Rolling mill roller gap leveling method, device and equipment
By obtaining the roll joint leveling signal of the rolling mill roll and determining the leveling amount based on the signal duration, the problem of strip wave shape defects is solved, the strip stress and wave shape are achieved, and the quality of rolled products is improved.
Patent Information
- Application Number
- CN202411772582.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-04
- Publication Date
- 2025-03-04
AI Technical Summary
Strip steel is prone to wave defects during rolling mill, resulting in poor product quality and increasing corporate costs.
By obtaining the roll slot leveling signal of the roll roll at the initial stage of the rolling mill, the roll slot leveling amount is determined based on the duration of the signal, and the roll slot of the roll is leveled according to the leveling amount and the signal.
Ensure uniform stress on the strip, reduce the difference in deformation at different positions, reduce the possibility of wave defects, and improve the quality and efficiency of rolled products.
Smart Images
Figure CN119549529A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of hot rolling, and in particular relates to a method, a device and equipment for leveling the roll gap of a rolling mill. Background Art
[0002] When the strip is rolled by the rolling mill, the strip is prone to wave defects, which leads to poor quality of the rolled product and even makes it unusable, increasing the cost of the enterprise. Therefore, the wave defects of the strip are a technical problem that needs to be solved urgently. Summary of the invention
[0003] The embodiments of the present invention provide a method, device and equipment for leveling the roll gap of a rolling mill, which solve the technical problem that wavy defects are easily generated in strip steel.
[0004] In a first aspect, an embodiment of the present invention provides a method for leveling the roll gap of a rolling mill, comprising: in an initial stage of the rolling mill rolling strip steel, obtaining a roll gap leveling signal set for the rolls of the rolling mill; determining a roll gap leveling amount based on the duration of the roll gap leveling signal; and leveling the roll gap of the rolling mill based on the roll gap leveling amount and the roll gap leveling signal.
[0005] In combination with the first aspect of the present invention, in some embodiments, the roller gap leveling amount is determined based on the duration of the roller gap leveling signal, including: if the duration is greater than a preset duration threshold, and the roller gap leveling signal is a first leveling sub-signal, the roller gap leveling amount is generated based on the first leveling amount; after the roller gap leveling amount is generated based on the first leveling amount, if the duration increases to be within a preset duration range, and the roller gap leveling signal changes to a second leveling sub-signal, the roller gap leveling amount is generated again based on the second leveling amount, and the lower limit value of the preset duration range is greater than the preset duration threshold.
[0006] In combination with the first aspect of the present invention, in some embodiments, the roller gap leveling amount is determined based on the duration of the roller gap leveling signal, including: if the duration is greater than a preset duration threshold, generating the roller gap leveling amount; after generating the roller gap leveling amount, resetting the duration to zero and then timing again, returning to execute if the duration is greater than the preset duration threshold, generating the roller gap leveling amount.
[0007] In combination with the first aspect of the present invention, in some embodiments, if the duration is greater than a preset duration threshold, the roller gap leveling amount is generated, including: if the duration is greater than the preset duration threshold, and the roller gap leveling signal is a first leveling sub-signal, the first leveling amount is used as the roller gap leveling amount; if the duration is greater than the preset duration threshold, and the roller gap leveling signal is a second leveling sub-signal, the second leveling amount is used as the roller gap leveling amount.
[0008] In combination with the first aspect of the present invention, in some embodiments, leveling the roll gap of the rolling mill based on the roll gap leveling amount and the roll gap leveling signal includes: leveling the roll gap of the rolling mill at a preset leveling speed based on the roll gap leveling amount and the roll gap leveling signal.
[0009] In combination with the first aspect of the present invention, in some embodiments, the roll gap of the rolling mill is leveled according to a preset leveling speed based on the roll gap leveling amount and the roll gap leveling signal, including: if the roll gap leveling signal is a first leveling sub-signal, the roll gap of the rolling mill is leveled according to the preset leveling speed based on the roll gap leveling amount and the first leveling direction; if the roll gap leveling signal is a second leveling sub-signal, the roll gap of the rolling mill is leveled according to the preset leveling speed based on the roll gap leveling amount and the second leveling direction.
