CN103008359A - Thin material threading control method for guide rulers of hot rolling coiler - Google Patents
Thin material threading control method for guide rulers of hot rolling coiler Download PDFInfo
- Publication number
- 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
- Authority
- CN
- China
- Prior art keywords
- jig
- short stroke
- steel
- short
- opening degree
- 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.)
- Granted
Links
Images
Landscapes
- Control Of Metal Rolling (AREA)
Abstract
The invention provides a thin material threading control method for guide rulers of a hot rolling coiler. The method comprises the following steps of: additionally arranging a pressure sensor, and additionally arranging an analog quantity input plate and a corresponding program in a PLC (Programmable Logic Controller); when steel is fed through a second frame, setting the opening degrees of the guide rulers by using a secondary computer: when the head part of a steel strip arrives at the middle position of each guide ruler, controlling to start up a primary short stroke and a second short stroke in sequence on the working sides and transmission sides of the guide rulers by using the PLC; judging whether the WS clamping force feedback on the working sides of the guide rulers is more than or equal to 7KN and can last for 50 milliseconds or not at the moment after, and if so, directly switching to a guide ruler working side pressure automatic control way; otherwise, setting a third short stroke: if the working sides of the guide rulers never meet a switching condition, directly switching to an AFC (Automatic Frequency Control) way after the third short strokes of the working sides of the guide rulers are completed. Due to the adoption of the method, the 'inner tower' phenomenon and head cutting loss of a steel coil can be eliminated, the total sealing rate is controlled to be below 1.8 percent, the hot rolling coiling quality is improved greatly, and rolling yield is increased greatly, and the recoiling quantity of sub-coils is reduced by over 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210559466.6A CN103008359B (en) | 2012-12-21 | 2012-12-21 | Thin material threading control method for guide rulers of hot rolling coiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210559466.6A CN103008359B (en) | 2012-12-21 | 2012-12-21 | Thin material threading control method for guide rulers of hot rolling coiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103008359A true CN103008359A (en) | 2013-04-03 |
| CN103008359B CN103008359B (en) | 2014-07-30 |
Family
ID=47957780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210559466.6A Active CN103008359B (en) | 2012-12-21 | 2012-12-21 | Thin material threading control method for guide rulers of hot rolling coiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103008359B (en) |
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 | A kind of hot-strip scroll automatic adjusting method |
| 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 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3961509A (en) * | 1974-05-21 | 1976-06-08 | Vereinigte Flugtechnische Werke-Fokker Gesellschaft Mit Beschrankter Haftung | Roll gap control |
| JPH03264110A (en) * | 1990-03-12 | 1991-11-25 | Ishikawajima Harima Heavy Ind Co Ltd | Method for controlling side guides |
| CN1060797A (en) * | 1990-10-23 | 1992-05-06 | 石川岛播磨重工业株式会社 | Method for controlling side guide means |
| JP2006263779A (en) * | 2005-03-24 | 2006-10-05 | Jfe Steel Kk | Side guide control method for hot rolling apparatus |
| CN101585055A (en) * | 2008-05-22 | 2009-11-25 | 上海梅山钢铁股份有限公司 | Coiling side guide plate control method capable of memorizing optimized operation behavior |
| CN102632084A (en) * | 2012-04-28 | 2012-08-15 | 山西太钢不锈钢股份有限公司 | Method for controlling head tower of stainless steel hot-rolled coil |
-
2012
- 2012-12-21 CN CN201210559466.6A patent/CN103008359B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3961509A (en) * | 1974-05-21 | 1976-06-08 | Vereinigte Flugtechnische Werke-Fokker Gesellschaft Mit Beschrankter Haftung | Roll gap control |
| JPH03264110A (en) * | 1990-03-12 | 1991-11-25 | Ishikawajima Harima Heavy Ind Co Ltd | Method for controlling side guides |
| CN1060797A (en) * | 1990-10-23 | 1992-05-06 | 石川岛播磨重工业株式会社 | Method for controlling side guide means |
| JP2006263779A (en) * | 2005-03-24 | 2006-10-05 | Jfe Steel Kk | Side guide control method for hot rolling apparatus |
| CN101585055A (en) * | 2008-05-22 | 2009-11-25 | 上海梅山钢铁股份有限公司 | Coiling side guide plate control method capable of memorizing optimized operation behavior |
| CN102632084A (en) * | 2012-04-28 | 2012-08-15 | 山西太钢不锈钢股份有限公司 | Method for controlling head tower of stainless steel hot-rolled coil |
Non-Patent Citations (3)
| Title |
|---|
| 卢斌等: "不锈钢卷取过程分析及卷形改善措施", 《中国冶金》 * |
| 耿怡涛等: "热轧卷板错层问题的分析与对策", 《安徽冶金》 * |
| 黄楠等: "唐山不锈钢1580热轧卷取侧导板自动控制过程", 《2009年河北省轧钢技术与学术年会论文集（下）》 * |
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 | A kind of hot-strip scroll automatic adjusting method |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103008359B (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103008359B (en) | Thin material threading control method for guide rulers of hot rolling coiler | |
| CN101581944B (en) | Control method of alternative pressure of side guides of hot strip mill coiler | |
| CN104525575B (en) | Correction control method is led in a kind of hot-strip reels side | |
| CN104759488B (en) | Method for realizing sectional control during steel passing process of hot-rolled strip steel coiling side guide plate | |
| CN104107837B (en) | The method of accurate control cincture steel percentage elongation when weld seam crosses planisher | |
| CN104308365B (en) | For laser assembly solder machine piece technique and the device thereof of output strip line | |
| CN102896180A (en) | Control method of hot-rolling rolled side guide plate for improving hot-rolling roll shape quality | |
| CN102806250A (en) | Method for flatting stainless steel strips | |
| CN103088354A (en) | Control method for eliminating strip steel bending-crease defect | |
| CN103170502B (en) | Hot rolling rough straightening machine strip steel centering control method | |
| CN102279585B (en) | Flying shear control system of cold continuous rolled strip steel and control method thereof | |
| CN104971950A (en) | Automatic deceleration control method of tandem cold mill | |
| CN103240285A (en) | Method for achieving automatic clamping centering of hot rolling strip steel manipulator | |
| CN112570468A (en) | Control method for preventing steel coil from being staggered by clamping and feeding roller of coiling machine of hot rolling production line | |
| CN109248926A (en) | A kind of planisher no-station pole canopy belt steel flating control method | |
| CN106493172B (en) | A method of it solving Thin Strip Steel and generates fold in batching crossing process | |
| CN202126610U (en) | Cold tandem rolling strip steel flying shear control system | |
| CN202845435U (en) | Hoisting equipment capable of improving stainless steel yield | |
| CN110314939A (en) | A kind of strip steel head levelling method carried out using skin pass mill group | |
| CN104162548A (en) | Switching method of hot-rolling recoiling machines | |
| CN110293137B (en) | Automatic threading control method of hot rolling leveling and coil splitting unit | |
| CN111570529B (en) | Automatic control method of coiling machine in emergency of strip breakage of fully-continuous hot-rolled thin strip line | |
| CN102873107B (en) | High synchronizing control method of pressing system of hot galvanizing skin pass machine | |
| CN106975662B (en) | A kind of hot rolling reeling inner ring of steel coil coil shape control method | |
| CN102601165B (en) | Control method for small-tension tape penetrating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |