CN101670369B - Full-automatic fast roll changing method for hot rolling mill - Google Patents
Full-automatic fast roll changing method for hot rolling mill Download PDFInfo
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- CN101670369B CN101670369B CN 200910093493 CN200910093493A CN101670369B CN 101670369 B CN101670369 B CN 101670369B CN 200910093493 CN200910093493 CN 200910093493 CN 200910093493 A CN200910093493 A CN 200910093493A CN 101670369 B CN101670369 B CN 101670369B
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 238000005098 hot rolling Methods 0.000 title claims abstract description 14
- 238000005096 rolling process Methods 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 238000003801 milling Methods 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- 230000001131 transforming effect Effects 0.000 description 2
- 206010036872 Prolonged labour Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000033764 rhythmic process Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The invention relates to a full-automatic fast roll changing method for a hot rolling mill on a hot-rolling sheet production line, wherein the hardware thereof comprises a full hydraulic roll changing device, an SIMENS TDC controller, a local operation panel and a WinCC server. The control method successively comprises: preparing roll changing, drawing out a worn work roll, changing a ladder mat and removing a horizontal-moving platform to align a new roll with a rolling mill, assembling the new work roll and preparing steel rolling, wherein a stayguy encoder as the ratio control of position feedback is used in the position control manner of a work roll push-and-pull cylinder, thereby ensuring changing work roll with fastest speed and high precision. Simultaneously, a more reasonable control order is used for carrying out full-automatic roll changing safely and efficiently.
Description
Technical field
The present invention relates to the full-automatic method of changing precision rolling working roll fast of a kind of SPHC production line.
Background technology
Hot rolling be a kind of to hot wide plate base by being rolled into the production technology of coil of strip after rolling.In the hot rolling production process, need to change precision rolling working roll once about rolling usually 90 band steel.Therefore changing precision rolling working roll is indispensable link in the hot rolling line production process.Along with improving constantly of hot continuous rolling automaticity, rolling rhythm is accelerated gradually, and the precision rolling working roll replacement cycle is more frequent, and needs were changed about 2 times in general per 8 hours.This shows that the speed of finish rolling replacing working roll directly determines the output and the cost of hot rolling line.Therefore, improve the roll change automaticity, reasonably optimizing roll change step, shortening roll changing time is the key point that improves production output and reduce production costs.
Below enumerating at present more domestic and international hot-rolling finishing mill work roll changing systems respectively illustrates:
Manually roll change: the precision rolling working roll roll change minority of hot rolling adopts manual roller replacing mode, and is bigger as the long labour intensity of the use manual roller replacing mode roll changing time of rotating disc type, and is easier to cause security incident, is not desirable roll-changing method.
Semi-automatic, automatic roll change: present modern hot rolling mill widespread advanced person's control system realizes automatic sequence control, but because problems such as detecting element, plant equipment usually cause automatic roll change not implement in actual production, the orientation problem of the working roll push-and-pull cylinder in the especially roll change process is the difficult problem in automatic roll change process.
For example, use certain hot rolling mill of automatic roll change to adopt the automatic roller replacing mode of roll change buggy.7 mill roll times though manually roll changing time shortens greatly, have also been saved manpower about 30 minutes,, present automatic roll change technology is immature, and usually appearance can not be finished automatically and change into the manual mode roll change, has increased roll changing time more.
Summary of the invention
The objective of the invention is deficiency,, provide a kind of and be controlled to be main working roll fast roll changing method with working roll push-and-pull cylinder position transforming the roll-changing equipment detection means and optimizing on the basis of work roll changing flow process at existence in the all-hydraulic roll changing system control.
A kind of method of changing working roll in hot rolling is produced fast is characterized in: roll-changing method by pre-roll change, draw old working roll, change step pad and move traversing platform new roller is aimed at milling train, adorned four steps of new working roll and form.
