CN114247757B - Control method for automatic steel turning of wide and thick plate rolling line - Google Patents
Control method for automatic steel turning of wide and thick plate rolling line Download PDFInfo
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- CN114247757B CN114247757B CN202111515949.1A CN202111515949A CN114247757B CN 114247757 B CN114247757 B CN 114247757B CN 202111515949 A CN202111515949 A CN 202111515949A CN 114247757 B CN114247757 B CN 114247757B
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 151
- 239000010959 steel Substances 0.000 title claims abstract description 151
- 238000005096 rolling process Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000007704 transition Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 claims 1
- 238000012546 transfer Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/20—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands
- B21B39/24—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands by tongs or grippers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B39/20—Revolving, turning-over, or like manipulation of work, e.g. revolving in trio stands
- B21B39/32—Devices specially adapted for turning sheets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a control method for automatic steel conversion of a wide and thick plate rolling line, and belongs to the technical field of metallurgical automation. According to the method, the steel plate rotates anticlockwise at the inlet side of the rolling mill, rotates clockwise at the outlet side of the rolling mill, a target angle is calculated according to the length and the width of the steel plate, an included angle between one side of the steel plate adjacent to the side guide plate before steel rotation and the side of the side guide plate is identified in real time by using machine vision, the speeds of two groups of crossed conical steel rotating roller ways are controlled according to the deviation of the angle value and the target angle, after the steel plate is detected to rotate to the target angle, the steel rotating roller way stops, the side guide plate clamping is started, the deviation of the opening of the side guide plate and the length of the steel plate before steel rotation when the steel plate is clamped in place is calculated, and the steel rotation is considered to be completed when the deviation is within an allowable range, and the subsequent rolling is continued. The control method can realize automatic steel turning, ensure that the steel plate can not enter the rolling mill in the steel turning process, alarm in time when the steel turning is problematic, and reduce the labor load of operators.
Description
Technical Field
The invention relates to the technical field of metallurgical automation, in particular to a control method for automatic steel turning of a wide and thick plate rolling line.
Background
In the production of the wide and thick plates, the control of the width of the finished product is realized by turning steel, and the process control system is set at a certain pass through a model according to the specification requirement of the width of the finished product, namely, the steel plate is rotated by 90 degrees, so that the length and the width are exchanged, and the width control of the final finished steel plate is realized. The steel turning of most wide and thick plate factories requires an operator to manually operate a steel turning handle to control the speed of a steel turning roller according to video monitoring, and when a steel billet is turned to a proper angle, a confirmation button is operated to start side guide plate clamping. Because each steel transferring pass of each steel is required to be manually transferred, the operators are stressed and have high labor intensity.
Disclosure of Invention
The invention aims to solve the technical problem of providing the control method for automatically transferring steel in the wide and thick plate rolling line, which can realize automatic steel transfer, ensure that a steel plate cannot enter a rolling mill in the steel transfer process and can give an alarm in time when the steel transfer is problematic, and reduce the labor load of operators.
The method comprises the following steps:
s1: the steel plate adopts anticlockwise steel rotation at the inlet side of the rolling mill, and the steel plate adopts clockwise steel rotation at the outlet side of the rolling mill;
s2: calculating a target angle beta of steel turning;
calculating an included angle alpha between the diagonal line of the steel plate and the side of the length direction of the steel plate according to the length L and the width W of the steel plate, and setting a target angle beta=90-alpha DEG+delta, wherein the target angle of the steel plate at the inlet side is as follows: beta λ The target angle for exit side transition steel is =90 ° - α° +Δ: beta Out of = - (90 ° - α° +Δ); wherein delta is the angle margin;
s3: adopting machine vision to track and identify the included angle beta' between the edge of the guide plate on the transmission side and the edge of the steel plate next to the guide plate before steel conversion, and when the steel is converted on the inlet side, adopting the method that the steel is converted on the inlet side Into (I) < 0 DEG or exit side transition steel, beta' -beta Out of When the angle is more than 0 DEG, two groups of opposite steel rotating roller ways rotate at opposite speeds; when the steel is turned at the inlet side, beta' -beta Into (I) Steel with angle of 0 degree or more or outlet side rotation, beta' -beta Out of When the angle is less than or equal to 0 ℃, the steel rotating roller way stops and the side guide plate is started to clamp; stopping steel turning when the steel plate is detected to be partially moved out of the side guide plate or the steel turning speed is output but the steel turning angle is unchanged in the steel turning process, and giving an alarm;
s4: detecting deviation of the opening degree of the side guide plate and the length of the steel plate before turning steel when the side guide plate is clamped in place, and considering that turning steel is finished when the deviation is within an allowable range, continuing subsequent rolling, otherwise, giving an alarm.
Wherein, the value range of the angle allowance delta in S2 is 13 degrees to alpha degrees.
