Roll gap adjusting method and device for small finish rolling vertical rolls

Abstract

The invention provides a roll gap adjusting method and device for a finish rolling small vertical roll, and relates to the technical field of hot rolling. The method comprises the steps that before a finish rolling small vertical roll is loaded, it is determined that the head width of a strip steel intermediate billet exceeds the head loading pressure of the finish rolling small vertical roll in the previous rolling process; determining a preset pressure range corresponding to the head width exceeding; judging whether the head on-load pressure is within the preset pressure range or not to obtain a judgment result; and on the basis of the judgment result, whether the roll gap of the finish rolling small vertical roll is adjusted or not is determined. According to the roll gap adjusting method and device for the finish rolling small vertical roll, it can be guaranteed that the strip steel is continuously and accurately centered.

Description

Technical Field

[0001] The present application relates to the field of hot rolling technology, and in particular to a method and device for adjusting the roll gap of a finishing rolling small vertical roll. Background Art

[0002] The finishing small vertical roller is installed on the entrance side of the F1 rolling mill, mainly to further improve the plate width accuracy and to center the intermediate billet on the rolling center line, playing the role of centering and correcting in the strip rolling process. After the calibration of the finishing small vertical roller is completed, the roll gap of the finishing small vertical roller will no longer change before rolling. The control modes of the finishing small vertical roller are divided into position control mode, pressure control mode, etc. In actual production, the pressure control mode is mainly used. In the pressure control mode, before the finishing small vertical roller is not loaded, it will be opened to the set roll gap. When the finishing small vertical roller is loaded, the roll gap will be controlled according to the detected load pressure of the head of the finishing small vertical roller, that is, the head pressure of the strip, to reach the set pressure.

[0003] The accuracy of the gap between the finishing small vertical rollers plays a vital role in the deviation of the strip head. There is a fixed corresponding relationship between the gap between the finishing small vertical rollers and the head load pressure of the finishing small vertical rollers, that is, the head pressure of the strip. Under the traditional pressure control mode, due to the influence of factors such as the calibration accuracy of the finishing small vertical rollers, the width of the strip intermediate billet, and the wear of the finishing small vertical rollers, the gap accuracy of the finishing small vertical rollers and the head pressure of the strip fluctuate greatly. If the head pressure of the strip is too high, it is easy to cause deformation, arching and tilting of the head of the strip; if the head pressure of the strip is too low, it cannot effectively play a centering role. Even when the head pressure of the strip is too low, the gap between the rollers will continue to close, causing the strip to deviate. Summary of the invention

[0004] The present application provides a method and device for adjusting the roll gap of a finishing small vertical roll, which is used to solve the defect in the prior art that it is difficult to continuously and accurately center the strip steel.

[0005] In a first aspect, the present application provides a method for adjusting the roll gap of a finishing small vertical roll, comprising:

[0006] Before the finishing rolling small vertical roller is loaded, the head width of the strip intermediate billet in the previous rolling process and the head loading pressure of the finishing rolling small vertical roller are determined;

[0007] Determine a preset pressure range corresponding to the head width;

[0008] Determine whether the head load pressure is within the preset pressure range, and obtain a determination result;

[0009] Based on the judgment result, it is determined whether to adjust the roll gap of the finishing small vertical roll.

[0010] Optionally, the preset pressure range includes a first preset pressure range and a second preset pressure range;

[0011] The determining of the preset pressure range corresponding to the head width includes:

[0012] When the head width is less than or equal to the preset width, determining the preset pressure range as the first preset pressure range;

[0013] When the head width is greater than the preset width, the preset pressure range is determined to be the second preset pressure range.

[0014] Optionally, the lower limit value and the upper limit value of the first preset pressure range are respectively the first preset value and the second preset value; the lower limit value and the upper limit value of the second preset pressure range are respectively the third preset value and the fourth preset value; the judgment result includes the first judgment result and the second judgment result;

[0015] The determining whether the head load pressure is within the preset pressure range and obtaining the determination result includes:

[0016] When the preset pressure range is the first preset pressure range, determining the magnitude relationship between the head load pressure and the first preset value and the second preset value to obtain the first determination result;

[0017] When the preset pressure range is the second preset pressure range, the magnitude relationship between the head load pressure and the third preset value and the fourth preset value is determined to obtain the second determination result.

