Rolling method, medium and device for a pattern plate

Abstract

The application provides a rolling method, medium and equipment of a pattern plate, wherein the method comprises the following steps: obtaining historical slab data of a historical slab; obtaining target slab data of a target slab; calculating target slab strength of the target slab according to the target slab data, and determining a target steel type of the target slab; calculating a slab weight value of the target slab according to the historical slab data and the target slab data; and determining a rolling parameter of the target slab according to the target slab strength, the target steel type and the slab weight value. The application determines the slab strength of the current slab and the steel type to which the current slab belongs, so that the finishing model can identify and distinguish the actual steel type of the current slab according to the slab strength of the current slab and the steel type of the current slab. The application not only improves the accuracy of the finishing model in identifying the slab steel type and the accuracy of the finishing rolling force setting, but also guarantees the production stability and production efficiency of the rolling production line and improves the quality of the slab.

Description

Technical Field

[0001] This application relates to the field of steel rolling technology, and in particular to a rolling method, medium and equipment for patterned steel plates. Background Technology

[0002] The slabs used in patterned steel plates have complex and diverse compositions. Before rolling, the steel grade names of the slabs are uniformly changed to the same steel grade name. Currently, there are 200 steel grades of slabs used in patterned steel plate rolling. After the steel grade of the slabs is uniformly changed, the finishing rolling model cannot correctly identify and distinguish the actual steel grade of the slab by the steel grade name. This will cause abnormalities in the finishing rolling force setting of slabs of the same steel grade, which will seriously affect the production stability and efficiency of the rolling production line.

[0003] Therefore, how to adopt an effective method to improve the accuracy of identifying and distinguishing slab steel grades, ensure the accuracy of the finishing rolling force setting and the production stability and efficiency of the rolling production line, and improve the slab quality are urgent technical problems to be solved.

[0004] By determining the chemical composition of the current slab, the slab strength and steel class of the current slab can be determined. This allows the finishing rolling model to identify and distinguish the actual steel grade of the current slab based on its strength and steel class. The model then uses rolling parameters corresponding to the actual steel grade to roll the slab. This not only improves the accuracy of the finishing rolling model in identifying the slab steel grade and the precision of the finishing rolling force setting, but also ensures the production stability and efficiency of the rolling production line and improves the quality of the slab. Summary of the Invention

[0005] The purpose of this application is to provide a rolling method, medium, and equipment for patterned steel plates. This application solves the problem that after the steel grade of the slab is standardized, the finishing rolling model cannot correctly identify and distinguish the actual steel grade of the slab by the steel grade name. This application determines the chemical composition of the current slab, and based on the chemical composition, determines the slab strength and the steel grade to which the current slab belongs. This allows the finishing rolling model to identify and distinguish the actual steel grade of the current slab based on the slab strength and the steel grade described in the current slab, and to roll the current slab using rolling parameters corresponding to the actual steel grade. This not only improves the accuracy of the finishing rolling model in identifying the slab steel grade and the precision of the finishing rolling force setting, but also ensures the production stability and efficiency of the rolling production line, and improves the quality of the slab.

[0006] Specifically, this application adopts the following technical solution:

[0007] According to one aspect of the embodiments of this application, a rolling method for patterned steel plate is provided. The method includes: acquiring historical slab data from a slab database, the historical slab data including the chemical composition, slab thickness, slab width, slab temperature, slab strength, steel class, and rolling parameters of the historical slab; acquiring the target chemical composition, target slab thickness, target slab width, and target slab temperature of a target slab; calculating the target slab strength of the target slab based on the target chemical composition, and determining the target steel class of the target slab based on the target slab strength; and further... The target slab is calculated using the historical slab data, the target slab thickness, the target slab width, and the target slab temperature. The slab weight value is used to characterize the matching degree between the target slab and the historical slab. If the historical slab and the target slab are of the same steel class, and the slab strength difference between the target slab and the historical slab is less than a first preset value, and the slab weight value is less than a second preset value, then the rolling parameters of the historical slab are determined as the target rolling parameters of the target slab, and the target slab is rolled according to the target rolling parameters.

[0008] In some embodiments of this application, based on the foregoing scheme, calculating the target slab strength of the target slab according to the target chemical composition includes: calculating the target slab strength of the target slab according to the target chemical composition, wherein the calculation formula for the target slab strength is as follows:

[0009] δ S =A+B×C%+D×Si%+E×Mn%+F×Nb%+G×V%

[0010] Where, δ S The target slab strength is represented by A, B, D, E, F, and G; the curing parameters are represented by C%; the carbon content in the target chemical composition of the target slab is represented by Si%; the silicon content in the target chemical composition of the target slab is represented by Mn%; the manganese content in the target chemical composition of the target slab is represented by Nb%; and the vanadium content in the target chemical composition of the target slab is represented by V%.

[0011] In some embodiments of this application, based on the foregoing scheme, determining the target steel race of the target slab according to the target slab strength includes: if the target slab strength is less than or equal to 350 MPa, then the steel race is 0; if the target slab strength is greater than or equal to 351 MPa and less than or equal to 400 MPa, then the target steel race is 1; if the target slab strength is greater than or equal to 401 MPa and less than or equal to 450 MPa, then the target steel race is 2; if the target slab strength is greater than or equal to 451 MPa and less than or equal to 500 MPa, then the target steel race is 3; if the target slab strength is greater than or equal to 501 MPa and less than or equal to 500 MPa, then the target steel race is 3; if the target slab strength is greater than or equal to 501 MPa and less than or equal to 500 MPa, then the target steel race is 500 MPa. If the target slab strength is 50 MPa, then the target steel race is 4; if the target slab strength is greater than or equal to 551 MPa and less than or equal to 600 MPa, then the target steel race is 5; if the target slab strength is greater than or equal to 601 MPa and less than or equal to 650 MPa, then the target steel race is 6; if the target slab strength is greater than or equal to 651 MPa and less than or equal to 700 MPa, then the target steel race is 7; if the target slab strength is greater than or equal to 701 MPa and less than or equal to 750 MPa, then the target steel race is 8; if the target slab strength is greater than or equal to 751 MPa and less than or equal to 800 MPa, then the target steel race is 9.

[0012] In some embodiments of this application, based on the foregoing scheme, calculating the slab weight value of the target slab according to the historical slab data, the target slab thickness, the target slab width, and the target slab temperature includes: calculating the thickness change, width change, and temperature change of the target slab compared to the historical slabs based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature; and calculating the slab weight value of the target slab based on the thickness change, the width change, and the temperature change. The formula for calculating the slab weight value is as follows:

[0013] Sh=ΔH×Sh H +ΔW×Sh W +ΔT×Sh T

[0014] Where Sh represents the slab weight value of the target slab; ΔH represents the thickness change; ΔW represents the width change; ΔT represents the temperature change; Sh H This represents the thickness weight value corresponding to the thickness change; Sh W This represents the width weight value corresponding to the width change; Sh TThis represents the temperature weight value corresponding to the temperature change.

[0015] In some embodiments of this application, based on the foregoing scheme, the target slab thickness is 4.75 mm and the target slab width is 1050 mm.

[0016] In some embodiments of this application, based on the foregoing scheme, the second preset value is 1.55.

[0017] In some embodiments of this application, based on the aforementioned scheme, the second preset value is 4 tons.

[0018] In some embodiments of this application, based on the foregoing scheme, the method further includes: after the target slab is rolled, the target slab strength and target steel species of the target slab are saved to the slab database through a genetic model.

[0019] In some embodiments of this application, based on the foregoing scheme, the method further includes: if the steel class of the historical slab is different from that of the target slab, or the difference in slab strength between the target slab and the historical slab is greater than or equal to the first preset value, or the slab weight value is greater than or equal to the second preset value, then a new algorithm is used to recalculate the target slab strength and target steel class of the target slab.

[0020] According to one aspect of the present application, a computer-readable storage medium is provided, wherein at least one piece of program code is stored in the computer-readable storage medium, the at least one piece of program code being loaded and executed by a processor to implement the operations performed by the above-described patterned plate rolling method.

[0021] According to one aspect of the present application, an electronic device is provided, including a memory and a processor, the memory storing a computer program, the processor executing the computer program to perform the operations performed by the above-described patterned plate rolling method.

