Warm rolling and cold rolling automatic switching method, device and equipment and medium

Abstract

The invention discloses a warm rolling and cold rolling automatic switching method, device, equipment and medium, and the method comprises the steps that rolling process marking is conducted on a to-be-rolled steel coil according to steel grade information, and the rolling process marking comprises warm rolling process control and cold rolling process control; if it is recognized that the rolling process mark of the current rolled steel coil is warm rolling process control and the rolling process mark of the next to-be-rolled steel coil is cold rolling process control, the current rolling process is switched from the warm rolling process control to the cold rolling process control according to the distance between the welding seam of the current rolled steel coil and the tail rack of the cold rolling unit; and if it is recognized that the rolling process mark of the current rolled steel coil is cold rolling process control and the rolling process mark of the next to-be-rolled steel coil is warm rolling process control, the current rolling process is switched from the cold rolling process control to the warm rolling process control according to the distance between the welding seam of the next to-be-rolled steel coil and the first rack of the cold rolling unit.

Description

Technical Field

[0001] The invention relates to the technical field of strip steel rolling control, and in particular to an automatic switching method, device, equipment and medium for warm rolling and cold rolling. Background Art

[0002] Compared with the twenty-roller reversing mill, the cold rolling mill has a significant efficiency advantage. The new small-roller diameter cold rolling mill has gradually replaced the traditional five-stand mill and the twenty-roller reversing mill, and can produce medium-low grade and high-grade silicon steel at the same time. High-grade silicon steel is brittle at room temperature, so it requires warm rolling process; medium-low grade silicon steel has low silicon content and low deformation resistance, so conventional cold rolling process is sufficient. If medium-low grade silicon steel adopts warm rolling process, slipping will occur at high speed, and in severe cases, it will break; if high-grade silicon steel adopts cold rolling process, edge cracking and breaking will occur at low speed.

[0003] During the production process, combined with order scheduling, medium and low grade silicon steels are connected with high grade silicon steels, resulting in frequent changes in warm rolling and cold rolling processes. During traditional five-stand rolling, medium and low grade silicon steels are stably produced, and the brittle fracture rate is >15% when rolling high grade silicon steel. When rolling with a twenty-roll reversible rolling mill, high grade silicon steel is stably produced, but medium and low grade silicon steels slip and cannot be rolled stably. Summary of the invention

[0004] The embodiments of the present application provide a method, device, equipment and medium for automatic switching between warm rolling and cold rolling, and adopt automatic switching between warm rolling process and cold rolling process to solve the problem of strip breakage caused by the change of warm rolling process and cold rolling process when medium and low grade silicon steel is connected with high grade silicon steel, meet the production requirements of rolling medium and low grade and high grade silicon steel in the same cold rolling unit, and improve the cold rolling stability.

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

[0006] A method for automatically switching between warm rolling and cold rolling, applied to a cold rolling mill, comprising:

[0007] According to the steel grade information, each roll of steel to be rolled is respectively marked with a rolling process, 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 mark of the current rolled 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 the current rolled steel coil and 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;

[0009] If it is identified that the rolling process mark of the currently rolled 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, the current rolling process is switched from the cold rolling process control to the warm rolling process control according to the distance between the weld of the next steel coil to be rolled and the first frame of the cold rolling mill.

[0010] Preferably, 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 currently rolled steel coil and the last stand of the cold rolling mill, including: if it is monitored that the weld of the currently rolled steel coil has run a first preset distance after passing through the last stand rolling mill 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 current rolling process is switched from the cold rolling process control to the warm rolling process control according to the distance between the weld of the next steel coil to be rolled and the first frame of the cold rolling mill, including: if it is monitored that the distance between the weld of the next steel coil to be rolled and the first frame of the cold rolling mill is 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 rolling process marking is performed on each roll of steel coil to be rolled according to the steel grade information, including: if the silicon content of the steel coil in the steel grade information of the steel coil to be rolled is greater than or equal to a preset percentage, 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 of the steel coil to be rolled is less than the preset percentage, 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 rolling mill entrance of the cold rolling mill to be turned off, the inlet emulsion valve opening degree of all frames of the cold rolling mill to be 100%, and the outlet cooling emulsion valves of all frames to be fully opened, and controlling the temperature of the emulsion cleaning box to drop to 50-60°C.