[0018] Optionally, determining whether to adjust the roll gap of the finishing roll based on the judgment result includes:

[0019] When the first judgment result is that the head load pressure is within the first preset pressure range, the roll gap of the finishing vertical roll is not adjusted;

[0020] When the first judgment result is that the head load pressure is not within the first preset pressure range, adjusting the roll gap of the finishing roll;

[0021] When the second judgment result is that the head load pressure is within the second preset pressure range, the roll gap of the finishing small vertical roll is not adjusted;

[0022] When the second judgment result is that the head load pressure is not within the second preset pressure range, the roll gap of the finishing vertical roll is adjusted.

[0023] Optionally, when the first judgment result is that the head load pressure is not within the first preset pressure range, adjusting the roll gap of the finishing small vertical roll includes:

[0024] When the head load pressure is less than the first preset value, determining a first deviation value between the head load pressure and the first preset value;

[0025] determining a first roll gap learning value based on the first deviation value;

[0026] Based on the first roll gap learning value, reducing the roll gap of the finishing small vertical roll;

[0027] or:

[0028] When the head load pressure is greater than the second preset value, determining a second deviation value between the head load pressure and the second preset value;

[0029] determining a second roll gap learning value based on the second deviation value;

[0030] Based on the second roll gap learned value, the roll gap of the finishing vertical roll is increased.

[0031] Optionally, when the second judgment result is that the head load pressure is not within the second preset pressure range, adjusting the roll gap of the finishing small vertical roll includes:

[0032] When the head load pressure is less than the third preset value, determining a third deviation value between the head load pressure and the third preset value;

[0033] determining a third roll gap learning value based on the third deviation value;

[0034] Based on the third roll gap learning value, reducing the roll gap of the finishing small vertical roll;

[0035] or:

[0036] In a case where the head load pressure is greater than the fourth preset value, determining a fourth deviation value between the head load pressure and the fourth preset value;

[0037] determining a fourth roll gap learning value based on the fourth deviation value;

[0038] Based on the fourth roll gap learning value, the roll gap of the finishing vertical roll is increased.

[0039] Optionally, determining a first roll gap learning value based on the first deviation value includes:

[0040] The first roller gap learning value is obtained by dividing the first deviation value by a preset adjustment value.

[0041] Optionally, the method for adjusting the roll gap of the finishing small vertical roll further includes:

[0042] When the cumulative adjustment amount of the roll gap of the finishing small vertical roller is greater than the preset adjustment threshold, the roll gap of the finishing small vertical roller is recalibrated.

[0043] In a second aspect, the present application also provides a roller gap adjustment device for a finishing small vertical roller, comprising:

[0044] The first determination module is used to determine the head width of the strip intermediate billet and the head load pressure of the finishing small vertical roller before the finishing small vertical roller is loaded;

[0045] A second determination module is used to determine a preset pressure range corresponding to the head width;

[0046] A judgment module, used to judge whether the head load pressure is within the preset pressure range and obtain a judgment result;

[0047] The adjustment module is used to determine whether to adjust the roll gap of the finishing small vertical roll based on the judgment result.

[0048] In a third aspect, the present application further 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 the method described in the first aspect when executing the computer program.

[0049] In a fourth aspect, the present application further provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the method described in the first aspect.

[0050] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which implements the method described in the first aspect when executed by a processor.

[0051] The roll gap adjustment method and device of the finishing small vertical roller provided in the present application detect the head load pressure of the finishing small vertical roller during the previous rolling. When the head load pressure of the finishing small vertical roller does not match the preset pressure range corresponding to the head width of the strip intermediate billet, the roll gap of the finishing small vertical roller is adjusted by self-learning before the current rolling, and then the current rolling process is continued, so that the rolling pressure of the finishing small vertical roller is continuously present, and the head of the strip is continuously kept in a centered state, thereby improving the strip threading stability, breaking the conventional control mode of starting each rolling process with a fixed roll gap after the roll gap of the finishing small vertical roller is calibrated, and compensating for the influence of the calibration accuracy of the finishing small vertical roller, the width of the strip intermediate billet, and the wear of the finishing small vertical roller on the roll gap accuracy of the finishing small vertical roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0053] Figure 1 It is a schematic flow chart of a method for adjusting the roll gap of a finishing small vertical roll provided in the present application;