[0022] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0023] The proposed solution addresses the problem that, after the steel grade of a slab is standardized, the finishing rolling model cannot correctly identify and distinguish the actual steel grade of the slab based on the steel grade name. This solution determines the chemical composition of the current slab, and based on this composition, determines the slab strength and the steel grade to which the slab belongs. This allows the finishing rolling model to identify and distinguish the actual steel grade of the current slab based on its strength and the stated steel grade, and then rolls the slab using rolling parameters corresponding to the actual steel grade. This not only improves the accuracy of the finishing rolling model in identifying the slab steel grade and the precision of the finishing rolling force setting, but also ensures the production stability and efficiency of the rolling line, and improves the quality of the slab. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 A flowchart of a rolling method for a patterned plate according to one embodiment of this application is shown;

[0026] Figure 2 A comparison diagram of the automatic recognition effect of the finishing mill model in one embodiment of this application is shown;

[0027] Figure 3 A comparison diagram showing the accuracy of the finishing rolling force prediction for a finishing rolling model in one embodiment of this application is provided.

[0028] Figure 4 A structural block diagram of a patterned plate rolling apparatus according to one embodiment of this application is shown;

[0029] Figure 5 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown. Detailed Implementation

[0030] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art.

[0031] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.

[0032] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.

[0034] To reduce costs and increase efficiency, companies use defective slabs with inconsistent chemical compositions, such as recycled slabs and head / tail slabs, from the steelmaking process. This results in a complex and diverse composition of the slabs used for patterned steel plate rolling. While these defective slabs are uniformly reclassified to the same steel grade before rolling, the sheer variety of steel grades used for patterned steel plate rolling (currently around 200 grades) makes it difficult for the finishing mill model to correctly identify and distinguish the actual steel grade of the slabs. If the finishing mill model identifies two slabs with the same steel grade, but their chemical compositions differ significantly (i.e., the steel grade is uniformly reclassified, but the two slabs are not actually of the same steel grade, yet they are uniformly reclassified as such; different steel grades result in different chemical compositions), this will cause abnormalities in the finishing mill rolling force settings for slabs of the same steel grade. This severely affects the production stability and efficiency of the rolling line, as well as the quality of the slabs.

[0035] To address the aforementioned issues, this application proposes a rolling method, medium, and equipment for patterned steel plates. By determining the chemical composition of the current slab, the slab strength and steel class of the current slab are determined based on the chemical composition. This allows the finishing rolling model to identify and distinguish the actual steel grade of the current slab based on its slab strength and the steel class it belongs to. The model then rolls the slab using rolling parameters corresponding to the actual steel grade. This not only improves the accuracy of the finishing rolling model in identifying the slab steel grade and the precision of the finishing rolling force setting, but also ensures the production stability and efficiency of the rolling production line, and improves the quality of the slab.

[0036] The implementation details of the technical solutions in the embodiments of this application are described in detail below:

[0037] Reference Figure 1 , Figure 1 This is a flowchart of a patterned plate rolling method in one embodiment of this application.

[0038] According to a typical embodiment of this application, a method for rolling a patterned plate is provided, the method comprising the following steps S1 to S5:

[0039] Step S1: Obtain historical slab data from the slab database. The historical slab data includes the chemical composition, slab thickness, slab width, slab temperature, slab strength, steel type, and rolling parameters of the historical slab.

[0040] In this application, the steel grades of the patterned steel slabs are complex and diverse. After each slab is rolled, the historical slab data of each slab is stored to provide sufficient data for the subsequent finishing rolling model to identify the slab. In the actual production process of the patterned steel slab, the historical slab data of the historical slabs in the slab database is first obtained. The historical slabs can be all the patterned steel slabs in the history of the rolling production line, or the previous slab of the slab that is about to be rolled.

[0041] Step S2: Obtain the target chemical composition, target slab thickness, target slab width, and target slab temperature of the target slab.

[0042] In this application, after uniformly modifying the steel grades of patterned slabs, the finishing rolling model cannot correctly identify and distinguish the actual steel grade of the slab based on the steel grade name. To ensure that the finishing rolling model can correctly identify and distinguish the steel grade of the slab, and thus determine the accurate finishing rolling force based on the slab steel grade, the target chemical composition, target slab thickness, target slab width, and target slab temperature of the target slab can be obtained first. The target chemical composition may include at least carbon, manganese, niobium, and vanadium.

[0043] In one embodiment of this application, the target slab thickness can be 4.75 mm, and the target slab width can be 1050 mm. It should be noted that the values ​​of the target slab thickness and width are limited to the target slab itself. Depending on the steel grade of the target slab, the target slab thickness and width can also be other values. The above values ​​are only specific values ​​in one embodiment of this application, but this application is not limited to this specific embodiment.

