Method for controlling the rolling of a strip of steel and related apparatus

Abstract

The application discloses a strip steel rolling control method and related equipment, and relates to the field of strip steel rolling, and mainly aims to solve the problem that the edge part of medium-high carbon steel is prone to cracking during rolling. The method comprises the following steps: acquiring a steel type to be rolled; and in the case that the steel type is medium-high carbon steel, reducing the process water optimization of the edge part of the medium-high carbon steel to reduce the quenching degree of the edge part of the medium-high carbon steel. The application is used for the control process of strip steel rolling.

Description

Technical Field

[0001] This invention relates to the field of steel rolling, and more particularly to a control method and related equipment for strip rolling. Background Technology

[0002] Medium and high carbon steel refers to steel grades with a carbon content higher than 0.25%. They are mainly used in fields requiring high wear resistance, such as cutting tools, saw blades, and textile needles. Due to their higher carbon content, medium and high carbon steel has good hardenability but is sensitive to process water. During the finishing rolling stage, the strip is prone to edge breakage and cracking at the beginning and end, damaging the work rolls and causing indentation defects. During the coiling process, edge breakage and cracking at the beginning and end also damage the auxiliary coiling rolls, causing indentation defects. Severe edge cracking can lead to strip breakage during coiling or subsequent processing. Summary of the Invention

[0003] In view of the above problems, the present invention provides a control method and related equipment for strip rolling, the main purpose of which is to solve the problem that cracks easily occur at the edges of medium and high carbon steel during rolling.

[0004] To solve at least one of the above-mentioned technical problems, in a first aspect, the present invention provides a method for controlling strip rolling, the method comprising:

[0005] Obtain the type of steel to be rolled;

[0006] When the steel type is medium-high carbon steel, the process water optimization of the edge portion of the medium-high carbon steel is reduced to decrease the degree of rapid cooling of the edge portion of the medium-high carbon steel.

[0007] Optionally, when the steel type is medium-high carbon steel, the process water optimization for reducing the edge portion of the medium-high carbon steel to reduce the quenching degree of the edge portion includes:

[0008] When the steel type is medium-high carbon steel and hot rolling is required, the process water level of the edge portion of the medium-high carbon steel is reduced in the hot rolling process to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel.

[0009] Optionally, the above methods also include:

[0010] When the above-mentioned medium and high carbon steel is hot-rolled and its shape changes, the edge portion of the above-mentioned medium and high carbon steel is enlarged.

[0011] Optionally, the above-mentioned optimization of process water for reducing the edge portion of medium and high carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium and high carbon steel includes:

[0012] Stop fine descaling optimization of the edge portion of the above-mentioned medium and high carbon steel to reduce the degree of rapid cooling of the edge portion of the above-mentioned medium and high carbon steel.

[0013] Optionally, the above-mentioned optimization of process water for reducing the edge portion of medium and high carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium and high carbon steel includes:

[0014] Stop applying anti-stripping water to the edge portions of the aforementioned medium and high carbon steel to reduce the rapid cooling of the edge portions.

[0015] Optionally, the above-mentioned optimization of process water for reducing the edge portion of medium and high carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium and high carbon steel includes:

[0016] When the aforementioned medium-high carbon steel enters the mechanized cooling zone, the temperature of the edge portion of the medium-high carbon steel is controlled to be higher than that of the middle portion in order to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel. The temperature difference between the edge portion and the middle portion of the medium-high carbon steel is 20-100 degrees.

[0017] Optionally, the above-mentioned optimization of process water for reducing the edge portion of medium and high carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium and high carbon steel includes:

[0018] When the aforementioned medium and high carbon steel enters the coiler, cooling water is stopped being introduced into the edge portion of the medium and high carbon steel to reduce the rapid cooling of the edge portion of the medium and high carbon steel.

[0019] Secondly, embodiments of the present invention also provide a control device for strip rolling, comprising:

[0020] The acquisition unit is used to acquire the type of steel to be rolled;

[0021] The optimization unit is used to reduce the quenching degree of the edge portion of the medium-high carbon steel when the steel type is medium-high carbon steel.

[0022] 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 strip rolling control method are implemented.

[0023] 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 strip rolling control method described above.

