CN102921739B - Hot rolled strip steel coiling optimization method - Google Patents
Hot rolled strip steel coiling optimization method Download PDFInfo
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- CN102921739B CN102921739B CN201210449947.1A CN201210449947A CN102921739B CN 102921739 B CN102921739 B CN 102921739B CN 201210449947 A CN201210449947 A CN 201210449947A CN 102921739 B CN102921739 B CN 102921739B
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- pinch roll
- correction value
- turriform
- pressure
- pressure correction
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Abstract
The utility model provides a hot rolled strip steel coiling optimization method. The method is that quick amendment of pinch roll pressure can be achieved through the pressure amendment value interface data of a pinch roll drive side of a coiling machine and an operating side of the coiling machine on a monitoring picture. Therefore, the problem of steel coil telescopicity caused by the uneven abrasion loss on two sides of a pinch roll and changing of levelness of the pinch roll is solved. And the problem of strip steel misalignment caused by the fact that set pinch roll pressure is low is solved. Pressure amendment value interfaces of the pinch roll drive side and the operating side are divided on the basis of the thickness specifications according to production situations, and accordingly continuous production of strip steel with different thickness specifications is achieved, and frequent adjusting because of changing of the thickness is avoided.
Description
technical field:
What the present invention relates to is the optimization method of a kind of hot-strip scroll optimization method, especially turriform and staggered floor.
background technology:
In hot rolling is produced, pinch roll is the key equipment that affects steel coil form quality amount, and after equipment installation, along with the prolongation of rolling time, pinch roll both sides wear extent inequality, pinch roll levelness change, and cause being with the inclined to one side transmission side of steel or fore side, cause steel roll tower shaped; Withdrawal roll pressure is set less than normal, and effectively clamping band steel causes being with steel to move about, thereby causes band steel staggered floor problem.
Turriform refers to that steel edge portion coiling is not concordant, and a place or many places go out the bad scroll on limit in the shape of a spiral.Mainly be divided into two kinds of a tower and tailing columns.Tower departs from and causes from rolling centerline after being with steel head to depart from rolling centerline or 2-3 circle.Tailing column departs from and causes from rolling centerline after being with steel afterbody to depart from rolling centerline or 2-3 circle.Staggered floor is uneven between roll bending layer and layer or multilayer and multilayer.
Turriform volume and staggered floor form main cause:
(1) band steel camber, wedge shape, abnormal convexity and wave, the material hardness turriform that all easily produces such as large.
(2) be with steel misalignment guide plate center to enter coiling machine when threading.
(3) centralising device is malfunctioning, thus in the time that rolling line moves correctly feedback signal adjust produce turriform.
(4) there is large fluctuation in coiling tension.
summary of the invention:
The present invention be directed to the scroll quality problems that occur in hot rolling production, and a kind of hot-strip scroll optimization method is provided, the method relies on monitored picture top pinch roll transmission side, fore side pressure correction value interface data, realizes the quick correction of Withdrawal roll pressure.Pinch roll transmission side, fore side pressure correction value interface, divide according to thickness specification band steel according to the condition of production, thereby realize the continuous production of different-thickness gauge strip steel, the frequent adjustment of having avoided varied in thickness to cause.
The present invention is achieved by the following technical measures:
The elimination of turriform comprises the following steps,
(1) detect belt steel thickness H by checkout gear
t,
(2) determine that by detecting the fore side (WS) of the position of turriform at the transmission side of pinch roll (DS) or pinch roll appears in coil,
(3) determine by detection the maximum turriform height of the transmission side T that coil occurs
dor the maximum turriform height of fore side T
w,
(4) manually adjust pressure correction value at monitoring interface,
When turriform appears at DS side, according to maximum turriform height T
dincrease the pressure correction value F of DS side
d, the correction value size of adjustment is as follows,
T
D/mm F
D/N
10 2000
20 4000
30 6000
40 7000
50 8000
Or reduce the pressure correction value of WS side, the correction value size of adjustment is as follows,
T
D/mm F
W/N
10 -2000
20 -4000
30 -6000
40 -7000
50 -8000
When turriform appears at WS side, according to maximum turriform height T
wincrease the pressure correction value F of WS side
w, the correction value size of adjustment is as follows,
T
W/mm F
W/N
10 2000
20 4000
30 6000
40 7000
50 8000
Or reduce the pressure correction value of DS side, the correction value size of adjustment is as follows,
T
W/mm F
D/N
10 -2000
20 -4000
30 -6000
40 -7000
50 -8000
(5) review and validate the pressure correction value of adjusting in monitoring interface, with the belt steel thickness H detecting in step (1)
tthe belt steel thickness scope segmentation at place is corresponding;
The elimination of staggered floor comprises the following steps,
(1) detect belt steel thickness H by checkout gear
c,
(2) determine by detection the maximum staggered floor amount C that coil occurs,
(3) at monitoring interface according to the size of maximum staggered floor amount C, adjust the pressure correction value F of DS side and WS side simultaneously
dand F
w, adjust correction value size as follows,
C/mm F
D/N F
W/N
10 2000 2000
20 5000 5000
30 9000 9000
40 13000 13000
50 18000 18000
(4) review and validate the pressure correction value of adjusting in monitoring interface, with the belt steel thickness H detecting in step (1)
cthe belt steel thickness scope segmentation at place is corresponding.