In the pre-roll change process of the first step, in the normal operation of rolling operator scheme is switched to pre-roll change pattern and press automatic start button, pre-roll change begins.To dig the upset cylinder after pre-roll change begins automatically and working roll push-and-pull cylinder will be pushed into holding fix, in this process, not influence rolling normally.After last root belt steel rolling finishes, after the rolling end of this frame just, automatically kink is raised to the roll change position, roll shifting is scurried to pre-roll change position simultaneously.If roughing this moment begins rolling kink and roll shifting will come back to the preparation rolling position automatically at this.If no longer be rolled completely, pre-roll change program is finished.
Second step, drawing the old working roll stage, do not have the chain equipment of machinery in the auxiliary body and move simultaneously, subsequent working roller push-and-pull cylinder is to the E9 position, so, can improve withdrawing roll speed greatly.
The 3rd step, change step pad and moving traversing platform phase, do not have the chain equipment of machinery in the auxiliary body and move simultaneously, finish simultaneously.
The 4th step, adorning the new roller stage, do not have the chain equipment of machinery in the auxiliary body and move simultaneously, finish simultaneously.
Further, after entering pre-roll change program, do not proceed rolling shedule as not carrying out the roll change program, the cylinder that then overturns, working roll push-and-pull cylinder remain on prepares the continuation wait of roll change position.Roll shifting and milling train kink all set back continue rolling.
Further, after entering pre-roll change program,, carry out the pendulum position, roll change position of kink and roll shifting behind this milling train of finish rolling throwing steel automatically, utilize the time to greatest extent when steel is not with in roughing.
Further, in the control procedure of each step, add to confirm by function, promptly when equipment working properly but under the abnormal situation of detection signal, by continuing next step by ACK button after the site inspection; Prevent to cause the generation of the situation that automatic roll change can not continue because of equipment fault.
Further, when using the backguy position sensor that the position of working roll push-and-pull cylinder is accurately detected, utilize the positioner of dynamic parameter that the push-and-pull cylinder position is carried out accurate position control, avoid losing or locating the inaccurate automatic roll change that can not continue to realize because of the push-and-pull cylinder position.
Description of drawings
Fig. 1 is a program function block diagram of the present invention.
Fig. 2 prepares the sequence control program FB(flow block) for roll change of the present invention.
Fig. 3 draws the simple block diagram of old working roll sequence control program among Fig. 2.
Fig. 4 adorns the simple block diagram of new working roll sequence control program among Fig. 2.
Fig. 5 is the automatic control flow chart figure of the automatic roll change control system of the present invention.
Fig. 6 relates to each ad-hoc location schematic diagram for roll change among the present invention.
The specific embodiment
Disclosed fast roll changing method among the present invention, its hardware is made of all-hydraulic roll-changing equipment, Siemens TDC controller, local operation panel and WinCC server.Its control method is followed successively by: roll change prepares, takes out old working roll, change step pad and move traversing platform with new roller aim at milling train, adorn new working roll, steel rolling prepares.The present invention transforms several steps wherein, describes in detail below in conjunction with accompanying drawing.
At first the original position probing mode of working roll push-and-pull cylinder is transformed, transform as the backguy encoder near switch original.By the position data of using the backguy encoder to return working roll push-and-pull cylinder is implemented high precision position control.
According to the SFC programming mode of Fig. 1 to the use shown in Figure 5 Siemens PCS7 programing system, carry out programming according to Fig. 1 to FB(flow block) and functional block diagram shown in Figure 5, make system have better fault-tolerance.By in the HMI picture, adding ACK button and confirming that picture makes the further affirmation that need whether determine when confirming to operate, prevent maloperation.ACK button is linked to each other with all conditions of sequential control, but should guarantee that each affirmation only carries out a step.