[0024] By employing the above technical solution, the strip rolling control method and related equipment provided by this invention address the problem of edge cracking in medium and high carbon steel during rolling. This invention identifies the type of steel to be rolled; when the steel type is medium and high carbon steel, it optimizes the process water flow to reduce the rapid cooling of the edge portion of the medium and high carbon steel. In this solution, by reducing the rapid cooling of the edge portion by cooling water in the finishing rolling zone of the medium and high carbon steel, the temperature control of the edge portion is stabilized and highly operable, thereby significantly improving the defect of edge cracking in hot-rolled medium and high carbon steel strip.

[0025] Correspondingly, the control device, equipment, and computer-readable storage medium for strip rolling provided in the embodiments of the present invention also have the above-mentioned technical effects.

[0026] 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

[0027] 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:

[0028] Figure 1 A flowchart illustrating a control method for strip rolling provided by an embodiment of the present invention is shown;

[0029] Figure 2 This diagram illustrates the composition of a control device for strip rolling according to an embodiment of the present invention.

[0030] Figure 3 This diagram illustrates the composition of a control electronic device for strip rolling provided in an embodiment of the present invention. Detailed Implementation

[0031] 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.

[0032] To address the issue of edge cracking during the rolling of medium and high carbon steel, this invention provides a method for controlling strip rolling, such as... Figure 1 As shown, the method includes:

[0033] S101. Obtain the type of steel to be rolled;

[0034] For example, different steel grades have different rolling problems. This method focuses on the cracking problem of medium and high carbon steel, so the steel grade to be rolled is first obtained.

[0035] S102. When the above-mentioned steel type is medium-high carbon steel, the process water optimization of the edge part of the above-mentioned medium-high carbon steel is reduced to reduce the degree of rapid cooling of the edge part of the above-mentioned medium-high carbon steel.

[0036] For example, due to their higher carbon content, medium and high carbon steels have good hardenability and are sensitive to process water. This solution finds that during the finishing rolling stage, the strip's ends are prone to edge chipping and cracking, damaging the work rolls and causing indentation defects. During the coiling process, the ends are also prone to edge chipping and cracking, damaging the coiling rollers and causing indentation defects; severe edge cracking can even cause strip breakage during coiling or subsequent processing. Therefore, this method, when the steel type is medium and high carbon steel, optimizes the process water usage at the edges of the medium and high carbon steel to reduce the quenching degree at the edges, thereby reducing quenching at the strip's ends, improving the strip's brittleness, and avoiding edge chipping and cracking defects during hot rolling.

[0037] By employing the above technical solution, the strip rolling control method provided by this invention addresses the problem of edge cracking in medium and high carbon steel during rolling. This invention identifies the type of steel to be rolled; when the steel type is medium and high carbon steel, it optimizes the process water cooling at the edges to reduce the rapid cooling of the edges. In this solution, by reducing the rapid cooling of the edges by cooling water in the finishing rolling zone of medium and high carbon steel, the temperature control of the edges becomes stable and highly operable, thereby significantly improving the defect of edge cracking in hot-rolled medium and high carbon steel strips.

[0038] In one embodiment, when the steel type is medium-high carbon steel, the process water optimization to reduce the quenching degree of the edge portion of the medium-high carbon steel includes:

[0039] When the steel type is medium-high carbon steel and hot rolling is required, the process water level of the edge portion of the medium-high carbon steel is reduced in the hot rolling process to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel.

[0040] For example, in the process of rolling medium and high carbon steel, molten steel is smelted to obtain continuously cast billets. The billets are then heated, rough rolled, finish rolled and coiled in a conventional hot continuous rolling production line to obtain hot rolled coils. Finally, the coils undergo pickling, cold rolling, annealing and leveling processes to obtain the final product.

[0041] For example, medium and high carbon steel is applied in both hot-rolled and cold-rolled / annealed states. Hot-rolled high carbon steel is mainly used in thicker products, primarily in saw blades and similar applications. Cold-rolled / annealed products are mainly used in more precise industries, requiring higher standards for the original microstructure of the steel plate and greater dimensional accuracy. Both hot-rolled and cold-rolled / annealed products undergo a hot-rolling process. Therefore, when hot-rolling the aforementioned medium and high carbon steel, optimizing the process water level at the edges of the steel during hot rolling reduces the rapid cooling at these edges, improves the brittleness of the strip's ends, and avoids edge chipping and cracking defects that occur during hot rolling.

