An automatic switching method, device, equipment and medium for warm rolling and cold rolling

Abstract

The application discloses a kind of warm rolling and cold rolling automatic switching method, device, equipment and medium, the method includes: according to steel grade information, the steel coil to be rolled is marked with rolling process, wherein, rolling process mark includes warm rolling process control and cold rolling process control;If it is identified that the rolling process mark of current rolling steel coil is warm rolling process control, and the rolling process mark of the next steel coil to be rolled is cold rolling process control, then according to the distance between the weld of current rolling steel coil and the last stand of cold rolling mill group, current rolling process is switched from warm rolling process control to cold rolling process control;If it is identified that the rolling process mark of current rolling steel coil is cold rolling process control, and the rolling process mark of the next steel coil to be rolled is warm rolling process control, then according to the distance between the weld of the next steel coil to be rolled and the first stand of cold rolling mill group, current rolling process is switched from cold rolling process control to warm rolling process control.

Description

Technical Field

[0001] This invention relates to the field of strip rolling control technology, and in particular to an automatic switching method, apparatus, equipment and medium for warm rolling and cold rolling. Background Technology

[0002] Cold continuous rolling mills offer significant efficiency advantages over 20-roll reversible rolling mills. Newer small-diameter cold continuous rolling mills are gradually replacing traditional five-stand and 20-roll reversible rolling mills, enabling the simultaneous production of low- to medium-grade silicon steel as well as high-grade silicon steel. High-grade silicon steel exhibits room-temperature brittleness, thus requiring warm rolling processes. Low- to medium-grade silicon steel, with its low silicon content and low deformation resistance, can be produced using conventional cold rolling processes. If low- to medium-grade silicon steel is produced using warm rolling, slippage can occur at high speeds, potentially leading to instability and strip breakage. Conversely, if high-grade silicon steel is produced using cold rolling, edge cracking and strip breakage can occur even at low speeds.

[0003] During the production process, production is scheduled in conjunction with orders, and low-grade silicon steel is connected to high-grade silicon steel. This leads to frequent changes between warm rolling and cold rolling processes. When using a traditional five-stand rolling mill, low-grade silicon steel can be produced stably, but the brittle fracture rate is >15% when rolling high-grade silicon steel. When using a twenty-roll reversible rolling mill, high-grade silicon steel can be produced stably, but low-grade silicon steel slips and cannot be rolled stably. Summary of the Invention

[0004] This application provides an automatic switching method, apparatus, equipment, and medium for warm rolling and cold rolling. By automatically switching between warm rolling and cold rolling processes, it solves the strip breakage problem caused by the transition between warm rolling and cold rolling processes when connecting low-grade and high-grade silicon steel. This meets the production requirements for rolling low-grade and high-grade silicon steel in the same cold continuous rolling mill and improves the stability of cold rolling.

[0005] In a first aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0006] An automatic switching method between warm rolling and cold rolling, applied to a cold rolling mill, the method comprising:

[0007] Based on the steel grade information, each coil of steel to be rolled is marked with a rolling process mark, wherein the rolling process mark includes warm rolling process control and cold rolling process control;

[0008] During the rolling process, if it is identified that the rolling process of the current rolled steel coil is marked as warm rolling process control, and the rolling process of the next rolled steel coil is marked as cold rolling process control, then the current rolling process is switched from the warm rolling process control to the cold rolling process control according to the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill.

[0009] If the rolling process of the current rolled steel coil is identified as cold rolling process control, and the rolling process of the next rolled steel coil is identified as warm rolling process control, then the current rolling process is switched from cold rolling process control to warm rolling process control based on the distance between the weld of the next rolled steel coil and the first stand of the cold rolling mill.

[0010] Preferably, the step of switching the current rolling process from the warm rolling process control to the cold rolling process control based on the distance between the weld of the currently rolled steel coil and the last stand of the cold rolling mill includes: if it is detected that the weld of the currently rolled steel coil has traveled a first preset distance after passing the last stand of the cold rolling mill, the current rolling process is switched from the warm rolling process control to the cold rolling process control.

[0011] Preferably, the step of switching the current rolling process from the cold rolling process control to the warm rolling process control based on the distance between the weld seam of the next coil to be rolled and the first stand of the cold rolling mill includes: if the distance between the weld seam of the next coil to be rolled and the first stand of the cold rolling mill is detected to be less than or equal to a second preset distance, the current rolling process is switched from the cold rolling process control to the warm rolling process control.

