CN102921739A - Hot rolled strip steel coiling optimization method - Google Patents
Hot rolled strip steel coiling optimization method Download PDFInfo
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- CN102921739A CN102921739A CN2012104499471A CN201210449947A CN102921739A CN 102921739 A CN102921739 A CN 102921739A CN 2012104499471 A CN2012104499471 A CN 2012104499471A CN 201210449947 A CN201210449947 A CN 201210449947A CN 102921739 A CN102921739 A CN 102921739A
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- correction value
- turriform
- pinch roll
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- 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 was produced, pinch roll was the key equipment that affects steel coil form quality amount, and along with the prolongation of rolling time, pinch roll both sides wear extent was uneven, the pinch roll levelness changes, and causes being with the inclined to one side transmission side of steel or fore side, causes steel roll tower shaped after equipment was installed; Withdrawal roll pressure is set less than normal, and effectively the clamping band steel causes being with steel to move about, thereby causes band steel staggered floor problem.
Turriform refers to that the 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 causes owing to being with steel head to depart from behind rolling centerline or the 2-3 circle to depart from from rolling centerline.Tailing column causes owing to being with the steel afterbody to depart from behind rolling centerline or the 2-3 circle to depart from from rolling centerline.Staggered floor is uneven between roll bending layer and layer or multilayer and the multilayer.
Turriform volume and staggered floor form main cause:
(1) band steel camber, wedge shape, unusual convexity and wave, the material hardness turriform that all easily produces such as large.
(2) threading time band steel misalignment guide plate center enters coiling machine.
(3) centralising device is malfunctioning, thus when rolling line moves correctly feedback signal adjust and produce turriform.
(4) large fluctuation appears in coiling tension.
Summary of the invention:
The present invention be directed to the scroll quality problems that occur in the 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 are divided according to the thickness specification the 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 may further comprise the steps,
(1) detects belt steel thickness H by checkout gear
t,
(2) determine that by detecting coil the position of turriform occurs at the transmission side (DS) of pinch roll or the fore side (WS) of pinch roll,
(3) by detecting the maximum turriform height of the transmission side T that determines that coil occurs
DThe perhaps maximum turriform height of fore side T
W,
(4) manually adjust the pressure correction value at monitoring interface,
When turriform appears at the 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
Perhaps 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 the 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
Perhaps 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 the monitoring interface, with the belt steel thickness H that detects in the step (1)
tThe belt steel thickness scope segmentation at place is corresponding;
The elimination of staggered floor may further comprise the steps,
(1) detects belt steel thickness H by checkout gear
c,
(2) the maximum staggered floor amount C that occurs by detecting definite coil,
(3) in the size of monitoring interface according to maximum staggered floor amount C, adjust simultaneously the pressure correction value F of DS side and WS side
DAnd F
W, adjust the 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 the monitoring interface, with the belt steel thickness H that detects in the 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 made amendment.Be with steel the transmission side turriform to occur, according to the turriform amount, increase the pressure correction value in the corresponding thickness range of pinch roll transmission side or reduce the interior pressure correction value of the corresponding thickness range of pinch roll fore side; Be with steel the fore side turriform to occur, according to the turriform amount, increase the pressure correction value in the corresponding thickness range of pinch roll fore side or reduce the interior pressure correction value of the corresponding thickness range of pinch roll transmission side; As be with steel the staggered floor problem to occur, increase simultaneously the pressure correction value in the transmission side thickness range corresponding to fore side.
The pressure correction value is adjusted the corresponding relation of size and maximum turriform amount or maximum staggered floor amount, as described in above-mentioned step.
The maximum turriform amount that detects in the above-mentioned steps is between two adjacent maximum turriform amounts the 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 that detects in the above-mentioned steps is between two adjacent maximum staggered floor amounts the 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 the monitoring interface, the secondary setting value, thickness range, the Show Color of pressure integrated value and correction value is different, the 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 the scroll quality problems such as steel roll tower shaped, staggered floor in the production of band steel, can avoid simultaneously because the frequent adjustment that varied in thickness causes, thereby realize the continuous production of different-thickness gauge strip steel.This shows, the present invention has substantive distinguishing features, and the beneficial effect of its enforcement also is apparent.
Description of drawings:
Fig. 1 is the monitored picture of turriform removing method.
The coil of strip of head turriform appears in Fig. 2.
Coil of strip after Fig. 3 turriform is eliminated.
Fig. 4 is the monitored picture of turriform removing method after the 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 the 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 the 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 the 2# roller stops.
Embodiment 1:
Fig. 1 is the monitored picture of turriform removing method
Among the figure, DS represents transmission side, and WS represents fore side.
(1) is current belt steel thickness among the figure, 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 show the current thickness of red expression in its corresponding thickness range, and correction value is effective, and display white represents current thickness 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 the 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 the 1# pinch roll production process, current thickness is 2.85, belongs to (4) 2.6 to 3.1 millimeters 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 the head turriform occurs
Size according to the turriform amount is 20mm, directly correction value (3) in 2.6 to 3.1 millimeters scopes of fore side is made amendment, its value is adjusted into 4000 by 0, final 1# roller fore side force value is 35600N, eliminated band steel fore side turriform problem in 2.6 to 3.1 millimeters scopes, as shown in Figure 3.
