Raw material steel coil cold rolling method and device and storage medium

Abstract

The invention belongs to the field of steel coil cold rolling, and relates to a raw material steel coil cold rolling method and device and a storage medium. Performing edge quality grading on the raw material steel coil according to the edge quality morphology; and carrying out cold rolling on the raw material steel coil according to the edge part quality judgment grade. According to the raw material steel coil cold rolling method and device and the storage medium, the problem that when a cold continuous rolling unit rolls a material with the room-temperature brittleness characteristic, due to poor edge quality, a rolled strip is broken is solved, and the purpose of improving the rolling stability of the cold continuous rolling unit is achieved.

Description

Technical Field

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

[0002] Edge quality is one of the key factors affecting the stability of plate and strip rolling, especially for materials that are brittle at room temperature. During rolling, the cold rolling mill occasionally breaks the strip due to poor edge quality of the raw steel coil, affecting product production efficiency and yield rate, 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 rolling a raw steel coil.

[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 rolling a raw steel coil, the method comprising the steps of:

[0006] Obtain the edge quality morphology of the raw steel coil;

[0007] grading the edge quality of the raw steel coil according to the edge quality morphology;

[0008] The raw steel coil is cold rolled according to the edge quality grading.

[0009] Optionally, the step of obtaining the edge quality morphology of the raw steel coil comprises the following steps:

[0010] Determining an edge observation area of ​​the raw steel coil;

[0011] The number of cracks in the edge observation area is calculated.

[0012] Optionally, the step of grading the edge quality of the raw steel coil according to the edge quality morphology comprises the following steps:

[0013] Obtaining the number of cracks in the edge quality morphology;

[0014] Determining whether the number of cracks is equal to 0;

[0015] If so, the edge quality is determined to be level 1 quality;

[0016] If not, determining whether the number of cracks is less than or equal to a first threshold;

[0017] If yes, the edge quality is determined to be level 2 quality;

[0018] If not, determining whether the number of cracks is less than or equal to a second threshold;

[0019] If yes, the edge quality is determined to be level 3 quality;

[0020] If not, the edge quality is determined to be level 4 quality;

[0021] Wherein, the first threshold value and the second threshold value are both non-zero integers, and the first threshold value is less than the second threshold value. Optionally, the cold rolling of the raw steel coil according to the edge quality grading comprises the steps of:

[0022] Determine whether the edge quality is equal to 1;

[0023] If yes, cold rolling the raw steel coil using level 1 rolling parameters;

[0024] If not, determine whether the edge quality is equal to 2;

[0025] If yes, cold rolling the raw steel coil using level 2 rolling parameters;

[0026] If not, determine whether the edge quality is equal to 3;

[0027] If yes, cold rolling the raw steel coil using level 3 rolling parameters;

[0028] If not, the raw steel coil is cold rolled using level 4 rolling parameters.

[0029] Optionally, the cold rolling of the raw steel coil using the level 1 rolling parameters comprises the following steps:

[0030] Control the maximum rolling speed of cold tandem rolling to full speed;

[0031] Control the plate shape of each rack to be slightly medium wave;

[0032] Control the straightness of the outermost channel to -20-(-5)I-Unit;

[0033] Control the total reduction rate to be less than or equal to 96%.

[0034] Optionally, the cold rolling of the raw steel coil using the level 2 rolling parameters comprises the following steps:

[0035] Control the maximum rolling speed of cold rolling to 75%-90% of the full speed;

[0036] Control the plate shape of each rack to be micro-edge wave;

[0037] Control the straightness of the outermost channel to 0-10I-Unit;

[0038] Control the total reduction rate to be less than or equal to 93%.

[0039] Optionally, the cold rolling of the raw steel coil using three-level rolling parameters comprises the following steps:

[0040] Control the maximum rolling speed of cold rolling to 50%-70% of the full speed;

[0041] Control the plate shape of each rack to be micro-edge wave;

[0042] Control the straightness of the most side channel to 10-20I-Unit;

[0043] Control the total reduction rate to be less than or equal to 90%.

[0044] Optionally, the cold rolling of the raw steel coil using 4-level rolling parameters comprises the following steps:

[0045] Control the cold rolling speed to full speed;

[0046] Control the plate shape of each rack to be slightly medium wave;

[0047] Control the straightness of the outermost channel to -20-(-5)I-Unit;

[0048] Control the total reduction rate to be less than or equal to 96%.

[0049] According to a second aspect of the present invention, there is provided a raw steel coil cold rolling device, comprising:

[0050] The quality morphology acquisition module is used to obtain the edge quality morphology of the raw steel coil;

[0051] An edge quality grading module, used for grading the edge quality of the raw steel coil according to the edge quality morphology;

[0052] The steel coil cold rolling module is used to cold roll the raw steel coil according to the edge quality grading.

