Thin-gauge electrical steel cold continuous rolling method and device and storage medium

Abstract

The invention belongs to the technical field of thin-gauge electrical steel, and relates to a thin-gauge electrical steel cold continuous rolling method and device and a storage medium. The reduction rate of the first two racks is controlled; the reduction rate of a tail rack is controlled; lubricity parameters are controlled; the flattening rate of a working roller of the tail rack is controlled; and the edge drop parameter of the S1 rack is controlled. According to the thin-specification electrical steel cold continuous rolling method and device and the storage medium, the problem that thin-specification electrical steel cannot be rolled through existing cold continuous rolling is solved, and the purpose of improving the yield of high-grade electrical steel is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of thin-gauge electrical steel, and in particular to a method, a device and a storage medium for cold continuous rolling of thin-gauge electrical steel. Background Art

[0002] Thin-gauge electrical steel has high deformation resistance and thin finished product thickness. Electrical steel manufacturers generally use twenty-roll Sendzimir mills to roll it, but its production efficiency is low and cannot meet the rapidly growing market demand, so improvements are needed. Summary of the invention

[0003] In view of this, the present invention provides a method, device and storage medium for cold tandem rolling of thin-gauge electrical steel.

[0004] Specifically, the present invention is achieved through the following technical solutions:

[0005] According to a first aspect of the present invention, there is provided a method for cold tandem rolling of thin gauge electrical steel, the method comprising the steps of:

[0006] Obtain thin gauge electrical steel;

[0007] Control the pressing rate of the first two racks;

[0008] Control the final stand pressing rate;

[0009] Control lubricity parameters;

[0010] Control the flattening rate of the working rolls of the final stand;

[0011] Controls the S1 rack side drop parameters.

[0012] Optionally, the silicon content of the thin-gauge electrical steel is 3.0-4.0%, the raw material thickness is 2.0-2.8 mm, the finished product thickness is 0.15-0.3 mm, the total reduction rate is 85%-93%, and the deformation resistance is 1100-1500 MPa.

[0013] Optionally, controlling the pressing rate of the first two racks comprises the steps of:

[0014] Control the pressing rate of S1 and S2 racks to 35%-43%;

[0015] Control the deformation heat rise of S1 and S2 racks to 80-150℃;

[0016] Control the heating temperature before rolling to 100-200℃;

[0017] The outlet temperature of the S1 and S2 racks is controlled to be 180℃-350℃.

[0018] Optionally, controlling the final stand pressing rate comprises the steps of:

[0019] Control the outlet temperature of the final rack to 100-120℃;

[0020] Control the final rack pressing rate to 8%-20%;

[0021] Control the temperature of the cold rolled coil to be less than or equal to 120℃.

[0022] Optionally, the controlling lubricity parameters comprises the steps of:

[0023] Add emulsion at a concentration of 5-15%;

[0024] Add rolling oil with a particle size of 10-20um;

[0025] Add 2-5% concentration of extreme pressure agent.

[0026] Optionally, controlling the flattening rate of the working roll of the final stand comprises the steps of:

[0027] Control the flattening rate of the working roll of the last stand to 3.0-5.5.

[0028] Optionally, the controlling of the S1 rack edge drop parameters comprises the steps of:

[0029] Control the bending force of the working roll of the S1 frame to -2-10ton;

[0030] Control the bending force of the middle roll of the S1 frame to 10-25 ton;

[0031] Control the straightness difference between the edge and middle of the S1 rack outlet to be 50-100IU.

[0032] According to a second aspect of the present invention, there is provided a thin gauge electrical steel cold rolling device, comprising:

[0033] an acquisition module for acquiring thin gauge electrical steel;

[0034] Front pressing rate control module, used to control the pressing rate of the front two racks;

[0035] The final pressing rate control module is used to control the final rack pressing rate;

[0036] A parameter control module for controlling lubricity parameters;

[0037] Flattening rate control module, used to control the flattening rate of the working roll of the last stand;

[0038] The edge reduction parameter control module is used to control the edge reduction parameters of the S1 rack.

[0039] According to a third aspect of the present invention, there is provided an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of any of the aforementioned methods when executing the program.

[0040] According to a fourth aspect of the present invention, there is provided a storage medium having a computer program stored thereon, wherein the program, when executed by a processor, implements the steps of any one of the aforementioned methods.

[0041] The technical solution provided by the present invention brings at least the following beneficial effects:

[0042] The present application provides a method, device and storage medium for cold rolling of thin-gauge electrical steel, which solves the problem that current cold rolling cannot produce thin-gauge electrical steel, thereby achieving the purpose of increasing the production capacity of high-grade electrical steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0045] Figure 1 A schematic flow chart of a method for cold rolling thin-gauge electrical steel provided in an embodiment of the present invention;

[0046] Figure 2 A schematic structural diagram of a thin-gauge electrical steel cold rolling device provided in an embodiment of the present invention;

[0047] Figure 3 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention;

[0048] Figure 4 A schematic diagram of the structure of a storage medium provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Figure 1 The schematic diagram shows a flow chart of a method for cold continuous rolling of thin-gauge electrical steel applicable to an embodiment of the present invention.