[0010] In combination with the first aspect of the present invention, in some embodiments, the rolling mill is provided with a first button and a second button, and obtaining the roll gap leveling signal set for the rolls of the rolling mill includes: obtaining the current states of the first button and the second button; if the current state of the first button is a rotation state, using the first leveling sub-signal as the roll gap leveling signal; if the current state of the second button is a rotation state, using the second leveling sub-signal as the roll gap leveling signal.
[0011] In combination with the first aspect of the present invention, in some embodiments, the obtaining of a roll gap leveling signal set for the rolls of the rolling mill includes: obtaining an image of the steel strip on the rolling mill; and obtaining the roll gap leveling signal based on the image of the steel strip.
[0012] In the second aspect, an embodiment of the present invention provides a roll gap leveling device for a rolling mill, comprising: a signal acquisition unit, used to acquire a roll gap leveling signal set for the rolls of the rolling mill in the initial stage of rolling the strip steel by the rolling mill; a leveling amount determination unit, used to determine the roll gap leveling amount based on the duration of the roll gap leveling signal; and a leveling unit, used to level the roll gap of the rolling mill based on the roll gap leveling amount and the roll gap leveling signal.
[0013] In a third aspect, an embodiment of the present invention provides 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 any one of the methods described in the first aspect when executing the computer program.
[0014] One or more technical solutions provided by the embodiments of the present invention achieve at least the following technical effects or advantages:
[0015] The embodiment of the present invention obtains a roll gap leveling signal set for the rolls of the rolling mill at the initial stage of rolling the strip; determines the roll gap leveling amount based on the duration of the roll gap leveling signal; and level the roll gap of the rolls based on the roll gap leveling amount and the roll gap leveling signal. After the roll gap of the rolls is leveled, it can ensure that the strip is subjected to uniform force, thereby reducing the difference in deformation at different positions of the strip. Therefore, the possibility of wave-shaped defects in the strip is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] 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.
[0017] Figure 1 It is a flow chart of a roll gap leveling method of a rolling mill in an embodiment of the present invention;
[0018] Figure 2 A schematic diagram of a roll and a steel strip in an embodiment of the present invention;
[0019] Figure 3 It is a functional module diagram of a roll gap leveling device of a rolling mill in an embodiment of the present invention;
[0020] Figure 4 Schematic diagram of the structure of an electronic device in an embodiment of the present invention. DETAILED DESCRIPTION
[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.
[0022] In the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.
[0023] The embodiment of the present invention provides a method for leveling the roll gap of a rolling mill, referring to Figure 1 As shown, the method includes the following steps S101 to S103:
[0024] S101: In the initial stage of the rolling mill rolling the steel strip, a roll gap leveling signal set for the rolls of the rolling mill is obtained.
[0025] It should be noted that the initial stage may refer to the stage in which the rolling mill rolls the preset position of the strip, and the preset position of the strip may refer to the position within 100m from the head of the strip to the back of the head of the strip. The strip may be a wide and thin strip, and the wide and thin specification refers to a width of more than 1200mm and a thickness of less than 2.5mm. The embodiment of the present invention is particularly suitable for wide and thin strips, and the specific reason is that the width of the wide and thin strip is relatively large, and it is easy for the center line of the strip to deviate from the rolling center line, that is, the strip runs off, resulting in the force on both sides of the roller being applied to strips of different areas, thereby causing the roller gap of the roller to be uneven. In addition, since the thickness of the wide and thin strip is relatively small, uneven force is more likely to cause wave defects.
[0026] In some embodiments, a first button and a second button are provided on the rolling mill, and obtaining a roll gap leveling signal set for the rolls of the rolling mill may include: obtaining the current states of the first button and the second button; if the current state of the first button is a rotating state, using the first leveling sub-signal as the roll gap leveling signal; if the current state of the second button is a rotating state, using the second leveling sub-signal as the roll gap leveling signal.
[0027] In other embodiments, obtaining a roll gap leveling signal set for a rolling mill roll may include: obtaining an image of a steel strip on the rolling mill; and obtaining a roll gap leveling signal based on the image of the steel strip.
