CN105177271A - Carbon sleeve roller protrusion judging and removing method - Google Patents
Carbon sleeve roller protrusion judging and removing method Download PDFInfo
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- CN105177271A CN105177271A CN201510626929.XA CN201510626929A CN105177271A CN 105177271 A CN105177271 A CN 105177271A CN 201510626929 A CN201510626929 A CN 201510626929A CN 105177271 A CN105177271 A CN 105177271A
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Abstract
The invention provides a carbon sleeve roller protrusion judging and removing method. The method comprises the following steps that firstly, when pits are formed in strip steel, the distance l1 between the pits is measured through a straight ruler; secondly, all carbon sleeve rollers are divided into an N1 set and an N2 set to be checked according to a half method; thirdly, the linear velocity of the N1 set of carbon sleeve rollers is changed, and the linear velocity of the N2 set of carbon sleeve rollers is kept unchangeable, wherein if the distance between the pits of the strip steel is changed, it is judged that protrusions exist in the N1 set of carbon sleeve rollers, and if the distance between the pits of the strip steel is not changed, it is judged that the protrusions exist on the N2 set of carbon sleeve rollers; fourthly, the judged N1 or N2 set of carbon sleeve rollers with the protrusions are further checked according to the second step and the third step till the carbon sleeve rollers with the protrusions are checked; and fifthly, the linear velocity of the carbon sleeve rollers with the protrusions is changed, the rotating speed of other carbon sleeve rollers is kept unchangeable, and the carbon sleeve rollers without the protrusions run. The carbon sleeve roller protrusion judging and removing method has the beneficial effects that firstly, production is not affected, and a large number of economic losses caused by shutdown for maintenance can be reduced; secondly, operation is simple and fast, and operators can be competent for the job through the simple training; and thirdly, the service life of the carbon sleeve rollers can be greatly prolonged.
Description
Technical field: a kind of method that the present invention relates to its carbon cover roller dross online treatment in silicon steel continuous annealing production line, particularly a kind of carbon cover roller dross judges and minimizing technology.
Technical background: in silicon steel continuous annealing production line, the phenomenon of carbon cover roller dross is commonplace, the product defectses such as pit are caused because carbon cover roller dross can scratch belt steel surface, so once dross, just must remove fast, otherwise dross can the more long quality having a strong impact on more greatly product, finally forces production line to stop production.The method that existing judgement and the dross removed on carbon cover roller check by root after mainly taking continuous annealing furnace cooling blowing out, the deficiency that this kind of method in use exists is: 1, length consuming time, large to Influence of production, because after going wrong, just need by continuous annealing furnace blowing out, and the long time cooling such as to need, operator just can enter in stove and carry out pinpointing the problems by root inspection and processing, this is length consuming time not only, and workload is large, and (in stove, carbon cover roller quantity is a lot, general more than 80), serious to Influence of production; 2, the work-ing life of carbon cover roller is short, and financial loss is large, because once carbon cover roller dross, just need be changed, make production cost high.
Summary of the invention: the object of the invention is to, for the method in use above shortcomings that existing carbon cover roller dross judges and removes, and the dross judgement of a kind of carbon cover roller and minimizing technology are proposed, it can judge the carbon cover roller of dross online fast and dross be removed, lower the temperature without the need to blowing out, on continuous seepage without impact, have consuming time less, fast, cost low and on carbon cover roller work-ing life without impact advantage.
Can realize object of the present invention by following technical proposals, a kind of carbon cover roller dross judges and minimizing technology, it is characterized in that: carry out as follows
One, when being with steel to have pit, stopping at continuous annealing unit outlet section, measuring pit spacing l1 with ruler;
Two, N1, N2 group is divided into investigate by one-half method on all carbon cover rollers;
Three, the linear velocity of N1 group carbon cover roller changed, the linear velocity of N2 group carbon cover roller remains unchanged, if band steel pit spacing changes, then judges that dross appears in the carbon cover roller in N1 group; If band steel pit spacing does not change, then can judge that dross appears in the carbon cover roller in N2 group;
Four, will judge that the carbon cover roller group N1 or N2 occurring dross investigates further by two, three steps, until find the carbon cover roller of dross;
Five, the linear velocity of dross carbon cover roller changed, the rotating speed of other carbon cover roller remains unchanged, and allows it run, and by carbon, the dross of overlapping on roller grinds off in the friction that band steel is produced by the velocity contrast between carbon cover roller.
In step 5, the interval that the linear velocity of dross carbon cover roller overlaps positive and negative 3/5ths of roller linear velocity by other carbon is determined.
