CN111036690A - Method for controlling deflection of rough rolling intermediate billet - Google Patents
Method for controlling deflection of rough rolling intermediate billet Download PDFInfo
- Publication number
- CN111036690A CN111036690A CN201911114516.8A CN201911114516A CN111036690A CN 111036690 A CN111036690 A CN 111036690A CN 201911114516 A CN201911114516 A CN 201911114516A CN 111036690 A CN111036690 A CN 111036690A
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- China
- Prior art keywords
- pass
- deviation adjusting
- blank
- controlling
- rough rolling
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- 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
- B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention provides a method for controlling deflection of a rough rolling intermediate billet, and belongs to the technical field of automatic control of metallurgy. According to the method, according to the head condition of a blank rolled by the current pass, an AGC single-action knob is adjusted or inclination control parameters are modified, the shape of the next pass of the steel or the current pass of the next steel is controlled, different deviation adjusting control quantities are adopted by different passes, the deviation adjusting control quantity of each pass is memorized and stored respectively, the deviation adjusting quantity used by each pass at present and the deviation adjusting quantity of each pass are checked on a human-computer interaction interface, and the used deviation adjusting quantity is modified along with the adjustment of the AGC single-action knob in the rolling process. According to the method, the AGC regulating quantity of the next pass of the block of steel or the current pass of the next block of steel is adjusted according to the head condition of the blank rolled by the current pass, so that the blank rolled by the next pass of the block of blank or the current pass of the next block of blank is not deviated, the rolled intermediate blank is not deviated, and the deviation controllability of the rough-rolled intermediate blank is improved.
Description
Technical Field
The invention relates to the technical field of metallurgy automatic control, in particular to a method for controlling deflection of a rough rolling intermediate billet.
Background
The deviation of a rough-rolled intermediate billet is always a problem in hot continuous rolling production, the influence of light deviation of the intermediate billet on the production instability of subsequent production procedures can be caused, the accident can be caused by the collision of the intermediate billet on a side guide plate at the inlet of a flying shear or a hot coil box by heavy deviation of the intermediate billet, and the problem to be solved in the hot continuous rolling production is how to effectively control the rough-rolled intermediate billet not to deviate.
Disclosure of Invention
The invention aims to provide a method for controlling deflection of a rough rolling intermediate billet.
According to the method, according to the head condition of a blank rolled by the current pass, an AGC single-action knob is adjusted or inclination control parameters are modified, the shape of the next pass of the steel or the current pass of the next steel is controlled, different deviation adjusting control quantities are adopted by different passes, the deviation adjusting control quantity of each pass is memorized and stored respectively, the deviation adjusting control quantity used by each pass at present and the deviation adjusting control quantity of each pass are checked on a human-computer interaction interface, and the deviation adjusting control quantity used is modified along with the adjustment of the AGC single-action knob in the rolling process.
And adjusting the AGC single-action knob, wherein pulse adjustment is performed during adjustment, the roll gap deviation change Nmm on two sides at one time is adjusted, and the value range of N is 0.05-0.1.
The offset control quantity of each pass is not cleared after zero adjustment is carried out again, and manual operation can be carried out if zero adjustment is needed.
The range of the deviation adjustment control amount used in each pass is limited to-1.0 mm, and can also be determined according to the condition of field equipment.
The technical scheme of the invention has the following beneficial effects:
in the scheme, the AGC adjustment quantity of the next pass of the next piece of steel or the current pass of the next piece of steel is adjusted, so that the blank rolled by the next pass of the next piece of blank or the current pass of the next piece of blank is not deviated, the rolled intermediate blank is not deviated, and the deviation controllability of the rough-rolled intermediate blank is improved.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description is given with reference to specific embodiments.
The invention provides a method for controlling deflection of a rough rolling intermediate billet.
According to the method, according to the head condition of a blank rolled by the current pass, an AGC single-action knob is adjusted or inclination control parameters are modified, the shape of the next pass of the steel or the current pass of the next steel is controlled, different deviation adjusting control quantities are adopted by different passes, the deviation adjusting control quantity of each pass is memorized and stored respectively, the deviation adjusting control quantity used by each pass at present and the deviation adjusting control quantity of each pass are checked on a human-computer interaction interface, and the deviation adjusting control quantity used is modified along with the adjustment of the AGC single-action knob in the rolling process.
The following description is given with reference to specific examples.
In the specific application, AGC offset adjustment amount of each pass is directly set on a human-computer interaction interface, after the offset adjustment amount is set, the actually used offset adjustment amount is changed along with the adjustment of an AGC single-action knob in the rolling process on the basis of the set offset adjustment amount, the next blank is executed according to the value of the adjusted blank, the actually used offset adjustment amount is continuously maintained after zero adjustment, if the offset adjustment amount of each pass is required to be cleared, the offset adjustment amount of each pass can be changed to 0 in the column of the manually set value, and the offset adjustment amount of all the passes is cleared by clicking a modification button.
