CN104438351A - Control method for hydraulic servo system for shifting rolls of intermediate rolls of double-rack rolling mill - Google Patents
Control method for hydraulic servo system for shifting rolls of intermediate rolls of double-rack rolling mill Download PDFInfo
- Publication number
- CN104438351A CN104438351A CN201410436094.7A CN201410436094A CN104438351A CN 104438351 A CN104438351 A CN 104438351A CN 201410436094 A CN201410436094 A CN 201410436094A CN 104438351 A CN104438351 A CN 104438351A
- Authority
- CN
- China
- Prior art keywords
- calender rolls
- intermediate calender
- string roller
- rolls
- roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
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
- B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
- B21B37/40—Control of flatness or profile during rolling of strip, sheets or plates using axial shifting of the rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
- B21B31/16—Adjusting or positioning rolls
- B21B31/18—Adjusting or positioning rolls by moving rolls axially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2269/00—Roll bending or shifting
- B21B2269/12—Axial shifting the rolls
- B21B2269/16—Intermediate rolls
Abstract
The invention belongs to the technical field of mechanical control, and discloses a control method for a hydraulic servo system for shifting rolls of intermediate rolls of a double-rack rolling mill. The control method is used for controlling a cold-rolled strip steel production process and includes the steps that the rolling mill is initially modulated, and the initial positions of the shifting rolls of the upper intermediate roll and the lower intermediate roll are set; the initial position of a drive oil cylinder for the upper intermediate roll and the lower intermediate roll is set; a hydraulic lock in the hydraulic servo system is driven, and servo system oil ways of the shifting rolls of the upper intermediate roll and the lower intermediate roll are communicated; a servo valve of the hydraulic servo system for the shifting rolls of the intermediate rolls is enabled; the actual positions of the shifting rolls of the upper intermediate roll and the lower intermediate roll are acquired by the hydraulic servo system; the position deviation of the shifting rolls of the upper intermediate roll and the lower intermediate roll is calculated through a controller of the hydraulic servo system; PI adjustment is executed according to the position deviation, the action of the drive oil cylinder is adjusted, and the positions of the shifting rolls of the upper intermediate roll and the lower intermediate roll are adjusted. The novel control method is provided, the problem of the position deviation, caused by leakage of the hydraulic lock of the hydraulic servo system, of the shifting rolls of the intermediate rolls is solved, and control accuracy is greatly improved.
Description
Technical field
The present invention relates to machine control techniques field, particularly a kind of two-stand mills intermediate calender rolls string roller servo-hydraulic control method.
Background technology
Two-stand mills is a kind of cold continuous rolling, and extensively with being used in cold rolling production environment, its product template exported is excellent.
But, in continuous flow procedure, because the position of intermediate calender rolls offsets, cause template to lose shape, have a strong impact on product quality, lack good all the time, permanently effective solution.The position skew of intermediate calender rolls mostly is the skew of intermediate calender rolls string roller position, and main cause is because leaking appears in the hydraulic lock in Hydrauservo System, causes the control of Hydrauservo System to be lost efficacy, normally cannot perform control action.Offset problem cannot be solved by changing merely hydraulic lock.
Summary of the invention
Technical problem to be solved by this invention is to provide one can accurately perform servo-hydraulic control action, possesses the control method of good self correction ability simultaneously.
For solving the problems of the technologies described above, the invention provides a kind of two-stand mills intermediate calender rolls string roller servo-hydraulic control method, for the control of process for producing cold rolled strip steel; It is characterized in that, comprising:
Milling train initial modulation, the initial position of the string roller of intermediate calender rolls and the string roller of lower intermediate calender rolls in setting;
The initial position of the driving oil cylinder of intermediate calender rolls and lower intermediate calender rolls in setting;
Drive the hydraulic lock in Hydrauservo System, the servo-drive system oil circuit of the string roller of intermediate calender rolls and the string roller of lower intermediate calender rolls in conducting;
The servo valve of enable intermediate calender rolls string roller Hydrauservo System, intermediate calender rolls and lower intermediate calender rolls action in driving;
Hydrauservo System obtains above intermediate calender rolls string roller and lower centre and rolls the physical location of string roller;
Calculate above intermediate calender rolls string roller and lower centre by the controller of Hydrauservo System and roll the position deviation of string roller;
Perform PI according to position deviation to regulate, adjustment drives cylinder action, and in adjustment, the position of string roller is rolled in intermediate calender rolls string roller and lower centre, contracted position deviation.
