CN114247757A - Control method for automatic steel rotation of wide and thick plate rolling line - Google Patents
Control method for automatic steel rotation of wide and thick plate rolling line Download PDFInfo
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- CN114247757A CN114247757A CN202111515949.1A CN202111515949A CN114247757A CN 114247757 A CN114247757 A CN 114247757A CN 202111515949 A CN202111515949 A CN 202111515949A CN 114247757 A CN114247757 A CN 114247757A
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- steel
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- side guide
- rotation
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 152
- 239000010959 steel Substances 0.000 title claims abstract description 152
- 238000005096 rolling process Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
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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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention provides a control method for automatic steel rotation of a wide and thick plate rolling line, belonging to the technical field of metallurgy automation. According to the method, a steel plate rotates anticlockwise at the inlet side of a rolling mill, a steel plate 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 close to a side guide plate and the edge of the side guide plate before steel rotation is recognized in real time by using machine vision, the speed of two groups of crossed conical steel rotating roller ways is controlled according to the deviation of the angle value and the target angle, when the steel plate is detected to rotate to the target angle, the steel rotating roller ways stop, the side guide plate clamping is started, the deviation of the opening degree of the side guide plate and the length of the steel plate before steel rotation when the clamping is in place is calculated, when the deviation is within an allowable range, the steel rotation is considered to be completed, and subsequent rolling is continued. The control method can realize automatic steel transfer, and can ensure that the steel plate does not enter a rolling mill in the steel transfer process and can give an alarm in time when the steel transfer is in a problem, thereby reducing the labor load of operators.
Description
Technical Field
The invention relates to the technical field of metallurgy automation, in particular to a control method for automatic steel rotation of a wide and thick plate rolling line.
Background
In the production of the wide and thick plate, the control of the width of the finished product is realized by rotating steel, and the process control system sets the steel rotation in 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 that changes of most wide and thick plate factory needs operating personnel to change steel handle control according to the manual operation of video monitoring and changes steel roller way speed, and after the steel billet rotated suitable angle, the operation was confirmed the button, was started the side guide centre gripping. Because each steel turning pass of each piece of steel needs manual steel turning operation, the mental stress of operators is high, and the labor intensity is high.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a control method for automatic steel transfer of a 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 a problem occurs in steel transfer, and reduce the labor load of operators.
The method comprises the following steps:
s1: the steel plate is rotated anticlockwise on the inlet side of the rolling mill, and the steel plate is rotated clockwise on the outlet side of the rolling mill;
s2: calculating a target angle beta of steel rotation;
calculating an included angle alpha between a diagonal line of the steel plate and a side of the steel plate in the length direction according to the length L and the width W of the steel plate, and setting a target angle beta to be 90-alpha + delta, wherein the target angle of the inlet side-turning steel is as follows: beta is aλThe target angle of the outlet side-turn steel is 90 ° - α ° + Δ: beta is aGo out-90 ° - α ° + Δ; wherein Δ is an angle margin;
s3: adopting machine vision tracking to identify the included angle beta 'between the edge of the side guide plate at the transmission side and the edge of the steel plate which is next to the side guide plate before the steel is rotated when the steel is rotated at the inlet side, wherein the included angle beta' is betaIntoLess than 0 degree or outlet side-rotating steel, beta' -betaGo outWhen the angle is more than 0 degree, the two groups of opposite steel rotating roller ways rotate at high speed at opposite speed;when the inlet is turned sideways, beta' -betaIntoNot less than 0 degree or outlet side-turning steel, beta' -betaGo outWhen the temperature is less than or equal to 0 ℃, stopping the steel rotating roller way and starting the side guide plates for clamping; when the steel plate is detected to be partially moved out of the side guide plate or the steel rotating speed is output but the steel rotating angle is unchanged in the steel rotating process, stopping steel rotating, and giving an alarm;
s4: and detecting the deviation between the opening of the side guide plate and the length of the steel plate before steel turning when the side guide plate is clamped in place, considering that the steel turning is finished when the deviation is within an allowable range, continuing the subsequent rolling, and otherwise, alarming.
Wherein, the value range of the angle allowance delta in the S2 is 13 degrees to alpha degrees.