[0014] Preferably, the warm rolling process control includes: controlling the electromagnetic induction heater at the rolling mill entrance of the cold rolling mill to turn on; controlling the opening degree of the inlet emulsion valves of all frames of the cold rolling mill according to the rolling speed of the cold rolling mill, and controlling the outlet cooling emulsion valves of all frames to be closed, and controlling the temperature of the emulsion cleaning box to rise to 60-70°C.

[0015] Preferably, the emulsion valve opening of all frames of the cold rolling mill is controlled according to the rolling speed of the cold rolling mill, including: if the rolling speed of the cold rolling mill is the first rolling speed, the emulsion valve opening of all frames of the cold rolling mill is controlled to be 20% to 40%; if the rolling speed of the cold rolling mill is the second rolling speed, the emulsion valve opening of all frames of the cold rolling mill is controlled to be 100%.

[0016] In a second aspect, the present invention provides the following technical solution through an embodiment of the present invention:

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

[0018] A marking module, used to mark the rolling process of each steel coil 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] A first switching module is used for, 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 roll of the steel coil to be rolled is cold rolling process control, then according to the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill, switching the current rolling process from the warm rolling process control to the cold rolling process control;

[0020] The second switching module is used to switch the current rolling process from the cold rolling process control to the warm rolling process control according to the distance between the weld of the next roll of steel coil to be rolled and the first frame of the cold rolling mill if it is identified that the rolling process mark of the current rolled steel coil is cold rolling process control and the rolling process mark of the next roll of steel coil to be rolled is warm rolling process control.

[0021] In a third aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0022] An electronic device comprises: a memory, a processor and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, the steps of any one of the methods described in the first aspect are implemented.

[0023] In a fourth aspect, the present invention provides the following technical solution through an embodiment of the present invention:

[0024] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the steps of any one of the methods described in the first aspect.

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

[0026] The automatic switching method between warm rolling and cold rolling provided in the embodiment of the present invention first marks the rolling process of each coil, that is, it is clear whether it is warm rolling process control or cold rolling process control. During the rolling process, if the rolling process control of the current rolled coil and the next coil to be rolled meets the switching requirements, the rolling process is switched according to the operation of the coil, so that the adjacent coils still have a good rolling effect, avoiding the quality problems of the coil caused by the mismatch between the rolling process and the coil characteristics and the inadequate switching timing. This application first marks the rolling process, and then adjusts the automatic switching timing of the cold rolling unit rolling process according to the process mark, and performs targeted rolling process control on the coil, which solves the problem of strip breakage caused by the conversion of the warm rolling process and the cold rolling process when the medium and low grade silicon steel is connected with the high grade silicon steel, realizes the automatic switching rolling between the warm rolling process and the cold rolling process, meets the production requirements of the medium and low grade and high grade silicon steel in the same cold rolling unit, and improves the cold rolling stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 Flow chart of the method for automatic switching between warm rolling and cold rolling in an embodiment of the present invention;

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

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

[0031] Figure 4 FIG. 4 is a schematic diagram of the structure of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION

[0032] The embodiments of the present application provide a method, device, equipment and medium for automatic switching between warm rolling and cold rolling, and adopt automatic switching between warm rolling process and cold rolling process to solve the problem of strip breakage caused by the change of warm rolling process and cold rolling process when medium and low grade silicon steel is connected with high grade silicon steel, meet the production requirements of rolling medium and low grade and high grade silicon steel in the same cold rolling unit, and improve the cold rolling stability.

[0033] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0034] A method for automatic switching between warm rolling and cold rolling is applied to a cold rolling unit, the method comprising: marking each roll of steel to be rolled according to steel grade information, wherein the rolling process marking comprises warm rolling process control and cold rolling process control; during the rolling process, if it is identified that the rolling process marking of the current rolled steel coil is warm rolling process control, and the rolling process marking of the next roll of steel coil to be rolled is cold rolling process control, then according to the distance between the weld of the current rolled steel coil and the last frame of the cold rolling unit, the current rolling process is switched from warm rolling process control to cold rolling process control; if it is identified that the rolling process marking of the current rolled steel coil is cold rolling process control, and the rolling process marking of the next roll of steel coil to be rolled is warm rolling process control, then according to the distance between the weld of the next roll of steel coil to be rolled and the first frame of the cold rolling unit, the current rolling process is switched from cold rolling process control to warm rolling process control.