Do not re-use sequential control according to the control mode of the special pre-roll change function shown in Fig. 1 and be to use logic to judge, when all conditions satisfy, just activate pre-roll change function.Concrete logic is that each milling train will not start special pre-roll change function successively after roughing has steel and intact last piece band steel of each mill milling of finish rolling.Pre-roll change function is that roll shifting is scurried to the relevant position by fore side, simultaneously this milling train kink is raised up to the roll change position automatically.
Fast roll changing method among the present invention comprises four steps, pre-roll change, draws old working roll, changes step pad and move traversing platform new roller is aimed at milling train, adorned new working roll.
As Fig. 1, Fig. 2 and shown in Figure 5, reach predetermined service time at roll, when needing roll change, rolling control system switches to pre-roll change program, under the control of pre-roll change program, use the backguy encoder that the firm initial position of each working roll push-and-pull among the F1-F7 is detected, and data are returned control system.Pre-roll change procedure auto-control upset cylinder is routed up after pressing automatic start button under the pre-roll change pattern, and working roll push-and-pull cylinder is pushed into the E8 holding fix.The steel billet order pass through the F1-F7 rolling mill roll after, along with steel billet successively by each milling train, with scurrying to by the fore side position of the roll shifting order of each milling train; Simultaneously, each milling train kink lifts automatically.Pre-roll change program is finished, and just is not with steel when roughing, and this milling train of finish rolling is thrown the pendulum position, roll change position of carrying out kink and roll shifting automatically behind the steel, utilizes the time to greatest extent.
E1 is that working roll push-and-pull cylinder is fully retracted to the position in the overturn cover among Fig. 6; Position of rest when E2 working roll push-and-pull cylinder draws old working roll; Decoupling device position when E3 working roll push-and-pull cylinder draws old working roll; E4-E5 uses the just high low speed switching position of high-speed mobile; Top working roll fell into the alignment pin position of bottom working roll when E6 working roll push-and-pull cylinder drew old working roll; Lift the top working roll position after when E7 working roll push-and-pull cylinder pushes away new working roll top working roll being installed to the position; Holding fix when E8 working roll push-and-pull cylinder is prepared roll change; Hook and decoupling device position when E9 draws old working roll and adorns new bottom working roll.
As shown in Figure 3, drawing the old working roll stage, not having the chain equipment of machinery in the auxiliary body moves simultaneously: integrate with oral-lateral guide plate, outlet side guide plate, inlet outlet Wiper blade, HGC opens fast and bottom working roll locking step such as is opened and moved simultaneously, subsequently, working roll push-and-pull cylinder arrives the E9 position, so, saved the off time between each step, improve withdrawing roll speed greatly.
As shown in Figure 4, adorn the new roller stage, entrance side guide plate, outlet side guide plate, inlet outlet Wiper blade action control can merged, making it under the situation of not destroying mechanical interlocking, finishing simultaneously, can improve roll change speed greatly.
In the present invention, after mill control system switches to pre-roll change program, and after the whole rolling end of band steel, generally speaking, roll shifting and milling train kink lift two steps and put in place, and can begin automatic roll change this moment from milling train unit F1-F7 frame.If the automatic roll change of inoperation, for example, this moment, heating furnace continued tapping.Then the said equipment will be got back to normal operation position from the movable pendulum position, do not hinder rolling normally, the time abundance of this moment pendulum position.In sequence control procedure, add simultaneously and confirm by function, promptly when equipment working properly but under the abnormal situation of detection signal, by continuing next step by ACK button after the site inspection.Prevent because little equipment fault causes automatic roll change not continue.The present invention is also to transforming the detection mode of the initial position of working roll push-and-pull cylinder in the prior art in the pre-roll change function, transform backguy encoder detection mode with original as near the switch detection mode, use the backguy encoder that the push-and-pull cylinder is carried out position probing.Be specially, working roll push-and-pull cylinder implemented high precision position control, avoid taking place because of losing the situation that automatic roll change Position Control can't be continued because of the position in the working roll push-and-pull cylinder position position fixing process by the position data of using the backguy encoder to return.