[0028] In some embodiments, obtaining a roll gap leveling signal based on an image of the steel strip may include: analyzing the image of the steel strip to obtain defect information of the steel strip; and if the defect information includes a wavy defect, generating a roll gap leveling signal based on the defect information.
[0029] It should be noted that the roll gap leveling signal is determined by the image of the strip, which avoids manual adjustment, realizes the automation of roll gap leveling, can adjust the roll gap in time, and shortens the roll gap leveling time of the rolling mill.
[0030] S102: Determine the roller gap leveling amount based on the duration of the roller gap leveling signal.
[0031] In some embodiments, a first implementation of step S102, step S102, may include: if the duration is greater than a preset duration threshold, and the roller gap leveling signal is a first leveling sub-signal, generating a roller gap leveling amount based on the first leveling amount; after generating the roller gap leveling amount based on the first leveling amount, if the duration increases to be within a preset duration range, and the roller gap leveling signal changes to a second leveling sub-signal, generating the roller gap leveling amount again based on the second leveling amount, and the lower limit value of the preset duration range is greater than the preset duration threshold.
[0032] It should be noted that the roller gap leveling amount is generated based on the first leveling amount, which may be: the first leveling amount is used as the roller gap leveling amount. The roller gap leveling amount is generated again based on the second leveling amount, which may be: the second leveling amount is used as the roller gap leveling amount. The preset time threshold may be 0.5s, and the preset time range may be 0.6s to 1s. The first leveling amount may be any value from 0.3 to 0.8mm, and the second leveling amount may be any value from 0.25 to 0.5mm. Reference Figure 2 As shown, Figure 2 It is a schematic diagram of the rolling mill roller and the strip in an embodiment of the present invention. The first leveling sub-signal is used to indicate that the roll gap is leveled according to the first leveling direction, and the second leveling sub-signal is used to indicate that the roll gap is leveled according to the second leveling direction. The first leveling direction is opposite to the second leveling direction. The first leveling direction may refer to that the roll gap on the first side of the rolling mill roller increases and the roll gap on the second side decreases, and the second leveling direction may refer to that the roll gap on the first side of the rolling mill roller decreases and the roll gap on the second side increases.
[0033] In other embodiments, the second implementation of step S102, step S102, may include: if the duration is greater than a preset duration threshold, generating a roller gap leveling amount; after generating the roller gap leveling amount, resetting the duration to zero and then timing again, returning to execute if the duration is greater than the preset duration threshold, generating a roller gap leveling amount.
[0034] In some embodiments, if the duration is greater than a preset duration threshold, generating a roller gap leveling amount may include: if the duration is greater than the preset duration threshold, and the roller gap leveling signal is a first leveling sub-signal, using the first leveling amount as the roller gap leveling amount; if the duration is greater than the preset duration threshold, and the roller gap leveling signal is a second leveling sub-signal, using the second leveling amount as the roller gap leveling amount.
[0035] It should be noted that the preset time threshold can be 0.5s. The roll gap leveling signal can be a rotation signal of a button, and the rotation signal includes a rotation angle and a rotation duration. When performing roll gap leveling, the generation of the roll gap leveling amount can be controlled according to the rotation angle. Then, the larger the rotation angle, the larger the roll gap leveling amount. However, there are some problems, such as hand shaking of the staff at the post, and the rotation angle suddenly increases to a large value. At this time, the roll gap leveling amount will also increase to a large value, which is likely to cause over-adjustment, and then lead to roll gap leveling failure, resulting in an increase in defective products in rolled products. Therefore, the embodiment of the present invention controls the generation of the roll gap leveling amount based on the rotation duration rather than the rotation angle, that is, the roll gap leveling amount is determined based on the duration of the roll gap leveling signal, and each time the duration reaches a preset duration threshold, a roll gap leveling amount is generated to control the roll gap leveling, that is, the roll gap leveling amount is generated in batches at different time periods within the duration of the roll gap leveling signal, thereby avoiding abnormal changes in the roll gap leveling amount due to hand shaking of personnel on duty, achieving uniform speed leveling of the roll gap, avoiding over-adjustment, and improving the success rate of roll gap leveling, thereby improving the roll gap leveling efficiency of the rolling mill.
