CN103447307A - Protection method for pressing head of rolling mill - Google Patents
Protection method for pressing head of rolling mill Download PDFInfo
- Publication number
- CN103447307A CN103447307A CN201310402716XA CN201310402716A CN103447307A CN 103447307 A CN103447307 A CN 103447307A CN 201310402716X A CN201310402716X A CN 201310402716XA CN 201310402716 A CN201310402716 A CN 201310402716A CN 103447307 A CN103447307 A CN 103447307A
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- rolling mill
- steel plate
- roll
- milling train
- pressing head
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Abstract
The invention provides a protection method for a pressing head of a rolling mill. The protection method comprises the following steps: arranging position detection limit switches at entrance and exit positions on an operating side and a transmission side of a roughing mill respectively; adjusting a rolling mill process and an automatic sequence control program of a driving automatic system; reducing rise speed of EGC (Electro mechanical Gap Control) when a swing roll gap of a motor is held down; improving the set pressure for balance of a supporting roll; increasing the response speed during rise; triggering a quick stop signal by a TDC (Simatic Technology and Drive Control) system of the rolling mill once the pressing head is separated from the supporting roll, and forbidding engagement of a steel plate; meanwhile, increasing a quick stop signal in a rolling mill WINCC operating picture and displaying alarm information. The protection method is simple and practical; the problem that the pressing head is impacted by an upper supporting roll bearing box when the roll gap is lifted after steel plate throw and the steel plate is engaged with the rolling mill after each steel plate is milled during normal production can be effectively solved; the damage and production stop accidents of a hold-down system and the pressing head are avoided; the stop time is reduced; the spare part cost and the production cost are reduced; the equipment productivity is improved.
Description
Technical field
The invention belongs to automation field, particularly a kind of guard method for the down-pressing system of rolling mill pressure head.
Background technology
The stable operation of down-pressing system of rolling mill and backup roll's balancing system is the normal precondition of producing of milling train.Present case is: milling train detects the pressure of backing roll balance by pressure sensor, once pressure does not reach setting value, just thinks that the pressure head of milling train separates with press down system, gap occurs.Milling train TDC(SIMATIC Technology and Drive Control) established technology and driving automated system control program will trigger and stop soon signal, avoid pressure head to damage.But, in the actual production practice, also there is another kind of situation, in lifting the process of roll gap, although pressure has reached setting value, the speed that backing roll promotes is slower than the speed of depressing rising, still produces gap between backing roll and pressure head, now the situation that the top backing up roll bearing housing clashes into pressure head will occur, the press down system of damage milling train in the steel plate milling train of nipping.If gap is larger, will directly cause the damage of pressure head, leading screw, screw, need to be changed for a long time, not only consume high spare part expense, and directly affect the normal production of automation rolling system and the operating rate of equipment.
Summary of the invention
The present invention aims to provide a kind of problem that can effectively solve the top backing up roll bearing housing shock pressure head occurred when the normal productive process light plate is nipped milling train, thereby reduces downtime, improves the rolling mill press head guard method of equipment capacity.
For this reason, the solution that the present invention takes is:
A kind of rolling mill press head guard method is characterized in that:
1, enter at roughing mill fore side and transmission side pressure head respectively, export a position probing limit switch is set, be used for detecting the situation that contacts of pressure head and top backing up roll bearing housing, four limit switches are that TDC is connected with rolling mill technology with driving automation control system respectively, once pressure head separates with backing roll, rolling mill technology and drive automation control system to trigger to stop soon signal, forbid that steel plate nips.
2, milling train TDC control system automatic sequence control program is adjusted, increase corresponding signal processing module in milling train TDC control program, process four limit switch signals, if any one limit switch dropout is arranged, will trigger at once and stop soon signal; At every block plate, roll, steel plate is while lifting roll gap after dishing out, the rate of climb of Electro-pressing EGC drops to 20mm/s from 30mm/s, the setting pressure of backing roll balance is brought up to 260bar from 240bar, thereby the response speed while accelerating the rising of backing roll balance, make it be greater than 20mm/s, in order to better follow Electro-pressing.
3, increase and stop soon signal in milling train WINCC operation screen, will stop soon signal chains and receive in milling train TDC control program, display alarm information.
In roughing mill fore side pressure head entrance, the outlet of roughing mill fore side pressure head, roughing mill transmission side pressure head entrance, the outlet of roughing mill transmission side pressure head, one position probing limit switch is set respectively, be used for detecting the situation that contacts of pressure head and backing roll, four limit switches are connected with milling train TDC control system respectively, once pressure head separates with backing roll, milling train TDC control system triggers stops signal soon, forbids that steel plate nips.
Beneficial effect of the present invention is:
The present invention takes full advantage of on-the-spot having ready conditions; by setting up position probing limit switch and control program; solved the problem of the top backing up roll bearing housing shock pressure head occurred when the normal productive process light plate is nipped milling train; avoid damage and the stopping production accident of press down system; reduce downtime; reduce spare part expense and production cost, improve equipment capacity.The present invention is simple, and system is safe and reliable to operation.