The principle of this judgement and minimizing technology institute foundation is: when dross appears in carbon cover roller, belt steel surface there will be pit, and the distance between pit is isometric, because the speed of band steel is identical with the linear velocity that carbon overlaps roller; When changing the dross carbon cover rotating speed of roller, the speed with steel still remains unchanged, distance then between the pit that occurs of belt steel surface can change, according to the change of the spacing of pit, namely available exclusive method finds out the carbon cover roller of dross in numerous carbon cover roller; When after the carbon cover roller determining dross, the linear velocity of carbon being overlapped roller is brought up to and is greater than the band travelling speed of steel and the speed with steel and still remains unchanged and allow it run, a velocity contrast and friction will be produced between such carbon cover roller and band steel, carbon can be ground off the dross of overlapping on roller by this friction.
Effect of the present invention is: 1, on the impact of production nothing, can save in a large number because of financial loss that shutdown maintenance causes, because when there is dross, present method can have been tied knurl to which root carbon cover roller in continuous annealing production line online and to have judged and dross is worn, without the need to shutting down by manually going to search and keep in repair, can realize by means of only the rotating speed changing carbon cover roller; 2, simple and quick, operator namely can be competent at a job by simple training, generally can judge dross carbon cover roller in half an hour, and can its dross worn fast, if by the accumulation of for some time, when pit appears in belt steel surface, rule of thumb can judge the comparatively zonule that dross carbon cover roller occurs, then investigate fast with one-half method; 3, the work-ing life of carbon cover roller can significantly be improved, one, by removing the dross on carbon cover roller, make carbon overlap roller can continue to use, thus extend its work-ing life, its two, judge easy dross region by experience accumulation, in time the in-furnace temperature, atmosphere etc. in this region are regulated, make it be unfavorable for dross, the frequency of dross can be reduced, thus extend the work-ing life of carbon cover roller, make existing carbon overlap roller and extend to 8 months the work-ing life of 4 months, can be enterprise and save a large amount of production costs.
Embodiment:
Embodiment 1, the band steel on continuous annealing furnace production line runs with 90 ms/min of speed, and the linear velocity of carbon cover roller is also 90 ms/min.Occur pit at the belt steel surface run, this phenomenon shows, existing carbon cover roller dross; Distance L between measuring tape steel surface crater is 0.942 meter.Have 80 carbon cover rollers in stove, according to one-half method, be divided into two groups of N1, N2 of 40.The linear velocity of N1 is adjusted to 150 ms/min, and the linear velocity of N2 is still 90 ms/min, after operation, and the distance L1 between measuring tape steel surface crater is 0.56 meter, can confirm the carbon cover roller having dross in N1.Carry out grouping N11, N12 to the carbon cover roller of N1 group by one-half method again, by the speed setting of N11 to 150 ms/min, the linear velocity of other carbon cover roller is still 90 ms/min; After operation, the distance L11 between measuring tape steel surface crater is 0.56 meter, can confirm the carbon cover roller having dross in N11; By that analogy, until find out the carbon cover roller of dross.The linear velocity of dross carbon cover roller is kept 150 ms/min constant, the linear velocity of other carbon cover roller is identical with the speed of band steel 90 ms/min, with this kind of setting operation 30 minutes, the dross elimination on carbon cover roller.
Embodiment 2, the band steel on continuous annealing furnace production line runs with 120 ms/min of speed, and the linear velocity of carbon cover roller is also 120 ms/min.Occur pit at the belt steel surface run, this phenomenon shows, existing carbon cover roller dross; Distance L between measuring tape steel surface crater is 0.942 meter.Have 80 carbon cover rollers in stove, according to one-half method, be divided into two groups of N1, N2 of 40.The linear velocity of N1 is adjusted to 150 ms/min, and the linear velocity of N2 is still 120 ms/min, after operation, and the distance L1 between measuring tape steel surface crater is 0.942 meter, can confirm the carbon cover roller not having dross in N1, and the carbon cover roller of dross is in N2.Carry out grouping N21, N22 to the carbon cover roller of N2 group by one-half method again, by the speed setting of N21 to 150 ms/min, the linear velocity of other carbon cover roller is still 120 ms/min; After operation, the distance L21 between measuring tape steel surface crater is 0.754 meter, can confirm the carbon cover roller having dross in N21; By that analogy, until find out the carbon cover roller of dross.The linear velocity of dross carbon cover roller is kept 150 ms/min constant, the linear velocity of other carbon cover roller is identical with the speed of band steel 120 ms/min, with this kind of setting operation 50 minutes, the dross elimination on carbon cover roller.
Embodiment 3, the band steel on continuous annealing furnace production line runs with 140 ms/min of speed, and the linear velocity of carbon cover roller is also 140 ms/min.Occur pit at the belt steel surface run, this phenomenon shows, existing carbon cover roller dross; Distance L between measuring tape steel surface crater is 0.942 meter.Have 80 carbon cover rollers in stove, according to one-half method, be divided into two groups of N1, N2 of 40.The linear velocity of N1 is adjusted to 100 ms/min, and the linear velocity of N2 is still 140 ms/min, after operation, and the distance L1 between measuring tape steel surface crater is 1.32 meters, can confirm the carbon cover roller having dross in N1.Carry out grouping N11, N12 to the carbon cover roller of N1 group by one-half method again, by the speed setting of N11 to 100 ms/min, the linear velocity of other carbon cover roller is still 140 ms/min; After operation, the distance L11 between measuring tape steel surface crater is 1.32 meters, can confirm the carbon cover roller having dross in N11; By that analogy, until find out the carbon cover roller of dross.The linear velocity of dross carbon cover roller is kept 100 ms/min constant, the linear velocity of other carbon cover roller is identical with the speed of band steel 140 ms/min, with this kind of setting operation 40 minutes, the dross elimination on carbon cover roller.
