CN103357676B - A kind of system of subdivision control of level liquid injection pressure and method thereof - Google Patents
A kind of system of subdivision control of level liquid injection pressure and method thereof Download PDFInfo
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- CN103357676B CN103357676B CN201310277382.8A CN201310277382A CN103357676B CN 103357676 B CN103357676 B CN 103357676B CN 201310277382 A CN201310277382 A CN 201310277382A CN 103357676 B CN103357676 B CN 103357676B
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Abstract
The invention discloses a kind of system and method thereof of subdivision control of level liquid injection pressure, belong to cold rolled sheet rolling technical field.This system comprises steel grade application factor module, for judging according to the steel grade application factor of steel classification table to band steel by setting, obtains the steel grade application factor being with steel; The running speed of encoder to band steel that strip speed module is used for according to being arranged on planisher idler roller place is measured, and obtains strip speed; Leveling precision expulsion pressure module is used for, according to steel grade application factor and the strip speed of being with steel, calculating leveling precision expulsion pressure.The present invention can subdivision control of level liquid injection pressure, to realize reducing leveling precision consumption, for the purpose of the economic and social benefit increasing enterprise.
Description
Technical field
The invention belongs to cold rolled sheet rolling technical field, particularly a kind of system of subdivision control of level liquid injection pressure and method thereof.
Background technology
The production process of cold-rolled steel sheet generally comprises pickling, rolling, annealing, smooth and finishing five operations.Wherein smooth is be with steel after recrystallization annealing with the cold finishing stands that the reduction ratio of 0.3-3.0% carries out.This operation determines the surface state of coil of strip, plate shape, mechanical property and processing performance to a great extent.Smoothly be divided into again dry smooth and wet jetting piles, with dry smooth compared with, wet jetting piles mainly contains following advantage:
1. the realization of smooth percentage elongation can be guaranteed;
2. the clean condition of belt steel surface can be improved, keep the clean of planisher and each roll surface of Precise asymptotics, avoid, because impurity press-in, impurity are adhered and produced the defects such as slivering, both having facilitated roll shape to adjust, prevent again surface of cold-rolled steel plate from occurring scratch and affect surface of cold-rolled steel plate quality;
3. the band steel after smooth has rust-proof effect, and coil of strip stores non-corrosive in warehouse a middle or short term;
4. decrease the wearing and tearing of band steel and roll, thus can reduce roll consumption, improve roll campaign, can roll-force 30-40% be reduced under identical smooth condition.
Wet jetting piles has many dry smooth advantages that cannot replace, but leveling precision and the jet control system of current domestic use mostly are external import, how have that leveling precision is expensive, waste is serious and many drawbacks such as leveling precision expulsion pressure control model unification, be current each cold rolling mill difficult problem urgently to be resolved hurrily by optimizing leveling precision control system to realize minimizing leveling precision consumption object for this reason.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of system and method thereof of subdivision control of level liquid injection pressure, solves leveling precision in prior art and consumes excessive technical problem.
For solving the problems of the technologies described above, the invention provides a kind of system of subdivision control of level liquid injection pressure, comprising: steel grade application factor module, strip speed module and leveling precision expulsion pressure module; Wherein, described steel grade application factor module is used for judging according to the steel grade application factor of steel classification table to band steel by setting, obtains the steel grade application factor of described band steel;
The running speed of encoder to described band steel that described strip speed module is used for according to being arranged on planisher idler roller place is measured, and obtains described strip speed;
Described leveling precision expulsion pressure module is used for, according to the steel grade application factor of described band steel and described strip speed, calculating described leveling precision expulsion pressure.
Further, described system also comprises display module, and described display module is for showing described leveling precision expulsion pressure and described strip speed.
A method for subdivision control of level liquid injection pressure, comprises the steps:
Step 101: calculate steel grade application factor;
Judged by the steel grade application factor of steel classification table to band steel of setting, obtain the steel grade application factor of described band steel;
Step 102: measure strip speed;
The running speed of encoder to band steel according to being arranged on planisher idler roller place is measured, and obtains described strip speed;
Step 103: calculate leveling precision expulsion pressure;
According to steel grade application factor and the described strip speed of described band steel, calculate described leveling precision expulsion pressure.
Further, the method for leveling precision expulsion pressure is obtained described in as the formula (1):
Wherein, pressure is leveling precision expulsion pressure, and unit is Pa; K1 is the steel grade application factor of band steel, and unit is dimensionless; V is the running speed of band steel, and unit is m/min.