[0036] S103: Leveling the roll gap of the rollers based on the roll gap leveling amount and the roll gap leveling signal.
[0037] In some embodiments, step S103 may include: based on the roll gap leveling amount and the roll gap leveling signal, leveling the roll gap of the rollers at a preset leveling speed.
[0038] It should be noted that when leveling the roll gap of the rolling mill, due to the high speed of the steel strip moving on the production line, the personnel on duty may lag behind in leveling the roll gap by pressing a button, thereby reducing the quality of the rolled product. Therefore, the embodiment of the present invention can limit the preset leveling speed to 2.5 mm / s, so as to perform leveling at a faster speed, thereby improving the efficiency of the roll gap leveling of the rolling mill.
[0039] In some embodiments, based on the roll gap leveling amount and the roll gap leveling signal, the roll gap of the roller is leveled at a preset leveling speed, which may include: if the roll gap leveling signal is a first leveling sub-signal, based on the roll gap leveling amount and the first leveling direction, the roll gap of the roller is leveled at a preset leveling speed; if the roll gap leveling signal is a second leveling sub-signal, based on the roll gap leveling amount and the second leveling direction, the roll gap of the roller is leveled at a preset leveling speed.
[0040] In order to enhance the understanding of the embodiments of the present invention, the following examples are given:
[0041] Implementation method 1 is described based on the first implementation method of step S102, and assuming that the preset time threshold is 0.5s, the preset time range is 0.6s to 1s, the first leveling amount is 0.3mm, and the second leveling amount is 0.25mm, then:
[0042] Step 1, obtaining a roller gap leveling signal;
[0043] Step 2: If it is detected that the duration of the roller gap leveling signal is 0.55 seconds and the roller gap leveling signal is the first leveling sub-signal, a roller gap leveling amount of 0.3 mm is generated;
[0044] Step 3, based on the first leveling direction and the roll gap leveling amount of 0.3 mm, the roll gap of the roller is leveled at a preset leveling speed;
[0045] Step 4: It is detected that the duration of the roller gap leveling signal is 0.7S, and the roller gap leveling signal is changed to the second leveling sub-signal, and a roller gap leveling amount of 0.25mm is generated;
[0046] Step 5: Based on the second leveling direction and the roll gap leveling amount of 0.25 mm, the roll gap of the roller is leveled at a preset leveling speed.
[0047] Implementation method 2 is described based on the second implementation method of step S102, and assuming that the preset time threshold is 0.5s, the first leveling amount is 0.3mm, and the second leveling amount is 0.25mm, then:
[0048] Step 1, obtaining a roller gap leveling signal;
[0049] Step 2: If it is detected that the duration of the roller gap leveling signal is 0.55 seconds and the roller gap leveling signal is the first leveling sub-signal, a roller gap leveling amount of 0.3 mm is generated and the duration is reset to zero;
[0050] Step 3, based on the first leveling direction and the roll gap leveling amount of 0.3 mm, the roll gap of the roller is leveled at a preset leveling speed;
[0051] Step 4: If it is detected that the duration of the roller gap leveling signal is 0.52S and the roller gap leveling signal is the first leveling sub-signal, a roller gap leveling amount of 0.3mm is generated and the duration is reset to zero;
[0052] Step 5, based on the first leveling direction and the roll gap leveling amount of 0.3 mm, the roll gap of the roller is leveled at a preset leveling speed;
[0053] Step 6: If it is detected that the duration of the roller gap leveling signal is 0.54S and the roller gap leveling signal is the second leveling sub-signal, a roller gap leveling amount of 0.25mm is generated and the duration is reset to zero;
[0054] Step 7: Based on the second leveling direction and the roll gap leveling amount of 0.25 mm, the roll gap of the roller is leveled at a preset leveling speed.