Claims (2)
1. carbon cover roller dross judges and a minimizing technology, it is characterized in that: carry out as follows
One, when being with steel to have pit, stopping at continuous annealing unit outlet section, measuring pit spacing l1 with ruler;
Two, N1, N2 group is divided into investigate by one-half method on all carbon cover rollers;
Three, the linear velocity of N1 group carbon cover roller changed, the linear velocity of N2 group carbon cover roller remains unchanged, if band steel pit spacing changes, then judges that dross appears in the carbon cover roller in N1 group; If band steel pit spacing does not change, then can judge that dross appears in the carbon cover roller in N2 group;
Four, will judge that the carbon cover roller group N1 or N2 occurring dross investigates further by two, three steps, until find the carbon cover roller of dross;
Five, the linear velocity of dross carbon cover roller changed, the rotating speed of other carbon cover roller remains unchanged, and allows it run, and by carbon, the dross of overlapping on roller grinds off in the friction that band steel is produced by the velocity contrast between carbon cover roller.
2. judge and minimizing technology by a kind of carbon cover roller dross according to claim 1, it is characterized in that, in step 5, the interval that the linear velocity of dross carbon cover roller overlaps positive and negative 3/5ths of roller linear velocity by other carbon is determined.
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| CN201510626929.XA CN105177271A (en) | 2015-09-28 | 2015-09-28 | Carbon sleeve roller protrusion judging and removing method |
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| CN201510626929.XA CN105177271A (en) | 2015-09-28 | 2015-09-28 | Carbon sleeve roller protrusion judging and removing method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109926895A (en) * | 2019-02-28 | 2019-06-25 | 北京首钢股份有限公司 | The online reconditioning control method of furnace roller and device in a kind of annealing furnace |
| CN110512055A (en) * | 2018-05-22 | 2019-11-29 | 宝山钢铁股份有限公司 | The processing method of strip dross coining defect in a kind of Horizental annealer |
| CN113801988A (en) * | 2021-10-19 | 2021-12-17 | 北京首钢冷轧薄板有限公司 | Method for eliminating furnace roller nodulation |
| CN113798981A (en) * | 2021-08-30 | 2021-12-17 | 马钢(合肥)板材有限责任公司 | Method for quickly eliminating furnace roller surface nodules |
| CN115449620A (en) * | 2022-08-04 | 2022-12-09 | 包头钢铁（集团）有限责任公司 | Method for quickly positioning and processing accretions of carbon sleeves of furnace rollers of horizontal annealing furnace |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906529A (en) * | 2009-06-08 | 2010-12-08 | 鞍钢股份有限公司 | Method for controlling and treating bottom roller dross of carbon sleeve furnace |
| CN103322824A (en) * | 2012-03-22 | 2013-09-25 | 宝山钢铁股份有限公司 | Treating method of furnace roller nodule |
-
2015
- 2015-09-28 CN CN201510626929.XA patent/CN105177271A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101906529A (en) * | 2009-06-08 | 2010-12-08 | 鞍钢股份有限公司 | Method for controlling and treating bottom roller dross of carbon sleeve furnace |
| CN103322824A (en) * | 2012-03-22 | 2013-09-25 | 宝山钢铁股份有限公司 | Treating method of furnace roller nodule |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110512055A (en) * | 2018-05-22 | 2019-11-29 | 宝山钢铁股份有限公司 | The processing method of strip dross coining defect in a kind of Horizental annealer |
| CN110512055B (en) * | 2018-05-22 | 2021-03-12 | 宝山钢铁股份有限公司 | Method for treating strip steel nodulation impression defects in horizontal annealing furnace |
| CN109926895A (en) * | 2019-02-28 | 2019-06-25 | 北京首钢股份有限公司 | The online reconditioning control method of furnace roller and device in a kind of annealing furnace |
| CN113798981A (en) * | 2021-08-30 | 2021-12-17 | 马钢(合肥)板材有限责任公司 | Method for quickly eliminating furnace roller surface nodules |
| CN113801988A (en) * | 2021-10-19 | 2021-12-17 | 北京首钢冷轧薄板有限公司 | Method for eliminating furnace roller nodulation |
| CN115449620A (en) * | 2022-08-04 | 2022-12-09 | 包头钢铁（集团）有限责任公司 | Method for quickly positioning and processing accretions of carbon sleeves of furnace rollers of horizontal annealing furnace |
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