Further, the error of the initial position of the string roller of described upper intermediate calender rolls and the string roller of lower intermediate calender rolls is less than or equal to 1.5mm.
Further, the deviations of actual position of the driving oil cylinder of upper intermediate calender rolls and lower intermediate calender rolls is less than or equal to 0.5mm.
Further, Hydrauservo System obtains the physical location of upper intermediate calender rolls string roller and lower centre rolling string roller rolls the driving oil cylinder of string roller physical location acquisition by the upper intermediate calender rolls string roller of monitoring and lower centre;
Wherein, the position deviation of intermediate calender rolls string roller is the position deviation of the driving oil cylinder of upper intermediate calender rolls string roller; The position deviation that string roller is rolled in lower centre is the position deviation that the driving oil cylinder of string roller is rolled in lower centre.
Two-stand mills intermediate calender rolls string roller servo-hydraulic control method provided by the invention is different from existing control method, possesses smooth control action flow process, namely by directly controlling the initial position of the intermediate calender rolls of terminal and feed back correction to realize, the high accuracy of the position of intermediate calender rolls controls and the correction of efficient self-adaptative adjustment; By controlling the driving oil cylinder as direct action main body, the impact avoiding other device and equipments in servo-drive system makes control procedure directly efficient, greatly improves the control accuracy of intermediate calender rolls.
Detailed description of the invention
A kind of two-stand mills intermediate calender rolls string roller servo-hydraulic control method that the embodiment of the present invention provides, for the control of process for producing cold rolled strip steel; It is characterized in that, comprising:
Milling train initial modulation, the initial position of the string roller of intermediate calender rolls and the string roller of lower intermediate calender rolls in setting;
The initial position of the driving oil cylinder of intermediate calender rolls and lower intermediate calender rolls in setting;
Drive the hydraulic lock in Hydrauservo System, the servo-drive system oil circuit of the string roller of intermediate calender rolls and the string roller of lower intermediate calender rolls in conducting;
The servo valve of enable intermediate calender rolls string roller Hydrauservo System, intermediate calender rolls and lower intermediate calender rolls action in driving;
Hydrauservo System obtains above intermediate calender rolls string roller and lower centre and rolls the physical location of string roller;
Calculate above intermediate calender rolls string roller and lower centre by the controller of Hydrauservo System and roll the position deviation of string roller;
Perform PI according to position deviation to regulate, adjustment drives cylinder action, and in adjustment, the position of string roller is rolled in intermediate calender rolls string roller and lower centre, contracted position deviation.
Before production, according to actual needs, set the initial position of the string roller of intermediate calender rolls and drive the initial position of oil cylinder; For the position control in continuous flow procedure provides reference.
Drive hydraulic lock, make the oil circuit of Hydrauservo System unimpeded, make terminal action executive agent can obtain enough power.
When above-mentioned preparation completes, production procedure can be started; By enable servo valve, start continuous seepage.
The present embodiment is in continuous flow procedure, and the position skew of intermediate calender rolls string roller, proposes the control flow directly controlling and feed back correction targetedly.
First, obtain the intermediate calender rolls actual position information in continuous flow procedure, namely its in the vertical direction relative position; Respectively for upper intermediate calender rolls string roller and the Information Monitoring separately of lower intermediate calender rolls string roller, there is servo system controller record.
Servo-drive system is by the actual position information gathered and the positional information comparison preset, obtain the control signal of position deviation as PI feedback regulation, the driving oil cylinder direct action of control terminal, the position of adjustment intermediate calender rolls, with contracted position deviation until reach preset value.Control the driving oil cylinder of least significant end with the position error signal of intermediate calender rolls, control flow is efficiently direct; It also avoid the state of the intrinsic device and equipments such as hydraulic lock to the impact of control effects simultaneously.
In order to improve control accuracy, the error of the initial position of the string roller of upper intermediate calender rolls and the string roller of lower intermediate calender rolls is less than or equal to 1.5mm; The deviations of actual position of the driving oil cylinder of upper intermediate calender rolls and lower intermediate calender rolls is less than or equal to 0.5mm.Thus reduction system error, promote control accuracy, make servo-drive system be in stable state.
Hydrauservo System obtains the physical location of upper intermediate calender rolls string roller and lower centre rolling string roller rolls the driving oil cylinder of string roller physical location acquisition by the upper intermediate calender rolls string roller of monitoring and lower centre;
Wherein, the position deviation of intermediate calender rolls string roller is the position deviation of the driving oil cylinder of upper intermediate calender rolls string roller; The position deviation that string roller is rolled in lower centre is the position deviation that the driving oil cylinder of string roller is rolled in lower centre.