[0053] According to a third 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.

[0054] The technical solution provided by the present invention brings at least the following beneficial effects:

[0055] The present application provides a method, device and storage medium for cold rolling of raw steel coils, which solves the problem of strip breakage caused by poor edge quality when a cold rolling mill rolls materials with room temperature brittleness, thereby achieving the purpose of improving the rolling stability of the cold rolling mill. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] 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.

[0057] 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.

[0058] Figure 1 A schematic diagram of a process for cold rolling a raw steel coil provided in an embodiment of the present invention;

[0059] Figure 2 A schematic structural diagram of a raw steel coil cold rolling device provided in an embodiment of the present invention;

[0060] Figure 3 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention;

[0061] Figure 4 A schematic diagram of the structure of a storage medium provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0062] 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.

[0063] Figure 1 A schematic flow chart of a raw steel coil cold rolling method applicable to an embodiment of the present invention is shown schematically.

[0064] See also Figure 1 The embodiment of the present invention provides a method for cold rolling a raw steel coil, which can be applied to electronic devices such as PCs, servers, terminals, etc. The method may include the following steps:

[0065] S1: Obtain the edge quality morphology of the raw steel coil;

[0066] Exemplarily, the step of obtaining the edge quality morphology of the raw steel coil comprises the following steps:

[0067] Determining an edge observation area of ​​the raw steel coil;

[0068] The number of cracks in the edge observation area is calculated.

[0069] In an embodiment of the present application, an image acquisition device is used to obtain the number of cracks within a preset length range of the edge of the raw steel coil (ie, the edge observation area).

[0070] S2: grading the edge quality of the raw steel coil according to the edge quality morphology;

[0071] Exemplarily, the step of grading the edge quality of the raw steel coil according to the edge quality morphology comprises the following steps:

[0072] Obtaining the number of cracks in the edge quality morphology;

[0073] Determining whether the number of cracks is equal to 0;

[0074] If so, the edge quality is determined to be level 1 quality;

[0075] If not, determining whether the number of cracks is less than or equal to a first threshold;

[0076] If yes, the edge quality is determined to be level 2 quality;

[0077] If not, determining whether the number of cracks is less than or equal to a second threshold;

[0078] If yes, the edge quality is determined to be level 3 quality;

[0079] If not, the edge quality is determined to be level 4 quality;

[0080] The first threshold and the second threshold are both non-zero integers, and the first threshold is smaller than the second threshold.

[0081] In an embodiment of the present application, when the edge quality of the raw steel coil is graded, if there are no cracks in the edge observation area, it is judged as grade 1 quality; if the number of cracks in the edge observation area is ≤a, it is judged as grade 2 quality; if a<the number of cracks in the edge observation area≤b, it is judged as grade 3 quality; if the number of edge cracks in the edge observation area>b, it is judged as grade 4 quality, where a and b are both integers.

[0082] S3: cold rolling the raw steel coil according to the edge quality grading.

[0083] Exemplarily, the cold rolling of the raw steel coil according to the edge quality grading comprises the following steps:

[0084] Determine whether the edge quality is equal to 1;

[0085] If yes, cold rolling the raw steel coil using level 1 rolling parameters;

[0086] If not, determine whether the edge quality is equal to 2;

[0087] If yes, cold rolling the raw steel coil using level 2 rolling parameters;

[0088] If not, determine whether the edge quality is equal to 3;

[0089] If yes, cold rolling the raw steel coil using level 3 rolling parameters;

[0090] If not, the raw steel coil is cold rolled using level 4 rolling parameters.

[0091] In the embodiment of the present application, when the raw steel coil is cold rolled, different rolling speeds, plate shapes and reduction rates are adopted for raw steel coils of different grades mainly based on the edge quality grading results.

[0092] Exemplarily, the cold rolling of the raw steel coil using the level 1 rolling parameters comprises the following steps:

[0093] Control the maximum rolling speed of cold tandem rolling to full speed;

[0094] Control the plate shape of each rack to be slightly medium wave;

[0095] Control the straightness of the outermost channel to -20-(-5)I-Unit;

[0096] Control the total reduction rate to be less than or equal to 96%.

[0097] In an embodiment of the present application, the raw steel coil of grade 1 quality is cold rolled using grade 1 rolling parameters. At this time, in the grade 1 rolling parameters, the maximum rolling speed of the cold rolling is full speed, the plate shape of each frame is slightly wavy, the straightness of the edge channel is -20-(-5)I-Unit, and the total reduction rate is less than or equal to 96%.