[0012] Preferably, the step of marking each coil of steel to be rolled according to the steel grade information includes: if the silicon content of the steel coil in the steel grade information is greater than or equal to a preset percentage, then the rolling process of the steel coil to be rolled is marked as warm rolling process control; if the silicon content of the steel coil in the steel grade information is less than the preset percentage, then the rolling process of the steel coil to be rolled is marked as cold rolling process control.

[0013] Preferably, the cold rolling process control includes: controlling the electromagnetic induction heater at the inlet of the cold rolling mill to be closed, the opening degree of the inlet emulsion valve of all stands of the cold rolling mill to be 100%, and the outlet cooling emulsion valve of all stands to be fully opened, and controlling the temperature of the emulsion cleaning tank to drop to 50~60℃.

[0014] Preferably, the warm rolling process control includes: controlling the electromagnetic induction heater at the inlet of the cold rolling mill to turn on; controlling the opening degree of the inlet emulsion valve of all stands of the cold rolling mill according to the rolling speed of the cold rolling mill, and controlling all outlet cooling emulsion valves of all stands to be closed, and controlling the temperature of the emulsion cleaning tank to rise to 60~70℃.

[0015] Preferably, controlling the opening degree of the inlet emulsion valves of all stands of the cold rolling mill according to the rolling speed of the cold rolling mill includes: if the rolling speed of the cold rolling mill is a first rolling speed, then controlling the opening degree of the inlet emulsion valves of all stands of the cold rolling mill to be 20%~40%; if the rolling speed of the cold rolling mill is a second rolling speed, then controlling the opening degree of the inlet emulsion valves of all stands of the cold rolling mill to be 100%.

[0016] Secondly, through an embodiment of the present invention, the present invention provides the following technical solution:

[0017] An automatic switching device for warm rolling and cold rolling, applied to a cold rolling mill, the device comprising:

[0018] The marking module is used to mark the rolling process of each coil of steel to be rolled according to the steel grade information, wherein the rolling process marking includes warm rolling process control and cold rolling process control;

[0019] The first switching module is used to switch the current rolling process from the warm rolling process control to the cold rolling process control if, during the rolling process, it is detected that the rolling process of the current rolled steel coil is marked as warm rolling process control and the rolling process of the next rolled steel coil is marked as cold rolling process control, based on the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill.

[0020] The second switching module is used to switch the current rolling process from cold rolling process control to warm rolling process control if it is detected that the rolling process of the current rolled steel coil is marked as cold rolling process control and the rolling process of the next rolled steel coil is marked as warm rolling process control, based on the distance between the weld of the next rolled steel coil and the first stand of the cold rolling mill.

[0021] Thirdly, through one embodiment of the present invention, the following technical solution is provided:

[0022] An electronic device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the steps of the method described in any of the first aspects above.

[0023] Fourthly, through one embodiment of the present invention, the following technical solution is provided:

[0024] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any of the first aspects above.

[0025] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0026] The automatic switching method between warm rolling and cold rolling provided in this invention first marks each steel coil with a rolling process, specifying whether it is controlled by warm rolling or cold rolling. During rolling, if the rolling process control of the currently rolled steel coil and the next coil to be rolled meets the switching requirements, the rolling process is switched according to the operating status of the steel coil. This ensures that adjacent steel coils still have good rolling effects, avoiding steel coil quality problems caused by mismatch between rolling process and steel coil characteristics or improper switching timing. This application, by first marking the rolling process and then adjusting the automatic switching timing of the cold rolling mill based on the process mark, provides targeted rolling process control for the steel coil. This solves the strip breakage problem caused by the switching between warm rolling and cold rolling processes when connecting low-grade and medium-grade silicon steel with high-grade silicon steel, realizing automatic switching between warm rolling and cold rolling processes. This meets the production requirements of rolling low-grade and medium-grade and high-grade silicon steel in the same cold continuous rolling mill, improving cold rolling stability. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 based on these drawings without creative effort.