Using the driving oil cylinder of least significant end as the control object of side-play amount, greatly improve control efficiency and precision.
The two-stand mills intermediate calender rolls string roller servo-hydraulic control method that the embodiment of the present invention provides is different from existing control method, possesses smooth control action flow process, namely by directly controlling the initial position of the intermediate calender rolls of terminal and feed back correction to realize, the high accuracy of the position of intermediate calender rolls controls and the correction of efficient self-adaptative adjustment; By controlling the driving oil cylinder as direct action main body, the impact avoiding other device and equipments in servo-drive system makes control procedure directly efficient, greatly improves the control accuracy of intermediate calender rolls.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (4)
1. a two-stand mills intermediate calender rolls string roller servo-hydraulic control method, for the control of process for producing cold rolled strip steel; It is characterized in that, comprising:
Milling train initial modulation, the initial position of the string roller of intermediate calender rolls and the string roller of lower intermediate calender rolls in setting;
The initial position of the driving oil cylinder of intermediate calender rolls and lower intermediate calender rolls in setting;
Drive the hydraulic lock in Hydrauservo System, the servo-drive system oil circuit of the string roller of intermediate calender rolls and the string roller of lower intermediate calender rolls in conducting;
The servo valve of enable intermediate calender rolls string roller Hydrauservo System, intermediate calender rolls and lower intermediate calender rolls action in driving;
Hydrauservo System obtains above intermediate calender rolls string roller and lower centre and rolls the physical location of string roller;
Calculate above intermediate calender rolls string roller and lower centre by the controller of Hydrauservo System and roll the position deviation of string roller;
Perform PI according to position deviation to regulate, adjustment drives cylinder action, and in adjustment, the position of string roller is rolled in intermediate calender rolls string roller and lower centre, contracted position deviation.
2. two-stand mills intermediate calender rolls string roller servo-hydraulic control method as claimed in claim 1, it is characterized in that, the error of the initial position of the string roller of described upper intermediate calender rolls and the string roller of lower intermediate calender rolls is less than or equal to 1.5mm.
3. two-stand mills intermediate calender rolls string roller servo-hydraulic control method as claimed in claim 1, it is characterized in that, the deviations of actual position of the driving oil cylinder of upper intermediate calender rolls and lower intermediate calender rolls is less than or equal to 0.5mm.
4. two-stand mills intermediate calender rolls string roller servo-hydraulic control method as claimed in claim 1, is characterized in that: Hydrauservo System obtains the physical location of upper intermediate calender rolls string roller and lower centre rolling string roller rolls the driving oil cylinder of string roller physical location acquisition by the upper intermediate calender rolls string roller of monitoring and lower centre;
Wherein, the position deviation of intermediate calender rolls string roller is the position deviation of the driving oil cylinder of upper intermediate calender rolls string roller; The position deviation that string roller is rolled in lower centre is the position deviation that the driving oil cylinder of string roller is rolled in lower centre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436094.7A CN104438351A (en) | 2014-08-29 | 2014-08-29 | Control method for hydraulic servo system for shifting rolls of intermediate rolls of double-rack rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410436094.7A CN104438351A (en) | 2014-08-29 | 2014-08-29 | Control method for hydraulic servo system for shifting rolls of intermediate rolls of double-rack rolling mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104438351A true CN104438351A (en) | 2015-03-25 |
Family
ID=52885544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410436094.7A Pending CN104438351A (en) | 2014-08-29 | 2014-08-29 | Control method for hydraulic servo system for shifting rolls of intermediate rolls of double-rack rolling mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104438351A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436215A (en) * | 2015-12-08 | 2016-03-30 | 北京首钢冷轧薄板有限公司 | Method for detecting working position of CVC channeling roll connecting device |