[0042] In one embodiment, the above method further includes:

[0043] When the above-mentioned medium and high carbon steel is hot-rolled and its shape changes, the edge portion of the above-mentioned medium and high carbon steel is enlarged.

[0044] For example, as the thickness of the steel plate decreases continuously during the rolling process, the corresponding planar area increases continuously. Therefore, in order to ensure that the process water optimization is always reduced for a fixed area, the edge portion of the medium and high carbon steel is enlarged when the shape of the medium and high carbon steel changes, so that the edge portion is always a fixed area during the hot rolling process, thereby ensuring the accuracy of the process water optimization.

[0045] In one embodiment, the above-mentioned optimization of process water for reducing the edge portion of medium-high carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium-high carbon steel includes:

[0046] Stop fine descaling optimization of the edge portion of the above-mentioned medium and high carbon steel to reduce the degree of rapid cooling of the edge portion of the above-mentioned medium and high carbon steel.

[0047] For example, the intermediate billet adopts a head-and-tail-letting process during the fine descaling process, stopping the fine descaling of the edge portion of the medium and high carbon steel. The length of the edge portion of the medium and high carbon steel ranges from 0.2 to 2 m, so as to reduce the degree of rapid cooling of the edge portion of the medium and high carbon steel, thereby reducing the rapid cooling of the head and tail of the strip, improving the brittleness of the head and tail of the strip, and avoiding edge breakage and edge cracking defects that occur during hot rolling.

[0048] In one embodiment, the above-mentioned optimization of process water for reducing the edge portion of medium-high carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium-high carbon steel includes:

[0049] Stop applying anti-stripping water to the edge portions of the aforementioned medium and high carbon steel to reduce the rapid cooling of the edge portions.

[0050] For example, in the finishing mill, the strip is equipped with anti-stripping water to allow the head and tail to pass, with a length range of 2 to 15m, in order to reduce the degree of rapid cooling of the edge part of the medium and high carbon steel, thereby reducing the rapid cooling of the head and tail of the strip, improving the brittleness of the head and tail of the strip, and avoiding edge breakage and edge cracking defects that occur during hot rolling.

[0051] In one embodiment, the above-mentioned optimization of process water for reducing the edge portion of medium-high carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium-high carbon steel includes:

[0052] When the aforementioned medium-high carbon steel enters the mechanized cooling zone, the temperature of the edge portion of the medium-high carbon steel is controlled to be higher than that of the middle portion in order to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel. The temperature difference between the edge portion and the middle portion of the medium-high carbon steel is 20-100 degrees.

[0053] For example, when the strip enters the laminar cooling zone, it is activated with hot head and hot tail functions. The length ranges from 5 to 50 meters. The temperature of the hot head and hot tail is 20 to 100 degrees higher than the normal coiling temperature. Because the temperature difference in the laminar cooling zone is extremely large compared to other processes, the head and tail yielding process is not used when the strip enters the laminar cooling zone to prevent excessive temperature difference. By using the above method, the degree of rapid cooling of the edge portion of the medium and high carbon steel is reduced, thereby reducing the rapid cooling of the strip head and tail, improving the brittleness of the strip head and tail, and avoiding edge breakage and cracking defects that occur during hot rolling.

[0054] In one embodiment, the above-mentioned optimization of process water for reducing the edge portion of medium-high carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium-high carbon steel includes:

[0055] When the aforementioned medium and high carbon steel enters the coiler, cooling water is stopped being introduced into the edge portion of the medium and high carbon steel to reduce the rapid cooling of the edge portion of the medium and high carbon steel.

[0056] For example, within the coiler range, the front side spray and pinch roll cooling water are used to allow the head and tail to be cleared, with a length range of 5 to 50 meters, in order to reduce the degree of rapid cooling of the edge portion of the medium and high carbon steel, thereby reducing the rapid cooling of the head and tail of the strip, improving the brittleness of the head and tail of the strip, and avoiding edge breakage and edge cracking defects that occur during hot rolling.

[0057] For example, the following illustrates a specific implementation step of an embodiment of the present invention:

[0058] This invention uses a medium carbon steel composition system for production. The typical steel composition is: C: 0.45%, Si: 0.20%, Mn: 0.70%, S: 0.009%, P: 0.02%, Al: 0.03%, with the remainder being iron and residues. The slab thickness is 237mm, the furnace heating time is 180 minutes, and the tapping temperature is 1180℃. After rough rolling, it is rolled into an intermediate billet. Fine descaling employs a single-row head and tail reduction function of 1m. Anti-stripping water (F1-F4) is used for head and tail reduction functions, with a length of 5.5m. The laminar cooling zone uses a hot head and hot tail function, with a length of 20m. The hot head temperature is 50℃ higher than the normal coiling temperature. During coiling, cooling water is sprayed on the front side and applied to the pinch rolls for 50m head and tail reductions respectively. The production capacity is 800 tons. There are no indentation defects caused by broken edges during the hot rolling process. The edge quality of the hot coil is good, with no cracks. There are no strip breaks in the downstream leveling and pickling processes.

[0059] For example, the above-mentioned process water optimization mainly includes a fine descaling step: removing secondary iron oxide scale appearing on the surface of the rolled piece by spraying water during the rolling process; an anti-stripping water spraying step: spraying rolling oil to improve the rolling lubrication effect and effectively reduce the tendency of oxide film peeling off the rolls; a layer cooling step: cooling down by water cooling; and a coiling step: adding cooling water to the medium and high carbon steel while coiling. This solution adopts fine descaling, anti-stripping water head and tail yielding processes to reduce damage to the finishing work rolls by the head and tail of the strip. The coiler side spraying and pinch roll head and tail yielding processes reduce the temperature drop at the head and tail of the coiler. By adopting process water optimization in a conventional hot continuous rolling production line, edge cracking and edge breakage defects caused by rapid cooling of the strip head and tail are reduced. The method is simple and can scientifically and effectively prevent edge cracking defects in hot-rolled medium and high carbon steel strips, thereby improving the yield and production efficiency of medium and high carbon steel.

[0060] 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 control device for strip rolling, used to control the above-mentioned... Figure 1 The 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: an acquisition unit 21 and an optimization unit 22, wherein...

[0061] Acquisition unit 21 is used to acquire the type of steel to be rolled;

[0062] The optimization unit 22 is used to reduce the process water optimization of the edge portion of the medium-high carbon steel in the case of medium-high carbon steel, so as to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel.

[0063] For example, in the case where the steel type is medium-high carbon steel, optimizing the process water for reducing the edge portion of the medium-high carbon steel to reduce the quenching degree of the edge portion includes:

[0064] When the steel type is medium-high carbon steel and hot rolling is required, the process water level of the edge portion of the medium-high carbon steel is reduced in the hot rolling process to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel.

[0065] For example, the above-mentioned unit is also used for:

[0066] When the above-mentioned medium and high carbon steel is hot-rolled and its shape changes, the edge portion of the above-mentioned medium and high carbon steel is enlarged.

[0067] For example, the above-mentioned optimization of process water for reducing the edge portion of medium and high carbon steel in the above-mentioned hot rolling process to reduce the quenching degree of the edge portion of the medium and high carbon steel includes:

[0068] Stop fine descaling optimization of the edge portion of the above-mentioned medium and high carbon steel to reduce the degree of rapid cooling of the edge portion of the above-mentioned medium and high carbon steel.

[0069] For example, the above-mentioned optimization of process water for reducing the edge portion of medium and high carbon steel in the above-mentioned hot rolling process to reduce the quenching degree of the edge portion of the medium and high carbon steel includes:

[0070] Stop applying anti-stripping water to the edge portions of the aforementioned medium and high carbon steel to reduce the rapid cooling of the edge portions.

[0071] For example, the above-mentioned optimization of process water for reducing the edge portion of medium and high carbon steel in the above-mentioned hot rolling process to reduce the quenching degree of the edge portion of the medium and high carbon steel includes:

[0072] When the aforementioned medium-high carbon steel enters the mechanized cooling zone, the temperature of the edge portion of the medium-high carbon steel is controlled to be higher than that of the middle portion in order to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel. The temperature difference between the edge portion and the middle portion of the medium-high carbon steel is 20-100 degrees.