[0098] Exemplarily, the cold rolling of the raw steel coil using the 2-level rolling parameters comprises the following steps:

[0099] Control the maximum rolling speed of cold rolling to 75%-90% of the full speed;

[0100] Control the plate shape of each rack to be micro-edge wave;

[0101] Control the straightness of the outermost channel to 0-10I-Unit;

[0102] Control the total reduction rate to be less than or equal to 93%.

[0103] In an embodiment of the present application, a grade 1 quality raw steel coil is cold rolled using a grade 2 rolling parameter. In the grade 2 rolling parameter, the maximum rolling speed of the cold rolling is 75%-90% of the full speed, the plate shape of each frame is a slight edge wave, the straightness of the edge channel is 0-10I-Unit, and the total reduction rate is less than or equal to 93%.

[0104] Exemplarily, the cold rolling of the raw steel coil using the three-level rolling parameters comprises the following steps:

[0105] Control the maximum rolling speed of cold rolling to 50%-70% of the full speed;

[0106] Control the plate shape of each rack to be micro-edge wave;

[0107] Control the straightness of the most side channel to 10-20I-Unit;

[0108] Control the total reduction rate to be less than or equal to 90%.

[0109] In an embodiment of the present application, a raw steel coil of grade 1 quality is cold rolled using three-level rolling parameters. Among the three-level rolling parameters, the maximum rolling speed of the cold rolling is 50%-70% of the full speed, the plate shape of each frame is a slight edge wave, the straightness of the edge channel is 10-20I-Unit, and the total reduction rate is less than or equal to 90%.

[0110] Exemplarily, the cold rolling of the raw steel coil using 4-level rolling parameters comprises the following steps:

[0111] Control the cold rolling speed to full speed;

[0112] Control the plate shape of each rack to be slightly medium wave;

[0113] Control the straightness of the outermost channel to -20-(-5)I-Unit;

[0114] Control the total reduction rate to be less than or equal to 96%.

[0115] In an embodiment of the present application, a raw steel coil of grade 1 quality is cold rolled using 4-level rolling parameters. Among the 4-level rolling parameters, the cold rolling speed is full speed, the plate shape of each frame is slightly wavy, the straightness of the edge channel is -20-(-5)I-Unit, and the total reduction rate is less than or equal to 96%.

[0116] The present application provides a method for cold rolling a raw steel coil, comprising the following steps:

[0117] (1) Obtaining the edge quality morphology of the raw steel coil;

[0118] (2) The raw steel coil is graded for edge quality according to the edge quality morphology, wherein the edge without cracks is graded as Grade 1; the edge with the number of cracks within 10 mm ≤ 2 is graded as Grade 2; the edge with the number of cracks 2 < ≤ 5 is graded as Grade 3; the edge with the number of cracks > 5 is graded as Grade 4.

[0119] (3) Cold rolling the raw steel coil according to the edge quality grading.

[0120] 1) Rolling speed

[0121] For steel coils with edge quality level 1, the maximum rolling speed of cold rolling is controlled at 1200mpm; for steel coils with edge quality level 2, the maximum rolling speed of cold rolling is controlled at 80% of the full speed, that is, the rolling speed is 960mpm; for steel coils with edge quality level 3, the maximum rolling speed of cold rolling is controlled at 60% of the full speed, that is, the rolling speed is 960mpm; for steel coils with edge quality level 4, the full speed of 1200mpm is used for trimming.

[0122] 2) Plate shape

[0123] For steel coils with edge quality level 1, the plate shape of each rack is controlled to be slightly wavy, and the straightness of the edge channel is -15I-Unit to prevent edge tension and breakage.

[0124] For steel coils with edge quality level 2, the plate shape of each rack is controlled to be slightly edge-wavy, and the straightness of the edge channel is 2I-Unit to prevent edge tension and belt breakage.

[0125] For steel coils with edge quality level 3, the plate shape of each rack is controlled to be slightly edge-wavy, and the straightness of the edge channel is 10I-Unit to prevent edge tension and belt breakage.

[0126] For steel coils with edge quality level 4, the plate shape control requirements are the same as those for steel coils with edge quality level 1.

[0127] 3) Reduction rate

[0128] For steel coils with edge quality level 1, the total reduction rate = 96%; for steel coils with edge quality level 2, the total reduction rate = 93%; for steel coils with edge quality level 3, the total reduction rate = 90%; for steel coils with edge quality level 4, the total reduction rate = 96% after the trimming rolling process is adopted.