[0054] Figure 2 It is a structural schematic diagram of the roll gap adjustment device of the finishing small vertical roll provided in the present application;

[0055] Figure 3 It is a structural schematic diagram of the electronic device provided by this application. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0057] Figure 1 Schematic diagram of the flow of the method for adjusting the roll gap of the finishing small vertical roll provided in the embodiment of the present application. Figure 1 The embodiment of the present application provides a method for adjusting the roll gap of a finishing small vertical roll, the execution subject of which may be an electronic device, for example, a controller. The following description is made by taking the execution subject of the method as an example, and the method may include:

[0058] Step 110, before the finishing rolling small vertical roller is loaded, determining the head width of the strip intermediate billet in the previous rolling process and the head loading pressure of the finishing rolling small vertical roller;

[0059] Step 120, determining a preset pressure range corresponding to the head width;

[0060] Step 130, determining whether the head load pressure is within a preset pressure range, and obtaining a determination result;

[0061] Step 140: Based on the judgment result, determine whether to adjust the roll gap of the finishing roll.

[0062] In step 110, before the finishing small vertical roller is loaded, the controller can detect the head width excess of the strip intermediate billet and the head load pressure of the finishing small vertical roller in the previous rolling process to determine whether the head load pressure of the finishing small vertical roller in the previous rolling process is normal. The head width excess means that the head width exceeds the specified width.

[0063] In step 120, the head width of the intermediate billet is different, and the head load pressure of the corresponding finishing small vertical roller is also different. In the present application, different preset pressure ranges can be set for different head widths of the intermediate billet. The controller can determine the preset pressure range corresponding to the head width of the intermediate billet by detecting the size of the head width of the intermediate billet.

[0064] In step 130, the controller can obtain a judgment result by comparing whether the head load pressure of the finishing small vertical roller is within a preset pressure range determined by the excess width of the intermediate billet head.

[0065] In step 140, under normal circumstances, the head load pressure of the finishing small vertical roller should match the preset pressure range corresponding to the width of the intermediate billet head. At this time, the head load pressure of the finishing small vertical roller is normal, and the controller does not need to adjust the roll gap of the finishing small vertical roller. If the head load pressure of the finishing small vertical roller does not match the preset pressure range corresponding to the width of the intermediate billet head, that is, the head load pressure of the finishing small vertical roller exceeds the upper limit of the preset pressure range, or is lower than the lower limit of the preset pressure range, the controller needs to self-learn the roll gap adjustment value of the finishing small vertical roller and adjust the roll gap of the finishing small vertical roller. After the roll gap of the finishing small vertical roller is adjusted, the strip is rolled to ensure that the head load pressure of the finishing small vertical roller is in a more appropriate range, thereby avoiding the deviation of the strip.

[0066] The roll gap adjustment method of the finishing small vertical roller provided in the embodiment of the present application detects the head load pressure of the finishing small vertical roller during the previous rolling. When the head load pressure of the finishing small vertical roller does not match the preset pressure range corresponding to the head width of the strip intermediate billet, the roll gap of the finishing small vertical roller is adjusted by self-learning before the current rolling, and then the current rolling process is continued, so that the rolling pressure of the finishing small vertical roller is continuously present, and the head of the strip is continuously kept in a centered state, thereby improving the strip threading stability, breaking the conventional control mode of starting each rolling process with a fixed roll gap after the roll gap of the finishing small vertical roller is calibrated, and compensating for the influence of the calibration accuracy of the finishing small vertical roller, the width of the strip intermediate billet, and the wear of the finishing small vertical roller on the roll gap accuracy of the finishing small vertical roller.

[0067] In one embodiment, the preset pressure range includes a first preset pressure range and a second preset pressure range; determining the preset pressure range corresponding to the head width exceeds includes: when the head width exceeds is less than or equal to the preset width exceeds, determining the preset pressure range as the first preset pressure range; when the head width exceeds is greater than the preset width exceeds, determining the preset pressure range as the second preset pressure range.

