CN102989792B - Calibration method for clearance between rolls of hot-rolling vertical rolls - Google Patents
Calibration method for clearance between rolls of hot-rolling vertical rolls Download PDFInfo
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- CN102989792B CN102989792B CN201110274492.XA CN201110274492A CN102989792B CN 102989792 B CN102989792 B CN 102989792B CN 201110274492 A CN201110274492 A CN 201110274492A CN 102989792 B CN102989792 B CN 102989792B
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Abstract
The invention relates to a precision calibration method for clearance between rolls of hot-rolling vertical rolls, which mainly solves the technical problem that strip steel is deficient in quality because verticality and alignment to calibration of vertical rolls are not considered in current methods. The technical scheme is that the calibration method for clearance between rolls of hot-rolling vertical rolls comprises the steps of: 1, finding a rolling center line and marking; 2, the distance from the marker line to the rolling center line = the distance from the rolling center line to the roller center line (as |ZB|) + the distance from the roller center line to the marker line; 3, hitting apertures on both sides of the vertical rolls to marked positions, wherein a roll block is inside a marking line and aligned with the marking line; 4, measuring the distance from the lower ends on both sides of the vertical rolls to the rolling center line, and marking the measuring point as a point A, the radius of the rolls as R/2 and the distances from A to a vertical roll operating side and from A to a transmission side as |OA| and |DA|; 5, comparing the measured value |OA|+R/2 on the operating side with |ZB|, wherein if the difference is in a precision range, the verticality is good, and if the difference is not in the precision range, the clearance between rolls on the operating side is adjusted so that the difference is in the precision control range; 6, adjusting the clearance between rolls on the transmission side by the adjusting method in the step 5; and 7, measuring the total aperture of the vertical rolls, inputting the measured values and calibrating the clearance between rolls of vertical rolls after adjusting the verticality and alignment.
Description
Technical field
The present invention relates to a kind of scaling method of roller gap, particularly a kind of method for precisely marking of Vertical Rolling roll gap.
Background technology
The width accuracy of hot-strip is the important indicator of hot-strip product quality always.The height of thirty years of age roller gap precision is the significant effects factor that directly affects hot-rolled finished product strip width precision.The height of thirty years of age roller gap precision is mainly to be decided by the method for demarcating, and still, former edger roll scaling method can not ensure that the precision of roll gap is very high, and method and the step of its demarcation are as follows: edger roll aperture is gone to appropriate location 1.; 2. measure the lower end opening value of edger roll; 3. the opening value of input measurement on picture, demarcates and finishes.Edger roll roll gap precision the Long-term Effect first-time qualification rate and the quality cost loss of hot-rolled product width.
For the demarcation of edger roll, only paid attention in the past the demarcation of edger roll aperture, never considered perpendicularity and the alignment degree of the one-sided roller of edger roll, and the perpendicularity of the one-sided roller of edger roll can directly affect field equipment state, the alignment degree of the one-sided roller of edger roll has a significant impact the centering with steel, good centering can prevent the sideslip with steel, otherwise can affect the first-time qualification rate of hot-rolled product width and cause quality cost loss.
Through retrieval, Chinese Patent Application No. is the scaling method that CN201010294893.7 has issued a kind of vertical rolling centerline of universal mill, the scaling method of a kind of vertical rolling centerline of universal mill of this disclosure of the invention, in the time producing the shaped steel of the asymmetric sections such as heavy rail, use the method can effectively reduce the rail quantity of scrapping because adjusting universal mill.The method is demarcated as the vertical rolling centerline of this universal mill by both sides edger roll being pressed respectively to vertical center line between this both sides edger roll obtaining after the demarcation face of horizontal roller both sides; Timing signal, the stressed size according to this both sides edger roll when the actual rolling of this universal mill makes the described stressed less edge-on roller horizontal-shift of vertical rolling center alignment.This invention can be dwindled existing horizontal offset distance between the vertical center line while even eliminating the vertical center line of timing signal and actual rolling by its technological means, thereby improves rolling accuracy, reduces the rail quantity of scrapping because adjusting universal mill.This invention is applicable to produce the shaped steel of the asymmetric sections such as heavy rail.And the scaling method that we propose has following characteristics: not 1, the demarcation to center line, but demarcation to roll gap; 2, propose first opposite roller and carried out the demarcation of alignment degree; 3, propose first opposite roller and carried out the demarcation of perpendicularity.