According to same size coil of strip scroll situation, the pressure correction value of pinch roll transmission side, fore side is modified.There is transmission side turriform in band steel, according to turriform amount, increases the pressure correction value in the corresponding thickness range of pinch roll transmission side or reduce the pressure correction value in the corresponding thickness range of pinch roll fore side; There is fore side turriform in band steel, according to turriform amount, increases the pressure correction value in the corresponding thickness range of pinch roll fore side or reduce the pressure correction value in the corresponding thickness range of pinch roll transmission side; As be with steel to occur staggered floor problem, increase the pressure correction value in transmission side thickness range corresponding to fore side simultaneously.
Pressure correction value is adjusted the corresponding relation of size and maximum turriform amount or maximum staggered floor amount, as described in above-mentioned steps.
The maximum turriform amount detecting in above-mentioned steps is between two adjacent maximum turriform amounts time, and the pressure correction value of its adjustment is between pressure correction value corresponding to these two adjacent maximum turriform amounts;
The maximum staggered floor amount detecting in above-mentioned steps is between two adjacent maximum staggered floor amounts time, and the pressure correction value of its adjustment is between pressure correction value corresponding to these two adjacent maximum staggered floor amounts.
The parameter that above-mentioned monitoring interface shows has: current belt steel thickness H, the thickness range segmentation of 1# pinch roll DS side, the thickness range segmentation of 1# pinch roll WS side, the thickness range segmentation of 2# pinch roll DS side, the thickness range segmentation of 2# pinch roll WS side, 1# Withdrawal roll pressure secondary setting value, 2# Withdrawal roll pressure secondary setting value, 1# pinch roll DS lateral pressure integrated value, 1# pinch roll WS lateral pressure integrated value, 2# pinch roll DS lateral pressure integrated value, 2# pinch roll WS lateral pressure integrated value, wherein, current thickness in monitoring interface, secondary setting value, thickness range, the Show Color of pressure integrated value and correction value is different, pressure integrated value be secondary setting value with correction value and.
The beneficial effect of this programme can be learnt according to the narration to such scheme, in this scheme, pass through the modification of pinch roll transmission side, fore side pressure correction value, can improve fast band steel produce in the scroll quality problems such as steel roll tower shaped, staggered floor, can avoid the frequent adjustment causing due to varied in thickness, thereby realize the continuous production of different-thickness gauge strip steel simultaneously.As can be seen here, the present invention has substantive distinguishing features, and the beneficial effect of its enforcement is also apparent.
accompanying drawing explanation:
Fig. 1 is the monitored picture of turriform removing method.
There is the coil of strip of head turriform in Fig. 2.
Coil of strip after Fig. 3 turriform is eliminated.
Fig. 4 is the monitored picture of turriform removing method after change specification.
The monitored picture of Fig. 5 staggered floor removing method.
Fig. 6 produces the coil of strip of staggered floor.
Coil of strip after Fig. 7 staggered floor is eliminated.
Fig. 8 changes the monitored picture of staggered floor removing method after specification.
specific implementation method:
For clearly demonstrating the technical characterstic of this programme, below by two specific embodiment, and in conjunction with its accompanying drawing, this programme is set forth, and in production process, 1# roller and 2# roller work alone and are independent of each other, the condition of work of following examples is the work of 1# roller, and 2# roller stops.
Embodiment 1:
Fig. 1 is the monitored picture of turriform removing method
In figure, DS represents transmission side, and WS represents fore side.