[0068] In the present application, different corresponding pressure ranges, i.e., preset pressure ranges, are set for different intermediate billet head widths. Specifically, when the intermediate billet head width is less than or equal to the preset width (e.g., 15 mm), the preset pressure range is determined to be the first preset pressure range. When the intermediate billet head width is greater than the preset width (e.g., 15 mm), the preset pressure range is determined to be the second preset pressure range.

[0069] The roll gap adjustment method of the finishing small vertical roller provided in the embodiment of the present application is convenient for accurately controlling the roll gap of the finishing small vertical roller by setting different preset pressure ranges for different intermediate billet head widths, thereby ensuring that the rolling pressure of the finishing small vertical roller is normal, thereby being able to continuously keep the strip head in a precisely centered state.

[0070] In one embodiment, the lower limit value and the upper limit value of the first preset pressure range are respectively the first preset value and the second preset value; the lower limit value and the upper limit value of the second preset pressure range are respectively the third preset value and the fourth preset value; the judgment result includes the first judgment result and the second judgment result; judging whether the head load pressure is within the preset pressure range, the judgment result is obtained, including:

[0071] When the preset pressure range is the first preset pressure range, the relationship between the head load pressure and the first preset value and the second preset value is judged to obtain a first judgment result; when the preset pressure range is the second preset pressure range, the relationship between the head load pressure and the third preset value and the fourth preset value is judged to obtain a second judgment result.

[0072] The first preset pressure range is between the first preset value and the second preset value. In the present application, the first preset value can be 80KN, and the second preset value can be 200KN. Accordingly, the first preset pressure range is 80-200KN (including the boundary value). The second preset pressure range is between the third preset value and the fourth preset value. In the present application, the third preset value can be 80KN, and the fourth preset value can be 250KN. Accordingly, the second preset pressure range is 80-250KN (including the boundary value).

[0073] After determining the preset pressure range, the controller can determine whether the head load pressure of the finishing small vertical roller is within the preset pressure range. Specifically, when the preset pressure range is the first preset pressure range (80-200KN), the head load pressure of the finishing small vertical roller is determined to have a magnitude relationship with the first preset value 80KN and the second preset value 200KN, and a first judgment result is obtained. When the preset pressure range is the second preset pressure range (80-250KN), the head load pressure of the finishing small vertical roller is determined to have a magnitude relationship with the third preset value 80KN and the fourth preset value 250KN, and a second judgment result is obtained.

[0074] The roll gap adjustment method of the finishing small vertical roller provided in the embodiment of the present application can determine whether the current load pressure on the head of the small vertical roller is within a normal range by judging whether the load pressure on the head of the finishing small vertical roller is within a preset pressure range, thereby providing data support for adjusting the roll gap of the small vertical roller.

[0075] In one embodiment, based on the judgment result, determining whether to adjust the roll gap of the finishing small vertical roller includes: when the first judgment result is that the head load pressure is within the first preset pressure range, not adjusting the roll gap of the finishing small vertical roller; when the first judgment result is that the head load pressure is not within the first preset pressure range, adjusting the roll gap of the finishing small vertical roller; when the second judgment result is that the head load pressure is within the second preset pressure range, not adjusting the roll gap of the finishing small vertical roller; when the second judgment result is that the head load pressure is not within the second preset pressure range, adjusting the roll gap of the finishing small vertical roller.

[0076] The controller can determine whether the small vertical roller gap needs to be adjusted by judging whether the head load pressure of the small vertical roller is within the preset pressure range. Specifically, when the first judgment result is that the head load pressure of the small vertical roller (for example: 100KN) is within the first preset pressure range, that is, the head load pressure is greater than or equal to the first preset value 80KN, and less than or equal to the second preset value 200KN, the head load pressure of the small vertical roller is normal, and the gap of the small vertical roller is not adjusted; when the first judgment result is that the head load pressure of the small vertical roller is not within the first preset pressure range, that is, the head load pressure is less than the first preset value 80KN, or the head load pressure of the small vertical roller is greater than the second preset value 200KN, the head load pressure of the small vertical roller is abnormal, and the gap of the small vertical roller is self-learned according to the pressure value, and the gap of the small vertical roller is adjusted.