[0028] Figure 1 This is a flowchart of the automatic switching method between warm rolling and cold rolling in an embodiment of the present invention;

[0029] Figure 2 This is a schematic diagram of the automatic switching process between warm rolling and cold rolling in an embodiment of the present invention;

[0030] Figure 3 This is a schematic diagram of the automatic switching device between warm rolling and cold rolling in an embodiment of the present invention;

[0031] Figure 4 This is a schematic diagram of the structure of an electronic device in an embodiment of the present invention. Detailed Implementation

[0032] This application provides an automatic switching method, apparatus, equipment, and medium for warm rolling and cold rolling. By automatically switching between warm rolling and cold rolling processes, it solves the strip breakage problem caused by the transition between warm rolling and cold rolling processes when connecting low-grade and high-grade silicon steel. This meets the production requirements for rolling low-grade and high-grade silicon steel in the same cold continuous rolling mill and improves the stability of cold rolling.

[0033] The technical solution of this application embodiment is to solve the above-mentioned technical problems, and the general idea is as follows:

[0034] An automatic switching method for warm rolling and cold rolling, applied to a cold rolling mill, the method comprising: marking each coil of steel to be rolled with a rolling process according to steel grade information, wherein the rolling process marking includes warm rolling process control and cold rolling process control; during the rolling process, if the rolling process marking of the currently rolled steel coil is identified as warm rolling process control, and the rolling process marking of the next coil of steel to be rolled is identified as cold rolling process control, then the current rolling process is switched from warm rolling process control to cold rolling process control according to the distance between the weld of the currently rolled steel coil and the last stand of the cold rolling mill; if the rolling process marking of the currently rolled steel coil is identified as cold rolling process control, and the rolling process marking of the next coil of steel to be rolled is identified as warm rolling process control, then the current rolling process is switched from cold rolling process control to warm rolling process control according to the distance between the weld of the next coil of steel to be rolled and the first stand of the cold rolling mill.

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] Firstly, the present invention provides an automatic switching method for warm rolling and cold rolling, applied to a cold rolling mill. Specifically, as follows: Figure 1 As shown, the method includes the following steps S101 to S104:

[0037] Step S101: Based on the steel grade information, mark the rolling process for each coil of steel to be rolled, wherein the rolling process mark includes warm rolling process control and cold rolling process control.

[0038] As an example, the warm rolling temperature is greater than or equal to 200°C, and the cold rolling temperature is less than or equal to 150°C.

[0039] The steel grade information includes the silicon content of the steel coil. Based on the silicon content in the steel grade information, each steel coil to be rolled is marked with a rolling process mark. Specifically, the user order information includes the grade of production, the corresponding steel grade, and the corresponding silicon content. Therefore, the order and the silicon content can be matched. During order review, the rolling process mark of the steel coil to be rolled is determined according to the silicon content and sent to the secondary automatic control system of cold rolling.

[0040] In this embodiment, based on the steel grade information, each coil of steel to be rolled is marked with a rolling process. This may include: if the silicon content in the steel grade information of the coil is greater than or equal to a preset percentage, then the rolling process of the coil is marked as warm rolling; if the silicon content in the steel grade information of the coil is less than the preset percentage, then the rolling process of the coil is marked as cold rolling. Optionally, the preset percentage can be 3%, that is, the silicon content accounts for 3% of the steel coil.

[0041] For example, establish rolling process marks. When Si% ≥ a, warm rolling process control is adopted and the mark is 1; when Si% < a, cold rolling process control is adopted and the mark is 0.

[0042] In a specific embodiment, the cold rolling process control may include: controlling the electromagnetic induction heater at the entrance of the rolling mill of the cold rolling unit to be turned off, the opening degree of the inlet emulsion valves of all stands of the cold rolling unit to be 100%, and all the outlet cooling emulsion valves of all stands to be fully opened (opening degree is 100%), and controlling the temperature of the emulsion cleaning tank to drop to 50 - 60°C.

[0043] It should be noted that the inlet emulsion can play the roles of lubrication and temperature reduction, and the outlet emulsion is used for cooling. By controlling the opening degrees of the inlet and outlet emulsion valves to the maximum and using a large flow of emulsion to ensure the cold rolling process, a better cooling effect can be obtained to meet the requirements of cold rolling process control. The flow rate of the inlet emulsion is controlled by the inlet emulsion valve, and the flow rate of the outlet emulsion is controlled by the outlet emulsion valve. Each of the 1 - n stands corresponds to an inlet emulsion valve and an outlet emulsion valve.