Summary of the invention
The object of the invention is: a kind of method for precisely marking that is applied to Vertical Rolling roll gap is provided, has mainly solved existing scaling method and do not consider that perpendicularity and the demarcation of alignment degree opposite roller affect and the technical problem of generation strip quality defect.Its major technique thinking is: employing be that four hydraulic cylinders of opposite roller are respectively demarcated separately; when a side misaligns or when out of plumb; can adjust this side separately; thereby not only ensure the alignment degree of both sides but also ensured one-sided perpendicularity, and be conducive to the equipment of keeping the scene intact and the effect that prevents strip running deviation.Utilize can directly eliminate the effects of the act the to greatest extent impact of greatest factor of hot-rolled finished product strip width precision of the method, improve the first-time qualification rate of hot-rolled product width and reduce quality cost loss.
For reaching above object, technical scheme of the present invention is: a kind of scaling method of Vertical Rolling roll gap, comprises the following steps:
1, find out rolling centerline at the upper and lower side of Vertical Rolling equipment, and carry out mark;
2, distance (be ┃ ZB the ┃)+roller central line of mark line to the distance=rolling centerline between rolling centerline to roller central line is to the distance of mark line;
3, edger roll both sides aperture is got to the position of mark, made roll block in mark line inboard and align with mark line, at this moment align in edger roll upper end;
4, measure respectively the distance of lower end, edger roll both sides to lower end rolling centerline, and measurement point is designated as to A point, and the radius that roll is provided according to the roller diameter providing is R/2, and rolling centerline A is designated as respectively to ┃ OA ┃ and ┃ DA ┃ to the distance of edger roll fore side and transmission side;
5, use measured value ┃ OA ┃+R/2 and the ┃ ZB ┃ comparison of fore side, if difference is in precision control range, think that perpendicularity is good, if difference is beyond precision control range, adjust fore side roll gap, make difference in precision control range, ensure that perpendicularity is good, fore side adjustment finishes;
6,, according to the method for adjustment of step 5, with measured value ┃ DA ┃+R/2 and the ┃ ZB ┃ comparison of transmission side, adjust transmission side roll gap;
7, after perpendicularity and alignment degree are adjusted, measure the total aperture of edger roll, input measurement value, demarcates edger roll roll gap, and whole edger roll is demarcated and finished.
Conventionally precision control range is ± 3mm.
The invention has the beneficial effects as follows: the perpendicularity by opposite roller and alignment degree are considered to come opposite roller simultaneously and carried out Accurate Calibration; not only the equipment of keeping the scene intact is had to effect; and eliminate because of the functions of the equipments accurately not high abnormal problem of hot-rolled finished product strip width producing that comes into operation; simultaneously; by the adjustment of opposite roller alignment degree, also eliminate the problem of strip running deviation.Be embodied in: 1, adjust by the alignment degree of the method opposite roller; 2, the perpendicularity of opposite roller equipment is adjusted first; 3, the method has the function that helps the equipment of keeping the scene intact.
The present invention is compared with existing other technology, not only using the alignment degree of edger roll as a part of demarcating, and the pith of demarcating using the perpendicularity of edger roll as edger roll, the managerial skills of equipment are improved, significantly improve the stated accuracy of edger roll roll gap, not only effectively raise Hot Strip Width precision index, also reduced to a certain extent because of the amount of reprocessing that width causes extremely, remaining material and tail volume.And this scaling method has novelty, simple, safety and improves the feature of equipment Management Level.
Brief description of the drawings
Fig. 1 is the concrete calibration position schematic diagram of the present invention.
Fig. 2 is programme-control block diagram of the present invention.
1-edger roll in figure, 2-roller central line, 3-rolling centerline, 4-roll block, 5-mark line, 6-fore side, 7-transmission side.
Detailed description of the invention
The feature and the needs that produce line according to hot rolling, with reference to Fig. 1,2, a kind of scaling method of Vertical Rolling roll gap, comprises the following steps:
1, be first the preparation of demarcation condition, find out the rolling centerline 3 of edger roll 1 upper and lower side and carry out mark, two mark lines 5 are done respectively in transmission on the slideway of edger roll upper end and operation both sides, and this mark line 5 equates and known to the distance of rolling centerline 3 on edger roll;
2, the demarcation of opposite roller 1 perpendicularity, the roll block 4 of edger roll 1 upper end, both sides is alignd with mark line 5 inboards, can make like this edger roll aperture try one's best urine in the measurement of edger roll lower end aperture, at this moment edger roll 1 both sides, upper end are centerings, our the known rod block 4 that rolls is standard components, therefore rolling centerline 3 immobilizes and known to the distance of roller central line 2, is 1088mm apart from ┃ ZB ┃;
3, opposite roller lower end is measured: we know that the diameter R of edger roll is known and accurately, measure respectively the distance of lower end, edger roll both sides to rolling centerline 3, and measurement point is designated as to A point, and calculate radius R/2 of roll, rolling centerline A point is designated as respectively to ┃ OA ┃ and ┃ DA ┃ to the distance of fore side 6 and transmission side 7, with measured value ┃ OA ┃+R/2 and the 1088mm comparison of fore side, if difference is in ± 3mm, think that perpendicularity is good, if difference is beyond ± 3mm, adjust fore side roll gap, make difference in ± 3mm, guarantee perpendicularity is good, transmission side operation in like manner can obtain,
4, after perpendicularity and alignment degree are adjusted, measure the total aperture of edger roll, demarcate edger roll roll gap in picture input measurement value, the whole demarcation of edger roll finishes.