Technical scheme of the present invention, the control step preface of all changing process is optimized, under the situation of not destroying mechanical interlocking, increase the number of devices of action simultaneously, to reach the purpose of accelerating automatic roll change speed, and cancelled unnecessary in the past detection step, such as, to the little step of roll change influence, as the pass milling train cooling water step in pre-roll change step, cancelled in the present invention and checked the inspection step whether cooling water switch closes, it can be carried out together with other step 1, prevent because of waiting for unnecessary signal, and the influence that the course of work of automatic roll change is caused.
The invention has the beneficial effects as follows, reduce staff labor intensity, reduce roll changing time, improve equipment operation rate, reduce production costs.
Claims (7)
1. method of changing working roll in hot rolling is produced fast is characterized by: roll-changing method by pre-roll change, change step pad and move traversing platform new roller is aimed at milling train, draws old working roll, adorned new working roll four steps and form; In described pre-roll change process, use the backguy encoder that the initial position of each working roll push-and-pull cylinder of milling train unit is detected, and data are returned control system; Select to press automatic start button after the pre-roll change pattern, the control program cylinder that will overturn is automatically routed up, and working roll push-and-pull cylinder is pushed into holding fix; After finishing pre-roll change model selection, when roughing no longer is rolled and after the finish rolling milling train throws steel successively, the scurrying of the roll shifting of milling train order to position by fore side; Simultaneously, each milling train kink lifts automatically; If roughing this moment has begun new rolling again, the said equipment is that roll shifting, the kink of each frame will be rolled the pendulum position automatically; If roughing finish rolling all no longer is rolled, pre-roll change program is finished.
2. the method for quick replacing working roll according to claim 1, it is characterized by: drawing the old working roll stage, do not have the chain equipment of machinery in the auxiliary body and move simultaneously, subsequent working roller push-and-pull cylinder arrives hook and the decoupling device position when drawing old working roll and adorning new bottom working roll.
3. the method for quick replacing working roll according to claim 1 is characterized by: adorning the new roller stage, do not having the chain equipment of machinery in the auxiliary body and move simultaneously, finishing simultaneously.
4. the method for quick replacing working roll according to claim 1 is characterized by: after entering pre-roll change program, do not proceed rolling shedule as not carrying out the roll change program, then roll shifting and milling train kink all set back continue rolling.
5. the method for quick replacing working roll according to claim 1 is characterized by: after entering pre-roll change program, when steel is not with in roughing, carry out the pendulum position, roll change position of kink and roll shifting behind this milling train of finish rolling throwing steel automatically, utilize the time to greatest extent.
6. the method for quick replacing working roll according to claim 1, it is characterized in that: in the control procedure of each step, add and confirm to pass through function, promptly when equipment working properly but under the abnormal situation of detection signal, by continuing next step by ACK button after the site inspection; Prevent to cause the generation of the situation that automatic roll change can not continue because of equipment fault.