[0044] Specifically, during cold rolling process control, the electromagnetic induction heater at the entrance of the rolling mill is turned off, the temperature of the strip entering the rolling mill is set to room temperature, the opening degrees of the emulsion valves of the 1st to the ith stands (i ≤ n, n is a natural number) of the rolling unit are 100% and do not change with the rolling speed, and all the outlet cooling emulsion valves are fully opened; the temperature of the emulsion cleaning tank drops to 50 - 60°C, and the emulsion temperature is controlled to meet the requirements of the cold rolling process. By adopting this cold rolling process control, the stable rolling of the strip by the cold rolling unit can be achieved.

[0045] In a specific embodiment, the warm rolling process control includes: controlling the electromagnetic induction heater at the entrance of the rolling mill of the cold rolling unit to be turned on; controlling the opening degrees of the inlet emulsion valves of all stands of the cold rolling unit according to the rolling speed of the cold rolling unit, and controlling all the outlet cooling emulsion valves to be fully closed, and controlling the temperature of the emulsion cleaning tank to rise to 60 - 70°C. [[ID=十四]]

[0046] In one embodiment, controlling the opening degrees of the emulsion valves of all stands of the cold rolling unit according to the rolling speed of the cold rolling unit may include: if the rolling speed of the cold rolling unit is the first rolling speed, then controlling the opening degrees of the emulsion valves of all stands of the cold rolling unit to be 20% - 40%; if the rolling speed of the cold rolling unit is the second rolling speed, then controlling the opening degrees of the emulsion valves of all stands of the cold rolling unit to be 100%.

[0047] Optionally, the first rolling speed may be the shearing speed of continuous rolling, i.e., low - speed rolling; the first rolling speed may be more than 50% of the designed speed of the unit, i.e., high - speed rolling.

[0048] The inlet emulsion flow rate of all stands in the cold rolling mill varies with speed, i.e., low flow rate at low speed and high flow rate at high speed. By reducing the emulsion valve opening, the emulsion flow rate is reduced, thereby reducing the temperature drop of the emulsion on the strip. When the speed increases, the valve opening is increased to obtain good lubrication at high speed.

[0049] Furthermore, the opening degree also changes with the rolling speed, as do the inlet lubrication and roll cooling emulsion valves of all stands.

[0050] Specifically, in the warm rolling process control, the electromagnetic induction heater at the mill inlet is turned on to control the strip temperature entering the mill at 100~400℃. The opening degree of the inlet emulsion valves of the first to i-th stands (i≤n, where n is a natural number) of the cold rolling mill varies with the speed; that is, when the rolling speed is low, the valve is 20%-40% open, and when the rolling speed is high, the valve is 100% open. The outlet cooling emulsion valves are all closed, and the temperature of the emulsion cleaning tank is raised to 60-70℃. This control method achieves warm rolling and solves the problem of brittle strip breakage in high-grade silicon steel.

[0051] Step S102: During the rolling process, if it is identified that the rolling process mark of the current rolled steel coil is warm rolling process control and the rolling process mark of the next rolled steel coil is cold rolling process control, then the current rolling process is switched from the warm rolling process control to the cold rolling process control according to the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill.

[0052] Step S103: If the rolling process of the current rolled steel coil is identified as cold rolling process control, and the rolling process of the next rolled steel coil is identified as warm rolling process control, then the current rolling process is switched from cold rolling process control to warm rolling process control based on the distance between the weld of the next rolled steel coil and the first stand of the cold rolling mill.

[0053] It should be noted that, in this application, the weld of the currently rolled steel coil refers to the weld between the currently rolled steel coil and the previous rolled steel coil, and the weld of the next rolled steel coil refers to the weld between the currently rolled steel coil and the next rolled steel coil.

[0054] In a specific embodiment, switching the current rolling process from warm rolling process control to cold rolling process control based on the distance between the weld of the currently rolled steel coil and the last stand of the cold rolling mill can include: if it is detected that the weld of the currently rolled steel coil has traveled a first preset distance after passing the last stand of the cold rolling mill, the current rolling process is switched from warm rolling process control to cold rolling process control.

[0055] Optionally, the first preset distance is 20~50m.