[0035] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] In a first aspect, an automatic switching method between warm rolling and cold rolling provided by an embodiment of the present invention is applied to a cold rolling mill. Specifically, Figure 1 As shown, the method includes the following steps S101 to S104:

[0037] Step S101, performing rolling process marking on each steel coil to be rolled according to the steel type information, wherein the rolling process marking 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] Among them, the steel grade information includes the silicon content of the steel coil. According to the silicon content in the steel grade information, each roll of the steel coil to be rolled is marked with a rolling process. Specifically, the user's order information includes the production grade, the grade corresponds to the steel grade, and the steel grade corresponds to the silicon content, so the order and the silicon content can correspond. When reviewing the order, 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 the cold rolling.

[0040] In this embodiment, according to the steel grade information, the rolling process marking is performed on each roll of steel to be rolled, which may include: if the silicon content of the steel roll in the steel grade information of the steel roll to be rolled is greater than or equal to a preset percentage, the rolling process of the steel roll to be rolled is marked as warm rolling process control; if the silicon content of the steel roll in the steel grade information of the steel roll to be rolled is less than the preset percentage, the rolling process of the steel roll to be rolled is marked as cold rolling process control. Optionally, the preset percentage may be 3%, that is, the silicon content accounts for 3% of the steel roll.

[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 mill unit to be closed, the opening degree of the inlet emulsion valves of all stands of the cold rolling mill 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 be maximized and using a large flow rate 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 the cold rolling process control, the electromagnetic induction heater at the entrance of the rolling mill is turned off, the strip inlet temperature to 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 mill 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 kind of cold rolling process control, the stable rolling of the strip by the cold rolling mill 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 mill unit to be turned on; controlling the opening degrees of the inlet emulsion valves of all stands of the cold rolling mill unit according to the rolling speed of the cold rolling mill 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.

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

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

[0048] The emulsion flow rate at the inlet of all stands of the cold rolling mill changes with the speed, that is, small flow rate at low speed and large 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 in order to obtain good lubricity at high speed.

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

[0050] Specifically, during the warm rolling process control, the electromagnetic induction heater at the mill entrance is turned on to control the temperature of the strip entering the mill to be 100-400°C, and the opening degree of the inlet emulsion valve of the 1st to ith stands (i≤n, n is a natural number) of the cold rolling unit changes with the speed, that is, when the rolling speed is low, the valve opening degree is 20%-40%, and when the rolling speed is high, the valve opening degree is 100%, the outlet cooling emulsion valve is completely closed, and the temperature of the emulsion cleaning box is increased to 60-70°C. The above control is adopted to realize warm rolling and solve the problem of brittle strip breakage of 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 steel coil to be rolled is cold rolling process control, then according to the distance between the weld of the current rolled steel coil and 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;

[0052] Step S103, if it is identified that the rolling process mark of the currently rolled steel coil is cold rolling process control, and the rolling process mark of the next roll of steel coil to be rolled is warm rolling process control, then according to the distance between the weld of the next roll of steel coil to be rolled and the first frame of the cold rolling mill, the current rolling process is switched from the cold rolling process control to the warm rolling process control.

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

[0054] In a specific embodiment, according to the distance between the weld of the currently rolled steel coil and the last stand of the cold rolling mill, the current rolling process is switched from warm rolling process control to cold rolling process control, which may include: if it is monitored that the weld of the currently rolled steel coil has run a first preset distance after passing through the last stand rolling mill 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 mark of the currently rolled steel coil is 1, the rolling process mark of the next steel coil to be rolled is 0, and after the weld of the currently rolled steel coil passes through the last stand mill of the cold rolling unit and runs for x meters (20<x≤50), the current rolling process is switched from warm rolling process control to cold rolling process control.

[0057] According to the distance between the weld of the next steel coil to be rolled and the first frame of the cold rolling mill, the current rolling process is switched from cold rolling process control to warm rolling process control, which may include: if it is monitored that the distance between the weld of the next steel coil to be rolled and the first frame of the cold rolling mill is less than or equal to a second preset distance, the current rolling process is switched from cold rolling process control to warm rolling process control.