[0077] When the second judgment result is that the head load pressure of the small finishing roller (for example: 150KN) is within the second preset pressure range, that is, the head load pressure is greater than or equal to the third preset value 80KN, and the head load pressure of the small finishing roller is less than or equal to the fourth preset value 250KN, the head load pressure of the small finishing roller is normal, and the roll gap of the small finishing roller is not adjusted; when the second judgment result is that it is not within the second preset pressure range, that is, the head load pressure of the small finishing roller is less than the third preset value 80KN, or the head load pressure of the small finishing roller is greater than the fourth preset value 250KN, the head load pressure of the small finishing roller is abnormal, and the roll gap of the small finishing roller is self-learned according to the pressure value, and the roll gap of the small finishing roller is adjusted.

[0078] The roll gap adjustment method of the finishing small vertical roller provided in the embodiment of the present application can determine whether the current load pressure on the head of the small vertical roller is within a normal range by judging whether the load pressure on the head of the finishing small vertical roller is within a preset pressure range, thereby providing data support for adjusting the roll gap of the small vertical roller.

[0079] In one embodiment, when the first judgment result is that the head load pressure is not within the first preset pressure range, the roll gap of the finishing small vertical roller is adjusted, including: when the head load pressure is less than the first preset value, determining a first deviation value between the head load pressure and the first preset value; based on the first deviation value, determining a first roll gap learning value; based on the first roll gap learning value, reducing the roll gap of the finishing small vertical roller; or: when the head load pressure is greater than the second preset value, determining a second deviation value between the head load pressure and the second preset value; based on the second deviation value, determining a second roll gap learning value; based on the second roll gap learning value, increasing the roll gap of the finishing small vertical roller.

[0080] Further, in one embodiment, when the second judgment result is that the head load pressure is not within the second preset pressure range, the roll gap of the finishing small vertical roller is adjusted, including: when the head load pressure is less than the third preset value, determining a third deviation value between the head load pressure and the third preset value; based on the third deviation value, determining a third roll gap learning value; based on the third roll gap learning value, reducing the roll gap of the finishing small vertical roller; or: when the head load pressure is greater than the fourth preset value, determining a fourth deviation value between the head load pressure and the fourth preset value; based on the fourth deviation value, determining a fourth roll gap learning value; based on the fourth roll gap learning value, increasing the roll gap of the finishing small vertical roller.

[0081] Specifically, when the width of the intermediate billet head exceeds 12mm (less than the preset width of 15mm), the preset pressure range is the first preset pressure range of 80-200KN. At this time, if the head load pressure of the finishing small vertical roller is 20KN, the controller determines that the head load pressure of the finishing small vertical roller is less than the first preset value 80KN, and calculates the first deviation value 60KN between the head load pressure of the finishing small vertical roller 20KN and the first preset value 80KN. Based on the first deviation value 60KN, the first roll gap learning value N1 is determined, and the roll gap of the finishing small vertical roller is reduced by N1. In this application, the maximum learning value of each finishing small vertical roller is set, that is, the preset learning threshold (for example: 3mm, 4mm), and N1 is not greater than the preset learning threshold.

[0082] When the width of the intermediate billet head exceeds 12mm (less than the preset width of 15mm), the preset pressure range is the first preset pressure range of 80-200KN. At this time, if the head load pressure of the finishing small vertical roller is 260KN, the controller determines that the head load pressure of the finishing small vertical roller is greater than the second preset value of 200KN, and calculates the second deviation value 60KN between the head load pressure of the finishing small vertical roller 260KN and the second preset value 200KN. Based on the second deviation value 60KN, the second roll gap learning value N2 is determined, and the roll gap of the finishing small vertical roller is increased by N2. N2 is not greater than the preset learning threshold.

[0083] Similarly, when the width of the intermediate billet head is greater than the preset width, the preset pressure range is the second preset pressure range. The controller can calculate the third deviation value and the fourth deviation value to determine the third roll gap learning value N3 and the fourth roll gap learning value N4, thereby reducing or increasing the roll gap of the finishing small vertical roll.