In S4, the deviation between the opening of the side guide when the side guide is clamped in place and the length of the steel plate before turning is the opening of the side guide when the side guide is clamped in place-the length of the steel plate before turning. And when the steel plate is clamped in place, the deviation allowable range of the opening of the side guide plate and the length of the steel plate before steel turning is determined according to the actual situation on site. The tolerance range of the deviation is generally + -100 mm.
The technical scheme of the invention has the following beneficial effects:
in the scheme, automatic steel rotation can be realized, a steel plate cannot enter a rolling mill in the steel rotation process, and an alarm can be given in time when the steel rotation is in a problem, so that the labor load of operators is reduced.
Drawings
FIG. 1 is a steel plate position before automatic steel rotation of the control method for automatic steel rotation of a wide and thick plate rolling line according to the invention;
FIG. 2 is a reference angle of the automatic steel rotating in the counterclockwise direction of the control method of the automatic steel rotating in the wide and thick plate rolling line of the present invention;
FIG. 3 shows the reference angle of the automatic steel rotating in the clockwise direction of the control method of the automatic steel rotating in the wide and thick plate rolling line of the invention.
Detailed Description
In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.
The invention provides a control method for automatic steel rotation of a wide and thick plate rolling line.
The method comprises the following steps:
s1: the steel plate is rotated anticlockwise on the inlet side of the rolling mill, and the steel plate is rotated clockwise on the outlet side of the rolling mill;
s2: calculating a target angle beta of steel rotation;
calculating an included angle alpha between a diagonal line of the steel plate and a side of the steel plate in the length direction according to the length L and the width W of the steel plate, and setting a target angle beta to be 90-alpha + delta, wherein the target angle of the inlet side-turning steel is as follows: β -in is 90 ° - α ° + Δ, and the target angle of the steel for exit side rotation is: beta is aGo out-90 ° - α ° + Δ; wherein Δ is an angle margin;
s3: adopting machine vision tracking to identify the included angle beta 'between the edge of the side guide plate at the transmission side and the edge of the steel plate which is next to the side guide plate before the steel is rotated when the steel is rotated at the inlet side, wherein the included angle beta' is betaλLess than 0 degree or outlet side-rotating steel, beta' -betaGo outWhen the angle is more than 0 degree, the two groups of opposite steel rotating roller ways rotate at high speed at opposite speed; when the inlet is turned sideways, beta' -betaIntoNot less than 0 degree or outlet side-turning steel, beta' -betaGo outWhen the temperature is less than or equal to 0 ℃, stopping the steel rotating roller way and starting the side guide plates for clamping; when the steel plate is detected to be partially moved out of the side guide plate or the steel rotating speed is output but the steel rotating angle is unchanged in the steel rotating process, stopping steel rotating, and giving an alarm;
s4: and detecting the deviation between the opening of the side guide plate and the length of the steel plate before steel turning when the side guide plate is clamped in place, considering that the steel turning is finished when the deviation is within an allowable range, continuing the subsequent rolling, and otherwise, alarming.
In the process of calculating the target angle in S2, theoretically, when the steel plate rotates clockwise or counterclockwise by 180 °, a diagonal of the steel plate is perpendicular to the edge of the side guide plate when an angle β between the edge of the side guide plate on the transmission side and the edge of the side guide plate on the transmission side is 90 ° - α ° or 90 ° + α °, and the steel plate is held stationary by the side guide plate, when β is not less than 0 ° and not more than 90 ° - α ° or 90 ° + α ° and not more than 180 °, the length and width of the steel plate held by the side guide plate are kept constant, and when β is not less than 90 ° - β and not more than 90 ° + α °, the length and width of the steel plate held by the side guide plate can be changed. In order to save steel turning time and reduce the abrasion of the side guide plates, an angle allowance delta is added on the basis of the minimum boundary angle of 90 degrees to alpha degrees, a target angle beta is set to be 90 degrees to alpha degrees plus delta, and the clockwise rotation angle of the steel plate is defined to be negative and the anticlockwise rotation angle of the steel plate is defined to be positive when the steel plate is observed from the operation side direction of the rolling mill. The target angle of the inlet side turn steel is then: β is 90 ° - α ° + Δ, and the target angle of the steel for the outlet side rotation is: β ═ - (90 ° - α ° + Δ), as shown in fig. 1, 2, and 3.
