CN103736773A - Method for eliminating defect of crimping misalignment of galvanized finished product steel plates - Google Patents
Method for eliminating defect of crimping misalignment of galvanized finished product steel plates Download PDFInfo
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- CN103736773A CN103736773A CN201310714762.3A CN201310714762A CN103736773A CN 103736773 A CN103736773 A CN 103736773A CN 201310714762 A CN201310714762 A CN 201310714762A CN 103736773 A CN103736773 A CN 103736773A
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- crimping
- misalignment
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- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Abstract
The invention relates to a method for eliminating the defect of crimping misalignment of galvanized finished product steel plates. The method for eliminating the defect of crimping misalignment of galvanized finished product steel plates comprises the following steps: 1) in the process of recycling start of a rear part section, when the crimp tension dynamic error is less than 2%, an EPC deviation rectification system is put into an automatic deviation rectification mode; 2) a servo valve automatic gain parameter P is adjusted and optimized; a regulator of a servo valve feedback system is a proportional controller; the proportional gain P is a variable parameter, and is relevant to the speed X of a tail part machine set of a crimping machine, and the proportional gain parameter P is regulated; 3) the transition sensitivity of an optical probe of an EPC deviation rectification system is realized by a potentiometer for rectifying a KVK circuit board of the crimping machine. The method for eliminating the defect of crimping misalignment of galvanized finished product steel plates has the advantages that the steel plate crimping quality is improved; the defect of crimping misalignment of galvanized finished product steel plates is eliminated; the material yield reaches 90% above; the method is improved based on the original device, and the input is less.
Description
Technical field
The present invention relates to cold-strip steel coating deep processing field, relate in particular to a kind of method of eliminating the curling misalignment defect of zinc-plated finished steel plate.
Background technology
Angang Cold Rolling galvanized wire has been gone into operation 10 years, and a lot of equipment starts aging, and control accuracy declines.Zinc-plated afterbody finished product coiled body is because roller system is aging, slewing rollers roll surface roughness declines, coefficient of friction reduces, cause steel plate to add run-up in cycling start and open that in process, (now curling tension force is also in the adjusting stage, fluctuate larger) steel plate and slippage of roll face, suddenly moment side direction play, now the curling deviation-rectifying system of EPC patrols marginal ray electric probe followability and moves the adjustment of rectifying a deviation, result causes steel plate curly course to occur misalignment, and we are also referred to as curling staggered floor.In addition, because the curling deviation-rectifying system proportional servo valve of EPC is aging, characteristic changes, for example zero partially, the linearity, response time etc. parameter distribution is deteriorated, the in the situation that of original P proportional gain parameter constant, the as easy as rolling off a log situation that occurs hydraulic mechanism adjustment vibration, has so just accelerated the probability that curling misalignment occurs.
Summary of the invention
For overcoming the deficiencies in the prior art, the object of this invention is to provide a kind of method of eliminating the curling misalignment defect of zinc-plated finished steel plate, realize and adjust in real time correction, reduce the curling misalignment degree of steel plate, improve the product rate of becoming a useful person.
For achieving the above object, the present invention is achieved through the following technical solutions:
A method of eliminating the curling misalignment defect of zinc-plated finished steel plate, comprising:
1), in end segment cycling start process, when curling tension force dynamic value T error is less than 2%, EPC deviation-rectifying system drops into automatic deviation correction pattern;
2) optimization of adjusting to servo valve automatic gain P parameter, the adjuster of servo valve reponse system is proportional controller, and proportional gain P is variable element, and X is relevant to crimping machine afterbody unit speed, and the pass of proportional gain P and crimping machine afterbody unit speed X is:
When 36m/min≤X < 45m/min, P=120;
When 45m/min≤X < 60m/min, P=80;
When 60m/min≤X≤80m/min, P=50;
When X > 80, P=30;
3) sensitivity of dividing a word with a hyphen at the end of a line of the optic probe of EPC deviation-rectifying system realizes by the potentiometer of the KVK circuit board of correction crimping machine.
Curling tension force dynamic value described in step 1) is passed through formula: T=n*g/ (D/2) obtains,
In formula: T actual tension, the speed reducing ratio of g reducer gear, the actual coil diameter of D crimping machine steel plate, n crimping machine operation torque; Wherein, operation torque n obtains after the actual torque feedback of motor is cut to totator inertia and friction torque and other compensation.