[0051] See also Figure 1 The embodiment of the present invention provides a method for cold rolling of thin-gauge electrical steel. The method can be applied to electronic devices, such as PCs, servers, terminals, etc. The method may include the following steps:

[0052] S1: Obtain thin gauge electrical steel;

[0053] Illustratively, the thin-gauge electrical steel applicable to the cold rolling method provided in the present application needs to meet the following specifications: the silicon content of the thin-gauge electrical steel is 3.0-4.0%, the raw material thickness is 2.0-2.8mm, the finished product thickness is 0.15-0.3mm, the total reduction rate is 85%-93%, and the deformation resistance is 1100-1500MPa.

[0054] S2: Control the pressing rate of the first two racks;

[0055] Exemplarily, the controlling the pressing rate of the first two racks comprises the steps of:

[0056] Control the pressing rate of S1 and S2 racks to 35%-43%;

[0057] Control the deformation heat rise of S1 and S2 racks to 80-150℃;

[0058] Control the heating temperature before rolling to 100-200℃;

[0059] The outlet temperature of the S1 and S2 racks is controlled to be 180℃-350℃.

[0060] In the embodiment of the present application, the reduction rate of the S1 and S2 frames is 35-43%. The reduction rate of the front frame is increased, so that the deformation heat temperature rise of the S1 and S2 frames reaches 80-150°C. Under the working condition of the pre-rolling heating temperature of 100-200°C, the outlet temperature of the S1 and S2 frames reaches 180°C-350°C, thereby reducing the yield strength of the material by 5-13% compared with 100°C.

[0061] S3: Control the pressing rate of the last stand;

[0062] Exemplarily, the controlling the last stand pressing rate comprises the steps of:

[0063] Control the outlet temperature of the final rack to 100-120℃;

[0064] Control the final rack pressing rate to 8%-20%;

[0065] Control the temperature of the cold rolled coil to be less than or equal to 120℃.

[0066] In the embodiment of the present application, the control range of the final rack outlet temperature is 100-120°C; the final rack reduction rate is 8%-20%, and the temperature and reduction rate are coupled to control the final rack reduction rate. As the reduction rate increases, the lubricity becomes better and the deformation heat increases. Considering the allowable temperature of the outlet equipment, the temperature of the cold hard coil must be controlled within 120°C, so the reduction rate cannot be too large.

[0067] S4: Control lubricity parameters;

[0068] Exemplarily, the controlling lubricity parameters comprises the steps of:

[0069] Add emulsion at a concentration of 5-15%;

[0070] Add rolling oil with a particle size of 10-20um;

[0071] Add 2-5% extreme pressure agent.

[0072] In the embodiments of the present application, the concentration of the emulsion is 5-15%, and the higher the concentration, the better the lubricity; the particle size of the rolling oil is 10-20um, and the appropriate particle size takes into account the lubricity of high-speed and low-speed rolling; adding an extreme pressure agent at a concentration of 2-5% can enhance the strength of the oil film and comprehensively reduce the friction coefficient, which is suitable for thin-gauge rolling, so that the friction coefficient reaches 0.015-0.03. A large friction coefficient leads to a large rolling force and poor plate shape. In severe cases, the rolling mill may vibrate and break the belt.

[0073] S5: Control the flattening rate of the working roll of the last stand;

[0074] Exemplarily, the controlling of the flattening rate of the working roll of the final stand comprises the steps of:

[0075] Control the flattening rate of the working roll of the last stand to 3.0-5.5.

[0076] In the embodiment of the present application, the flattening rate of the working roll of the last stand is controlled to be 3.0-5.5. Since the flattening rate of the working roll = the flattening radius of the working roll / the radius of the working roll, the smaller the flattening rate of the working roll, the more stable the thin-gauge rolling.

[0077] S6: Control the S1 rack side drop parameters.

[0078] Exemplarily, the controlling of the S1 rack edge drop parameters comprises the steps of:

[0079] Control the bending force of the working roll of the S1 frame to -2-10ton;

[0080] Control the bending force of the middle roll of the S1 frame to 10-25 ton;

[0081] Control the straightness difference between the edge and middle of the S1 rack outlet to be 50-100IU.

[0082] In the embodiment of the present application, the plate shape at the outlet of the S1 frame is controlled, the bending force of the working roll of the S1 frame is controlled to be -2-10ton, the bending force of the intermediate roll of S1 is controlled to be 10-25ton, the straightness difference between the edge and the middle of the S1 outlet is controlled to be 50-100IU, and the straightness within 130mm of the edge of the strip is kept consistent, so that the transverse thickness difference control capability of the S1 frame is fully utilized, so that the proportion of the transverse thickness difference of the entire length of the finished product ≤5um is greater than 90%.

[0083] like Figure 2 The present application provides a thin-gauge electrical steel cold rolling device, comprising:

[0084] An acquisition module 10, for acquiring thin gauge electrical steel;

[0085] The front pressing rate control module 20 is used to control the pressing rates of the front two racks;

[0086] The final pressing rate control module 30 is used to control the final stand pressing rate;

[0087] A parameter control module 40, for controlling lubricity parameters;

[0088] A flattening rate control module 50 is used to control the flattening rate of the working rolls of the final stand;

[0089] The edge reduction parameter control module 60 is used to control the edge reduction parameters of the S1 rack.

[0090] The present application provides a thin-gauge electrical steel cold rolling device that can execute a thin-gauge electrical steel cold rolling method provided by the above steps.

[0091] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

[0092] Reference below Figure 3, which shows a schematic diagram of the structure of an electronic device 100 suitable for implementing the embodiment of the present disclosure. The electronic device in the embodiment of the present disclosure may include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle terminals (such as vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 3 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0093] like Figure 3 As shown, the electronic device 100 may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 101, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 102 or a program loaded from a storage device 108 to a random access memory (RAM) 103. In the RAM 103, various programs and data required for the operation of the electronic device 100 are also stored. The processing device 101, the ROM 102, and the RAM 103 are connected to each other via a bus 104. An input / output (I / O) interface 105 is also connected to the bus 104.

[0094] Typically, the following devices may be connected to the I / O interface 105: an input device 106 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 107 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 108 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 109. The communication device 109 may allow the electronic device 100 to communicate with other devices wirelessly or by wire to exchange data. Although the electronic device 100 having various devices is shown in the figure, it should be understood that it is not required to implement or have all the devices shown. More or fewer devices may be implemented or have alternatively.

[0095] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device 109, or installed from the storage device 108, or installed from the ROM 102. When the computer program is executed by the processing device 101, the above-mentioned functions defined in the method of the embodiment of the present disclosure are executed.

[0096] Reference below Figure 4, which shows a structural schematic diagram of a computer-readable storage medium suitable for implementing an embodiment of the present disclosure, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it can implement the thin-gauge electrical steel cold rolling method as described in any of the above.

[0097] The present application also provides a computer program product, which includes a computer program / computer executable instructions, and when the computer program / computer executable instructions are executed by a processor of an electronic device, the steps of any of the aforementioned thin-gauge electrical steel cold rolling methods are implemented.

[0098] The present application provides a method, device and storage medium for cold rolling of thin-gauge electrical steel, which solves the problem that current cold rolling cannot produce thin-gauge electrical steel, thereby achieving the purpose of increasing the production capacity of high-grade electrical steel.

[0099] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0100] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for cold rolling thin-gauge electrical steel, characterized in that: The method comprises the steps of: Obtain thin gauge electrical steel; Control the pressing rate of the first two racks; Control the final stand pressing rate; Control lubricity parameters; Control the flattening rate of the working rolls of the final stand; Controls the S1 rack side drop parameters.

2. The method for cold rolling thin-gauge electrical steel according to claim 1, characterized in that: The silicon content of the thin-gauge electrical steel is 3.0-4.0%, the raw material thickness is 2.0-2.8 mm, the finished product thickness is 0.15-0.3 mm, the total reduction rate is 85%-93%, and the deformation resistance is 1100-1500 MPa.

3. The method for cold rolling thin-gauge electrical steel according to claim 1, characterized in that: The control of the first two rack pressing rates comprises the following steps: Control the pressing rate of S1 and S2 racks to 35%-43%; Control the deformation heat rise of S1 and S2 racks to 80-150℃; Control the heating temperature before rolling to 100-200℃; The outlet temperature of the S1 and S2 racks is controlled to be 180℃-350℃.

4. The method for cold rolling thin-gauge electrical steel according to claim 1, characterized in that: The control of the final stand pressing rate comprises the steps of: Control the outlet temperature of the final rack to 100-120℃; Control the final rack pressing rate to 8%-20%; Control the temperature of the cold rolled coil to be less than or equal to 120℃.

5. The method for cold rolling thin-gauge electrical steel according to claim 1, characterized in that: The controlling of lubricity parameters comprises the steps of: Add emulsion at a concentration of 5-15%; Add rolling oil with a particle size of 10-20um; Add 2-5% concentration of extreme pressure agent.

6. The method for cold tandem rolling of thin gauge electrical steel according to claim 1, characterized in that: The control of the flattening rate of the working roll of the final stand comprises the following steps: Control the flattening rate of the working roll of the last stand to 3.0-5.

5.

7. The method for cold rolling thin-gauge electrical steel according to claim 1, characterized in that: The control of the S1 rack edge drop parameters comprises the steps of: Control the bending force of the working roll of the S1 frame to -2-10ton; Control the bending force of the middle roll of the S1 frame to 10-25 ton; The straightness difference between the edge and the middle of the S1 rack outlet is controlled to be 50-100IU.

8. A thin gauge electrical steel cold rolling device, characterized in that: include: an acquisition module for acquiring thin gauge electrical steel; Front pressing rate control module, used to control the pressing rate of the front two racks; The final pressing rate control module is used to control the final rack pressing rate; A parameter control module for controlling lubricity parameters; Flattening rate control module, used to control the flattening rate of the working roll of the last stand; The edge reduction parameter control module is used to control the edge reduction parameters of the S1 rack.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the method according to any one of claims 1 to 7 are implemented.

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

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