In figure, (1) is current belt steel thickness, and unit is millimeter; (2) be the secondary setting value of pinch roll transmission side, fore side, the N of unit; (3) pinch roll transmission side or fore side pressure correction value, shows that the current thickness of red expression is in its corresponding thickness range, and correction value is effective, and display white represents that current thickness is not in its corresponding thickness range, and correction value is invalid; (4) be the scope that 1# pinch roll transmission side or fore side are divided according to thickness specification, unit is millimeter; (5) be that transmission side or fore side are comprehensive, be shown as pink colour, be expressed as final pinch roll transmission side or fore side pressure set points, synthetic setting (5)=secondary is set correction value (3) corresponding to (2)+thickness range.
Can find out by accompanying drawing 1, use in 1# pinch roll production process, current thickness is 2.85, belongs to (4) 2.6 to 3.1 millimeters of scopes of thickness specification, and the turriform problem of fore side has appearred in coil of strip, as shown in Figure 2,
Fig. 2 is the coil of strip that occurs head turriform
Be 20mm according to the size of turriform amount, directly correction value (3) within the scope of 2.6 of fore side to 3.1 millimeters is modified, be worth and be adjusted into 4000 by 0, finally 1# roller fore side force value is 35600N, eliminate within the scope of 2.6 to 3.1 millimeters and be with steel fore side turriform problem, as shown in Figure 3.
Fig. 3 is the coil of strip after turriform is eliminated
Belt steel thickness specification becomes 6.05mm afterwards.As shown in Figure 4:
Fig. 4 is the monitored picture of turriform removing method after change specification
Due to current rolling thickness specification (1) be 6.05 millimeters not within the scope of 2.6 to 3.1 millimeters, within the scope of 2.6 to 3.1 millimeters of fore sides, correction value (3) 4000 is invalid.Current current thickness specification (1) is 6.05 millimeters and is greater than within the scope of 4.1 millimeters at thickness specification limit (4), the therefore correction value (3) 0 in corresponding scope, and effectively, 1# roller fore side final pressure value is 53500N.
Embodiment 2:
The monitored picture of Fig. 5 staggered floor removing method
Can find out by accompanying drawing 5, use in 1# pinch roll production process, rolling thickness specification (1) is 5.82 millimeters, belong to thickness range (4) and occurred staggered floor problem being greater than coil of strip within the scope of 4.1 millimeters, as shown in Figure 6,
Fig. 6 is the coil of strip that produces staggered floor
Be 20mm according to the size of staggered floor amount, directly the correction value within the scope of 4.1 millimeters (3) that is greater than of transmission side and operation survey is modified, be worth by 0 and be adjusted into 5000,1# roller fore side and transmission side final pressure are 55300N, are greater than band steel staggered floor problem within the scope of 4.1 millimeters thereby eliminated.As shown in Figure 7,
Fig. 7 is the coil of strip after staggered floor is eliminated
Belt steel thickness specification becomes 7.18mm afterwards.As shown in Figure 8,
Fig. 8 is the monitored picture of staggered floor removing method after change specification
Production thickness specification (1) is 7.18 millimeters and is greater than within the scope of 4.1 millimeters at thickness specification limit (4), the therefore correction value (3) 5000 in corresponding scope, effectively.Synthetic setting (5)=secondary is set correction value (3) corresponding to (2)+thickness range, and 1# roller fore side and transmission side final pressure are 65700N.
When 2# coiling machine goes wrong, adjust 2# Withdrawal roll pressure correction value, implementation method is identical with 1# pinch roll operating procedure.