[0056] Specifically, the rolling process of the current rolled steel coil is marked as 1, and the rolling process of the next rolled steel coil is marked as 0. When the weld of the current rolled steel coil has run for x meters (20 < x ≤ 50) after passing through the last stand of the cold rolling mill, the current rolling process is switched from warm rolling process control to cold rolling process control.

[0057] The process of switching the current rolling process from cold rolling process control to warm rolling process control can be based on the distance between the weld seam of the next coil to be rolled and the first stand of the cold rolling mill. This can include: if the distance between the weld seam of the next coil to be rolled and the first stand of the cold rolling mill is less than or equal to a second preset distance, the current rolling process can be switched from cold rolling process control to warm rolling process control.

[0058] Optionally, the second preset distance is 20~50m.

[0059] Specifically, when the current rolling process of the steel coil is marked as 0 and the rolling process of the next coil is marked as 1, and when there is still a difference of y meters (20 < y ≤ 50) between the weld of the next steel coil to be rolled and the first stand of the cold rolling mill, the current rolling process is switched from warm rolling process control to cold rolling process control.

[0060] If the rolling process markings of the current rolled steel coil and the next rolled steel coil are the same, the rolling process remains unchanged.

[0061] like Figure 2 The diagram shown is an automatic switching flowchart between warm rolling and cold rolling as illustrated in this application. The automatic switching method between warm rolling and cold rolling as described in this application will be explained below with specific examples:

[0062] 1. Rolling process markings

[0063] (1) Establish rolling process markings. When Si%≥3%, warm rolling process is adopted and marked as 1; when Si%<3%, cold rolling process is adopted and marked as 0.

[0064] (2) During order review, the rolling process mark is determined according to the silicon content and sent to the secondary automatic control system of cold rolling.

[0065] 2. Automatic timing switching

[0066] (1) The current rolling process of the steel coil is marked as 1, and the rolling process of the next coil is marked as 0. The weld seam is switched to cold rolling process 30 meters after the last stand of the cold rolling mill.

[0067] (2) The current rolling process of the steel coil is marked as 0, the rolling process of the next coil is marked as 1, and when the weld is 40 meters away from the first stand of the cold rolling mill, the process is switched to warm rolling.

[0068] (3) When the rolling process markings of the current coil and the next coil are the same, the temperature control remains unchanged.

[0069] 3. Rolling process control

[0070] (1) When the rolling process is marked as 1

[0071] 1) The electromagnetic induction heater at the mill inlet is turned on, and the temperature of the strip entering the mill is 400℃;

[0072] 2) The opening degree of the inlet emulsion valve of the first to third stands (n=6) of the cold rolling mill varies with the speed. That is, at low speed, the valve is 20%-40% open, at high speed the valve is 100% open, and the outlet cooling emulsion valve is completely closed.

[0073] 3) The temperature of the emulsion cleaning box is increased to 68℃;

[0074] The above control method is used to achieve warm rolling and solve the problem of brittle strip breakage in high-grade silicon steel.

[0075] (2) When the rolling process is marked as 0

[0076] 1) The electromagnetic induction heater at the mill inlet is turned off, and the temperature of the strip entering the mill is room temperature;

[0077] 2) The emulsion valve opening of the first to third stands of the cold rolling mill is 100% and does not change with the rolling speed. All outlet cooling emulsion valves are open, and a large flow of emulsion is used to ensure the cold rolling process.

[0078] 3) The temperature of the emulsion cleaning box drops to 53℃;

[0079] In summary, the automatic switching method between warm rolling and cold rolling provided by the embodiments of the present invention, by employing warm and cold rolling process indicators, automatic switching sequence, and rolling process control, solves the strip breakage problem caused by the transition between warm rolling and cold rolling processes when connecting medium and low grade silicon steel and high grade silicon steel. It realizes automatic switching rolling between warm rolling and cold rolling processes, meets the production requirements of rolling medium and low grade and high grade silicon steel in the same cold continuous rolling mill, and improves cold rolling stability.

[0080] Secondly, based on the same inventive concept, this embodiment provides an automatic switching device for warm rolling and cold rolling, such as... Figure 3 As shown, it includes:

[0081] The marking module 401 is used to mark the rolling process of each coil of steel to be rolled according to the steel grade information, wherein the rolling process marking includes warm rolling process control and cold rolling process control;

[0082] The first switching module 402 is used to switch the current rolling process from the warm rolling process control to the cold rolling process control if, during the rolling process, it is detected that the rolling process mark of the current rolled steel coil is warm rolling process control and the rolling process mark of the next rolled steel coil is cold rolling process control, based on the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill.