[0044] Step S3: Calculate the target slab strength of the target slab based on the target chemical composition, and determine the target steel class of the target slab based on the target slab strength.

[0045] In one embodiment of this application, calculating the target slab strength based on the target chemical composition includes: calculating the target slab strength based on the target chemical composition, wherein the calculation formula for the target slab strength is as follows:

[0046] δ S =A+B×C%+D×Si%+E×Mn%+F×Nb%+G×V%

[0047] Where, δ S The target slab strength is represented by A, B, D, E, F, and G; the curing parameters are represented by C%; the carbon content in the target chemical composition of the target slab is represented by Si%; the silicon content in the target chemical composition of the target slab is represented by Mn%; the manganese content in the target chemical composition of the target slab is represented by Nb%; and the vanadium content in the target chemical composition of the target slab is represented by V%.

[0048] In this application, the slab strength of the steel slab is related to its chemical composition. After obtaining the chemical composition of the target slab, the target slab strength can be calculated based on the chemical composition, specifically according to the aforementioned formula for calculating target slab strength. After obtaining the target slab strength, the target steel class of the target slab can also be determined based on the target slab strength. Specifically, the steel class of the slab can be first divided into 10 layers based on the slab strength, and then the target steel class of the target slab can be determined based on the target slab strength.

[0049] In one embodiment of this application, determining the target steel race of the target slab based on the target slab strength includes: if the target slab strength is less than or equal to 350 MPa, then the steel race is 0; if the target slab strength is greater than or equal to 351 MPa and less than or equal to 400 MPa, then the target steel race is 1; if the target slab strength is greater than or equal to 401 MPa and less than or equal to 450 MPa, then the target steel race is 2; if the target slab strength is greater than or equal to 451 MPa and less than or equal to 500 MPa, then the target steel race is 3; if the target slab strength is greater than or equal to 501 MPa and less than or equal to 550 MPa... If the target slab strength is greater than or equal to 551 MPa and less than or equal to 600 MPa, then the target steel class is 4; if the target slab strength is greater than or equal to 601 MPa and less than or equal to 650 MPa, then the target steel class is 6; if the target slab strength is greater than or equal to 651 MPa and less than or equal to 700 MPa, then the target steel class is 7; if the target slab strength is greater than or equal to 701 MPa and less than or equal to 750 MPa, then the target steel class is 8; if the target slab strength is greater than or equal to 751 MPa and less than or equal to 800 MPa, then the target steel class is 9. For example, if the calculated target slab strength is 455 MPa, then the target steel class to which the target slab belongs is determined to be 3.

[0050] Step S4: Based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature, calculate the slab weight value of the target slab. The slab weight value is used to characterize the degree of matching between the target slab and the historical slab.

[0051] In one embodiment of this application, calculating the slab weight value of the target slab based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature includes: calculating the thickness change, width change, and temperature change of the target slab compared to the historical slabs based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature; and calculating the slab weight value of the target slab based on the thickness change, width change, and temperature change. The formula for calculating the slab weight value is as follows:

[0052] Sh=ΔH×Sh H +ΔW×Sh W +ΔT×Sh T

[0053] Where Sh represents the slab weight value of the target slab; ΔH represents the thickness change; ΔW represents the width change; ΔT represents the temperature change; Sh H This represents the thickness weight value corresponding to the thickness change; Sh W This represents the width weight value corresponding to the width change; Sh T This represents the temperature weight value corresponding to the temperature change.

[0054] In this application, the slab weight value of the target slab can also be calculated based on the historical slab data, the thickness, the width, and the temperature of the target slab. For example, after obtaining historical slabs from the slab database, the chemical composition, thickness, width, temperature, strength, steel type, and rolling parameters of the previous slab (historical slab) of the target slab are obtained. Then, the slab weight value of the previous slab and the target slab are calculated according to the above formula. The slab weight value of the previous slab and the target slab are then compared. If the slab weight value of the previous slab is less than a second preset value, while the slab weight value of the target slab is greater than or equal to the second preset value, it can be concluded that the target slab and the previous slab may not belong to the same type of steel plate. The slab weight value can be used as a key condition for the finishing rolling model to identify and distinguish the actual steel type of the slab, thereby greatly improving the accuracy of the finishing rolling model in identifying and distinguishing the steel type of the slab.