Further, the steel grade of described band steel is IF steel, straight carbon steel or high-strength steel.
Further, when the steel grade of described band steel is IF steel, described steel grade application factor is 1;
When the steel grade of described band steel is straight carbon steel, described steel grade application factor is 1.1;
When the steel grade of described band steel is high-strength steel, described steel grade application factor is 1.2.
Further, described strip speed, for being less than 60mpm, is more than or equal between 500mpm or 60mpm to 500mpm.
The system of subdivision control of level liquid injection pressure provided by the invention and method thereof, according to steel grade application factor is different, there is some difference, leveling precision expulsion pressure controlling curve after optimization introduces steel grade application factor, by the judgement to strip speed interval, can subdivision control of level liquid injection pressure, to realize reducing leveling precision consumption, for the purpose of the economic and social benefit of increase enterprise.
Accompanying drawing explanation
The method step flow chart of the subdivision control of level liquid injection pressure that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
The system of a kind of subdivision control of level liquid injection pressure that the embodiment of the present invention provides, comprising: steel grade application factor module, strip speed module and leveling precision expulsion pressure module; Wherein, steel grade application factor module is used for judging according to the steel grade application factor of steel classification table to band steel by setting, obtains the steel grade application factor being with steel;
The running speed of encoder to band steel that strip speed module is used for according to being arranged on planisher idler roller place is measured, and obtains strip speed;
Leveling precision expulsion pressure module is used for, according to steel grade application factor and the strip speed of being with steel, calculating leveling precision expulsion pressure.
Wherein, this system also comprises display module, and display module, for showing leveling precision expulsion pressure and strip speed, finally achieves man-machine interface intelligent display function.
See Fig. 1, a kind of method of subdivision control of level liquid injection pressure, comprises the steps:
Step 101: calculate steel grade application factor;
Judged by the steel grade application factor of steel classification table to band steel of setting, obtain the steel grade application factor being with steel, in embodiments of the present invention, in steel classification table, the steel grade of this band steel is IF steel, straight carbon steel or high-strength steel, and its application factor is respectively 1,1.1 and 1.2;
Step 102: measure strip speed;
The running speed of encoder to band steel according to being arranged on planisher idler roller place is measured, obtain strip speed, in embodiments of the present invention, strip speed can be divided into and be less than 60mpm, is more than or equal to three kinds of situations between 500mpm or 60mpm to 500mpm;
Step 103: calculate leveling precision expulsion pressure;
According to steel grade application factor and the strip speed of band steel, calculate leveling precision expulsion pressure, wherein, obtain the method for leveling precision expulsion pressure as the formula (1):
Wherein, pressure is leveling precision expulsion pressure, and unit is Pa; K1 is the steel grade application factor of band steel, and unit is dimensionless; V is the running speed of band steel, and unit is m/min.
The system of the subdivision control of level liquid injection pressure that the invention process provides and method thereof, according to coil of strip steel grade, cross planisher time strip speed segmentation Based Intelligent Control, and achieve long-range HMI interface display, system intelligence switches and controls the power of leveling precision expulsion pressure.
In embodiments of the present invention, domestic certain cold rolling mill 1850 connects and moves back after unit adopts this inventive method, in embodiments of the present invention, produces thickness 0.8mm, and during the IF steel of width 1500mm, its steel grade application factor is 1;
When strip speed is 30mpm, according to formula (1), calculating leveling precision expulsion pressure is 0.6bar;
When strip speed is 80mpm, according to formula (1), calculating planisher expulsion pressure is 1.403bar;
When strip speed is 560mpm, according to formula (1), calculating leveling precision expulsion pressure is 1.6bar, achieves for the different steel speed of service, and automatic segmentation controls the function of leveling precision expulsion pressure.
The method of the subdivision control of level liquid injection pressure that the embodiment of the present invention provides, the method can be applied to domestic certain 1850 connect move back unit after, this unit leveling precision consumption reduces 0.01kg/t in earlier stage, calculate with leveling precision unit price 11.63 yuan/kg and the 930000 tons of annual productions of this unit, 10.8 ten thousand yuan can be saved every year.
It should be noted last that, above detailed description of the invention is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to example to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of right of the present invention.
Claims (6)
1. a system for subdivision control of level liquid injection pressure, is characterized in that, comprising: steel grade application factor module, strip speed module and leveling precision expulsion pressure module; Wherein, described steel grade application factor module is used for judging according to the steel grade application factor of steel classification table to band steel by setting, obtains the steel grade application factor of described band steel;
The running speed of encoder to described band steel that described strip speed module is used for according to being arranged on planisher idler roller place is measured, and obtains described strip speed;
Described leveling precision expulsion pressure module is used for, according to the steel grade application factor of described band steel and described strip speed, calculating described leveling precision expulsion pressure.