Deviation of the opening degree of the side guide plate from the length of the steel plate before turning when the side guide plate is clamped in place in S4 = opening degree of the side guide plate when clamped in place-length of the steel plate before turning. The allowable range of deviation between the opening degree of the side guide plate and the length of the steel plate before steel conversion when the side guide plate is clamped in place is determined according to the actual condition of the site. The allowable deviation range is generally + -100 mm.
The technical scheme of the invention has the following beneficial effects:
according to the scheme, automatic steel turning can be achieved, the steel plate can be prevented from entering a rolling mill in the steel turning process, and timely alarming can be achieved when the steel turning is problematic, so that the labor load of operators is reduced.
Drawings
FIG. 1 is an automatic turning front steel plate position of the control method for automatic turning of wide and thick plate rolling lines of the present invention;
FIG. 2 is an automatic turning counterclockwise reference angle of the automatic turning steel of the control method for the rolling line of the wide and thick plates of the invention;
FIG. 3 is a clockwise rotation reference angle of the automatic turning steel of the control method for automatic turning steel of the wide and thick plate rolling line of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
The invention provides a control method for automatic steel turning of a wide and thick plate rolling line.
The method comprises the following steps:
s1: the steel plate adopts anticlockwise steel rotation at the inlet side of the rolling mill, and the steel plate adopts clockwise steel rotation at the outlet side of the rolling mill;
s2: calculating a target angle beta of steel turning;
calculating an included angle alpha between the diagonal line of the steel plate and the side of the length direction of the steel plate according to the length L and the width W of the steel plate, and setting a target angle beta=90-alpha DEG+delta, wherein the target angle of the steel plate at the inlet side is as follows: βin=90 ° - α° +Δ, the target angle of the exit side transition steel is: beta Out of = - (90 ° - α° +Δ); wherein delta is the angle margin;
S3: adopting machine vision to track and identify the included angle beta' between the edge of the guide plate on the transmission side and the edge of the steel plate next to the guide plate before steel conversion, and when the steel is converted on the inlet side, adopting the method that the steel is converted on the inlet side λ < 0 DEG or exit side transition steel, beta' -beta Out of When the angle is more than 0 DEG, two groups of opposite steel rotating roller ways rotate at opposite speeds; when the steel is turned at the inlet side, beta' -beta Into (I) Steel with angle of 0 degree or more or outlet side rotation, beta' -beta Out of When the angle is less than or equal to 0 ℃, the steel rotating roller way stops and the side guide plate is started to clamp; stopping steel turning when the steel plate is detected to be partially moved out of the side guide plate or the steel turning speed is output but the steel turning angle is unchanged in the steel turning process, and giving an alarm;
s4: detecting deviation of the opening degree of the side guide plate and the length of the steel plate before turning steel when the side guide plate is clamped in place, and considering that turning steel is finished when the deviation is within an allowable range, continuing subsequent rolling, otherwise, giving an alarm.
In the process of calculating the target angle in S2, theoretically, in the range of rotating the steel plate clockwise or anticlockwise by 180 degrees, when the included angle beta=90 ° -alpha° or beta=90 ° +alpha° between the edge part of the steel plate before steel conversion and the edge part of the side guide plate on the transmission side is smaller than or equal to 0 ° -alpha° or 90 ° +alpha° and smaller than or equal to 180 degrees, the length and the width of the steel plate after clamping the side guide plate are kept unchanged when beta is smaller than or equal to 0 ° -alpha° or 90 ° +alpha° and smaller than or equal to 180 °), and the length and the width of the steel plate after clamping the side guide plate can be adjusted when 90 ° -alpha ° < beta is smaller than 90 ° +alpha°. In order to save the steel turning time and reduce the abrasion of the side guide plates, the angle allowance delta is increased on the basis of the minimum boundary angle of 90 DEG-alpha DEG, the target angle beta=90 DEG-alpha DEG+delta is set, and the clockwise rotation angle of the steel plate is negative and the anticlockwise rotation angle is positive when the steel plate is observed from the operation side direction of the rolling mill. The target angle of the inlet side transition steel is: beta=90 ° - α° +Δ, the target angle of the exit side transition steel is: beta= - (90 ° - α° +Δ), as shown in fig. 1, 2 and 3.