Fig. 3 is the coil of strip after turriform is eliminated
The belt steel thickness specification becomes 6.05mm afterwards.As shown in Figure 4:
Fig. 4 is the monitored picture of turriform removing method after the change specification
Since at present rolling thickness specification (1) be 6.05 millimeters not in 2.6 to 3.1 millimeters scopes, correction value (3) 4000 is invalid in 2.6 to 3.1 millimeters scopes of fore side.Present current thickness specification (1) be 6.05 millimeters thickness specification limit (4) greater than 4.1 millimeters scopes in, the therefore correction value (3) 0 in the corresponding scope, 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 the 1# pinch roll production process, rolling thickness specification (1) is 5.82 millimeters, belong to thickness range (4) coil of strip in greater than 4.1 millimeters scopes and the staggered floor problem occurred, as shown in Figure 6,
Fig. 6 is for producing the coil of strip of staggered floor
Size according to the staggered floor amount is 20mm, direct making amendment greater than correction value (3) in 4.1 millimeters scopes to transmission side and operation survey, its value is adjusted into 5000 by 0,1# roller fore side and transmission side final pressure are 55300N, thereby have eliminated greater than band steel staggered floor problem in 4.1 millimeters scopes.As shown in Figure 7,
Fig. 7 is the coil of strip after staggered floor is eliminated
The 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 the change specification
Produce thickness specification (1) and be 7.18 millimeters thickness specification limit (4) greater than 4.1 millimeters scopes in, the therefore correction value (3) 5000 in the 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 the 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 the variation that those of ordinary skills make in essential scope of the present invention, remodeling, interpolation or replacement 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 may further comprise the steps:
(1) detects belt steel thickness H by checkout gear
t,
(2) determine that by detecting coil the position of turriform occurs at the transmission side (DS) of pinch roll or the fore side (WS) of pinch roll,
(3) by detecting the maximum turriform height of the transmission side T that determines that coil occurs
DThe perhaps maximum turriform height of fore side T
W,
(4) manually adjust the pressure correction value at monitoring interface,
When turriform appears at the 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
Perhaps 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 the 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
Perhaps 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 the monitoring interface, with the belt steel thickness H that detects in the step (1)
tThe belt steel thickness scope segmentation at place is corresponding;
The elimination of described staggered floor may further comprise the steps,
(1) detects belt steel thickness H by checkout gear
c,
(2) the maximum staggered floor amount C that occurs by detecting definite coil,
(3) in the size of monitoring interface according to maximum staggered floor amount C, adjust simultaneously the pressure correction value F of DS side and WS side
DAnd F
W, adjust the 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 the monitoring interface, with the belt steel thickness H that detects in the 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210449947.1A CN102921739B (en) | 2012-11-12 | 2012-11-12 | Hot rolled strip steel coiling optimization method |
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| CN102921739A true CN102921739A (en) | 2013-02-13 |
| CN102921739B CN102921739B (en) | 2014-07-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104249091A (en) * | 2013-06-28 | 2014-12-31 | 宝山钢铁股份有限公司 | Control method of coiling tension of oriented silicon steel continuous annealing unit |
| CN105817485A (en) * | 2015-01-07 | 2016-08-03 | 宝山钢铁股份有限公司 | Method for controlling hot rolling coiling scratching defects |
| 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 |
| CN106622837A (en) * | 2016-11-25 | 2017-05-10 | 北京首钢股份有限公司 | Control method for telescope of silicon-steel magnesium oxide coating |
| CN107570533A (en) * | 2017-08-18 | 2018-01-12 | 北京首钢自动化信息技术有限公司 | A kind of device for controlling dynamically and its method for being used to eliminate coil of strip tower |
| CN111451291A (en) * | 2020-04-08 | 2020-07-28 | 鞍钢股份有限公司 | Method for improving coil shape quality of hot-rolled strip steel |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104249091A (en) * | 2013-06-28 | 2014-12-31 | 宝山钢铁股份有限公司 | Control method of coiling tension of oriented silicon steel continuous annealing unit |
| 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 |
| CN105817485A (en) * | 2015-01-07 | 2016-08-03 | 宝山钢铁股份有限公司 | Method for controlling hot rolling coiling scratching defects |
| 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 |
| CN106622837A (en) * | 2016-11-25 | 2017-05-10 | 北京首钢股份有限公司 | Control method for telescope of silicon-steel magnesium oxide coating |
| 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 |
| CN107570533A (en) * | 2017-08-18 | 2018-01-12 | 北京首钢自动化信息技术有限公司 | A kind of device for controlling dynamically and its method for being used to eliminate coil of strip tower |
| CN111451291A (en) * | 2020-04-08 | 2020-07-28 | 鞍钢股份有限公司 | Method for improving coil shape quality of hot-rolled strip steel |
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