[0073] For example, the above-mentioned optimization of process water for reducing the edge portion of medium and high carbon steel in the above-mentioned hot rolling process to reduce the quenching degree of the edge portion of the medium and high carbon steel includes:

[0074] When the aforementioned medium-high carbon steel enters the coiler, cooling water is stopped being introduced into the edge portion of the medium-high carbon steel to reduce the rapid cooling of the edge portion of the medium-high carbon steel.

[0075] By employing the above technical solution, the strip rolling control device provided by this invention addresses the problem of edge cracking in medium and high carbon steel during rolling. This invention identifies the type of steel to be rolled; when the steel type is medium and high carbon steel, it optimizes the process water flow to reduce the rapid cooling of the edge portion of the medium and high carbon steel. In this solution, by reducing the rapid cooling of the edge portion by cooling water in the finishing rolling zone of the medium and high carbon steel, the temperature control of the edge portion is stabilized and highly operable, thereby significantly improving the defect of edge cracking in hot-rolled medium and high carbon steel strip.

[0076] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and adjusting kernel parameters can implement a control method for strip rolling, which can solve the problem of edge cracking easily occurring during the rolling of medium and high carbon steel.

[0077] This invention provides a computer-readable storage medium including a stored program that, when executed by a processor, implements the above-described strip rolling control method.

[0078] This invention provides a processor for running a program, wherein the program executes the strip rolling control method.

[0079] 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 strip rolling control method described above.

[0080] 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 strip rolling control method.

[0081] The smart electronic devices mentioned in this article can be PCs, tablets, mobile phones, etc.

[0082] This application also provides a computer program product, which, when executed on a process management electronic device, is suitable for executing a program that initializes the following method steps:

[0083] Obtain the type of steel to be rolled;

[0084] When the steel type is medium-high carbon steel, the process water optimization of the edge portion of the medium-high carbon steel is reduced to decrease the degree of rapid cooling of the edge portion of the medium-high carbon steel.

[0085] Furthermore, in the case where the steel type is medium-high carbon steel, optimizing the process water for reducing the edge portion of the medium-high carbon steel to decrease the quenching degree of the edge portion includes:

[0086] When the steel type is medium-high carbon steel and hot rolling is required, the process water level of the edge portion of the medium-high carbon steel is reduced in the hot rolling process to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel.

[0087] Furthermore, the above methods also include:

[0088] When the above-mentioned medium and high carbon steel is hot-rolled and its shape changes, the edge portion of the above-mentioned medium and high carbon steel is enlarged.

[0089] Furthermore, the aforementioned optimization of process water reduction for the edge portions of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portions of the medium- and high-carbon steel includes:

[0090] Stop fine descaling optimization of the edge portion of the above-mentioned medium and high carbon steel to reduce the degree of rapid cooling of the edge portion of the above-mentioned medium and high carbon steel.

[0091] Furthermore, the aforementioned optimization of process water reduction for the edge portions of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portions of the medium- and high-carbon steel includes:

[0092] Stop applying anti-stripping water to the edge portions of the aforementioned medium and high carbon steel to reduce the rapid cooling of the edge portions.

[0093] Furthermore, the aforementioned optimization of process water reduction for the edge portions of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portions of the medium- and high-carbon steel includes:

[0094] When the aforementioned medium-high carbon steel enters the mechanized cooling zone, the temperature of the edge portion of the medium-high carbon steel is controlled to be higher than that of the middle portion in order to reduce the degree of rapid cooling of the edge portion of the medium-high carbon steel. The temperature difference between the edge portion and the middle portion of the medium-high carbon steel is 20-100 degrees.

[0095] Furthermore, the aforementioned optimization of process water reduction for the edge portions of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portions of the medium- and high-carbon steel includes:

[0096] When the aforementioned medium and high carbon steel enters the coiler, cooling water is stopped being introduced into the edge portion of the medium and high carbon steel to reduce the rapid cooling of the edge portion of the medium and high carbon steel.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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)).

