CN103008359A - Hot rolling coiler guide rule thin material threading control method - Google Patents
Hot rolling coiler guide rule thin material threading control method Download PDFInfo
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- CN103008359A CN103008359A CN2012105594666A CN201210559466A CN103008359A CN 103008359 A CN103008359 A CN 103008359A CN 2012105594666 A CN2012105594666 A CN 2012105594666A CN 201210559466 A CN201210559466 A CN 201210559466A CN 103008359 A CN103008359 A CN 103008359A
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- 239000000463 material Substances 0.000 title claims abstract description 14
- 238000005098 hot rolling Methods 0.000 title claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 12
- 238000005096 rolling process Methods 0.000 claims abstract description 10
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- 238000004364 calculation method Methods 0.000 claims description 3
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- 239000008186 active pharmaceutical agent Substances 0.000 description 5
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Abstract
The invention provides a thin material threading control method of a guide ruler of a hot rolling coiler. When the second frame advances the steel, the guide ruler executes a secondary computer to set the opening degree: when the head of the strip steel reaches the middle position of the guide ruler, the PLC controls the working side and the transmission side of the guide ruler to start a primary short stroke and a secondary short stroke in sequence; after the completion, the PLC judges whether the WS clamping force feedback of the guide ruler working side at the moment is more than or equal to 7KN and lasts for 50ms, and if the WS clamping force feedback is met, the automatic control mode of the guide ruler working side pressure is directly switched to; otherwise, executing three short-stroke settings: and if the working side of the guide ruler does not meet the switching condition all the time, directly switching the guide ruler working side into an AFC mode after three short strokes of the guide ruler working side are completed. The invention can eliminate the 'inner tower' phenomenon and the head cutting loss of the steel coil, the total blocking rate is controlled below 1.8 percent, the hot rolling coiling quality and the rolling line yield are greatly improved, and the coil weight of the coil sub-coiling is reduced by more than 30 percent.
Description
Technical field
The invention belongs to the steel rolling process technical field, relate in particular to a kind of for hot rolling coiler jig thin material threading control method.
Background technology
Before every coiling machine of hot-strip a pair of jig is arranged, guarantee that in order to the clamping steel plate plate centre line overlaps as far as possible with rolling centerline, article two, center line is near coincidence, band steel center line is more stable, the finished steel coils scroll is better, and especially jig clamping speed plays a key effect to the steel coil head turriform when the thin material threading.
Hot rolling thin material coiling machine threading speed reaches 12m/s, the band steel head arrives jig centre position (jig HMD) moment jig and begins action, after closing through twice short stroke, jig switches to automatic pressure control (AFC) mode, until the actual steel plate that is clamped to of jig, the time spent is at least about 4.4s altogether.When below producing 2.50mm, being with steel, because the existence of the mechanical friction power of jig and unstable own, existing detection means can't be rejected fully with computational methods, and this gauge strip steel jig AFC is set as about 10kN simultaneously, and the given computational methods of control servo valve are:
Servo valve is given=(AFC setting-AFC feedback) * proportional control factor+penalty constant.
Because general frictional force feedback about 5-8kN, therefore will cause servo valve output less than normal, thereby jig clamping strip speed is very slow.Jig HMD is 5.7m to the reel distance, therefore be with the steel 52.8m that walked during this period, and head average about 4.5m one circle when batching, coiling machine had at least batched 10 circles when jig was clamped to the band steel, this 10 astragal steel center line is free state fully, even sometimes when producing the 1.6mm container thin material, because that chucking power is set is very little, often the situation that 20 multi-turn jigs also are not clamped to steel plate has been batched in appearance.Therefore when 3.0mm and the production of following gauge strip steel, 30% the band steel of having an appointment has seriously " interior tower " phenomenon through batching occiput, need to remove the bundling rewinding, even wherein have an appointment and excise by waste product about 1% steel coil head 10-50m, caused significant impact for hot-rolled finished product quality, lumber recovery and cost control.
Summary of the invention
Purpose of the present invention is intended to eliminate defects, thereby a kind of hot rolling thin material lumber recovery that improves is provided, and improves hot-rolled finished product volume scroll, improves the quality of products the hot rolling coiler jig thin material threading control method that reduces production costs.
