CN106513448B - Strip finish rolling descaling method - Google Patents
Strip finish rolling descaling method Download PDFInfo
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- CN106513448B CN106513448B CN201610994386.1A CN201610994386A CN106513448B CN 106513448 B CN106513448 B CN 106513448B CN 201610994386 A CN201610994386 A CN 201610994386A CN 106513448 B CN106513448 B CN 106513448B
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- Prior art keywords
- pinch roller
- strip
- pressure
- control
- finish rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention provides a kind of strip finish rolling descaling methods.The strip finish rolling descaling method controls the entrance pinch roll of De-scaling box using position, is controlled using pressure the outlet pinch roller of De-scaling box, and then improve pinch roller service life, and improve pinch roller water blocking effect.Wherein, in the range of the position control can control the position of entrance pinch roll fewer 10mm than workpiece thickness to 12mm fewer than workpiece thickness；The pressure of the controllable outlet pinch roller of pressure control is 14~16kN.Beneficial effects of the present invention include：By improving pinch roller control model, De-scaling box collector control model is optimized, mechanical equipment service life can be improved, improves scale removal effect, and then improve Surfaces of Hot Rolled Strip quality.
Description
Technical field
The present invention relates to belt steel rolling (for example, hot rolling) technical fields, it relates in particular to a kind of strip finish rolling de-scaling side
Method.
Background technology
Currently, traditional two groups of control models of De-scaling box pinch roller control for pressure, pressure control can cause pinch roller to wear
Greatly, and abration position is fixed, and keeps pinch roller service life short, and is unfavorable for the stability of quality control；And traditional De-scaling box
Collector control model is unfavorable for strip de-scaling end to end.
Invention content
It is an object of the invention to solve at least one in deficiencies of the prior art.
The mechanical equipments service lifes such as De-scaling box pinch roller are improved, improves and removes for example, one of the object of the invention is to realize
At least one of in squama effect and raising Surfaces of Hot Rolled Strip quality etc..
To achieve the goals above, the present invention provides a kind of strip finish rolling descaling methods.Strip finish rolling de-scaling side
Method controls the entrance pinch roll of De-scaling box using position, is controlled using pressure the outlet pinch roller of De-scaling box, and then improve
Pinch roller service life, and improve pinch roller water blocking effect.Wherein, the position control can control the position of entrance pinch roll
In the range of extremely than workpiece thickness fewer 12mm fewer 10mm than workpiece thickness；The controllable outlet pinch roller of pressure control
Pressure be 14~16kN.
In addition, in an exemplary embodiment of the present invention, the strip finish rolling descaling method may also include：In strip
After reaching flying shear shearing, tracing positional is recalculated, De-scaling box high pressure water proceeds by injection, when tracking arrival De-scaling box the
When one group of collector, first group of collector falls, and when reaching second group of collector, second group of collector falls, when reaching out
When mouth pinch roller position, exports pinch roller and entrance pinch roll falls simultaneously, and reach operating position.
Compared with prior art, beneficial effects of the present invention include：By improving pinch roller control model, de-scaling is optimized
Case collector control model can improve mechanical equipment service life, improve scale removal effect, and then improve Surfaces of Hot Rolled Strip matter
Amount.
Specific implementation mode
Hereinafter, the strip finish rolling descaling method that the present invention will be described in detail will be carried out in conjunction with exemplary embodiment.
Generally speaking, idea of the invention is that improving mechanical equipment service life, scale removal effect is improved, and then improve heat
Roll strip surface quality.
In an exemplary embodiment of the present invention, strip finish rolling descaling method can be realized by following procedure：It is right
The entrance pinch roll of De-scaling box is controlled using position, is controlled using pressure the outlet pinch roller of De-scaling box, and then improve and pinch
Roller service life, and improve pinch roller water blocking effect.
Wherein, in the step of being controlled using position the entrance pinch roll of De-scaling box, specifically, entrance can be pinched
The position control of roller is in the range of extremely than workpiece thickness fewer 12mm fewer 10mm than workpiece thickness.Preferably, position controls
It is fewer 11mm than workpiece thickness that the position of entrance pinch roll can be controlled.