2. system according to claim 1, is characterized in that, described system also comprises display module, and described display module is for showing described leveling precision expulsion pressure and described strip speed.
3. a method for subdivision control of level liquid injection pressure, is characterized in that, comprises the steps:
Step 101: calculate steel grade application factor;
Judged by the steel grade application factor of steel classification table to band steel of setting, obtain the steel grade application factor of described band steel;
Step 102: measure strip speed;
The running speed of encoder to described band steel according to being arranged on planisher idler roller place is measured, and obtains described strip speed;
Step 103: calculate leveling precision expulsion pressure;
According to steel grade application factor and the described strip speed of described band steel, calculate described leveling precision expulsion pressure.
4. method according to claim 3, is characterized in that, described in obtain the method for leveling precision expulsion pressure such as formula shown in (1):
Wherein, pressure is leveling precision expulsion pressure, and unit is Pa; k
ifor being with the steel grade application factor of steel, unit is dimensionless; V is the running speed of band steel, and unit is m/min.
5. method according to claim 4, is characterized in that, the steel grade of described band steel is IF steel, straight carbon steel or high-strength steel.
6. method according to claim 5, is characterized in that, when the steel grade of described band steel is IF steel, described steel grade application factor is 1;
When the steel grade of described band steel is straight carbon steel, described steel grade application factor is 1.1;
When the steel grade of described band steel is high-strength steel, described steel grade application factor is 1.2.
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| CN103639212B (en) * | 2013-11-27 | 2018-01-09 | 张家港浦项不锈钢有限公司 | Cold rolling mill fluid amount control method |
| CN107904603B (en) * | 2017-10-31 | 2019-09-17 | 日照宝华新材料有限公司 | The method for controlling sour horizontal line belt steel surface foreign matter indentation defect |
| CN110695102B (en) * | 2019-10-18 | 2021-04-13 | 首钢智新迁安电磁材料有限公司 | Strip steel lubricating method |
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| JPH09253707A (en) * | 1996-03-19 | 1997-09-30 | Sumitomo Metal Ind Ltd | Skin-pass rolling method |
| JPH10263696A (en) * | 1997-03-21 | 1998-10-06 | Nippon Steel Corp | Cooling method at the time of winding hot rolled steel sheet |
| US6220067B1 (en) * | 1999-01-21 | 2001-04-24 | Kabushiki Kaisha Toshiba | Rolled material temperature control method and rolled material temperature control equipment of delivery side of rolling mill |
| JP2004167524A (en) * | 2002-11-19 | 2004-06-17 | Nippon Steel Corp | Liquid removing device for temper mill in combined equipment of continuous annealing and hot-dip plating |
| CN102378655A (en) * | 2009-03-30 | 2012-03-14 | 杰富意钢铁株式会社 | Cooling device for hot rolled steel sheet |
| CN102639262A (en) * | 2009-11-24 | 2012-08-15 | 住友金属工业株式会社 | Hot-rolled steel sheet manufacturing device, and hot-rolled steel sheet manufacturing method |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09253707A (en) * | 1996-03-19 | 1997-09-30 | Sumitomo Metal Ind Ltd | Skin-pass rolling method |
| JPH10263696A (en) * | 1997-03-21 | 1998-10-06 | Nippon Steel Corp | Cooling method at the time of winding hot rolled steel sheet |
| US6220067B1 (en) * | 1999-01-21 | 2001-04-24 | Kabushiki Kaisha Toshiba | Rolled material temperature control method and rolled material temperature control equipment of delivery side of rolling mill |
| JP2004167524A (en) * | 2002-11-19 | 2004-06-17 | Nippon Steel Corp | Liquid removing device for temper mill in combined equipment of continuous annealing and hot-dip plating |
| CN102378655A (en) * | 2009-03-30 | 2012-03-14 | 杰富意钢铁株式会社 | Cooling device for hot rolled steel sheet |
| CN102639262A (en) * | 2009-11-24 | 2012-08-15 | 住友金属工业株式会社 | Hot-rolled steel sheet manufacturing device, and hot-rolled steel sheet manufacturing method |
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Address after: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee after: Shougang Group Co. Ltd. Address before: 100041 Shijingshan Road, Beijing, No. 68, No. Patentee before: Capital Iron & Steel General Company |
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