specification change;

[0089] Based on the target time, determining the roll shifting timing of the roll; and based on the roll speed, determining the roll shifting speed of the roll;

[0090] Based on the roll shifting timing and the roll shifting speed, online roll shifting is performed during the endless rolling process to obtain a strip steel with a preset plate shape.

[0091] On the other hand, the present application further provides a computer program product, the computer program product includes 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 headless rolling plate shape control method provided by the above methods, for example, including:

[0092] Obtain the target time and roll speed for the roll stand to complete dynamic specification change;

[0093] Based on the target time, determining the roll shifting timing of the roll; and based on the roll speed, determining the roll shifting speed of the roll;

[0094] Based on the roll shifting timing and the roll shifting speed, online roll shifting is performed during the endless rolling process to obtain a strip steel with a preset plate shape.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] "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.

[0100] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0101] 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 controlling the shape of a headless rolling mill, characterized in that: include: Obtain the target time and roll speed for the roll stand to complete dynamic specification change; Based on the target time, determining the roll shifting timing of the rolls; and determining a roll shifting speed of the roll based on the roll rotation speed; Based on the roll shifting timing and the roll shifting speed, online roll shifting is performed during the endless rolling process to obtain a strip steel with a preset plate shape.

2. The headless rolling plate shape control method according to claim 1, characterized in that: Also includes: Obtain the spacing between the roll stands and the speed of the strip at the roll stand exit; Determining the roll shifting timing of the roller based on the target time includes: The roller shifting timing is determined based on the target time, the spacing and the speed.

3. The headless rolling plate shape control method according to claim 2, characterized in that: The step of determining the roller shifting timing based on the target time, the spacing and the speed includes: Determine a target duration based on the distance and the speed; The time after the target time and separated by the target time length is taken as the roller shifting timing.

4. The headless rolling plate shape control method according to claim 1, characterized in that: Also includes: Determine the roller speed coefficient; The step of determining the roller shifting speed of the roller based on the roller rotation speed comprises: The product of the roll shifting speed coefficient and the roll rotation speed is taken as the roll shifting speed.

5. The headless rolling plate shape control method according to claim 4, characterized in that: The step of determining the roller shifting speed coefficient comprises: Determine a first threshold value based on the axial force of the roller shifting, and determine a second threshold value based on the equipment performance of the control system of the roller shifting; The roller shifting speed coefficient is determined based on the first threshold and the second threshold.

6. The headless rolling plate shape control method according to claim 1, characterized in that: Also includes: Determine a roll shifting position of the roll, and determine a roll shifting step threshold of the roll based on a first target attribute of the roll and a second target attribute of the steel strip; The method of performing online roll shifting in the endless rolling process based on the roll shifting timing and the roll shifting speed includes: Based on the roll shifting position, the roll shifting step threshold, the roll shifting speed and the roll shifting timing, online roll shifting is performed during the endless rolling process.

7. The headless rolling plate shape control method according to claim 6, characterized in that: The first target attribute includes the roll shape and the roll stand; the second target attribute includes the strip type and the strip shape; The step of determining the roller shifting step length threshold of the roller based on the first target attribute of the roller and the second target attribute of the strip steel comprises: Determining a target step length threshold corresponding to the roll shape, the roll stand, the type of the strip steel, and the shape of the strip steel from a plurality of preset step length thresholds; The target step length threshold is used as the roller shifting step length threshold.

8. A headless rolling plate shape control device, characterized in that: include: An acquisition module is used to acquire the target time when the roll stand completes the dynamic specification change and the roll speed; A determination module, used for determining a roll shifting timing of the rollers based on the target time; and determining a roll shifting speed of the roll based on the roll rotation speed; A control module is used to perform online roll shifting during the headless rolling process based on the roll shifting timing and the roll shifting speed to obtain a strip steel with a preset plate shape.

9. 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 headless rolling plate shape control method as described in any one of claims 1 to 7 is implemented.

10. 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 headless rolling plate shape control method as described in any one of claims 1 to 7 is implemented.

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