[0055] Step S5: If the historical slab and the target slab have the same steel class, and the slab strength difference between the target slab and the historical slab is less than a first preset value, and the slab weight value is less than a second preset value, then the rolling parameters of the historical slab are determined as the target rolling parameters of the target slab, and the target slab is rolled according to the target rolling parameters.

[0056] In one embodiment of this application, the second preset value can be 1.55.

[0057] In this application, after determining the slab strength, steel type, and slab weight value of the target slab, if the slab strength difference is less than a first preset value and the slab weight value is less than a second preset value, then the target slab and the historical slab are determined to be of the same type of steel. Therefore, the rolling parameters of the historical slab can be determined as the target rolling parameters of the target slab, and the target slab is rolled according to the target rolling parameters to ensure the accuracy of the finishing rolling force setting.

[0058] In one embodiment of this application, the method further includes: after the target slab is rolled, the target slab strength and target steel species of the target slab are saved to the slab database using a genetic model.

[0059] In this application, in order to improve the accuracy of the finishing rolling model in identifying and distinguishing slab steel grades, after the target slab is rolled, the target slab strength and target steel grade of the target slab can be saved to the slab database through the genetic model of the finishing rolling model. The target chemical composition, target slab thickness, target slab width, target slab temperature and target rolling parameters of the target slab can also be saved to the slab database through the genetic model to provide sufficient production data for subsequent slab rolling.

[0060] In one embodiment of this application, the method further includes: if the steel class of the historical slab and the target slab are different, or the slab strength difference between the target slab and the historical slab is greater than or equal to the first preset value, or the slab weight value is greater than or equal to the second preset value, it indicates that the target slab and the historical slab do not belong to the same type of slab. In order to ensure the accuracy of the slab rolling force setting, a new algorithm is used to recalculate the target slab strength and target steel class of the target slab.

[0061] The specific implementation of this application will be further illustrated by specific embodiments below, but the specific implementation of this application is not limited to the following embodiments.

[0062] Step 1: Before rolling the target slab, retrieve the historical slab data of the previous historical slab from the slab database. This historical slab data includes the chemical composition, thickness, width, temperature, strength, steel class, and rolling parameters of the historical slab. Then, retrieve the target slab data, which includes the target chemical composition, thickness, width, and temperature of the target slab. The historical slab data and the target slab data are shown in Table 1 below.

[0063] Table 1

[0064]

[0065] Step 2: Calculate the target slab strength based on the target chemical composition, and determine the target steel class of the target slab based on the target slab strength. The slab strength and steel class of the historical slabs and the target slab are shown in Table 2 below.

[0066] Table 2

[0067]

[0068] Step 3: Based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature, calculate the slab weight value of the target slab. The slab weight values ​​of the historical slabs and the target slab are shown in Table 3 below.

[0069] Table 3

[0070]

[0071] Since the target slab and the historical slab mentioned in Table 3 above do not belong to the same steel class, the slab strengths of the two slabs differ significantly. Furthermore, the weight value of the target slab is greater than the second preset value (1.55). The finishing rolling model automatically identifies that the target slab and the historical slab are not of the same type of steel. The historical slab is SPCC-1 steel, and the target slab is M4A03 steel. Considering the actual chemical composition, width, thickness, and temperature of the slab, the design of the slab strength calculation method, automatic steel classification, and reasonable setting of weight values ​​and thresholds achieve the purpose of automatically identifying and distinguishing the original steel grade of the slab. This can be referred to as... Figure 2 As shown, this significantly improves the prediction accuracy of the finishing mill model during patterned steel plate production, ensuring on-site production stability. (See example...) Figure 3 As shown.

[0072] The following describes an apparatus embodiment of this application, which can be used to perform the patterned plate rolling method described in the above embodiments of this application. For details not disclosed in the apparatus embodiments of this application, please refer to the embodiments of the patterned plate rolling method described above.

[0073] Figure 4 This is a structural block diagram of a patterned plate rolling apparatus according to an embodiment of this application.

[0074] Reference Figure 4 As shown, a patterned plate rolling apparatus 400 according to an embodiment of this application includes: a first acquisition unit 401, a second acquisition unit 402, a first calculation unit 403, a second calculation unit 404, and a determination unit 405.

[0075] The first acquisition unit 401 is used to acquire historical slab data from the slab database. The historical slab data includes the chemical composition, slab thickness, slab width, slab temperature, slab strength, steel type, and rolling parameters of the historical slab.