For example: the steel plate is rotated anticlockwise along the rolling line direction, the steel plate length L is 4000mm, the steel plate width is 3000mm, the angle allowance delta=15°, the steel plate is arranged at the inlet side of the rolling mill, and the angle alpha DEG=arctg 3/4=36.87°, beta=between the diagonal line of the steel plate and the edge of the steel plate in the length direction is formed by adopting anticlockwise steel rotation90 ° -36.87 ° +15° =68.13°, the allowable range of the deviation between the opening degree of the side guide after clamping in place and the length of the steel sheet before turning is ±100mm, when the actual angle β 'deviates from β by β' - β λ At < 0 DEG, two sets of opposed steel-turning rolls run at +2m/s and-2 m/s, respectively, when beta' -beta λ When the opening degree of the side guide plates is more than or equal to 0 DEG, two groups of opposite steel rotating roller ways stop, the side guide plates are started to clamp, and after the side guide plates are clamped in place, if the opening degree of the side guide plates is more than or equal to 4000mm and less than or equal to 100mm, the steel rotating is considered to be completed.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (4)
1. The control method for automatic steel turning of the wide and thick plate rolling line is characterized by comprising the following steps:
s1: the steel plate adopts anticlockwise steel rotation at the inlet side of the rolling mill, and the steel plate adopts clockwise steel rotation at the outlet side of the rolling mill;
s2: calculating a target angle beta of steel turning;
calculating an included angle alpha between the diagonal line of the steel plate and the side of the length direction of the steel plate according to the length L and the width W of the steel plate, and setting a target angle beta=90-alpha DEG+delta, wherein the target angle of the steel plate at the inlet side is as follows: beta Into (I) The target angle for exit side transition steel is =90 ° - α° +Δ: beta Out of = - (90 ° - α° +Δ); wherein delta is the angle margin;
the value range of the angle margin delta in the S2 is 13-alpha degrees;
s3: adopting machine vision to track and identify the included angle beta' between the edge of the guide plate on the transmission side and the edge of the steel plate next to the guide plate before steel conversion, and when the steel is converted on the inlet side, adopting the method that the steel is converted on the inlet side Into (I) < 0 DEG or exit side transition steel, beta' -beta Out of When the angle is more than 0 DEG, two groups of opposite steel rotating roller ways rotate at opposite speeds; when the steel is turned at the inlet side, beta' -beta Into (I) Steel with angle of 0 degree or more or outlet side rotation, beta' -beta Out of When the angle is less than or equal to 0 ℃, the steel rotating roller way stops and the side guide plate is started to clamp; detection in the process of turning steelStopping steel turning when the steel plate is partially moved out of the side guide plate or the steel turning speed is output but the steel turning angle is unchanged, and giving an alarm;
s4: detecting deviation of the opening degree of the side guide plate and the length of the steel plate before turning steel when the side guide plate is clamped in place, and considering that turning steel is finished when the deviation is within an allowable range, continuing subsequent rolling, otherwise, giving an alarm.
2. The control method for automatic steel turning of the wide and thick plate rolling line according to claim 1, wherein the speed of high-speed rotation of the steel turning roller way in the step S3 is 2-2.5m/S.
3. The method for controlling automatic turning of a wide and thick plate rolling line according to claim 1, wherein the allowable deviation range in S4 is ±100mm.
4. The method for controlling automatic turning of a wide and thick plate rolling line according to claim 1, wherein the deviation of the opening degree of the side guide plate from the length of the steel plate before turning in S4 = the opening degree of the side guide plate when clamped in place-the length of the steel plate before turning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111515949.1A CN114247757B (en) | 2021-12-02 | 2021-12-02 | Control method for automatic steel turning of wide and thick plate rolling line |
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| CN202111515949.1A CN114247757B (en) | 2021-12-02 | 2021-12-02 | Control method for automatic steel turning of wide and thick plate rolling line |
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| Publication Number | Publication Date |
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| CN114247757A CN114247757A (en) | 2022-03-29 |
| CN114247757B true CN114247757B (en) | 2023-10-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115446125B (en) * | 2022-08-16 | 2024-02-02 | 北京科技大学 | Automatic steel-turning control method for medium plate based on machine vision |
Citations (9)
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| JP2007130672A (en) * | 2005-11-11 | 2007-05-31 | Jfe Steel Kk | Slab rolling method |
| CN101574709A (en) * | 2009-06-12 | 2009-11-11 | 东北大学 | Automatic steel rotation method for medium plates |
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-
2021
- 2021-12-02 CN CN202111515949.1A patent/CN114247757B/en active Active
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| JPH10263666A (en) * | 1997-03-25 | 1998-10-06 | Kawasaki Steel Corp | Method for rolling metal plate and device therefor |
| KR19990053855A (en) * | 1997-12-24 | 1999-07-15 | 이구택 | Method for manufacturing a steel sheet with excellent corner perpendicularity |
| KR20030054691A (en) * | 2001-12-26 | 2003-07-02 | 주식회사 포스코 | Method for estimating and preventing width deviation of strip in strip roll process |
| JP2007130672A (en) * | 2005-11-11 | 2007-05-31 | Jfe Steel Kk | Slab rolling method |
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| CN103752622A (en) * | 2013-12-23 | 2014-04-30 | 宝山钢铁股份有限公司 | Heavy plate rolling control method for removing defect on edge of continuous casting bloom |
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