CN102513386B - Emulsion spraying method and emulsion spraying system for producing steel types with yield strength higher than 400MPa - Google Patents
Emulsion spraying method and emulsion spraying system for producing steel types with yield strength higher than 400MPa Download PDFInfo
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- CN102513386B CN102513386B CN201110455126.4A CN201110455126A CN102513386B CN 102513386 B CN102513386 B CN 102513386B CN 201110455126 A CN201110455126 A CN 201110455126A CN 102513386 B CN102513386 B CN 102513386B
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Abstract
An emulsion spraying method and an emulsion spraying system for producing steel types with yield strength higher than 400MPa. The method includes the steps of arranging spraying beams on intermediate rolls and working rolls on inlet sides and working rolls on outlet sides of all frames of a five-frame cold continuous rolling unit, arranging spraying beams among the frames, arranging a fine cooling spraying beam at an outlet of the fifth frame, and arranging spraying beams on surfaces of the working rolls of the third frame and the fourth frame; arranging a plurality of nozzles on the spraying beams; enabling the nozzles of the spraying beams on the intermediate rolls and the working rolls on the inlet sides of the frames to spray emulsion to roll seam areas on the inlet sides of the upper working rolls and the lower working rolls respectively; enabling the nozzles of the spraying beams on the intermediate rolls and the working rolls on the inlet sides of the frames to spray emulsion to roll seam areas of upper support rolls and lower support rolls respectively; enabling the nozzles of the spraying beams on the working rolls on the outlet sides of the frames to spray emulsion to roll seam areas on the inlet sides of the upper working rolls and the lower working rolls respectively; and enabling the nozzles of the spraying beams arranged on the surfaces of the working rolls of the third frame and the fourth frame to spray emulsion. The method eliminates frame vibration during rolling of a cold continuous rolling mill, and realizes normal and stable production of high-strength steel types in the cold continuous rolling unit.
Description
Technical field
The present invention relates to pickling rolling technique, particularly relate to a kind of emulsion injection method for steel types with yield strength higher than 400 MPa production and system.
Background technology
In recent years, along with the fast development of household electrical appliance industry and motor industry, the demand of silicon steel product is also constantly increased.And cold rolling non-orientation silicon steel product is due to its high magnetic strength, low iron loss, be more and more subject to the favor in market, replace the main raw material(s) that hot rolled silicon steel sheet becomes electromechanics trade at present.The low grade silicon steel product of cold rolling non-orientation generally adopts tandem mill to be rolled at present, and non-oriented high grade silicon steel product is due to its material behavior, silicon, aluminium content are higher, its yield strength is all at more than 400MPa, some high grade silicon steel is even more than 800MPa, produce according to big roller footpath tandem mill and very easily rolling mill vibration phenomenon occurs, and then affect product quality or cause broken belt to pile steel accident, therefore generally adopt 20 roller singlestandmills to be rolled to this series products.But the production efficiency of singlestandmill has obvious gap relative to tandem mill, and manufacturing cost is far above Continuous mill train, therefore under equal conditions, the cold continuous rolling fixture of like product has the stronger market competitiveness.
There are the following problems for prior art:
To the product of more than yield strength 400MPa, be rolled according to cold continuous rolling, due to its material behavior and high resistance of deformation, rolling mill vibration phenomenon easily occur in the operation of rolling and then causes broken belt accident, affecting production stability and product quality.
Be rolled according to single chassis 20 roller mill, then production cost is higher and production efficiency is low.
Summary of the invention
The object of the present invention is to provide a kind of emulsion injection method for steel types with yield strength higher than 400 MPa production and system, for relevant material property and the rolling characteristic of high strength cold-rolled product, to eliminate the frame vibration phenomenon in the cold continuous rolling operation of rolling, realize high-strength products and produce at the normal table of tandem mills.