[0076] The second acquisition unit 402 is used to acquire the target chemical composition, target slab thickness, target slab width and target slab temperature of the target slab.

[0077] The first calculation unit 403 is used to calculate the target slab strength of the target slab based on the target chemical composition, and to determine the target steel class of the target slab based on the target slab strength.

[0078] The second calculation unit 404 is used to calculate the slab weight value of the target slab based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature. The slab weight value is used to characterize the degree of matching between the target slab and the historical slab.

[0079] The determining unit 405 is used to determine the rolling parameters of the historical slab as the target rolling parameters of the target slab if the historical slab and the target slab have the same steel class, the difference in slab strength between the target slab and the historical slab is less than a first preset value, and the slab weight value is less than a second preset value, and then rolls the target slab according to the target rolling parameters.

[0080] Reference Figure 5 , Figure 5 A schematic diagram of the structure of a computer system suitable for implementing the electronic device of the present application is shown.

[0081] like Figure 5 As shown, the computer system 500 includes a Central Processing Unit (CPU) 501, which can perform various appropriate actions and processes based on programs stored in Read-Only Memory (ROM) 502 or programs loaded from storage portion 508 into Random Access Memory (RAM) 503, such as performing the methods described in the above embodiments. The RAM 503 also stores various programs and data required for system operation. The CPU 501, ROM 502, and RAM 503 are interconnected via a bus 504. An Input / Output (I / O) interface 505 is also connected to the bus 504.

[0082] The following components are connected to I / O interface 505: an input section 506 including a keyboard, mouse, etc.; an output section 507 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 508 including a hard disk, etc.; and a communication section 509 including a network interface card such as a LAN (Local Area Network) card, modem, etc. The communication section 509 performs communication processing via a network such as the Internet. A drive 510 is also connected to I / O interface 505 as needed. Removable media 511, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 510 as needed so that computer programs read from them can be installed into storage section 508 as needed.

[0083] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 509, and / or installed from removable medium 511. When the computer program is executed by central processing unit (CPU) 501, it performs various functions defined in the system of this application.

[0084] It should be noted that the computer-readable medium shown in the embodiments of this application can be a computer-readable signal medium or a computer-readable storage medium, or any combination of the two. A computer-readable storage medium can be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), flash memory, optical fiber, portable compact disc read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this application, a 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, apparatus, or device. In this application, a computer-readable signal medium can include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such transmitted data signals can take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. The computer-readable signal medium can also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium can be transmitted using any suitable medium, including but not limited to wireless, wired, etc., or any suitable combination thereof.

[0085] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. Each block in a flowchart or block diagram may represent a module, segment, or portion of code, which contains one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram or flowchart, and combinations of blocks in a block diagram or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0086] The units described in the embodiments of this application can be implemented in software or hardware, and the described units can also be located in a processor. The names of these units do not necessarily limit the specific unit itself.

[0087] According to a typical embodiment of this application, this application also proposes a computer-readable storage medium storing at least one piece of program code, which is loaded and executed by a processor to implement the operations performed by the patterned plate rolling method as described above.

[0088] According to a typical embodiment of this application, this application also proposes an electronic device, the electronic device including a memory and a processor, the memory storing a computer program, characterized in that the processor executes the computer program to implement the operations performed by the patterned plate rolling method as described above.

[0089] It should be noted that although several modules or units for the device used to perform actions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the embodiments of this 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 and embodied by multiple modules or units.

[0090] As can be seen from the above technical solution, this application has at least the following advantages and positive effects:

[0091] Firstly, by adopting the scheme proposed in this application, the chemical composition of the current slab is determined, and the slab strength and steel class of the current slab are determined based on the chemical composition. This allows the finishing rolling model to identify and distinguish the actual steel grade of the current slab based on its slab strength and the steel class it belongs to, and to roll the current slab using rolling parameters corresponding to the actual steel grade. This not only improves the accuracy of the finishing rolling model in identifying the slab steel grade and the precision of the finishing rolling force setting, but also ensures the production stability and efficiency of the rolling production line, and improves the quality of the slab.

[0092] Secondly, the proposed solution improves the accuracy of identifying and distinguishing slab steel grades, ensures the accuracy of the finishing rolling force setting, and enhances the production stability and efficiency of the rolling production line, thereby improving slab quality.

[0093] Third, adopting the solution proposed in this application can greatly reduce the amount of scrapped steel strip and equipment damage, significantly save resources and equipment maintenance funds, and reduce costs.