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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 method for controlling strip rolling, characterized in that, include: Obtain the type of steel to be rolled; When the steel type is medium-high carbon steel, process water optimization is performed to reduce the quenching degree of the edge portion of the medium-high carbon steel. When the steel type is medium-high carbon steel, optimizing the process water for the edge portion of the medium-high carbon steel to reduce the quenching degree of the edge portion includes: When the steel type is medium-high carbon steel and hot rolling is required, the process water optimization of the edge portion of the medium-high carbon steel in the hot rolling process is reduced to decrease the degree of rapid cooling of the edge portion of the medium-high carbon steel. The optimization of process water reduction for the edge portion of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium- and high-carbon steel includes: Stop optimizing the fine descaling of the edge portion of the medium-high carbon steel to reduce the quenching of the edge portion of the medium-high carbon steel; The optimization of process water reduction for the edge portion of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium- and high-carbon steel includes: Stop applying anti-stripping water to the edge portion of the medium-high carbon steel to reduce the rapid cooling of the edge portion of the medium-high carbon steel; The optimization of process water reduction for the edge portion of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium- and high-carbon steel includes: When the medium and high carbon steel enters the layer cooling zone, the temperature of the edge part of the medium and high carbon steel is controlled to be higher than that of the middle part in order to reduce the rapid cooling of the edge part of the medium and high carbon steel. The temperature difference between the edge part and the middle part of the medium and high carbon steel is 20-100 degrees. When the strip enters the layer cooling zone, the hot head and hot tail functions are put into use, and the length range is 5-50m. The optimization of process water reduction for the edge portion of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium- and high-carbon steel includes: When the medium and high carbon steel enters the coiler, the injection of cooling water into the edge portion of the medium and high carbon steel is stopped to reduce the rapid cooling of the edge portion of the medium and high carbon steel. Within the coiler range, the cooling water injection of the front side spray and pinch roll is used for the head and tail clearance functions, with a length range of 5~50m.

2. The method according to claim 1, characterized in that, Also includes: When the medium-high carbon steel is hot-rolled and its shape changes, the edge portion of the medium-high carbon steel is enlarged.

3. A control device for strip rolling, characterized in that, The acquisition unit is used to acquire the type of steel to be rolled; The optimization unit is used to reduce the process water optimization of the edge portion of the medium-high carbon steel in the case where the steel type is medium-high carbon steel, so as to reduce the quenching degree of the edge portion of the medium-high carbon steel. When the steel type is medium-high carbon steel, optimizing the process water for the edge portion of the medium-high carbon steel to reduce the quenching degree of the edge portion includes: When the steel type is medium-high carbon steel and hot rolling is required, the process water optimization of the edge portion of the medium-high carbon steel in the hot rolling process is reduced to decrease the degree of rapid cooling of the edge portion of the medium-high carbon steel. The optimization of process water reduction for the edge portion of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium- and high-carbon steel includes: Stop optimizing the fine descaling of the edge portion of the medium-high carbon steel to reduce the quenching of the edge portion of the medium-high carbon steel; The optimization of process water reduction for the edge portion of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium- and high-carbon steel includes: Stop applying anti-stripping water to the edge portion of the medium-high carbon steel to reduce the rapid cooling of the edge portion of the medium-high carbon steel; The optimization of process water reduction for the edge portion of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium- and high-carbon steel includes: When the medium-high carbon steel enters the layer cooling zone, the temperature of the edge portion of the medium-high carbon steel is controlled to be higher than the temperature of the middle portion in order to reduce the rapid cooling of the edge portion of the medium-high carbon steel. The temperature difference between the edge portion and the middle portion of the medium-high carbon steel is 20-100 degrees. The optimization of process water reduction for the edge portion of medium- and high-carbon steel in the hot rolling process to reduce the quenching degree of the edge portion of the medium- and high-carbon steel includes: When the medium-high carbon steel enters the coiler, stop adding cooling water to the edge portion of the medium-high carbon steel to reduce the rapid cooling of the edge portion of the medium-high carbon steel.

4. 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 steps of the control method for strip rolling as described in any one of claims 1 to 2.

5. 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 used to call program instructions in the memory to execute the steps of the strip rolling control method as described in any one of claims 1 to 2.

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