For achieving the above object, technical scheme of the present invention is:
A kind of emulsion injection method produced for steel types with yield strength higher than 400 MPa, at each frame entrance side intermediate calender rolls of five Stands Cold Tandem Mill groups, working roll and outlet side working roll, spray beam is set, spray beam is set between each frame, 5th rack outlet place arranges spray cooling spray beam, and corresponding 3rd, 4 frame working roll roll surfaces arrange spray beam; Spray beam is provided with some nozzles; Nozzle on described spray cooling spray beam divides some groups along working roll width, and each group nozzle can spraying fire separately;
Wherein, each frame entrance side working roll spray beam nozzle is respectively to the entrance side roll gap area spray emulsion of upper working rolls and lower working rolls, and emulsion adopts 0.4 ~ 0.6MPa low-pressure to spray;
Each frame entrance side intermediate calender rolls spray beam nozzle is respectively to the roll gap area spray emulsion of upper lower support roll, and emulsion adopts 0.7 ~ 0.9MPa high pressure to spray;
Each rack outlet side working roll spray beam nozzle is respectively to the outlet side roll gap area spray emulsion of upper working rolls and lower working rolls, and emulsion adopts 0.7 ~ 0.9MPa high pressure to spray;
The spray beam nozzle that corresponding 3rd, 4 frame working roll roll surfaces are arranged sprays emulsion, and emulsion adopts 0.2 ~ 0.4MPa low-pressure to spray.
Further, on spray beam, between each nozzle, spacing is 25 ~ 50mm.
Again, arrange the spray beam with steel injection between frame between described each frame, emulsion adopts 0.4 ~ 0.6MPa pressure injection.
When adopting tandem mill to produce high-strength products, one of difficult problem solved first is needed to be exactly rolling mill vibration.And the principal element affecting rolling mill vibration comprises thickness, the stability of ROLLING OIL, the work-hardening capacity etc. of stocking of sheet material.This is wherein obvious on its impact caused with rolling lubrication again, can think like this, and rational technological lubrication and oil film thickness are the keys solving rolling mill vibration problem when high-strength products is produced.
Each frame entrance side working roll spray beam is respectively to the entrance side roll gap area spray emulsion of upper working rolls and lower working rolls, and on spray beam, between each nozzle, spacing is 25 ~ 50mm, and emulsion adopts 0.4 ~ 0.6MPa low-pressure to spray.The object that entrance side working roll roll gap region adopts low-pressure to spray is that lower expulsion pressure contributes to being uniformly distributed of oil film, makes the deformation condition of rolled piece more stable, has booster action to stable tension and roll-force.
Each frame entrance side intermediate calender rolls arranges spray beam respectively to the roll gap area spray emulsion of upper lower support roll, on spray beam, between each nozzle, spacing is 25 ~ 50mm, emulsion adopts 0.7 ~ 0.9MPa high pressure to spray, by high-pressure injection herein, sponge the deformation heat of a part of working roll, intermediate calender rolls, keep the stable of roll surface convexity.
Each rack outlet side working roll arranges spray beam respectively to the outlet side roll gap area spray emulsion of upper working rolls and lower working rolls, and on spray beam, between each nozzle, spacing is 25 ~ 50mm, and emulsion adopts 0.7 ~ 0.9MPa high pressure to spray.Here adopt the reason of high-pressure injection to be, high grade silicon steel produces higher deformation heat in deformation process, utilizes increase emulsion flow to carry out breaker roll and cools, stablize the plate shape of rolled piece.
At the 3rd, 4 frame entrance sides, arrange working roll roll surface spray beam in addition, on spray beam, between each nozzle, spacing is 25 ~ 50mm, and emulsion adopts 0.2 ~ 0.4MPa low-pressure to spray.Mention in introduction above, the key solving vibration problem is to make being evenly distributed of emulsion oil film, and keeps the relatively stable of roll surface convexity.Because entrance side working roll spray beam is the roll gap district being directly injected to working roll, adopt low-pressure injection to help oil film and be uniformly distributed.But roller temperature can be caused thus to rise problem faster.And the 3rd, 4 frames are in rolled piece work hardening visibility point the most, the temperature of roll rises the most obvious, therefore at the entrance side specific placement roll surface cooling spray beam of the 3rd frame, 4 frames, with low-pressure, low discharge emulsion, roll surface is directly sprayed, convexity stablized by cooling roll on the one hand, also contributes to oil film to remain on rational thickness on the other hand.
Spray beam between other each frame, to being with steel to spray emulsion between frame, emulsion adopts 0.4 ~ 0.6MPa pressure injection.