[0055] It should be noted that with the increasingly fierce competition in the steel market, in order to reduce costs and improve efficiency, the expansion direction of various user products is increasingly tending towards wide and thin specifications, such as silicon steel, pickled plates, etc. In the process of the existing technical production scheme, the strip head deviates and repeatedly waves, resulting in asymmetric straightness, tower shape, folding, scrap steel and other problems. In severe cases, the defect blocking rate can reach more than 20%, resulting in a large number of reworks and scrapping, which brings a lot of economic losses to production. For the treatment of wave defects, the rolling mill stiffness can be adjusted to reduce deviation, the product process, temperature and process parameters can be modified, and the operator can correct the strip wave shape by correcting the rolling mill roll gap leveling value. However, there are also some problems. The rolling mill stiffness is affected by the use conditions and environment of the on-site rolling mill and is difficult to adjust accurately and at any time. The product process is affected by production scheduling, transitional varieties before and after, and various factors in the actual production process. The process conditions are constantly changing and difficult to fix. The operator controls the rolling mill roll gap leveling value to adapt to the process changes of each piece of strip steel and the repeated waves of the strip head. There are problems such as adjustment lag and mismatch of adjustment amount. When the rough rolling sickle bend is too large, it needs to be adjusted in the reverse direction, but the reverse adjustment speed is too low to eliminate the reverse wave shape. The embodiment of the present invention can solve the problems of repeated wave formation at the head of the strip, the operator's lagging adjustment of the roll gap leveling value, and the mismatch between the adjustment speed and the adjustment amount and the actual wave shape of the strip. The leveling is automatically output through the maximum adjustment speed of the first-level hydraulic cylinder, and the output can be followed according to the manual output direction.
[0056] It should be noted that the roll gap can be leveled by a hydraulic cylinder, and a primary control function can be developed to control the horizontal movement orientation and quantitative automatic roll gap leveling function on both sides of the roll. The output speed can be the maximum speed of the hydraulic cylinder (2.5mm / s), and a quantitative automatic roll gap leveling function selection button and a quantitative automatic roll gap leveling output can be written into the dialog box. The first leveling amount and the second leveling amount can be given in the operation screen according to actual conditions, and a quantitative automatic roll gap leveling function selection button can also be made in the screen. The wave shape mentioned in the embodiment of the present invention may refer to the unevenness of one side of the strip, that is, the unevenness of one side caused by the inconsistent extension of the strip on both sides along the width direction. In the roll gap leveling, the roll gap difference on both sides of the roll is used to improve the deviation and one-sided wave shape caused by the inconsistent extension of the strip on both sides.
[0057] refer to Figure 2As shown, the following is a further explanation of the reasons why the uneven roll gap causes the wavy defect: When the strip deviates, there will be a certain distance between the rolling center line and the strip center line, and this distance is the deviation amount. On both sides of the rolling center line, the rolling force of the rollers is the same, but it is applied to strips of different areas, which leads to uneven force on the strip and deformation differences, which leads to the wavy shape of the strip. It should also be noted that the strip area on the left side of the rolling center line is small, resulting in the deformation of the left strip being greater than the deformation of the right strip, which in turn causes the left roll gap to be smaller than the right roll gap. At this time, leveling is required to reduce the width difference between the left and right roll gaps.
[0058] The embodiment of the present invention obtains a roll gap leveling signal set for the rolls of the rolling mill at the initial stage of rolling the strip; determines the roll gap leveling amount based on the duration of the roll gap leveling signal; and level the roll gap of the rolls based on the roll gap leveling amount and the roll gap leveling signal. After the roll gap of the rolls is leveled, it can ensure that the strip is subjected to uniform force, thereby reducing the difference in deformation at different positions of the strip. Therefore, the possibility of wave-shaped defects in the strip is reduced.
[0059] Based on the same inventive concept, Figure 3 As shown, an embodiment of the present invention provides a roll gap leveling device 10 of a rolling mill, comprising: a signal acquisition unit 110, used to acquire a roll gap leveling signal set for the rolls of the rolling mill in the initial stage of the rolling mill rolling the strip; a leveling amount determination unit 120, used to determine the roll gap leveling amount based on the duration of the roll gap leveling signal; a leveling unit 130, used to level the roll gap of the rolling mill based on the roll gap leveling amount and the roll gap leveling signal.