[0083] The second switching module 403 is used to switch the current rolling process from cold rolling process control to warm rolling process control if it is detected that the rolling process of the current rolled steel coil is marked as cold rolling process control and the rolling process of the next rolled steel coil is marked as warm rolling process control, based on the distance between the weld of the next rolled steel coil and the first stand of the cold rolling mill.

[0084] As an optional embodiment, the first switching module 402 is specifically used to: if it is detected that the weld of the currently rolled steel coil has traveled a first preset distance after passing the last stand of the cold rolling mill, switch the current rolling process from warm rolling process control to cold rolling process control.

[0085] As an optional embodiment, the second switching module 403 is specifically used to: if the distance between the weld of the next coil to be rolled and the first stand of the cold rolling mill is less than or equal to a second preset distance, switch the current rolling process from the cold rolling process control to the warm rolling process control.

[0086] As an optional embodiment, the marking module 401 is specifically used to: mark the rolling process of the steel coil to be rolled as warm rolling process control if the silicon content of the steel coil in the steel grade information is greater than or equal to a preset percentage; and mark the rolling process of the steel coil to be rolled as cold rolling process control if the silicon content of the steel coil in the steel grade information is less than the preset percentage.

[0087] As an optional embodiment, the cold rolling process control includes: controlling the electromagnetic induction heater at the mill inlet of the cold rolling mill to be closed, the opening degree of the inlet emulsion valve of all stands of the cold rolling mill to be 100%, and the outlet cooling emulsion valve of all stands to be fully opened, and controlling the temperature of the emulsion cleaning tank to drop to 50~60℃.

[0088] As an optional embodiment, the warm rolling process control includes: controlling the electromagnetic induction heater at the mill inlet of the cold rolling mill to turn on; controlling the opening degree of the inlet emulsion valve of all stands of the cold rolling mill according to the rolling speed of the cold rolling mill, and controlling all outlet cooling emulsion valves of all stands to be closed, and controlling the temperature of the emulsion cleaning tank to rise to 60~70°C.

[0089] As an optional embodiment, the warm rolling process control further includes: if the rolling speed of the cold rolling mill is the first rolling speed, then the opening degree of the emulsion valve of all stands of the cold rolling mill is controlled to be 20%~40%; if the rolling speed of the cold rolling mill is the second rolling speed, then the opening degree of the emulsion valve of all stands of the cold rolling mill is controlled to be 100%.

[0090] Each of the above modules can be implemented using software code, in which case they can be stored in the memory of the control device. Alternatively, each of the above modules can be implemented using hardware, such as integrated circuit chips.

[0091] The automatic switching device for warm rolling and cold rolling provided in this embodiment of the invention has the same implementation principle and technical effect as the aforementioned method embodiment. For the sake of brevity, any parts not mentioned in the device embodiment can be referred to the corresponding content in the aforementioned method embodiment.

[0092] Thirdly, based on the same inventive concept, this embodiment provides an electronic device 500, such as... Figure 4 As shown, it includes: a memory 501, a processor 502, and a computer program 503 stored in the memory and executable on the processor. When the processor 502 executes the program, it implements the steps of the automatic switching method between warm rolling and cold rolling described in the first aspect above.

[0093] Since the electronic device described in this embodiment is the electronic device used to implement the automatic switching method in the embodiments of this application, those skilled in the art can understand the specific implementation method and various variations of the electronic device in this embodiment based on the automatic switching method described in the embodiments of this application. Therefore, how the electronic device implements the method in the embodiments of this application will not be described in detail here. Any electronic device used by those skilled in the art to implement the automatic switching method in the embodiments of this application falls within the scope of protection of this application.

[0094] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, systems, or computer program products. Therefore, the present invention can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present invention 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.

[0095] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. 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 processor, 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, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A module that specifies the function in one or more boxes.

[0096] 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 modules implemented in a process. Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0097] 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.