For this reason, the solution taked of the present invention is:
A kind of hot rolling coiler jig thin material threading control method comprises the PLC(programmable logic controller), second computer and detect the 2# hydraulic cylinder piston and the pressure sensor of cylinder bar pressure, it is characterized in that:
One group of pressure sensor is installed, is detected 1# hydraulic cylinder piston and cylinder bar pressure; In PLC, set up analog input, and revision establishment jig opening degree setting program, pressure feedback calculation procedure, strip tracking program and jig opening degree and pressure automatic control program, when being with steel between two hydraulic cylinder active regions, two pressure feedback are averaged as the actual clamping plate pressure of jig;
The concrete control procedure of jig is:
1, jig is kept the last opening degree of setting, and when first frame of finish rolling was advanced steel, this piece of jig opening degree steel was set beginning, and the errorless backward second computer of data check sends the data receiver settling signal;
2, when second frame of finish rolling advanced steel, jig is carried out second computer and is set opening degree:
One-sided jig is set opening degree=(strip width+second computer is set width allowance+short stroke allowance+secondary short stroke allowance)/2;
3, when the band steel head arrives the jig centre position, PLC control jig active side and short stroke of jig transmission side start, whether the jig both sides, and continue to detect a short stroke and finish to steel plate 100 mm that advance with maximal rate, until a short stroke finishes;
When 4, a short stroke was finished, PLC carries out the jig active side and jig transmission side secondary short stroke starts, and whether the jig both sides, and continue to detect the secondary short stroke and finish to steel plate 50 mm that advance with maximal rate, until the secondary short stroke finishes;
5, after the secondary short stroke is finished, PLC judge this moment jig active side chucking power feedback whether 〉=7KN and lasting 50ms, if condition satisfies, then be directly switch to jig active side pressure automatic control AFC control mode, the jig transmission side remains unchanged; Otherwise jig transmission side, jig active side are carried out three short strokes and set: three short strokes are set opening degree=secondary and are set strip width/2; The jig transmission side is carried out three short strokes always and is set, until three short strokes are complete; And the jig active side continues whether judge chucking power 〉=and 7KN and lasting 50 ms, in case condition satisfies, then the jig active side abandons carrying out three short strokes settings, converts rapidly the AFC control mode to; The jig active side never satisfies AFC control mode switching condition in three short stroke processes if carry out, then the complete rear AFC control mode that directly switches to of three short strokes of jig active side.
Beneficial effect of the present invention is:
After the present invention puts into operation, eliminated " interior tower " phenomenon of batching rear coil of strip and the head that causes thus excision loss, greatly reduce owing to batching the blockade that the jig reason causes, total blocking rate is controlled at below 1.8%, not only greatly improve hot rolling reeling quality and rolling line lumber recovery, reduced production cost, and reduced bundling rewinding amount more than 30%, improve hot-rolled finished product volume scroll, the various expenses such as can reduce that the auxiliary equipment such as crane, Hydraulic Station and material are had bad luck simultaneously.
Description of drawings
Fig. 1 is hot rolling coiler jig thin material threading control flow chart.
The specific embodiment
Hot rolling coiler jig thin material threading control method of the present invention, be at original PLC, second computer and detect on the basis of pressure sensor of 2# hydraulic cylinder piston and cylinder bar pressure, installed again one group of pressure sensor that detects 1# hydraulic cylinder piston and cylinder bar pressure additional; In PLC, set up simultaneously the M35N analog input, and revision establishment jig opening degree setting program, pressure feedback calculation procedure, strip tracking program and jig opening degree and pressure automatic control program, when being with steel between two hydraulic cylinder active regions, two pressure feedback are averaged as the actual clamping plate pressure of jig.
The concrete control procedure of jig is:
1, jig is kept the last opening degree of setting, and when first frame of finish rolling (F1) when advancing steel, this piece of jig opening degree steel is set beginning, and the errorless backward second computer of data check sends the data receiver settling signal.
2, when second frame of finish rolling (F2) when advancing steel, jig is carried out second computer and is set opening degree:
One-sided jig is set opening degree=(strip width+second computer is set width allowance+short stroke allowance+secondary short stroke allowance)/2
Complete rear wait band steel head arrives jig centre position (jig HMD).
3, when band steel head arrival jig HMD signal comes, PLC control jig active side (jig WS) and short stroke of jig transmission side (jig DS) start, the jig both sides with maximal rate to steel plate 100 mm that advance, whether and continue to detect a short stroke and finish, until a short stroke finishes.
When 4, a short stroke settling signal came, PLC carries out jig WS and jig DS secondary short stroke starts, and whether the jig both sides, and continue to detect the secondary short stroke and finish to steel plate 50 mm that advance with maximal rate, until the secondary short stroke finishes.
5, after secondary short stroke settling signal comes, PLC judge this moment jig WS chucking power feedback whether 〉=7KN and lasting 50ms, if condition satisfies, then be directly switch to jig WS pressure automatic control AFC control mode, jig DS remains unchanged; Otherwise jig DS, jig WS carry out three short strokes and set: three short strokes are set opening degree=secondary and are set strip width/2.Jig DS carries out three short strokes always and sets, until three short strokes are complete; And jig WS continues whether judge chucking power 〉=and 7KN and lasting 50 ms, in case condition satisfies, then jig WS abandons carrying out three short strokes settings, converts rapidly the AFC control mode to; Jig WS never satisfies AFC control mode switching condition in three short stroke processes if carry out, then the complete rear AFC control mode that directly switches to of three short strokes of jig WS.