[0084] The roll gap adjustment method for the finishing small vertical roller provided in the embodiment of the present application calculates the deviation value between the head load pressure of the finishing small vertical roller and the preset pressure range, thereby determining the roll gap learning value, and adjusting the roll gap of the finishing small vertical roller. By accurately adjusting the roll gap, the head of the strip can be continuously kept in a centered state, breaking the conventional control mode of starting each rolling process with a fixed roll gap after the roll gap of the finishing small vertical roller is calibrated, and compensating for the influence of the calibration accuracy of the finishing small vertical roller, the width of the intermediate billet of the strip, and the wear of the finishing small vertical roller on the roll gap accuracy of the finishing small vertical roller.

[0085] In one embodiment, determining the first roll gap learning value based on the first deviation value includes: dividing the first deviation value by a preset adjustment value to obtain the first roll gap learning value.

[0086] In the process of adjusting the roll gap of the finishing small vertical roll, the controller can determine the first roll gap learning value based on the first deviation value. For example, the preset adjustment value is set to 30KN / mm, and the first deviation value 60KN is divided by the preset adjustment value 30KN / mm to obtain the first roll gap learning value N1 of 2mm. Correspondingly, the second roll gap learning value is determined by the second deviation value; the third roll gap learning value is determined by the third deviation value; and the fourth roll gap learning value is determined by the fourth deviation value. This method can also be used for calculation.

[0087] The roll gap adjustment method of the finishing small vertical roller provided in the embodiment of the present application determines the roll gap learning value through the deviation value between the head load pressure of the finishing small vertical roller and the preset pressure range, thereby adjusting the roll gap of the finishing small vertical roller, and can continuously keep the head of the strip in a centered state.

[0088] In one embodiment, the method for adjusting the roll gap of the finishing small vertical roller further includes: when the cumulative adjustment amount of the roll gap of the finishing small vertical roller is greater than a preset adjustment threshold, recalibrating the roll gap of the finishing small vertical roller.

[0089] In the present application, the maximum learning range of the roll gap of the finishing small vertical roller can be set, that is, the preset adjustment threshold, for example, 10mm. When the cumulative adjustment amount of each finishing small vertical roller is greater than 10mm, there may be a problem with the calibration accuracy of the finishing small vertical roller. At this time, the roll gap of the finishing small vertical roller can be recalibrated.

[0090] The roll gap adjustment method for the finishing small vertical roller provided in the embodiment of the present application can further ensure the centering of the strip head by recalibrating the roll gap of the finishing small vertical roller when there is a problem with the calibration accuracy of the finishing small vertical roller.

[0091] The roll gap adjustment device for the finishing small vertical roller provided in the present application is described below. The roll gap adjustment device for the finishing small vertical roller described below and the roll gap adjustment method for the finishing small vertical roller described above can be referred to each other.

[0092] Figure 2 Schematic diagram of the structure of the roller gap adjustment device for the finishing small vertical roller provided in the embodiment of the present application. Figure 2 The roller gap adjustment device for the finishing small vertical roller provided in the embodiment of the present application may include:

[0093] The first determination module 210 is used to determine the head width of the intermediate steel strip in the previous rolling process and the head load pressure of the finishing small vertical roller before the finishing small vertical roller is loaded;

[0094] A second determination module 220 is used to determine a preset pressure range corresponding to the head width;

[0095] A determination module 230, configured to determine whether the head load pressure is within the preset pressure range, and obtain a determination result;

[0096] The adjustment module 240 is used to determine whether to adjust the roll gap of the finishing roll based on the judgment result.

[0097] The roll gap adjustment device for the finishing small vertical roller provided in the embodiment of the present application detects the head load pressure of the finishing small vertical roller during the previous rolling. When the head load pressure of the finishing small vertical roller does not match the preset pressure range corresponding to the head width of the strip intermediate billet, the roll gap of the finishing small vertical roller is adjusted by self-learning before the current rolling, and then the current rolling process is continued, so that the rolling pressure of the finishing small vertical roller is continuously present, and the head of the strip is continuously kept in a centered state, thereby improving the strip threading stability, breaking the conventional control mode of starting each rolling process with a fixed roll gap after the roll gap of the finishing small vertical roller is calibrated, and compensating for the influence of the calibration accuracy of the finishing small vertical roller, the width of the strip intermediate billet, and the wear of the finishing small vertical roller on the roll gap accuracy of the finishing small vertical roller.