[0098] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0099] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An automatic switching method between warm rolling and cold rolling, characterized in that, Applied to cold rolling mills, the method includes: Based on the steel grade information, each coil of steel to be rolled is marked with a rolling process mark, wherein the rolling process mark includes warm rolling process control and cold rolling process control; During the rolling process, if it is identified that the rolling process of the current rolled steel coil is marked as warm rolling process control, and the rolling process of the next rolled steel coil is marked as cold rolling process control, then the current rolling process is switched from the warm rolling process control to the cold rolling process control according to the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill. If the rolling process of the current rolled steel coil is identified as cold rolling process control, and the rolling process of the next rolled steel coil is identified as warm rolling process control, then the current rolling process is switched from cold rolling process control to warm rolling process control based on the distance between the weld of the next rolled steel coil and the first stand of the cold rolling mill.

2. The method as described in claim 1, characterized in that, The step of switching the current rolling process from warm rolling process control to cold rolling process control based on the distance between the weld seam of the currently rolled steel coil and the last stand of the cold rolling mill includes: If it is detected that the weld of the currently rolled steel coil has traveled a first preset distance after passing the last stand of the cold rolling mill, the current rolling process will be switched from warm rolling process control to cold rolling process control.

3. The method as described in claim 1, characterized in that, The step of switching the current rolling process from cold rolling process control to warm rolling process control based on the distance between the weld seam of the next coil to be rolled and the first stand of the cold rolling mill includes: If the distance between the weld seam of the next coil to be rolled and the first stand of the cold rolling mill is less than or equal to the second preset distance, the current rolling process will be switched from the cold rolling process control to the warm rolling process control.

4. The method as described in claim 1, characterized in that, The step of marking each coil of steel to be rolled according to its steel grade information includes: If the silicon content of the steel coil to be rolled is greater than or equal to the preset percentage in the steel grade information, then the rolling process of the steel coil to be rolled is marked as warm rolling process control. If the silicon content of the steel coil to be rolled is less than the preset percentage in the steel grade information, then the rolling process of the steel coil to be rolled is marked as cold rolling process control.

5. The method as described in claim 1, characterized in that, The cold rolling process control includes: The electromagnetic induction heater at the inlet of the cold rolling mill is turned off, the opening degree of the inlet emulsion valve of all stands of the cold rolling mill is 100%, and the outlet cooling emulsion valve of all stands is fully opened, and the temperature of the emulsion cleaning tank is controlled to drop to 50~60℃.

6. The method as described in claim 1, characterized in that, The warm rolling process control includes: The electromagnetic induction heater at the mill inlet of the cold rolling mill is turned on. The opening degree of the inlet emulsion valve of all stands of the cold rolling mill is controlled according to the rolling speed of the cold rolling mill, and the outlet cooling emulsion valve of all stands is controlled to be completely closed, and the temperature of the emulsion cleaning tank is controlled to rise to 60~70℃.

7. The method as described in claim 6, characterized in that, The control of the inlet emulsion valve opening degree of all stands of the cold rolling mill according to the rolling speed of the cold rolling mill includes: If the rolling speed of the cold rolling mill is the first rolling speed, then the opening degree of the inlet emulsion valve of all stands of the cold rolling mill should be controlled at 20%~40%. If the rolling speed of the cold rolling mill is the second rolling speed, then the opening degree of the inlet emulsion valve of all stands of the cold rolling mill is controlled to be 100%.

8. An automatic switching device for warm rolling and cold rolling, characterized in that, Applied to cold rolling mills, the device includes: The marking module is used to mark the rolling process of each coil of steel to be rolled according to the steel grade information, wherein the rolling process marking includes warm rolling process control and cold rolling process control; The first switching module is used to switch the current rolling process from the warm rolling process control to the cold rolling process control if, during the rolling process, it is detected that the rolling process of the current rolled steel coil is marked as warm rolling process control and the rolling process of the next rolled steel coil is marked as cold rolling process control, based on the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill. The second switching module is used to switch the current rolling process from cold rolling process control to warm rolling process control if it is detected that the rolling process of the current rolled steel coil is marked as cold rolling process control and the rolling process of the next rolled steel coil is marked as warm rolling process control, based on the distance between the weld of the next rolled steel coil and the first stand of the cold rolling mill.

9. An electronic device, characterized in that, include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the program, implements the steps of the method according to any one of claims 1-7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When executed by a processor, the program implements the steps of the method described in any one of claims 1-7.

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