Wherein, in the step of being controlled using pressure the outlet pinch roller of De-scaling box, it can control the pressure of outlet pinch roller
Power is 14~16kN.Preferably, the pressure of the controllable outlet pinch roller of pressure control is 15kN.
In another exemplary embodiment of the present invention, strip finish rolling descaling method can also include：It is reached in strip
After flying shear shearing, tracing positional is recalculated, De-scaling box high pressure water proceeds by injection, when tracking reaches first group of De-scaling box
When collector, first group of collector falls, and when reaching second group of collector, second group of collector falls, when arrival outlet clip
When sending roller position, exports pinch roller and entrance pinch roll falls simultaneously, and reach operating position.
Inventor has found that the present invention is controlled by using entrance pinch roll position by practice summary, and outlet pinches roll-in
Power controls, and can improve pinch roller service life, improves pinch roller water blocking effect, and then improve strip surface quality.
In another exemplary embodiment of the present invention, strip finish rolling descaling method also may be accomplished by：
De-scaling box entrance pinch roll is controlled using position, and position control parameter is adjusted according to workpiece thickness, to protect
Pinch roller water blocking effect is demonstrate,proved, the position of pinch roller is controlled in workpiece thickness h-11mm.
It exports pinch roller to control using pressure, be observed according to field experience, when Withdrawal roll pressure uses 15kN, water blocking effect
It is optimal；The reason of being controlled using this：Due to 15 degree of angles that the nozzle spray direction of De-scaling box collector is the reverse strip direction of motion.
Therefore, the direction of motion of de-scaling water is mainly exported to Way in from De-scaling box and is moved, therefore the gear that entrance pinch roll is taken
The effect of water group will be far longer than outlet, and outlet pinch roller is mainly used in the recoil of the high pressure water after blocking de-scaling.Therefore outlet clip
Roller is sent to take pressure control that can obtain better effects, entrance pinch roll can obtain better effect using position control.
In addition, the method for the present exemplary embodiment is excellent also for the progress of the control logic of De-scaling box descaling header and pinch roller
Change.Specifically, after strip reaches flying shear shearing, model can recalculate tracing positional, and tracing positional at this time is accurate
True, after flying shear shearing, De-scaling box high pressure water proceeds by injection, when tracking reaches first group of collector of De-scaling box, first group
Collector falls, and when reaching second group of collector, second group of collector falls, and when reaching outlet pinch roller position, goes out
Mouth pinch roller and entrance pinch roll fall simultaneously, and operating position is reached according to respective control model.Such control model can have
Effect improves strip scale removal effect, ensures the surface quality of strip.
Inventor embodies the part advantageous effect of the present invention by benefit calculation below：
1, social benefit：Certain steel vanadium board mill popularity is helped to improve, hot-rolled process Process Quality Control is improved.
2, economic benefit：Strip surface quality is improved, the sale that degrades, degradation product are needed the defects of if there is iron scale
Price difference with certified products is 500 yuan/ton；Board mill hot-rolled process iron scale amount is 1011 tons before improving, and is now reduced to after improvement
195 tons.Benefit Y=△ P*W*T
Y---- benefits
△ P---- price differentials
W---- weight
The T---- times (12 months)
Y=500 yuan/ton of * 816 tons of * December=48.96 ten thousand yuan/year.
The advantageous effect of the application is further embodied below by way of the comparison of comparative example and the method for the present invention.
Comparative example 1：De-scaling box pinch roller is all made of pressure pattern control.
Pinch roller service life (six months) is not arrived after using three months, and pinch roller leads to water blocking due to serious wear
Effect is poor, and pressure at both sides occurs during use and fluctuate big situation.
Comparative example 2：De-scaling box pinch roll inlet position is controlled according to workpiece thickness -5mm, and outlet pinch roller is according to 5kN
There is drainage, illustrate that water blocking effect is poor under this location status in control, exit and entrance.
Comparative example 3：De-scaling box pinch roller logically strip into F1 press controls
Surface testing instrument after finish rolling finds that strip steel head, which exists, does not eliminate iron scale and iron scale piebald,
It can only increase the production time by smooth excision in lower process, increase producing cost.