[0098] Specifically, the roll gap adjustment device for the above-mentioned finishing small vertical roll provided in the embodiment of the present application can implement all the method steps implemented by the method embodiment in which the execution subject is the controller, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment in this embodiment will not be described in detail here.

[0099] Figure 3 An example of a physical structure diagram of an electronic device is shown in FIG. Figure 3 As shown, the electronic device may include: a processor 310, a communication interface 320, a memory 330 and a communication bus 340, wherein the processor 310, the communication interface 320 and the memory 330 communicate with each other through the communication bus 340. The processor 310 may call the logic instructions in the memory 330 to execute the roll gap adjustment method of the finishing roll, for example, including:

[0100] Before the finishing rolling small vertical roller is loaded, the head width of the strip intermediate billet in the previous rolling process and the head loading pressure of the finishing rolling small vertical roller are determined;

[0101] Determine a preset pressure range corresponding to the head width;

[0102] Determine whether the head load pressure is within the preset pressure range, and obtain a determination result;

[0103] Based on the judgment result, it is determined whether to adjust the roll gap of the finishing small vertical roll.

[0104] In addition, the logic instructions in the above-mentioned memory 330 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the 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 several instructions to enable 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 application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-On l yMemory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0105] On the other hand, the present application also provides a non-transitory computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of the roll gap adjustment method for the finishing small vertical roll provided by the above methods are implemented, for example, including:

[0106] Before the finishing rolling small vertical roller is loaded, the head width of the strip intermediate billet in the previous rolling process and the head loading pressure of the finishing rolling small vertical roller are determined;

[0107] Determine a preset pressure range corresponding to the head width;

[0108] Determine whether the head load pressure is within the preset pressure range, and obtain a determination result;

[0109] Based on the judgment result, it is determined whether to adjust the roll gap of the finishing small vertical roll.

[0110] On the other hand, the present application further provides a computer program product, the computer program product includes a computer program, the computer program can be stored in a non-transitory computer-readable storage medium, when the computer program is executed by a processor, the computer can execute the steps of the roll gap adjustment method of the finishing small vertical roll provided by the above methods, for example, including:

[0111] Before the finishing rolling small vertical roller is loaded, the head width of the strip intermediate billet in the previous rolling process and the head loading pressure of the finishing rolling small vertical roller are determined;

[0112] Determine a preset pressure range corresponding to the head width;

[0113] Determine whether the head load pressure is within the preset pressure range, and obtain a determination result;

[0114] Based on the judgment result, it is determined whether to adjust the roll gap of the finishing small vertical roll.

[0115] The device embodiments described above are merely illustrative, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without paying creative labor.

[0116] Through the description of the above implementation methods, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus a necessary general hardware platform, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solution is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, a disk, an optical disk, etc., including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each embodiment or some parts of the embodiments.

[0117] It should also be noted that the terms "first", "second", etc. in the embodiments of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more.

[0118] In the embodiments of the present application, the term "and / or" describes the association relationship of the associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0119] "Determine B based on A" in the embodiments of the present application means that the factor A should be considered when determining B. It is not limited to "B can be determined based on A alone", but should also include: "Determine B based on A and C", "Determine B based on A, C and E", "Determine C based on A, and further determine B based on C", etc. In addition, it can also include taking A as a condition for determining B, for example, "When A meets the first condition, use the first method to determine B"; for another example, "When A meets the second condition, determine B", etc.; for another example, "When A meets the third condition, determine B based on the first parameter", etc. Of course, it can also be a condition that takes A as a factor for determining B, for example, "When A meets the first condition, use the first method to determine C, and further determine B based on C", etc.

[0120] In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0121] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for adjusting the roll gap of a finishing small vertical roll, characterized in that: include: Before the finishing rolling small vertical roller is loaded, the head width of the strip intermediate billet in the previous rolling process and the head loading pressure of the finishing rolling small vertical roller are determined; Determine a preset pressure range corresponding to the head width; Determine whether the head load pressure is within the preset pressure range, and obtain a determination result; Based on the judgment result, it is determined whether to adjust the roll gap of the finishing small vertical roll.