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

[0059] Specifically, the rolling process mark of the current steel coil is 0, the rolling process mark of the next coil is 1, and when there is a distance of y meters (20<y≤50) between the weld of the next steel coil to be rolled and the first frame 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 mark of the currently rolled steel coil is the same as that of the next steel coil to be rolled, the rolling process remains unchanged.

[0061] like Figure 2 As shown, it is a flowchart of automatic switching between warm rolling and cold rolling shown in this application. The automatic switching method between warm rolling and cold rolling pointed out in this application is described below with reference to specific examples:

[0062] 1. Rolling process marking

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

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

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

[0068] (3) When the rolling process mark of the current steel coil is the same as that of the next coil, the temperature control remains unchanged.

[0069] 3. Rolling process control

[0070] (1) When the rolling process mark is 1

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

[0072] 2) The opening degree of the inlet emulsion valve of the 1st to 3rd stands (n=6) of the cold rolling mill changes with the speed, that is, at low speed, the valve opening degree is 20%-40%, at high speed, the valve opening degree is 100%, and the outlet cooling emulsion valve is completely closed;

[0073] 3) The temperature of the emulsion cleaning box is raised to 68°C;

[0074] The above control is adopted to realize warm rolling and solve the problem of brittle band breakage of high-grade silicon steel.

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

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

[0077] 2) The emulsion valve opening degree of the 1st to 3rd stands of the cold rolling unit is 100%, which does not change with the rolling speed. The outlet cooling emulsion valves are all 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°C;

[0079] In summary, an automatic switching method between warm rolling and cold rolling provided by an embodiment of the present invention adopts warm rolling and cold rolling process marks, automatic switching timing and rolling process control, which solves the problem of strip breakage caused by the change of warm rolling process and cold rolling process when medium and low grade silicon steel is connected with high grade silicon steel, realizes the automatic switching rolling between warm rolling process and cold rolling process, meets the production requirements of medium and low grade and high grade silicon steel rolling in the same cold rolling unit, and improves the cold rolling stability.

[0080] In the second aspect, based on the same inventive concept, this embodiment provides an automatic switching device between warm rolling and cold rolling, such as Figure 3 As shown, including:

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

[0082] The first switching module 402 is used for, 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 steel coil to be rolled is cold rolling process control, then according to the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill, switching the current rolling process from the warm rolling process control to the cold rolling process control;

[0083] The second switching module 403 is used to switch the current rolling process from the cold rolling process control to the warm rolling process control according to the distance between the weld of the next roll of steel coil to be rolled and the first frame of the cold rolling mill if it is identified that the rolling process mark of the current rolled steel coil is cold rolling process control and the rolling process mark of the next roll of steel coil to be rolled is warm rolling process control.

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

[0085] As an optional embodiment, the second switching module 403 is specifically used to: if it is monitored that the distance between the weld of the next roll of steel to be rolled and the first frame of the cold rolling mill is less than or equal to the 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: if the silicon content of the steel coil in the steel type information of the steel coil to be rolled 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 type information of the steel coil to be rolled is less than the preset percentage, then the rolling process of the steel coil to be rolled is marked as cold rolling process control.

[0087] As an optional embodiment, the cold rolling process control includes: controlling the electromagnetic induction heater at the rolling mill entrance of the cold rolling mill to be turned off, the inlet emulsion valve opening degree of all frames of the cold rolling mill to be 100%, and the outlet cooling emulsion valves of all frames to be fully opened, and controlling the temperature of the emulsion cleaning box to drop to 50-60°C.

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

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

[0090] The above modules can be implemented by software codes, in which case, the above modules can be stored in the memory of the control device. The above modules can also be implemented by hardware such as integrated circuit chips.

[0091] An automatic switching device for warm rolling and cold rolling provided in an embodiment of the present invention has the same implementation principle and technical effects as those in the aforementioned method embodiment. For the sake of brief description, for matters not mentioned in the device embodiment, reference may be made to the corresponding contents in the aforementioned method embodiment.

[0092] In a third aspect, 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, the steps of the automatic switching method between warm rolling and cold rolling described in the first aspect are implemented.