The specific embodiment
The concrete scheme of rolling mill press head guard method of the present invention is:
1, in roughing mill fore side pressure head entrance, the outlet of roughing mill fore side pressure head, roughing mill transmission side pressure head entrance, the outlet of roughing mill transmission side pressure head, one position probing limit switch is set respectively, be used for detecting the situation that contacts of pressure head and backing roll, four limit switch signals access milling train TDC control system by cable, once pressure head separates with backing roll, milling train TDC control system triggers stops signal soon, forbid that steel plate nips, to prevent the damage of down-pressing system of rolling mill and rolling mill press head.
2, milling train TDC control system automatic sequence control program is adjusted, increase corresponding signal processing module in milling train TDC control program, process four limit switch signals, if any one limit switch dropout is arranged, will trigger at once and stop soon signal; At every block plate, roll, steel plate is while lifting roll gap after dishing out, the rate of climb of Electro-pressing EGC drops to 20mm/s from 30mm/s, the setting pressure of backing roll balance is brought up to 260bar from 240bar, thereby the response speed while accelerating the rising of backing roll balance, make it be greater than 20mm/s, in order to better follow Electro-pressing, the response speed while rising with quickening, the servo performance of raising system.
3, increase and stop soon signal in milling train WINCC operation screen, will stop soon signal chains and receive in milling train TDC control program, display alarm information, so that the prompting related personnel takes measures to solve in time.
Claims (1)
1. a rolling mill press head guard method is characterized in that:
(1), enter at roughing mill fore side and transmission side pressure head respectively, export a position probing limit switch is set, be used for detecting the situation that contacts of pressure head and top backing up roll bearing housing, four limit switches are that TDC is connected with rolling mill technology with driving automation control system respectively, once pressure head separates with backing roll, rolling mill technology and drive automation control system to trigger to stop soon signal, forbid that steel plate nips;
(2), milling train TDC control system automatic sequence control program is adjusted, increase corresponding signal processing module in milling train TDC control program, process four limit switch signals, if any one limit switch dropout is arranged, will trigger at once and stop soon signal; At every block plate, roll, steel plate is while lifting roll gap after dishing out, the rate of climb of Electro-pressing EGC drops to 20mm/s from 30mm/s, the setting pressure of backing roll balance is brought up to 260bar from 240bar, thereby the response speed while accelerating the rising of backing roll balance, make it be greater than 20mm/s, in order to better follow Electro-pressing;
(3), increase in milling train WINCC operation screen and stop soon signal, will stop soon signal chains and receive in milling train TDC control program, display alarm information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310402716.XA CN103447307B (en) | 2013-09-07 | 2013-09-07 | A kind of rolling mill press head protection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310402716.XA CN103447307B (en) | 2013-09-07 | 2013-09-07 | A kind of rolling mill press head protection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103447307A true CN103447307A (en) | 2013-12-18 |
| CN103447307B CN103447307B (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310402716.XA Active CN103447307B (en) | 2013-09-07 | 2013-09-07 | A kind of rolling mill press head protection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525088A (en) * | 2015-12-21 | 2016-04-27 | 北京首钢自动化信息技术有限公司 | Method for automatically unloading continuous annealing production line |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5142891A (en) * | 1989-12-25 | 1992-09-01 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Thickness control system for rolling mill |
| CN1958183A (en) * | 2006-10-16 | 2007-05-09 | 马鞍山钢铁股份有限公司 | Control method for zero adjusting rollers in universal type rolling mill |
| CN102101127A (en) * | 2009-12-17 | 2011-06-22 | 天津荣程联合钢铁集团有限公司 | Safety protection device of rolling mill press head |
| CN102581037A (en) * | 2011-01-12 | 2012-07-18 | 宝山钢铁股份有限公司 | Method for adjusting zero position of two sides of hot continuous rolling mill |
| CN102847727A (en) * | 2012-08-27 | 2013-01-02 | 天津天重中直科技工程有限公司 | Pressure detection device of four-high mill |
| CN103084406A (en) * | 2013-03-06 | 2013-05-08 | 重庆钢铁(集团)有限责任公司 | Four-roll reversible type rolling mill pressure head installing structure |
-
2013
- 2013-09-07 CN CN201310402716.XA patent/CN103447307B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5142891A (en) * | 1989-12-25 | 1992-09-01 | Ishikawajima-Harima Jukogyo Kabushiki Kaisha | Thickness control system for rolling mill |
| CN1958183A (en) * | 2006-10-16 | 2007-05-09 | 马鞍山钢铁股份有限公司 | Control method for zero adjusting rollers in universal type rolling mill |
| CN102101127A (en) * | 2009-12-17 | 2011-06-22 | 天津荣程联合钢铁集团有限公司 | Safety protection device of rolling mill press head |
| CN102581037A (en) * | 2011-01-12 | 2012-07-18 | 宝山钢铁股份有限公司 | Method for adjusting zero position of two sides of hot continuous rolling mill |
| CN102847727A (en) * | 2012-08-27 | 2013-01-02 | 天津天重中直科技工程有限公司 | Pressure detection device of four-high mill |
| CN103084406A (en) * | 2013-03-06 | 2013-05-08 | 重庆钢铁(集团)有限责任公司 | Four-roll reversible type rolling mill pressure head installing structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105525088A (en) * | 2015-12-21 | 2016-04-27 | 北京首钢自动化信息技术有限公司 | Method for automatically unloading continuous annealing production line |
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| CN103447307B (en) | 2016-06-01 |
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