5th rack outlet spray cooling spray beam assists use as plate shape, does not relate to the vibration problem in the operation of rolling, carries out corresponding pressure setting according to actual plate shape.
Beneficial effect of the present invention
The present invention is directed to relevant material property and the rolling characteristic of steel types with yield strength higher than 400 MPa, devise a kind of be applicable to high-yield strength band cold continuous rolling process emulsion spray technology, eliminate the frame vibration phenomenon of high-strength products in the cold continuous rolling operation of rolling, can realize producing for the normal table of steel types with yield strength higher than 400 MPa at cold continuous rolling, significantly improve production efficiency and the lumber recovery level of Related product.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment of the present invention.
Detailed description of the invention
See Fig. 1, a kind of emulsion injection method produced for steel types with yield strength higher than 400 MPa of the present invention, at each frame 1# ~ 5# entrance side intermediate calender rolls of five Stands Cold Tandem Mill groups, spray beam ETM and EBM is set, entrance side working roll spray beam ETW and EBW and outlet side working roll arrange spray beam DT and DB, 5th frame 5# exit arranges spray cooling spray beam 5SP, and corresponding 3rd, 4 frame working roll roll surfaces arrange spray beam; Spray beam is provided with some nozzles; Nozzle on described spray cooling spray beam divides some groups along working roll width, and each group nozzle can spraying fire separately; Correspondence the 3rd, 4 frame 3#, 4# working roll roll surface arrange spray beam TW and BW; Above-mentioned spray beam is provided with some nozzles;
Wherein, each frame entrance side working roll spray beam nozzle is respectively to the entrance side roll gap area spray emulsion of upper working rolls and lower working rolls, and emulsion adopts 0.4 ~ 0.6MPa low-pressure to spray;
Each frame entrance side intermediate calender rolls spray beam nozzle is respectively to the roll gap area spray emulsion of upper lower support roll, and emulsion adopts 0.7 ~ 0.9MPa high pressure to spray;
Each rack outlet side working roll spray beam nozzle is respectively to the outlet side roll gap area spray emulsion of upper working rolls and lower working rolls, and emulsion adopts 0.7 ~ 0.9MPa high pressure to spray;
The spray beam nozzle that corresponding 3rd, 4 frame working roll roll surfaces are arranged sprays emulsion, and emulsion adopts 0.2 ~ 0.4MPa low-pressure to spray;
Further, on spray beam, between each nozzle, spacing is 25 ~ 50mm.
Again, arrange spray beam MT and MB with steel injection between frame between described each frame, emulsion adopts 0.4 ~ 0.6MPa pressure injection.
5th rack outlet spray cooling spray beam 5SP all assists use as plate shape, does not relate to the vibration problem in the operation of rolling, and it carries out corresponding pressure according to actual plate shape and arranges each group of nozzle injection.
Below in conjunction with embodiment, the present invention will be further described:
Embodiment one:
Each frame spray beam ETW and EBW is respectively to the entrance side roll gap area spray emulsion of upper working rolls and lower working rolls, and on spray beam, between each nozzle, spacing is 30mm, and emulsion adopts 0.45MPa low-pressure to spray.
Each frame spray beam ETM and EBM is respectively to the roll gap area spray emulsion of upper lower support roll, and on spray beam, between each nozzle, spacing is 30mm, and emulsion adopts 0.8MPa high pressure to spray.
Each frame spray beam DT and DB is respectively to the outlet side roll gap area spray emulsion of upper working rolls and lower working rolls, and on spray beam, between each nozzle, spacing is 30mm, and emulsion adopts 0.8MPa high pressure to spray.
The 3rd, 4 frame #3,4# entrance side, arrange working roll roll surface spray beam TW and BW in addition, on spray beam, between each nozzle, spacing is 30mm, and emulsion adopts 0.3MPa low-pressure to spray.
Spray beam MT between frame and MB pressure setting is 0.5MPa, the 5th frame 5# exports spray cooling spray beam 5SP pressure and automatically regulates according to exit plate shape situation.
Embodiment two:
Each frame spray beam ETW and EBW is respectively to the entrance side roll gap area spray emulsion of upper working rolls and lower working rolls, and on spray beam, between each nozzle, spacing is 40mm, and emulsion adopts 0.5MPa low-pressure to spray.