After changing edger roll, concrete demarcating steps is as follows:
1) new edger roll 1 has been changed end, and edger roll control mode is in manual mode;
2) manual edger roll 1 aperture is gone to mark line 5 positions, the rod block 4 that rolls of edger roll 1 upper end, both sides is alignd with mark line 5 inboards, before we have calculated and have learnt that edger roll upper end roller central line 2 is 1088mm to the distance ┃ ZB ┃ of rolling centerline 3;
3), for new edger roll, the diameter in effective roller footpath of our known edger roll lower end is: R=1072mm, i.e. R/2=536mm.Find out the rolling centerline 3 of edger roll lower end, and carry out mark;
4) measure the distance ┃ OA ┃ of fore side edger roll lower end working face to step 2 mark position, reading is 553mm, in be controlled at ± 3mm of our precision, and 553+R/2=553+536=1089mm and 1088mm deviation are 1mm, therefore, do not need opposite roller fore side to adjust, the perpendicularity of the edge-on roller of description operation and centering are all good;
5) measure equally the distance ┃ DA ┃ of transmission side edger roll lower end working face to step 2 mark position, reading is 560mm, in be controlled at ± 3mm of same accuracy, and the deviation of 560+R/2=560+536=1096mm and 1088mm is 8mm, therefore, need opposite roller transmission side edger roll to adjust, also perpendicularity and the alignment degree of the edge-on roller of description operation is bad for this, the side-play amount of demarcating by change is adjusted the aperture of edger roll, again measure transmission side aperture demarcating after side-play amount increases 6mm, reading is 554mm, now, the deviation of 554+R/2=554+536=1090mm and 1088mm is 2mm, meet required precision, therefore, perpendicularity and alignment degree that transmission side edger roll is described also all reach requirement,
6) measuring the total aperture of edger roll is 1108mm, demarcate edger roll at picture input measurement value 1108mm, again adjust edger roll aperture to the position that shows 1000mm, again measuring edger roll aperture is 998mm, we require in ± 3mm the deviation of aperture, therefore, demarcation meets the demands, and the whole demarcation of edger roll finishes;
7) record of demarcating is as follows:
Above-mentioned demarcation is only that a kind of roller of the present invention footpath edger roll is illustrated, and range of application of the present invention is not limited to this, and the roller gap that also can be used for similar edger roll is demarcated.
Claims (2)
1. a scaling method for Vertical Rolling roll gap, is characterized in that comprising the following steps:
A, find out rolling centerline at the upper and lower side of Vertical Rolling equipment, and carry out mark;
B, the distance+roller central line of mark line to the distance=rolling centerline between rolling centerline to roller central line are to the distance of mark line, and described rolling centerline is ┃ ZB ┃ to the distance of roller central line;
C, edger roll both sides aperture is got to the position of mark, made roll block inboard and align with mark line at mark line, at this moment align in edger roll upper end;
D, measure the distance of lower end, edger roll both sides to lower end rolling centerline respectively, and measurement point is designated as to A point, and the radius that roll is provided according to the roller diameter providing is R/2, and rolling centerline A is designated as respectively to ┃ OA ┃ and ┃ DA ┃ to the distance of edger roll fore side and transmission side;
Measured value ┃ OA ┃+R/2 and the ┃ ZB ┃ comparison of e, use fore side, if difference is in precision control range, think that perpendicularity is good, if difference is beyond precision control range, adjust fore side roll gap, make difference in precision control range, ensure that perpendicularity is good, fore side adjustment finishes;
F, according to the method for adjustment of step e, with measured value ┃ DA ┃+R/2 and the ┃ ZB ┃ comparison of transmission side, adjustment transmission side roll gap;
After g, perpendicularity and alignment degree are adjusted, measure the total aperture of edger roll, input measurement value, demarcates edger roll roll gap, and whole edger roll is demarcated and finished.