[0093] Since the electronic device introduced in this embodiment is an electronic device used to implement the automatic switching method in the embodiment of the present application, based on the automatic switching method introduced in the embodiment of the present application, a person skilled in the art can understand the specific implementation of the electronic device of the present embodiment and its various variations, so how the electronic device implements the method in the embodiment of the present application is not described in detail here. As long as a person skilled in the art implements the electronic device used in the automatic switching method in the embodiment of the present application, it belongs to the scope of protection of this application.

[0094] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented 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] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A module that specifies functions in one or more boxes.

[0096] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory produce a manufactured product including an instruction module, which is implemented in the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0097] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0098] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0099] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A method for automatic switching between warm rolling and cold rolling, characterized in that: Applied to a cold rolling mill, the method comprises: According to the steel grade information, each roll of steel to be rolled is respectively marked with a rolling process, 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 mark of the current rolled 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 the current rolled steel coil and 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; If it is identified that the rolling process mark of the currently rolled 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, the current rolling process is switched from the cold rolling process control to the warm rolling process control according to the distance between the weld of the next steel coil to be rolled and the first frame of the cold rolling mill.

2. The method according to claim 1, characterized in that The method of switching the current rolling process from the warm rolling process control to the 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 comprises: If it is monitored that the weld of the currently rolled steel coil has run a first preset distance after passing through the last stand rolling mill of the cold rolling mill group, the current rolling process is switched from warm rolling process control to cold rolling process control.

3. The method according to claim 1, characterized in that The method of switching the current rolling process from the cold rolling process control to the warm rolling process control according to the distance between the weld of the next steel coil to be rolled and the first frame of the cold rolling mill comprises: If it is monitored that the distance between the weld of the next steel coil to be rolled and the first frame of the cold rolling mill is less than or equal to the second preset distance, the current rolling process is switched from the cold rolling process control to the warm rolling process control.

4. The method according to claim 1, characterized in that According to the steel grade information, each roll of steel to be rolled is marked with a rolling process, including: If the silicon content of the steel coil in the steel type information of the steel coil to be rolled is greater than or equal to the preset percentage, 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 type information of the steel coil to be rolled is less than the preset percentage, the rolling process of the steel coil to be rolled is marked as cold rolling process control.

5. The method according to claim 1, characterized in that The cold rolling process control includes: The electromagnetic induction heater at the entrance of the cold rolling mill is controlled to be closed, the inlet emulsion valve opening degree of all frames of the cold rolling mill is 100%, and the outlet cooling emulsion valves of all frames are all opened, and the temperature of the emulsion cleaning box is controlled to drop to 50-60℃.

6. The method according to claim 1, characterized in that The warm rolling process control includes: Control the electromagnetic induction heater at the rolling mill entrance of the cold rolling mill to start; According to the rolling speed of the cold rolling mill, the opening degree of the inlet emulsion valve of all the frames of the cold rolling mill is controlled, and the outlet cooling emulsion valves of all the frames are controlled to be closed, and the temperature of the emulsion cleaning box is controlled to rise to 60-70°C.

7. The method according to claim 6, characterized in that The method of controlling the emulsion valve opening of all the stands of the cold rolling mill according to the rolling speed of the cold rolling mill comprises: If the rolling speed of the cold rolling mill is the first rolling speed, the emulsion valve openings of all the stands of the cold rolling mill are controlled to be 20% to 40%; If the rolling speed of the cold rolling mill is the second rolling speed, the emulsion valve openings of all the stands of the cold rolling mill are controlled to be 100%.

8. An automatic switching device for warm rolling and cold rolling, characterized in that: Applied to a cold rolling mill, the device comprises: A marking module, used to mark each roll 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; A first switching module is used for, 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 roll of the steel coil to be rolled is cold rolling process control, then according to the distance between the weld of the current rolled steel coil and the last stand of the cold rolling mill, switching the current rolling process from the warm rolling process control to the cold rolling process control; The second switching module is used to switch the current rolling process from the cold rolling process control to the warm rolling process control according to the distance between the weld of the next roll of steel coil to be rolled and the first frame of the cold rolling mill if it is identified that the rolling process mark of the current rolled steel coil is cold rolling process control and the rolling process mark of the next roll of steel coil to be rolled is warm rolling process control.

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 implements the steps of the method according to any one of claims 1 to 7 when executing the program.

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

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