Each frame spray beam ETM and EBM is respectively to the roll gap area spray emulsion of upper lower support roll, and on spray beam, between each nozzle, spacing is 40mm, and emulsion adopts 0.85MPa high pressure to spray.
Each frame spray beam DT and DB is respectively to the outlet side roll gap area spray emulsion of upper working rolls and lower working rolls, and on spray beam, between each nozzle, spacing is 40mm, and emulsion adopts 0.85MPa high pressure to spray.
The 3rd, 4 frame 3#, 4# entrance side, arrange working roll roll surface spray beam TW and BW in addition, on spray beam, between each nozzle, spacing is 40mm, and emulsion adopts 0.25MPa low-pressure to spray.
Spray beam MT between each frame and MB pressure setting is 0.45MPa, the 5th frame 5# exports spray cooling spray beam 5SP pressure and automatically regulates according to exit plate shape situation.
Embodiment three:
Each frame spray beam ETW and EBW is respectively to the entrance side roll gap area spray emulsion of upper working rolls and lower working rolls, and on spray beam, between each nozzle, spacing is 45mm, and emulsion adopts 0.55MPa low-pressure to spray.
Each frame spray beam ETM and EBM is respectively to the roll gap area spray emulsion of upper lower support roll, and on spray beam, between each nozzle, spacing is 45mm, and emulsion adopts 0.9MPa high pressure to spray.
Each frame spray beam DT and DB is respectively to the outlet side roll gap area spray emulsion of upper working rolls and lower working rolls, and on spray beam, between each nozzle, spacing is 45mm, and emulsion adopts 0.9MPa high pressure to spray.
The 3rd, 4 frame 3#, 4# entrance side, arrange working roll roll surface spray beam TW and BW in addition, on spray beam, between each nozzle, spacing is 45mm, and emulsion adopts 0.4MPa low-pressure to spray.
Spray beam MT between each frame and MB pressure setting is 0.55MPa, the 5th frame 5# exports spray cooling spray beam 5SP pressure and automatically regulates according to exit plate shape situation.
Emulsion injection method of the present invention, for high relevant material property and rolling characteristic, pass through the method, eliminate the frame vibration phenomenon of high strength steel grade in the cold continuous rolling operation of rolling, improve production efficiency and the product lumber recovery level of Related product, especially, under the background constantly expanded in current high grade non-oriented silicon steel produce market demand, high grade non-oriented silicon steel product cold continuous rolling process substituting the singlestandmill operation of rolling can be realized, have broad application prospects.
Claims (3)
1. the emulsion injection method produced for steel types with yield strength higher than 400 MPa, it is characterized in that, at each frame entrance side intermediate calender rolls of five Stands Cold Tandem Mill groups, working roll and outlet side working roll, spray beam is set, arrange the spray beam with steel injection between frame between each frame, 5th rack outlet place arranges spray cooling spray beam, and corresponding 3rd, 4 frame working roll roll surfaces arrange spray beam; Spray beam is provided with some nozzles, and between each nozzle, spacing is 25 ~ 50mm; Nozzle on described spray cooling spray beam divides some groups along working roll width, and each group nozzle can spraying fire separately;
Wherein, each frame entrance side working roll spray beam nozzle is respectively to the entrance side roll gap area spray emulsion of upper working rolls and lower working rolls, and emulsion adopts 0.4 ~ 0.6MPa low-pressure to spray;
Each frame entrance side intermediate calender rolls spray beam nozzle is respectively to the roll gap area spray emulsion of upper lower support roll, and emulsion adopts 0.7 ~ 0.9MPa high pressure to spray;
Each rack outlet side working roll spray beam nozzle is respectively to the outlet side roll gap area spray emulsion of upper working rolls and lower working rolls, and emulsion adopts 0.7 ~ 0.9MPa high pressure to spray;
The spray beam nozzle that corresponding 3rd, 4 frame working roll roll surfaces are arranged sprays emulsion, and emulsion adopts 0.2 ~ 0.4MPa low-pressure to spray.