[0060] It can be understood that the leveling amount determination unit 120 includes: a first determination sub-unit, which is used to generate a roller gap leveling amount based on the first leveling amount if the duration is greater than a preset duration threshold and the roller gap leveling signal is a first leveling sub-signal; after generating the roller gap leveling amount based on the first leveling amount, if the duration increases to be within a preset duration range and the roller gap leveling signal changes to a second leveling sub-signal, the roller gap leveling amount is generated again based on the second leveling amount, and the lower limit value of the preset duration range is greater than the preset duration threshold.
[0061] It can be understood that the leveling amount determination unit 120 includes: a second determination subunit, which is used to generate the roll gap leveling amount if the duration is greater than the preset duration threshold; after the roll gap leveling amount is generated, the duration is reset to zero and then the timing is repeated, and the roll gap leveling amount is generated if the duration is greater than the preset duration threshold. Among them, if the duration is greater than the preset duration threshold, the roll gap leveling amount is generated, including: if the duration is greater than the preset duration threshold, and the roll gap leveling signal is the first leveling sub-signal, the first leveling amount is used as the roll gap leveling amount; if the duration is greater than the preset duration threshold, and the roll gap leveling signal is the second leveling sub-signal, the second leveling amount is used as the roll gap leveling amount.
[0062] It can be understood that the leveling unit 130 is specifically used to: level the roll gap of the roller according to the preset leveling speed based on the roll gap leveling amount and the roll gap leveling signal. Wherein, based on the roll gap leveling amount and the roll gap leveling signal, leveling the roll gap of the roller according to the preset leveling speed includes: if the roll gap leveling signal is the first leveling sub-signal, based on the roll gap leveling amount and the first leveling direction, leveling the roll gap of the roller according to the preset leveling speed; if the roll gap leveling signal is the second leveling sub-signal, based on the roll gap leveling amount and the second leveling direction, leveling the roll gap of the roller according to the preset leveling speed.
[0063] It can be understood that the rolling mill is provided with a first button and a second button, then the signal acquisition unit 110 includes: a first acquisition sub-unit, used to acquire the current status of the first button and the second button; if the current state of the first button is a rotation state, the first leveling sub-signal is used as a roll gap leveling signal; if the current state of the second button is a rotation state, the second leveling sub-signal is used as a roll gap leveling signal.
[0064] It can be understood that the signal acquisition unit 110 includes: a second acquisition subunit, which is used to acquire an image of the steel strip on the rolling mill; and obtain a roll gap leveling signal based on the image of the steel strip.
[0065] It should be understood that more implementation details of the roll gap leveling device 10 of the rolling mill in the embodiment of the present invention are described in the aforementioned roll gap leveling method of the rolling mill, and will not be repeated here for the sake of brevity of the specification.
[0066] Based on the same inventive concept, an embodiment of the present invention further provides an electronic device, such as Figure 4 As shown, it includes a memory 404, a processor 402, and a computer program stored in the memory 404 and executable on the processor 402. The processor 402 executes the program to implement the steps described in any implementation of the method for leveling the roll gap of a rolling mill.
[0067] Among them, Figure 4In the embodiment of the present invention, a bus architecture (represented by bus 400) is shown, which may include any number of interconnected buses and bridges, and bus 400 links various circuits including one or more processors represented by processor 402 and memory represented by memory 404. Bus 400 may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. Bus interface 405 provides an interface between bus 400 and receiver 401 and transmitter 403. Receiver 401 and transmitter 403 may be the same element, namely a transceiver, providing a unit for communicating with various other devices over a transmission medium. Processor 402 is responsible for managing bus 400 and general processing, while memory 404 may be used to store data used by processor 402 when performing operations.
[0068] The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored as one or more instructions or codes on a computer-readable medium or transmitted via a computer-readable medium. Other examples and implementations are within the scope and spirit of the present invention and the appended claims. For example, due to the nature of software, the functions described above may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these. In addition, each functional unit may be integrated into a processing unit, each unit may exist physically separately, or two or more units may be integrated into one unit.
[0069] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.
[0070] The units described as separate components may or may not be physically separated, and the components of the control device may or may not be physical units, that is, they may be located in one place or distributed in multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.