2. the scaling method of a kind of Vertical Rolling roll gap according to claim 1, is characterized in that described precision control range is ± 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110274492.XA CN102989792B (en) | 2011-09-16 | 2011-09-16 | Calibration method for clearance between rolls of hot-rolling vertical rolls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110274492.XA CN102989792B (en) | 2011-09-16 | 2011-09-16 | Calibration method for clearance between rolls of hot-rolling vertical rolls |
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| CN102989792A CN102989792A (en) | 2013-03-27 |
| CN102989792B true CN102989792B (en) | 2014-07-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103316925B (en) * | 2013-06-07 | 2016-10-19 | 鞍钢股份有限公司 | A kind of scaling method of roughing mill vertical roll centrage |
| CN103433291B (en) * | 2013-07-10 | 2015-05-06 | 鞍钢股份有限公司 | Measurement and regulation method for rough rolling working roll gap deviation |
| CN104942024B (en) * | 2015-06-29 | 2016-09-21 | 山东钢铁股份有限公司 | Hot continuous rolling produces edger roll short stroke control method before line finishing mill |
| CN106040753B (en) * | 2016-06-21 | 2018-06-22 | 首钢京唐钢铁联合有限责任公司 | A kind of method of edger roll roll gap calibration |
| CN107695110B (en) * | 2017-09-08 | 2019-02-01 | 张家港浦项不锈钢有限公司 | Lead the method with the spacing of edger roll and centering in a kind of Fast Calibration hot rolling mill side |
| CN108284136B (en) * | 2018-01-19 | 2019-09-03 | 山东钢铁集团日照有限公司 | A method of improving finishing mill roll gap stated accuracy |
| CN108637022B (en) * | 2018-05-21 | 2020-05-19 | 山东钢铁集团日照有限公司 | Method for accurately calibrating rough rolling horizontal roll gap |
| CN109238150B (en) * | 2018-12-04 | 2024-01-30 | 马鞍山钢铁股份有限公司 | Vertical roll centering distance measuring device and measuring method of vertical roll mill |
| CN110153203A (en) * | 2019-05-29 | 2019-08-23 | 北京首钢股份有限公司 | A kind of edger roll scaling method |
| CN111024002B (en) * | 2019-12-30 | 2021-04-20 | 新疆八一钢铁股份有限公司 | Method for detecting alignment degree of vertical roller by using laser infrared level meter |
| DE102020213243A1 (en) | 2020-02-06 | 2021-08-12 | Sms Group Gmbh | Method and calibration of vertical rolls of a vertical rolling stand as well as calibration arrangement for carrying out the method |
| CN113732061B (en) * | 2020-05-29 | 2023-09-05 | 上海梅山钢铁股份有限公司 | Calibration device and calibration method for coiling position roller system of hot coiling box |
| CN111842509B (en) * | 2020-06-08 | 2022-04-01 | 唐山钢铁集团有限责任公司 | Calibration method of 1700mm hot rolling line rough rolling vertical roll |
| CN111842510B (en) * | 2020-07-07 | 2022-03-18 | 宝钢湛江钢铁有限公司 | Automatic calibration method for vertical rolling mill |
| CN112191694B (en) * | 2020-11-04 | 2024-02-09 | 宝信软件(安徽)股份有限公司 | Self-adaptive calibration method for roll gap of hot rolling leveling machine |
| CN113319131B (en) * | 2021-06-02 | 2023-02-28 | 北京首钢股份有限公司 | Vertical roll calibration method and device and electronic equipment |
| CN114147073B (en) * | 2021-11-03 | 2024-02-02 | 天津市新宇彩板有限公司 | Zero calibration control method and system for oil pressure sensor |
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| US5775154A (en) * | 1995-01-07 | 1998-07-07 | Sms Schloemann-Siemag Aktiengesellschaft | Method for adjusting a roll gap |
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| CN102107217A (en) * | 2009-12-25 | 2011-06-29 | 鞍钢股份有限公司 | Method for removing calibration mark of working roller of rolling mill |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59153509A (en) * | 1983-02-18 | 1984-09-01 | Nippon Steel Corp | Detection of roll gap in vertical rolling mill |
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| US3817068A (en) * | 1972-05-20 | 1974-06-18 | F Meyer | Roll gap and gap error monitoring device |
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| US5775154A (en) * | 1995-01-07 | 1998-07-07 | Sms Schloemann-Siemag Aktiengesellschaft | Method for adjusting a roll gap |
| CN102107217A (en) * | 2009-12-25 | 2011-06-29 | 鞍钢股份有限公司 | Method for removing calibration mark of working roller of rolling mill |
| CN101947559A (en) * | 2010-09-28 | 2011-01-19 | 攀钢集团钢铁钒钛股份有限公司 | Method for calibrating vertical rolling centerline of universal mill |
Non-Patent Citations (1)
| Title |
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| JP昭59-153509A 1984.09.01 |
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