2. as claimed in claim 1 for the emulsion injection method that steel types with yield strength higher than 400 MPa is produced, it is characterized in that, arrange the spray beam with steel injection between frame between described each frame, emulsion adopts 0.4 ~ 0.6MPa pressure injection.
3., for the emulsion spraying system that steel types with yield strength higher than 400 MPa is produced, it is characterized in that,
At each frame entrance side intermediate calender rolls of five Stands Cold Tandem Mill groups, working roll and outlet side working roll, spray beam is set, arrange the spray beam with steel injection between frame between each frame, 5th rack outlet place arranges spray cooling spray beam, and corresponding 3rd, 4 frame working roll roll surfaces arrange spray beam; Spray beam is provided with some nozzles, and between each nozzle, spacing is 25 ~ 50mm; Wherein, the entrance side roll gap region of the corresponding upper working rolls and lower working rolls of each frame entrance side working roll spray beam nozzle difference; Wherein, the roll gap region of the corresponding upper lower support roll of each frame entrance side intermediate calender rolls spray beam nozzle difference; The outlet side roll gap region of the corresponding upper working rolls and lower working rolls of each rack outlet side working roll spray beam nozzle difference; Corresponding 3rd, 4 frame working roll roll surfaces arrange spray beam nozzle.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110455126.4A CN102513386B (en) | 2011-12-30 | 2011-12-30 | Emulsion spraying method and emulsion spraying system for producing steel types with yield strength higher than 400MPa |
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| CN201110455126.4A CN102513386B (en) | 2011-12-30 | 2011-12-30 | Emulsion spraying method and emulsion spraying system for producing steel types with yield strength higher than 400MPa |
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| CN102513386A CN102513386A (en) | 2012-06-27 |
| CN102513386B true CN102513386B (en) | 2015-07-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105363811B (en) * | 2015-12-21 | 2017-03-15 | 本钢板材股份有限公司 | Strip steel cooling process method and device between a kind of sour rolling mill frame |
| 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 |
| CN115446113B (en) * | 2022-09-28 | 2024-04-26 | 湖南宏旺新材料科技有限公司 | Cold rolling process for improving oil burning defect of silicon steel plate surface |
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| US3208253A (en) * | 1963-05-10 | 1965-09-28 | United States Steel Corp | Control of rolling mill lubricant |
| CN1956804A (en) * | 2004-05-18 | 2007-05-02 | Sms迪马格股份公司 | Method and device for cooling and/or lubricating cylinders and/or rolling stock |
| CN1986094A (en) * | 2006-12-22 | 2007-06-27 | 中冶南方工程技术有限公司 | Method of maintaining stable emulsion spraying during continuous relling of sheet |
| CN201046469Y (en) * | 2007-04-24 | 2008-04-16 | 宝山钢铁股份有限公司 | Water draining device for double cold reduction mill |
| CN102189126A (en) * | 2010-03-12 | 2011-09-21 | 宝山钢铁股份有限公司 | Injection device and method for uniformly lubricating roll gap of rolling mill |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005193242A (en) * | 2003-12-26 | 2005-07-21 | Jfe Steel Kk | Cold tandem rolling method for metallic sheet, and cold tandem mill |
| JP4102356B2 (en) * | 2004-11-10 | 2008-06-18 | 新日本製鐵株式会社 | Cold rolling equipment and cold rolling method |
| JP2008194721A (en) * | 2007-02-13 | 2008-08-28 | Jfe Steel Kk | Method of cold-rolling metallic sheet |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3208253A (en) * | 1963-05-10 | 1965-09-28 | United States Steel Corp | Control of rolling mill lubricant |
| CN1956804A (en) * | 2004-05-18 | 2007-05-02 | Sms迪马格股份公司 | Method and device for cooling and/or lubricating cylinders and/or rolling stock |
| CN1986094A (en) * | 2006-12-22 | 2007-06-27 | 中冶南方工程技术有限公司 | Method of maintaining stable emulsion spraying during continuous relling of sheet |
| CN201046469Y (en) * | 2007-04-24 | 2008-04-16 | 宝山钢铁股份有限公司 | Water draining device for double cold reduction mill |
| CN102189126A (en) * | 2010-03-12 | 2011-09-21 | 宝山钢铁股份有限公司 | Injection device and method for uniformly lubricating roll gap of rolling mill |
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