| CN106623442A (en) * | 2016-12-22 | 2017-05-10 | 北京首钢股份有限公司 | Online automatic roller scurrying method of working roller of planisher and control device |
| CN109351782A (en) * | 2018-10-09 | 2019-02-19 | 首钢京唐钢铁联合有限责任公司 | A kind of control method of planisher automatic string roller |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10230312A (en) * | 1997-02-20 | 1998-09-02 | Kawasaki Steel Corp | Method for controlling shape of rolling mill |
| KR100435304B1 (en) * | 2001-02-05 | 2004-06-12 | 가부시끼가이샤 히다치 세이사꾸쇼 | Rolling method for strip rolling mill and strip rolling equipment |
| CN1974039A (en) * | 2005-11-30 | 2007-06-06 | 株式会社日立制作所 | Shape control device and method |
| CN103341500A (en) * | 2013-07-10 | 2013-10-09 | 鞍钢股份有限公司 | Hydraulic synchronous control method for channeling roller cylinders of intermediate roller of UC rolling mill |
-
2014
- 2014-08-29 CN CN201410436094.7A patent/CN104438351A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10230312A (en) * | 1997-02-20 | 1998-09-02 | Kawasaki Steel Corp | Method for controlling shape of rolling mill |
| KR100435304B1 (en) * | 2001-02-05 | 2004-06-12 | 가부시끼가이샤 히다치 세이사꾸쇼 | Rolling method for strip rolling mill and strip rolling equipment |
| CN1974039A (en) * | 2005-11-30 | 2007-06-06 | 株式会社日立制作所 | Shape control device and method |
| CN103341500A (en) * | 2013-07-10 | 2013-10-09 | 鞍钢股份有限公司 | Hydraulic synchronous control method for channeling roller cylinders of intermediate roller of UC rolling mill |
Non-Patent Citations (1)
| Title |
|---|
| 阳玉平等: "《宝钢五冷轧连退CVC中间辊窜动控制系统》", 《自动化仪表》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105436215A (en) * | 2015-12-08 | 2016-03-30 | 北京首钢冷轧薄板有限公司 | Method for detecting working position of CVC channeling roll connecting device |
| CN105436215B (en) * | 2015-12-08 | 2018-10-30 | 北京首钢冷轧薄板有限公司 | A kind of CVC roll shiftings attachment device operating position detection method |
| CN106623442A (en) * | 2016-12-22 | 2017-05-10 | 北京首钢股份有限公司 | Online automatic roller scurrying method of working roller of planisher and control device |
| CN106623442B (en) * | 2016-12-22 | 2018-11-02 | 北京首钢股份有限公司 | A kind of on-line automatic roller shifting method of planisher working roll and control device |
| CN109351782A (en) * | 2018-10-09 | 2019-02-19 | 首钢京唐钢铁联合有限责任公司 | A kind of control method of planisher automatic string roller |
| CN109351782B (en) * | 2018-10-09 | 2020-05-15 | 首钢京唐钢铁联合有限责任公司 | Control method for automatic roller stringing of temper mill |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102755996B (en) | Method for eliminating local abrasion of flat work rolls | |
| CN101975202B (en) | Control method of hydraulic cylinder synchronous control system | |
| CN104438351A (en) | Control method for hydraulic servo system for shifting rolls of intermediate rolls of double-rack rolling mill | |
| CN102896180B (en) | Control method of hot-rolling rolled side guide plate for improving hot-rolling roll shape quality | |
| CN104525575A (en) | Hot rolled strip steel coiler side guide deviation correction control method | |
| CN103203374B (en) | A kind of scaling method of hot-rolled coiler pinch roll | |
| CN110227726A (en) | A kind of finish rolling vertical rolls are sewn on line parallel movement control method | |
| CN103252352B (en) | Rolling mill fault sky establishes milling method | |
| CN105665451B (en) | Finishing mill scaling method | |
| CN103949114B (en) | A kind of high accuracy laminating machine manufacturing highly-breathable coated filter material | |
| CN110038907A (en) | A kind of method controlling planisher and the electrohydraulic servo system for controlling planisher | |
| CN103433276B (en) | Profile steel rolling production line and production method thereof | |
| CN104209344B (en) | Hot tandem rolling special steel dynamic self-adapting pressing control method | |
| CN101712045A (en) | Method for rolling H-shaped steel | |
| CN104324939A (en) | Rolling method of steel strip | |
| CN103341502B (en) | Steel board end intra-plate gauge deviation control method | |
| CN104209342A (en) | Additional given virtual sheathing control method of hot continuous rolling thin-specification movable sleeve | |
| CN103341504B (en) | Sendzimir rolling mill rolling-plate-shape control method | |
| CN203448392U (en) | Section steel rolling production line | |
| CN203556651U (en) | Rolling mill set | |
| CN203565471U (en) | Four-roller continuous rolling pipe mill | |
| CN203751171U (en) | Outlet guide device for horizontal straightener | |
| CN104550229B (en) | The conversion method of a kind of hot rolling 2250mm and 1580mm levelling machine technique initialization | |
| CN103510085B (en) | A kind of paint roller position control method reducing passivating solution and consume | |
| CN107716559B (en) | A kind of control method for preventing twin pressure roller entrance tension variation excessive |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150325 |