For example: the length L of the steel plate is 4000mm, the width of the steel plate is 3000mm, the angle margin delta is 15 degrees, the steel plate is arranged at the inlet side of the rolling mill, anticlockwise steel turning is adopted, the included angle alpha between the diagonal line of the steel plate and the edge of the length direction of the steel plate is arctg3/4 is 36.87 degrees, beta is 90-36.87 degrees +15 degrees is 68.13 degrees, the allowable range of the deviation of the opening degree of the side guide plate after being clamped in place and the length of the steel plate before steel turning is +/-100 mm, and when the deviation beta '-beta between the actual angle beta' and the beta is beta, the allowable range of the deviation is +/-100 mmλWhen the angle is less than 0 DEG, two groups of opposite steel rotating roller ways respectively run at the speed of +2m/s and-2 m/s, and when the angle is beta' -betaλAnd when the angle is more than or equal to 0 degree, stopping two groups of opposite steel rotating roller ways, starting the clamping of the side guide plates, and after the side guide plates are clamped in place, if the opening degree of the side guide plates is-4000 mm and the steel rotating is less than or equal to 100mm, determining that the steel rotating is finished.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A control method for automatic steel rotation of a wide and thick plate rolling line is characterized by comprising the following steps:
s1: the steel plate is rotated anticlockwise on the inlet side of the rolling mill, and the steel plate is rotated clockwise on the outlet side of the rolling mill;
s2: calculating a target angle beta of steel rotation;
calculating an included angle alpha between a diagonal line of the steel plate and a side of the steel plate in the length direction according to the length L and the width W of the steel plate, and setting a target angle beta to be 90-alpha + delta, wherein the target angle of the inlet side-turning steel is as follows: beta is aIntoThe target angle of the outlet side-turn steel is 90 ° - α ° + Δ: beta is aGo out＝-(90°- α ° + Δ); wherein Δ is an angle margin;
s3: adopting machine vision tracking to identify the included angle beta 'between the edge of the side guide plate at the transmission side and the edge of the steel plate which is next to the side guide plate before the steel is rotated when the steel is rotated at the inlet side, wherein the included angle beta' is betaIntoLess than 0 degree or outlet side-rotating steel, beta' -betaGo outWhen the angle is more than 0 degree, the two groups of opposite steel rotating roller ways rotate at high speed at opposite speed; when the inlet is turned sideways, beta' -betaIntoNot less than 0 degree or outlet side-turning steel, beta' -betaGo outWhen the temperature is less than or equal to 0 ℃, stopping the steel rotating roller way and starting the side guide plates for clamping; when the steel plate is detected to be partially moved out of the side guide plate or the steel rotating speed is output but the steel rotating angle is unchanged in the steel rotating process, stopping steel rotating, and giving an alarm;
s4: and detecting the deviation between the opening of the side guide plate and the length of the steel plate before steel turning when the side guide plate is clamped in place, considering that the steel turning is finished when the deviation is within an allowable range, continuing the subsequent rolling, and otherwise, alarming.
2. The method for controlling automatic steel rotation of a wide and thick plate rolling line according to claim 1, wherein the angular allowance Δ in S2 is in the range of 13 ° to α °.
3. The control method for automatic steel rotation of wide and thick plate rolling line according to claim 1, wherein the speed of high-speed rotation of the steel rotation roller table in S3 is 2-2.5 m/S.
4. The control method for automatic steel rotation in a wide and thick plate rolling line according to claim 1, wherein the allowable deviation range in S4 is ± 100 mm.
5. The method for controlling automatic steel turning in a wide and thick plate rolling line according to claim 1, wherein the deviation between the opening of the side guide and the length of the steel plate before turning in S4 is the opening of the side guide 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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| 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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| CN114247757A true CN114247757A (en) | 2022-03-29 |
| CN114247757B CN114247757B (en) | 2023-10-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446125A (en) * | 2022-08-16 | 2022-12-09 | 北京科技大学 | Automatic steel rotating control method for medium plate based on machine vision |
Citations (9)
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|---|---|---|---|---|
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| JP2007130672A (en) * | 2005-11-11 | 2007-05-31 | Jfe Steel Kk | Slab rolling method |
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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 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446125A (en) * | 2022-08-16 | 2022-12-09 | 北京科技大学 | Automatic steel rotating control method for medium plate based on machine vision |
| 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 |
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| Publication number | Publication date |
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| CN114247757B (en) | 2023-10-27 |
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