The concrete potential parameters of potentiometer of the KVK circuit board described in step 3) is according to on-the-spot actual condition debugging value
295-305 ohm.
Compared with prior art, the invention has the beneficial effects as follows:
Improved the curling quality of steel plate, eliminated the curling misalignment defect of zinc-plated finished steel plate, lumber recovery has reached more than 91%, relies on existing equipment to improve, and drops into little.
Accompanying drawing explanation
Fig. 1 is the graph of a relation of proportional gain P and crimping machine afterbody unit speed X.
Fig. 2 is zinc-plated finished steel plate coiled up device pie graph.
In figure: 1-Hydraulic Station proportional servo valve 2-electrical control cubicles 3-Position Control monitor 4-band 5-guide roller 6-sends light source 7-crimping machine 8-center monitor 9-mobile hydraulic cylinder.
The specific embodiment
Below in conjunction with Figure of description, the present invention is described in detail, but should be noted that enforcement of the present invention is not limited to following embodiment.
A method of eliminating the curling misalignment defect of zinc-plated finished steel plate, comprising:
1) in end segment cycling start process, crimping machine accelerated service, curling tension fluctuation is violent, and the degree of fluctuation of tension force is made to Deviation Control, and when curling tension force dynamic error is less than 2%, EPC deviation-rectifying system drops into automatic deviation correction pattern;
2) optimization of adjusting to servo valve automatic gain P parameter, the adjuster of servo valve reponse system is proportional controller, proportional gain P is variable element, X is relevant to crimping machine afterbody unit speed, when crimping machine low speed, curling tension fluctuation is larger, and misalignment very easily produces, proportional gain P sets high value, the rapidity of raising system correction; When crimping machine high speed, curling tension force is more steady, is difficult for producing misalignment, and proportional gain P sets lower value, the stability of keeping system correction;
3) sensitivity of dividing a word with a hyphen at the end of a line of the optic probe of EPC deviation-rectifying system realizes by the potentiometer of revising KVK circuit board.For making probe action frequency not be subject to the impact of steel plate edge side direction play, reduce the interference of the frequent play of steel plate to probe, the concrete potential parameters of potentiometer of KVK circuit board debugs out according to on-the-spot actual condition, value 295-305 ohm herein.
The curling tension force dynamic value of step 1) is passed through formula: T=n*g/ (D/2) obtains,
In formula: T actual tension, the speed reducing ratio of g reducer gear, the actual coil diameter of D crimping machine steel plate, n crimping machine operation torque; Wherein, operation torque n obtains after the actual torque feedback of motor is cut to totator inertia and friction torque and other compensation.
Seeing Fig. 1, according to on-site actual situations, to the optimization of adjusting of servo valve automatic gain P parameter, avoid because proportional servo valve is aging, there is the deteriorated switching moment adjusting overshoot causing and produces misalignment in characteristic.The pass of proportional gain P after adjustment and crimping machine afterbody unit speed X is:
X=36～45m/min P=120；
X=45～60m/min P=80；
X=60～80m/min P=50；
X>80m/min P=30。
See Fig. 2, zinc-plated finished steel plate coiled up device is mainly by Hydraulic Station proportional servo valve 1, electrical control cubicles 2, seat control monitor 3, band 4, guide roller 5, send light source 6, crimping machine 7, center monitor 8, mobile hydraulic cylinder 9 forms, in end segment cycling start process, due to crimping machine now in accelerated service and tension adjustment in the more violent stage of dynamic fluctuation, so now immediately EPC deviation-rectifying system deviation-rectifying system is not dropped into automatic control state, avoid steel plate because of tension force shakiness, slippage of roll face and suddenly side direction play by a relatively large margin EPC deviation-rectifying system is patrolled to the interference of limit probe, need to judge whether EPC deviation-rectifying system drops into automatic deviation correction pattern according to the adjustment degree of tension force, prevent now tension fluctuation, roll surface friction roughness declines to skidding and causes the action of deviation-rectifying system followability, cause the generation of misalignment.Therefore, by revising PLC control program, improve the logic Rule of judgment between afterbody HPC threading sequence and EPC deviation-rectifying system, reduce the generation of misalignment defect.Therefore adopt in end segment cycling start process, crimping machine accelerated service, curling tension fluctuation is violent, and the degree of fluctuation of tension force is made to Deviation Control, and when curling tension force dynamic error is less than 2%, EPC deviation-rectifying system drops into automatic deviation correction pattern.