7. the method for quick replacing working roll according to claim 1, it is characterized in that: when using the backguy position sensor that the position of working roll push-and-pull cylinder is accurately detected, utilize the positioner of dynamic parameter that the push-and-pull cylinder position is carried out accurate position control, avoid losing or locating the inaccurate automatic roll change that can not continue to realize because of the push-and-pull cylinder position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093493 CN101670369B (en) | 2009-09-24 | 2009-09-24 | Full-automatic fast roll changing method for hot rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910093493 CN101670369B (en) | 2009-09-24 | 2009-09-24 | Full-automatic fast roll changing method for hot rolling mill |
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| Publication Number | Publication Date |
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| CN101670369A CN101670369A (en) | 2010-03-17 |
| CN101670369B true CN101670369B (en) | 2011-08-03 |
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| CN 200910093493 Expired - Fee Related CN101670369B (en) | 2009-09-24 | 2009-09-24 | Full-automatic fast roll changing method for hot rolling mill |
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Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101807075B (en) * | 2010-05-25 | 2012-03-21 | 武汉吉威科技发展有限公司 | Automatic control system of hot rolled strip steel leveling unit |
| CN102463263B (en) * | 2010-11-16 | 2013-12-25 | 宝山钢铁股份有限公司 | Method for automatically positioning main shaft during roller exchange of finishing mill |
| CN102467099A (en) * | 2010-11-18 | 2012-05-23 | 上海宝信软件股份有限公司 | Address tag generation method of TDC controller |
| CN107008754B (en) * | 2016-01-27 | 2018-08-03 | 鞍钢股份有限公司 | Rapid roller changing method for fault of step pad of roughing mill |
| CN105964700A (en) * | 2016-05-27 | 2016-09-28 | 天津重电气自动化有限公司 | Interrupt processing method for automatic roller changing control of hot continuous rolling rough rolling unit |
| CN106734238B (en) * | 2017-01-08 | 2018-08-03 | 北京首钢自动化信息技术有限公司 | A kind of control method for the automatic roll change of mm finishing mill unit |
| CN107282642A (en) * | 2017-06-21 | 2017-10-24 | 江阴兴澄特种钢铁有限公司 | Four-roller stove rolls up reversable mill automatic thickness control device Replacement procedure |
| CN107745011A (en) * | 2017-10-16 | 2018-03-02 | 河钢股份有限公司承德分公司 | Roll change control method, apparatus and system |
| CN108421829B (en) * | 2018-02-27 | 2019-07-19 | 首钢京唐钢铁联合有限责任公司 | Method for improving horizontal precision of lower supporting roller |
| CN108817095B (en) * | 2018-04-28 | 2019-10-29 | 首钢京唐钢铁联合有限责任公司 | Finishing mill roll changing method and control device |
| CN109954754B (en) * | 2019-04-29 | 2024-04-26 | 苏州市威迪特工业设备有限公司 | High precision finishing mill |
| CN111438192B (en) * | 2020-04-29 | 2022-03-18 | 首钢京唐钢铁联合有限责任公司 | Method for replacing working roll |
| CN113458147B (en) * | 2021-07-28 | 2023-03-14 | 重庆钢铁股份有限公司 | Semi-automatic roll changing control method and device |
| WO2024191399A2 (en) * | 2023-03-15 | 2024-09-19 | Koymen Taner | Automatic rolling roller change system in the rolling process |
| CN116833233A (en) * | 2023-06-25 | 2023-10-03 | 武汉钢铁有限公司 | A work roll replacement control method and system for 1580 hot continuous rolling finishing mill |
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| US4603459A (en) * | 1985-11-12 | 1986-08-05 | Buchanan James C | Rocker bushings for pivotal movement |
| CN2399126Y (en) * | 1999-07-22 | 2000-10-04 | 中国第二重型机械集团公司 | Fast roller replacing appts. |
| CN101433918A (en) * | 2008-12-15 | 2009-05-20 | 武汉钢铁(集团)公司 | Control method for full-automatically changing work roll of hot rolling finisher |
| CN101537429A (en) * | 2009-05-12 | 2009-09-23 | 唐山国丰钢铁有限公司 | Roll replacing method for rolling mill on hot rolling production line |
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2009
- 2009-09-24 CN CN 200910093493 patent/CN101670369B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4603459A (en) * | 1985-11-12 | 1986-08-05 | Buchanan James C | Rocker bushings for pivotal movement |
| CN2399126Y (en) * | 1999-07-22 | 2000-10-04 | 中国第二重型机械集团公司 | Fast roller replacing appts. |
| CN101433918A (en) * | 2008-12-15 | 2009-05-20 | 武汉钢铁(集团)公司 | Control method for full-automatically changing work roll of hot rolling finisher |
| CN101537429A (en) * | 2009-05-12 | 2009-09-23 | 唐山国丰钢铁有限公司 | Roll replacing method for rolling mill on hot rolling production line |
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