Claims (1)
1. hot rolling coiler jig thin material threading control method comprises PLC, second computer and detects the pressure sensor of 2# hydraulic cylinder piston and cylinder bar pressure, it is characterized in that:
One group of pressure sensor is installed, is detected 1# hydraulic cylinder piston and cylinder bar pressure; In PLC, set up analog input, and revision establishment jig opening degree setting program, pressure feedback calculation procedure, strip tracking program and jig opening degree and pressure automatic control program, when being with steel between two hydraulic cylinder active regions, two pressure feedback are averaged as the actual clamping plate pressure of jig;
The concrete control procedure of jig is:
(1), jig keeps the last opening degree of setting, when first frame of finish rolling was advanced steel, this piece of jig opening degree steel was set beginning, the errorless backward second computer of data check sends the data receiver settling signal;
(2), when second frame of finish rolling advanced steel, jig is carried out second computer and is set opening degree:
One-sided jig is set opening degree=(strip width+second computer is set width allowance+short stroke allowance+secondary short stroke allowance)/2;
(3), when the band steel head arrives the jig centre position, PLC control jig active side and short stroke of jig transmission side start, whether the jig both sides, and continue to detect a short stroke and finish to steel plate 100 mm that advance with maximal rate, until a short stroke finishes;
(4), when a short stroke is finished, PLC carries out the jig active side and jig transmission side secondary short stroke starts, whether the jig both sides, and continue to detect the secondary short stroke and finish to steel plate 50 mm that advance with maximal rate, until the secondary short stroke finishes;
(5), after the secondary short stroke finishes, PLC judge this moment jig active side chucking power feedback whether 〉=7KN and lasting 50ms, if condition satisfies, then be directly switch to jig active side pressure automatic control AFC control mode, the jig transmission side remains unchanged; Otherwise jig transmission side, jig active side are carried out three short strokes and set: three short strokes are set opening degree=secondary and are set strip width/2; The jig transmission side is carried out three short strokes always and is set, until three short strokes are complete; And the jig active side continues whether judge chucking power 〉=and 7KN and lasting 50 ms, in case condition satisfies, then the jig active side abandons carrying out three short strokes settings, converts rapidly the AFC control mode to; The jig active side never satisfies AFC control mode switching condition in three short stroke processes if carry out, then the complete rear AFC control mode that directly switches to of three short strokes of jig active side.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210559466.6A CN103008359B (en) | 2012-12-21 | 2012-12-21 | Hot rolling coiler guide rule thin material threading control method |
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| CN201210559466.6A CN103008359B (en) | 2012-12-21 | 2012-12-21 | Hot rolling coiler guide rule thin material threading control method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140825A (en) * | 2016-06-28 | 2016-11-23 | 攀钢集团攀枝花钢钒有限公司 | A kind of flipper guide control method preventing hot-continuous-rolling strip steel from producing wedge shape |
| CN108480407A (en) * | 2018-03-16 | 2018-09-04 | 山东鲁冶瑞宝电气自动化有限公司 | A kind of control method of coiling machine guide ruler short stroke |
| CN110000220A (en) * | 2019-04-09 | 2019-07-12 | 鞍钢股份有限公司 | Automatic adjusting method for coil shape of hot-rolled strip steel |
| CN111054753A (en) * | 2019-11-29 | 2020-04-24 | 首钢智新迁安电磁材料有限公司 | Strip steel head threading control method and system |
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2012
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106140825A (en) * | 2016-06-28 | 2016-11-23 | 攀钢集团攀枝花钢钒有限公司 | A kind of flipper guide control method preventing hot-continuous-rolling strip steel from producing wedge shape |
| CN106140825B (en) * | 2016-06-28 | 2018-06-29 | 攀钢集团攀枝花钢钒有限公司 | A kind of flipper guide control method for preventing hot-continuous-rolling strip steel from generating wedge shape |
| CN108480407A (en) * | 2018-03-16 | 2018-09-04 | 山东鲁冶瑞宝电气自动化有限公司 | A kind of control method of coiling machine guide ruler short stroke |
| CN110000220A (en) * | 2019-04-09 | 2019-07-12 | 鞍钢股份有限公司 | Automatic adjusting method for coil shape of hot-rolled strip steel |
| CN111054753A (en) * | 2019-11-29 | 2020-04-24 | 首钢智新迁安电磁材料有限公司 | Strip steel head threading control method and system |
| CN111054753B (en) * | 2019-11-29 | 2021-09-03 | 首钢智新迁安电磁材料有限公司 | Strip steel head threading control method and system |
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| CN103008359B (en) | 2014-07-30 |
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