The present invention has improved the curling quality of steel plate, has eliminated the curling misalignment defect of zinc-plated finished steel plate, and lumber recovery has reached more than 91%, relies on existing equipment to improve, and drops into little.
Claims (3)
1. a method of eliminating the curling misalignment defect of zinc-plated finished steel plate, is characterized in that, comprising:
1), in end segment cycling start process, when curling tension force dynamic value T error is less than 2%, EPC deviation-rectifying system drops into automatic deviation correction pattern;
2) optimization of adjusting to servo valve automatic gain P parameter, the adjuster of servo valve reponse system is proportional controller, and proportional gain P is variable element, and X is relevant to crimping machine afterbody unit speed, and the pass of proportional gain P and crimping machine afterbody unit speed X is:
When 36m/min≤X < 45m/min, P=120;
When 45m/min≤X < 60m/min, P=80;
When 60m/min≤X≤80m/min, P=50;
When X > 80, P=30;
3) sensitivity of dividing a word with a hyphen at the end of a line of the optic probe of EPC deviation-rectifying system realizes by the potentiometer of the KVK circuit board of correction crimping machine.
2. a kind of method of eliminating the curling misalignment defect of zinc-plated finished steel plate according to claim 1, is characterized in that, the curling tension force dynamic value described in step 1) is passed through formula: T=n*g/ (D/2) obtains,
In formula: T actual tension, the speed reducing ratio of g reducer gear, the actual coil diameter of D crimping machine steel plate, n crimping machine operation torque; Wherein, operation torque n obtains after the actual torque feedback of motor is cut to totator inertia and friction torque and other compensation.
3. a kind of method of eliminating the curling misalignment defect of zinc-plated finished steel plate according to claim 1, is characterized in that, the concrete potential parameters of potentiometer of the KVK circuit board described in step 3) is according to on-the-spot actual condition debugging value 295-305 ohm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607493A (en) * | 2015-01-19 | 2015-05-13 | 宁波钢铁有限公司 | Coiling position control method adopting main proportional control and auxiliary integral control |
| CN113897545A (en) * | 2021-09-02 | 2022-01-07 | 河钢股份有限公司承德分公司 | Super-thick zinc layer high-strength non-flower hot-dip galvanized steel sheet, super-thick zinc layer high-strength non-flower hot-dip galvanized steel coil and preparation method thereof |
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| CN2732695Y (en) * | 2004-09-22 | 2005-10-12 | 上海科先液压成套有限公司 | Correction servo device for plate strip rolling |
| JP2011062710A (en) * | 2009-09-15 | 2011-03-31 | Nisshin Steel Co Ltd | Device and method for controlling position in width direction of metal strip |
| CN201801217U (en) * | 2010-09-19 | 2011-04-20 | 安徽精诚铜业股份有限公司 | Copper strip deviation correcting device of copper strip coil opening machine |
| CN203316514U (en) * | 2013-05-17 | 2013-12-04 | 山东美多集团有限公司 | Automatic steel coil filing and rolling system |
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2013
- 2013-12-20 CN CN201310714762.3A patent/CN103736773B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2732695Y (en) * | 2004-09-22 | 2005-10-12 | 上海科先液压成套有限公司 | Correction servo device for plate strip rolling |
| JP2011062710A (en) * | 2009-09-15 | 2011-03-31 | Nisshin Steel Co Ltd | Device and method for controlling position in width direction of metal strip |
| CN201801217U (en) * | 2010-09-19 | 2011-04-20 | 安徽精诚铜业股份有限公司 | Copper strip deviation correcting device of copper strip coil opening machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607493A (en) * | 2015-01-19 | 2015-05-13 | 宁波钢铁有限公司 | Coiling position control method adopting main proportional control and auxiliary integral control |
| CN113897545A (en) * | 2021-09-02 | 2022-01-07 | 河钢股份有限公司承德分公司 | Super-thick zinc layer high-strength non-flower hot-dip galvanized steel sheet, super-thick zinc layer high-strength non-flower hot-dip galvanized steel coil and preparation method thereof |
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| CN103736773B (en) | 2017-04-26 |
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