The present invention is not limited in the above-mentioned specific embodiment, and variation, remodeling, interpolation or replacement that those of ordinary skills make in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (1)
1. a hot-strip scroll optimization method, comprises the elimination of turriform and the elimination of staggered floor, it is characterized in that being:
The elimination of described turriform comprises the following steps:
(1) detect belt steel thickness H by checkout gear
t,
(2) determine that by detecting the fore side (WS) of the position of turriform at the transmission side of pinch roll (DS) or pinch roll appears in coil,
(3) determine by detection the maximum turriform height of the transmission side T that coil occurs
dor the maximum turriform height of fore side T
w,
(4) manually adjust pressure correction value at monitoring interface,
When turriform appears at the DS side of pinch roll, according to maximum turriform height T
dincrease the pressure correction value F of the DS side of pinch roll
d, the correction value size of adjustment is as follows,
T
D/mm F
D/N
10 2000
20 4000
30 6000
40 7000
50 8000
Or reduce the pressure correction value of the WS side of pinch roll, the correction value size of adjustment is as follows,
T
D/mm F
W/N
10 -2000
20 -4000
30 -6000
40 -7000
50 -8000
When turriform appears at the WS side of pinch roll, according to maximum turriform height T
wincrease the pressure correction value F of the WS side of pinch roll
w, the correction value size of adjustment is as follows,
T
W/mm F
W/N
10 2000
20 4000
30 6000
40 7000
50 8000
Or reduce the pressure correction value of the DS side of pinch roll, the correction value size of adjustment is as follows,
T
W/mm F
D/N
10 -2000
20 -4000
30 -6000
40 -7000
50 -8000
(5) review and validate the pressure correction value of adjusting in monitoring interface, with the belt steel thickness H detecting in step (1)
tthe belt steel thickness scope segmentation at place is corresponding;
The elimination of described staggered floor comprises the following steps,
(1) detect belt steel thickness H by checkout gear
c,
(2) determine by detection the maximum staggered floor amount C that coil occurs,
(3) at monitoring interface according to the size of maximum staggered floor amount C, adjust the pressure correction value F of the DS side of pinch roll and the WS side of pinch roll simultaneously
dand F
w, adjust correction value size as follows,
C/mm F
D/N F
W/N
10 2000 2000
20 5000 5000
30 9000 9000
40 13000 13000
50 18000 18000
(4) review and validate the pressure correction value of adjusting in monitoring interface, with the belt steel thickness H detecting in step (1)
cthe belt steel thickness scope segmentation at place is corresponding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210449947.1A CN102921739B (en) | 2012-11-12 | 2012-11-12 | Hot rolled strip steel coiling optimization method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210449947.1A CN102921739B (en) | 2012-11-12 | 2012-11-12 | Hot rolled strip steel coiling optimization method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102921739A CN102921739A (en) | 2013-02-13 |
| CN102921739B true CN102921739B (en) | 2014-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210449947.1A Expired - Fee Related CN102921739B (en) | 2012-11-12 | 2012-11-12 | Hot rolled strip steel coiling optimization method |
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| CN104249091B (en) * | 2013-06-28 | 2017-08-25 | 宝山钢铁股份有限公司 | A kind of control method of orientation silicon steel continuous annealing unit coiling tension |
| CN105817485B (en) * | 2015-01-07 | 2017-10-31 | 宝山钢铁股份有限公司 | A kind of control method to hot rolling reeling scratch defect |
| CN106622837B (en) * | 2016-11-25 | 2019-06-04 | 北京首钢股份有限公司 | A kind of control method of silicon-steel magnesium oxide coating telescope |
| CN106583497A (en) * | 2016-12-13 | 2017-04-26 | 山东钢铁股份有限公司 | Control method for pressure of clamping and conveying roller of strip steel coiler |
| CN107570533B (en) * | 2017-08-18 | 2019-03-01 | 北京首钢自动化信息技术有限公司 | It is a kind of for eliminating the device for controlling dynamically and its method of coil of strip tower |
| CN111451291B (en) * | 2020-04-08 | 2021-04-02 | 鞍钢股份有限公司 | Method for improving coil shape quality of hot-rolled strip steel |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09327715A (en) * | 1996-06-12 | 1997-12-22 | Nisshin Steel Co Ltd | Strip tension control method in steckel mill and device therefor |
| CN101452297B (en) * | 2007-11-29 | 2010-12-01 | 宝山钢铁股份有限公司 | Withdrawal roll pressure control method for coiler |
| CN201257445Y (en) * | 2008-09-19 | 2009-06-17 | 武汉钢铁(集团)公司 | Band steel pinch-roll control device with position deviation eliminating function |
| KR101134922B1 (en) * | 2009-04-02 | 2012-04-17 | 주식회사 포스코 | Shape controller and shape method for steel plate of hot rolling process |
| CN102641903B (en) * | 2011-02-16 | 2014-10-01 | 宝山钢铁股份有限公司 | Steckel mill rolled piece head-and-tail deviation control method |
| 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 |
| CN102671958A (en) * | 2012-05-04 | 2012-09-19 | 本钢板材股份有限公司 | Method for controlling tail of band steel by using pinch roller |
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Granted publication date: 20140709 Termination date: 20181112 |
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