[0129] like Figure 2 The present application provides a raw steel coil cold rolling device, comprising:

[0130] The quality morphology acquisition module 10 is used to acquire the edge quality morphology of the raw steel coil;

[0131] An edge quality grading module 20 is used to grade the edge quality of the raw steel coil according to the edge quality morphology;

[0132] The steel coil cold rolling module 30 is used to perform cold rolling on the raw steel coil according to the edge quality grading.

[0133] The present application provides a raw steel coil cold rolling device that can execute a raw steel coil cold rolling method provided by the above steps.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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.

[0139] 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 any of the raw steel coil cold rolling methods described above.

[0140] 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 above-mentioned raw steel coil cold rolling methods are implemented.

[0141] The present application provides a method, device and storage medium for cold rolling of raw steel coils, which solves the problem of strip breakage caused by poor edge quality when a cold rolling mill rolls materials with room temperature brittleness, thereby achieving the purpose of improving the rolling stability of the cold rolling mill.

[0142] 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.

[0143] 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 a raw steel coil, characterized in that: The method comprises the steps of: Obtain the edge quality morphology of the raw steel coil; grading the edge quality of the raw steel coil according to the edge quality morphology; The raw steel coil is cold rolled according to the edge quality grading.

2. The method for cold rolling a raw steel coil according to claim 1, characterized in that: The step of obtaining the edge quality morphology of the raw steel coil comprises the following steps: Determining an edge observation area of ​​the raw steel coil; The number of cracks in the edge observation area is calculated.

3. The method for cold rolling a raw steel coil according to claim 1, characterized in that: The step of grading the edge quality of the raw steel coil according to the edge quality morphology comprises the following steps: Obtaining the number of cracks in the edge quality morphology; Determining whether the number of cracks is equal to 0; If so, the edge quality is determined to be level 1 quality; If not, determining whether the number of cracks is less than or equal to a first threshold; If yes, the edge quality is determined to be level 2 quality; If not, determining whether the number of cracks is less than or equal to a second threshold; If yes, the edge quality is determined to be level 3 quality; If not, the edge quality is determined to be level 4 quality; The first threshold and the second threshold are both non-zero integers, and the first threshold is smaller than the second threshold.

4. The method for cold rolling a raw steel coil according to claim 1, characterized in that: The cold rolling of the raw steel coil according to the edge quality grading comprises the following steps: Determine whether the edge quality is equal to 1; If yes, cold rolling the raw steel coil using level 1 rolling parameters; If not, determine whether the edge quality is equal to 2; If yes, cold rolling the raw steel coil using level 2 rolling parameters; If not, determine whether the edge quality is equal to 3; If yes, cold rolling the raw steel coil using level 3 rolling parameters; If not, the raw steel coil is cold rolled using level 4 rolling parameters.

5. The method for cold rolling a raw steel coil according to claim 4, characterized in that: The cold rolling of the raw steel coil using the level 1 rolling parameters comprises the following steps: Control the maximum rolling speed of cold tandem rolling to full speed; Control the plate shape of each rack to be slightly medium wave; Control the straightness of the outermost channel to -20-(-5)I-Unit; Control the total reduction rate to be less than or equal to 96%.

6. The method for cold rolling a raw steel coil according to claim 4, characterized in that: The cold rolling of the raw steel coil using the second-level rolling parameters comprises the following steps: Control the maximum rolling speed of cold rolling to 75%-90% of the full speed; Control the plate shape of each rack to be micro-edge wave; Control the straightness of the outermost channel to 0-10I-Unit; Control the total reduction rate to be less than or equal to 93%.

7. The method for cold rolling a raw steel coil according to claim 4, characterized in that: The cold rolling of the raw steel coil using the three-level rolling parameters comprises the following steps: Control the maximum rolling speed of cold rolling to 50%-70% of the full speed; Control the plate shape of each rack to be micro-edge wave; Control the straightness of the most side channel to 10-20I-Unit; Control the total reduction rate to be less than or equal to 90%.

8. The method for cold rolling a raw steel coil according to claim 4, characterized in that: The cold rolling of the raw steel coil using the 4-level rolling parameters comprises the following steps: Control the cold rolling speed to full speed; Control the plate shape of each rack to be slightly medium wave; Control the straightness of the outermost channel to -20-(-5)I-Unit; Control the total reduction rate to be less than or equal to 96%.

9. A raw steel coil cold rolling device, characterized in that: include: The quality morphology acquisition module is used to obtain the edge quality morphology of the raw steel coil; An edge quality grading module, used for grading the edge quality of the raw steel coil according to the edge quality morphology; The steel coil cold rolling module is used to cold roll the raw steel coil according to the edge quality grading.

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 8 are implemented.

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