Example：Entrance pinch roll is controlled according to position, and position is belt steel thickness -11mm controls, and outlet pinch roller is according to pressure
Power controls, and pressure gives 15kN, and strip reaches outlet pinch roller position, and pinch roller starts to push.Belt steel surface scale removal effect is good
It is good, and pinch roller water blocking effect is good, does not there is apparent drainage, and pinch roller is used according to normal cycle.
Although having been combined exemplary embodiment above describes the present invention, those of ordinary skill in the art should be clear
Chu can carry out various modifications above-described embodiment in the case where not departing from spirit and scope by the claims.
Claims (3)
1. a kind of descaling method of strip before finishing mill, which is characterized in that entrance of the strip descaling method to De-scaling box
Pinch roller is controlled using position, is controlled using pressure the outlet pinch roller of De-scaling box, and then improve pinch roller service life, and
Improve pinch roller water blocking effect, wherein the position control controls the position of entrance pinch roll fewer than workpiece thickness
For 10mm in the range of fewer 12mm than workpiece thickness, the pressure of pressure control control outlet pinch roller is 14~16kN,
The strip finish rolling descaling method further includes：After strip reaches flying shear shearing, tracing positional, De-scaling box high pressure are recalculated
Water proceeds by injection, and when tracking reaches first group of collector of De-scaling box, first group of collector falls, when second group of collection of arrival
Guan Shi, second group of collector fall, and when reaching outlet pinch roller position, export pinch roller and entrance pinch roll at present
It falls, and reaches operating position.
2. strip finish rolling descaling method according to claim 1, which is characterized in that the position is controlled entrance pinch roll
Position control be it is fewer 11mm than workpiece thickness.
3. strip finish rolling descaling method according to claim 1, which is characterized in that the pressure control control outlet pinches
The pressure of roller is 15kN.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994386.1A CN106513448B (en) | 2016-11-11 | 2016-11-11 | Strip finish rolling descaling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994386.1A CN106513448B (en) | 2016-11-11 | 2016-11-11 | Strip finish rolling descaling method |
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| Publication Number | Publication Date |
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| CN106513448A CN106513448A (en) | 2017-03-22 |
| CN106513448B true CN106513448B (en) | 2018-10-23 |
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| CN201610994386.1A Active CN106513448B (en) | 2016-11-11 | 2016-11-11 | Strip finish rolling descaling method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107116101B (en) * | 2017-03-30 | 2018-12-14 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling finishing mill group |
| CN110355221B (en) * | 2019-06-06 | 2020-09-18 | 山东钢铁股份有限公司 | Hot-rolled strip steel production line fine descaling pinch roll adjusting system and method |
| CN114247764B (en) * | 2022-01-07 | 2023-03-03 | 鞍钢股份有限公司 | Method for setting descaling of finish rolling inlet of hot-rolled strip steel production line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191937A (en) * | 2012-01-10 | 2013-07-10 | 宝山钢铁股份有限公司 | Segmental descaling control method for hot continuous rolling mill |
| CN104043685A (en) * | 2014-03-11 | 2014-09-17 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling instant steel biting of pinch roll of coiling machine |
| CN104801551A (en) * | 2014-01-23 | 2015-07-29 | 宝山钢铁股份有限公司 | Hot continuous rolling strip thick plate coiling temperature control method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3231698B2 (en) * | 1998-03-19 | 2001-11-26 | 株式会社神戸製鋼所 | Manufacturing method of hot rolled steel sheet with excellent surface properties |
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2016
- 2016-11-11 CN CN201610994386.1A patent/CN106513448B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103191937A (en) * | 2012-01-10 | 2013-07-10 | 宝山钢铁股份有限公司 | Segmental descaling control method for hot continuous rolling mill |
| CN104801551A (en) * | 2014-01-23 | 2015-07-29 | 宝山钢铁股份有限公司 | Hot continuous rolling strip thick plate coiling temperature control method |
| CN104043685A (en) * | 2014-03-11 | 2014-09-17 | 首钢京唐钢铁联合有限责任公司 | Method and device for controlling instant steel biting of pinch roll of coiling machine |
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| CN106513448A (en) | 2017-03-22 |
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