2. The method for adjusting the roll gap of the finishing small vertical roll according to claim 1, characterized in that: The preset pressure range includes a first preset pressure range and a second preset pressure range; The determining of the preset pressure range corresponding to the head width includes: When the head width is less than or equal to the preset width, determining the preset pressure range as the first preset pressure range; When the head width is greater than the preset width, the preset pressure range is determined to be the second preset pressure range.

3. The method for adjusting the roll gap of the finishing small vertical roll according to claim 2, characterized in that: The lower limit value and the upper limit value of the first preset pressure range are respectively the first preset value and the second preset value; the lower limit value and the upper limit value of the second preset pressure range are respectively the third preset value and the fourth preset value; the judgment result includes the first judgment result and the second judgment result; The determining whether the head load pressure is within the preset pressure range and obtaining the determination result includes: When the preset pressure range is the first preset pressure range, determining the magnitude relationship between the head load pressure and the first preset value and the second preset value to obtain the first determination result; When the preset pressure range is the second preset pressure range, the magnitude relationship between the head load pressure and the third preset value and the fourth preset value is determined to obtain the second determination result.

4. The method for adjusting the roll gap of the finishing small vertical roll according to claim 3, characterized in that: The step of determining whether to adjust the roll gap of the finishing small vertical roll based on the judgment result includes: When the first judgment result is that the head load pressure is within the first preset pressure range, the roll gap of the finishing vertical roll is not adjusted; When the first judgment result is that the head load pressure is not within the first preset pressure range, adjusting the roll gap of the finishing roll; When the second judgment result is that the head load pressure is within the second preset pressure range, the roll gap of the finishing small vertical roll is not adjusted; When the second judgment result is that the head load pressure is not within the second preset pressure range, the roll gap of the finishing vertical roll is adjusted.

5. The method for adjusting the roll gap of the finishing small vertical roll according to claim 4, characterized in that: When the first judgment result is that the head load pressure is not within the first preset pressure range, adjusting the roll gap of the finishing small vertical roll comprises: When the head load pressure is less than the first preset value, determining a first deviation value between the head load pressure and the first preset value; determining a first roll gap learning value based on the first deviation value; Based on the first roll gap learning value, reducing the roll gap of the finishing small vertical roll; or: When the head load pressure is greater than the second preset value, determining a second deviation value between the head load pressure and the second preset value; determining a second roll gap learning value based on the second deviation value; Based on the second roll gap learned value, the roll gap of the finishing vertical roll is increased.

6. The method for adjusting the roll gap of the finishing small vertical roll according to claim 4, characterized in that: When the second judgment result is that the head load pressure is not within the second preset pressure range, adjusting the roll gap of the finishing small vertical roll comprises: When the head load pressure is less than the third preset value, determining a third deviation value between the head load pressure and the third preset value; determining a third roll gap learning value based on the third deviation value; Based on the third roll gap learning value, reducing the roll gap of the finishing small vertical roll; or: In a case where the head load pressure is greater than the fourth preset value, determining a fourth deviation value between the head load pressure and the fourth preset value; determining a fourth roll gap learning value based on the fourth deviation value; Based on the fourth roll gap learning value, the roll gap of the finishing vertical roll is increased.

7. The method for adjusting the roll gap of the finishing vertical roll according to claim 5, characterized in that: The determining a first roll gap learning value based on the first deviation value includes: The first roller gap learning value is obtained by dividing the first deviation value by a preset adjustment value.

8. The method for adjusting the roll gap of a finishing roll according to any one of claims 1 to 7, characterized in that: Also includes: When the cumulative adjustment amount of the roll gap of the finishing small vertical roller is greater than the preset adjustment threshold, the roll gap of the finishing small vertical roller is recalibrated.

9. A roller gap adjustment device for finishing small vertical rollers, characterized in that: include: The first determination module is used to determine the head width of the strip intermediate billet and the head load pressure of the finishing small vertical roller before the finishing small vertical roller is loaded; A second determination module is used to determine a preset pressure range corresponding to the head width; A judgment module, used to judge whether the head load pressure is within the preset pressure range and obtain a judgment result; The adjustment module is used to determine whether to adjust the roll gap of the finishing small vertical roll based on the judgment result.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the roll gap adjustment method for the finishing small vertical roll according to any one of claims 1 to 8 is implemented.

Images