[0094] Although this application has been described with reference to several typical embodiments, it should be understood that the terminology used is descriptive and exemplary, and not restrictive. Since this application can be embodied in many forms without departing from the spirit or substance of the application, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be interpreted broadly within the spirit and scope defined by the appended claims. Therefore, all variations and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A method for rolling patterned steel plates, characterized in that, The method includes: Obtain historical slab data from the slab database, including the chemical composition, thickness, width, temperature, strength, steel type, and rolling parameters of the historical slab. Obtain the target chemical composition, target slab thickness, target slab width, and target slab temperature of the target slab; The target slab strength is calculated based on the target chemical composition, and the target steel class of the target slab is determined based on the target slab strength. Based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature, the slab weight value of the target slab is calculated. The slab weight value is used to characterize the degree of matching between the target slab and the historical slab. If the historical slab and the target slab are of the same steel class, and the slab strength difference between the target slab and the historical slab is less than a first preset value, and the slab weight value is less than a second preset value, then the rolling parameters of the historical slab are determined as the target rolling parameters of the target slab, and the target slab is rolled according to the target rolling parameters. The step of calculating the target slab strength based on the target chemical composition includes: The target slab strength is calculated based on the target chemical composition, and the formula for calculating the target slab strength is as follows: in, This indicates the target slab strength; A , B , D , E , F , G Indicates curing parameters; C% This indicates the carbon content in the target chemical composition of the target slab; Si% This indicates the silicon content in the target chemical composition of the target slab; Mn% This indicates the manganese content in the target chemical composition of the target slab; Nb% This indicates the niobium content in the target chemical composition of the target slab; V% This indicates the vanadium content in the target chemical composition of the target slab; The step of calculating the slab weight value of the target slab based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature includes: Based on the historical slab data, the target slab thickness, the target slab width, and the target slab temperature, the changes in thickness, width, and temperature of the target slab compared to the historical slab are calculated. Based on the thickness change, the width change, and the temperature change, the slab weight value of the target slab is calculated. The formula for calculating the slab weight value is as follows: in, This represents the slab weight value of the target slab; This indicates the amount of thickness change; This indicates the amount of width change; This indicates the amount of temperature change; This represents the thickness weight value corresponding to the thickness change. This represents the width weight value corresponding to the width change. This represents the temperature weight value corresponding to the temperature change.

2. The method according to claim 1, characterized in that, Determining the target steel class of the target slab based on the target slab strength includes: If the target slab strength is less than or equal to 350 MPa, then the steel grade is 0; If the target slab strength is greater than or equal to 351 MPa and less than or equal to 400 MPa, then the target steel class is 1; If the target slab strength is greater than or equal to 401 MPa and less than or equal to 450 MPa, then the target steel class is 2; If the target slab strength is greater than or equal to 451 MPa and less than or equal to 500 MPa, then the target steel class is 3; If the target slab strength is greater than or equal to 501 MPa and less than or equal to 550 MPa, then the target steel class is 4. If the target slab strength is greater than or equal to 551 MPa and less than or equal to 600 MPa, then the target steel class is 5; If the target slab strength is greater than or equal to 601 MPa and less than or equal to 650 MPa, then the target steel race is 6; If the target slab strength is greater than or equal to 651 MPa and less than or equal to 700 MPa, then the target steel class is 7; If the target slab strength is greater than or equal to 701 MPa and less than or equal to 750 MPa, then the target steel race is 8; If the target slab strength is greater than or equal to 751 MPa and less than or equal to 800 MPa, then the target steel class is 9.

3. The method according to claim 1, characterized in that, The target slab thickness is 4.75 mm and the target slab width is 1050 mm.

4. The method according to claim 1, characterized in that, The second preset value is 1.

55.

5. The method according to claim 1, characterized in that, The method further includes: After the target slab is rolled, the target slab strength and target steel species are saved to the slab database using a genetic model.

6. The method according to claim 1, characterized in that, The method further includes: If the steel class of the historical slab is different from that of the target slab, or the difference in slab strength between the target slab and the historical slab is greater than or equal to the first preset value, or the slab weight value is greater than or equal to the second preset value, then a new algorithm is used to recalculate the target slab strength and target steel class of the target slab.

7. 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 method as described in any one of claims 1 to 6.

8. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it performs the operations described in any one of claims 1 to 6.

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