The used, set and executed values of each-pass AGC offset are shown in Table 1.
TABLE 1
The method is successfully applied to the deviation control of rough rolling intermediate billets of a plurality of hot rolling plants and is favored by users.
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 method for controlling deflection of a rough rolling intermediate billet is characterized by comprising the following steps: according to the situation of the head of the blank rolled by the current pass, adjusting an AGC single-action knob or modifying inclination control parameters, controlling the plate shape of the next pass of the steel or the current pass of the next steel, adopting different deviation adjusting control quantities for different passes, respectively memorizing and storing the deviation adjusting control quantity of each pass, checking the deviation adjusting control quantity used by each pass and directly setting the deviation adjusting control quantity of each pass on a human-computer interaction interface, and modifying the used deviation adjusting control quantity along with the adjustment of the AGC single-action knob in the rolling process.
2. The method for controlling the deflection of the rough rolling intermediate billet as claimed in claim 1, wherein: and the AGC single-action knob is adjusted by pulse, and the roll gap deviation change Nmm on two sides is adjusted once.
3. The method for controlling the deflection of the rough rolling intermediate billet as claimed in claim 1, wherein: and the offset control quantity of each pass is not cleared after zero adjustment is carried out again, and if zero adjustment is needed, the offset control quantity needs to be manually modified to be zero.
4. The method for controlling the deflection of the rough rolling intermediate billet as claimed in claim 1, wherein: the limit range of the offset control amount used in each pass is-1.0 mm.
5. The method for controlling the deflection of the rough rolling intermediate billet as claimed in claim 2, wherein: the value range of N is 0.05-0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114516.8A CN111036690A (en) | 2019-11-14 | 2019-11-14 | Method for controlling deflection of rough rolling intermediate billet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911114516.8A CN111036690A (en) | 2019-11-14 | 2019-11-14 | Method for controlling deflection of rough rolling intermediate billet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111036690A true CN111036690A (en) | 2020-04-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911114516.8A Pending CN111036690A (en) | 2019-11-14 | 2019-11-14 | Method for controlling deflection of rough rolling intermediate billet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111036690A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112872043A (en) * | 2021-01-08 | 2021-06-01 | 北京科技大学设计研究院有限公司 | Control method for preventing head of rolled piece from deviating in hot rolling process of single stand |
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| JP4878340B2 (en) * | 2007-08-20 | 2012-02-15 | 株式会社神戸製鋼所 | Method for preventing meandering of metal sheet |
| CN104275352A (en) * | 2014-09-22 | 2015-01-14 | 宁波宝新不锈钢有限公司 | Cold stripe mill deviation and shape automatic control method |
| CN105234189A (en) * | 2015-11-13 | 2016-01-13 | 北京首钢自动化信息技术有限公司 | Slab sickle bending control system and method used for roughing mill |
| CN106475424A (en) * | 2015-08-25 | 2017-03-08 | 宝山钢铁股份有限公司 | A kind of control method of Hot Rolling Strip sideslip |
| CN106984652A (en) * | 2016-01-21 | 2017-07-28 | 宝山钢铁股份有限公司 | The method that finishing stand sideslip is controlled according to breakdown bar camber |
| CN108941208A (en) * | 2017-05-24 | 2018-12-07 | 宝山钢铁股份有限公司 | A kind of roughing width control method of slab |
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2019
- 2019-11-14 CN CN201911114516.8A patent/CN111036690A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4878340B2 (en) * | 2007-08-20 | 2012-02-15 | 株式会社神戸製鋼所 | Method for preventing meandering of metal sheet |
| CN104275352A (en) * | 2014-09-22 | 2015-01-14 | 宁波宝新不锈钢有限公司 | Cold stripe mill deviation and shape automatic control method |
| CN106475424A (en) * | 2015-08-25 | 2017-03-08 | 宝山钢铁股份有限公司 | A kind of control method of Hot Rolling Strip sideslip |
| CN105234189A (en) * | 2015-11-13 | 2016-01-13 | 北京首钢自动化信息技术有限公司 | Slab sickle bending control system and method used for roughing mill |
| CN106984652A (en) * | 2016-01-21 | 2017-07-28 | 宝山钢铁股份有限公司 | The method that finishing stand sideslip is controlled according to breakdown bar camber |
| CN108941208A (en) * | 2017-05-24 | 2018-12-07 | 宝山钢铁股份有限公司 | A kind of roughing width control method of slab |
Non-Patent Citations (1)
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| 赵宇等: "热轧带钢头部跑偏轧破原因分析及对策", 《北方钒钛》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112872043A (en) * | 2021-01-08 | 2021-06-01 | 北京科技大学设计研究院有限公司 | Control method for preventing head of rolled piece from deviating in hot rolling process of single stand |
| CN112872043B (en) * | 2021-01-08 | 2022-04-22 | 北京科技大学设计研究院有限公司 | Control method for preventing head of rolled piece from deviating in hot rolling process of single stand |
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Application publication date: 20200421 |