[0071] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, magnetic disk or optical disk and other media that can store program codes.
[0072] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.
Claims
1. A method for leveling the roll gap of a rolling mill, characterized in that: include: In the initial stage of the rolling mill rolling the strip steel, a roll gap leveling signal set for the rolls of the rolling mill is obtained; Determining a roller gap leveling amount based on a duration of the roller gap leveling signal; The roll gap of the rolling roller is leveled based on the roll gap leveling amount and the roll gap leveling signal.
2. The method for leveling the roll gap of a rolling mill according to claim 1, characterized in that: The step of determining the roller gap leveling amount based on the duration of the roller gap leveling signal comprises: If the duration is greater than a preset duration threshold, and the roller gap leveling signal is a first leveling sub-signal, generating the roller gap leveling amount based on the first leveling amount; After the roller gap leveling amount is generated based on the first leveling amount, if the duration increases to be within the preset duration range, and the roller gap leveling signal is changed to the second leveling sub-signal, the roller gap leveling amount is generated again based on the second leveling amount, and the lower limit value of the preset duration range is greater than the preset duration threshold.
3. The method for leveling the roll gap of a rolling mill according to claim 1, characterized in that: The step of determining the roller gap leveling amount based on the duration of the roller gap leveling signal comprises: If the duration is greater than a preset duration threshold, generating the roller gap leveling amount; After generating the roller gap leveling amount, the duration is reset to zero and then the timing is restarted, and the process returns to executing the process of generating the roller gap leveling amount if the duration is greater than a preset duration threshold.
4. The method for leveling the roll gap of a rolling mill according to claim 3, characterized in that: If the duration is greater than a preset duration threshold, generating the roller gap leveling amount includes: If the duration is greater than the preset duration threshold, and the roller gap leveling signal is the first leveling sub-signal, the first leveling amount is used as the roller gap leveling amount; If the duration is greater than the preset duration threshold, and the roller gap leveling signal is a second leveling sub-signal, the second leveling amount is used as the roller gap leveling amount.
5. The method for leveling the roll gap of a rolling mill according to claim 1, characterized in that: The step of leveling the roll gap of the roller based on the roll gap leveling amount and the roll gap leveling signal comprises: Based on the roll gap leveling amount and the roll gap leveling signal, the roll gap of the roller is leveled at a preset leveling speed.
6. The method for leveling the roll gap of a rolling mill according to claim 5, characterized in that: The step of leveling the roll gap of the roller according to a preset leveling speed based on the roll gap leveling amount and the roll gap leveling signal comprises: If the roll gap leveling signal is a first leveling sub-signal, based on the roll gap leveling amount and the first leveling direction, the roll gap of the roller is leveled at the preset leveling speed; If the roll gap leveling signal is a second leveling sub-signal, the roll gap of the roller is leveled at the preset leveling speed based on the roll gap leveling amount and the second leveling direction.
7. The method for leveling the roll gap of a rolling mill according to claim 6, characterized in that: The rolling mill is provided with a first button and a second button, and the step of obtaining a roll gap leveling signal set for the rolls of the rolling mill includes: Get the current status of the first button and the second button; If the current state of the first button is a rotating state, using the first leveling sub-signal as the roller gap leveling signal; If the current state of the second button is the rotation state, the second leveling sub-signal is used as the roller gap leveling signal.
8. The method for leveling the roll gap of a rolling mill according to claim 1, characterized in that: The step of obtaining a roll gap leveling signal set for a roll of the rolling mill comprises: Acquire an image of the steel strip on the rolling mill; Based on the image of the steel strip, the roll gap leveling signal is obtained.
9. A roll gap leveling device for a rolling mill, characterized in that: include: A signal acquisition unit, used for acquiring a roll gap leveling signal set for a roll of the rolling mill in an initial stage of the rolling mill rolling the strip steel; a leveling amount determining unit, configured to determine a roller gap leveling amount based on a duration of the roller gap leveling signal; A leveling unit is used to level the roll gap of the roller based on the roll gap leveling amount and the roll gap leveling signal.
10. 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 method according to any one of claims 1 to 8 when executing the computer program.