CN100443206C - Method of maintaining stable emulsion spraying during continuous relling of sheet - Google Patents
Method of maintaining stable emulsion spraying during continuous relling of sheet Download PDFInfo
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- CN100443206C CN100443206C CNB200610125554XA CN200610125554A CN100443206C CN 100443206 C CN100443206 C CN 100443206C CN B200610125554X A CNB200610125554X A CN B200610125554XA CN 200610125554 A CN200610125554 A CN 200610125554A CN 100443206 C CN100443206 C CN 100443206C
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Abstract
The emulsion spraying method of maintaining stablity of sheet during continuous rolling features that emulsion is sprayed from the work roll gap lubricating beam A arranged in the entrance side of the frame to the roll gap between upper and lower work rolls in the lower pressure of 0.3-0.4 MPa, from the work roll cleaning and cooling spray beam B arranged in the exit side to the surface of upper and lower work rolls in the pressure of 0.5-0.7 MPa, from the intermediate roll and support roll cooling and cleaning spray beam D in the exit side to intermediate roll and support roll in the pressure of 0.8-0.9 MPa, and from the strip steel cooling and cleaning spray beam C in the exit side to the upper and lower surfaces of strip steel in the low pressure of 0.3-0.4 MPa. The method can raise the stability of the strip steel.
Description
Technical field
The invention belongs to plate hight speed rolling field as thin as a wafer, be specifically related to a kind of assurance and be with the stable emulsion injection method of steel in the plate continuous rolling process as thin as a wafer.
Background technology
The mill speed of modern cold continuous rolling generally at 1500m/min between the 3000m/min, produce the cold continuous rolling of plate as thin as a wafer, consider that from production efficiency ordinary production speed is higher than common cold-reduced sheet again.Milling train under the effect of various perturbed forces, is easy to occur frequency tripling or five frequency multiplication flutters in the rolling process of plate as thin as a wafer, by tension force between frame, pass to continuous frame, causes system vibration, causes the serious overproof even broken belt of tape thickness, damage equipment.Therefore, guaranteeing that the band steel is stable in the operation of rolling, is the rolling key of plate as thin as a wafer.
In various influence factors, it is to cause the unsettled key factor of band steel that emulsion sprays.
In the operation of rolling, in order to guarantee the belt steel surface cleaning, the normal method that strengthens the emulsion expulsion pressure that adopts causes bigger impact to belt steel surface, causes disturbance.Simultaneously, affected by various factors, the pressure oscillation of emulsion system is bigger, and this pressure oscillation passes to the band steel, and aggravation is with the tension force shakiness of steel.Therefore, the rolling lumber recovery of plate is low as thin as a wafer, cost is high.
Summary of the invention
The object of the present invention is to provide a kind of the assurance in the tandem rolling course of sheet metal very much with the stable emulsion injection method of steel, this method can improve band steel stability.
To achieve these goals, technical scheme of the present invention is: guarantee to be with the stable emulsion injection method of steel in the plate continuous rolling process as thin as a wafer, it is characterized in that: the working roll roll gap lubrication spray beam A of 1～No. 4 milling train is arranged in the frame entrance side in the six roll five-machine frame tandem rollings, working roll roll gap lubrication spray beam A is made up of last lubricated spray beam A1 and following lubricated spray beam A2, going up lubricated spray beam A1 is positioned on the rolling centerline 7, lubricated spray beam A2 is positioned under the rolling centerline 7 down, go up lubricated spray beam A1, be respectively equipped with three sections shower nozzles on the lubricated spray beam A2 down, according to three sections controls of the wide branch of plate, respectively bottom working roll 3 is sprayed emulsion with the roll gap district of top working roll 4, emulsion adopts 0.3～0.4Mpa low-pressure to spray;
The cooling of the working roll of 1～No. 4 milling train and cleaning spray beam B are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, working roll cooling and cleaning spray beam B are by top working roll cooling and cleaning spray beam B1, bottom working roll cooling and cleaning spray beam B2 form, top working roll cooling and cleaning spray beam B1 are positioned on the rolling centerline 7, bottom working roll cooling and cleaning spray beam B2 are positioned under the rolling centerline 7, top working roll cooling and cleaning spray beam B1, be respectively equipped with three sections shower nozzles on bottom working roll cooling and the cleaning spray beam B2, according to three sections controls of the wide branch of plate, respectively to top working roll 4, the roll surface of bottom working roll 3 sprays emulsion, and the emulsion expulsion pressure is 0.5-0.7Mpa;
The cooling of the intermediate calender rolls of 1～No. 4 milling train and backing roll and cleaning spray beam D are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, intermediate calender rolls and backing roll cooling and cleaning spray beam D are by upper intermediate calender rolls and backing roll cooling and cleaning spray beam D1, lower intermediate calender rolls and backing roll cooling and cleaning spray beam D2 form, upper intermediate calender rolls and backing roll cooling and cleaning spray beam D1 are positioned on the rolling centerline 7, lower intermediate calender rolls and backing roll cooling and cleaning spray beam D2 are positioned under the rolling centerline 7, upper intermediate calender rolls and backing roll cooling and cleaning spray beam D1, not segmentation of shower nozzle control on lower intermediate calender rolls and backing roll cooling and the cleaning spray beam D2, respectively to the roll gap district of upper intermediate calender rolls 5 with top backing up roll 6, lower intermediate calender rolls 2 sprays emulsion with the roll gap district of lower support roll 1, and the emulsion expulsion pressure is 0.8-0.9Mpa;
The cooling of the band steel of 1～No. 4 milling train and cleaning spray beam C are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, the cooling of band steel and cleaning spray beam C are by upper band steel cooling and cleaning spray beam C1, lower band steel cooling and cleaning spray beam C2 form, on be positioned at top with steel with steel cooling and cleaning spray beam C1, be positioned at below with steel with steel cooling and cleaning spray beam C2 down, upper band steel cooling and cleaning spray beam C1, be respectively equipped with three sections shower nozzles on lower band steel cooling and the cleaning spray beam C2, according to three sections controls of the wide branch of plate, respectively upper surface and lower surface with steel are sprayed emulsion, emulsion adopts 0.3～0.4Mpa low-pressure to spray.
In the operation of rolling, the effect of emulsion has three kinds: lubricate, clean, cool off.Lubricated key is the composition and the performance of emulsion, and is little with the expulsion pressure relation; The key of cleaning and cooling is flow and temperature, and is therefore, close with pressure dependence.Therefore, for the working roll roll gap lubrication spray beam A that is used for roll gap lubrication, the present invention adopts low-pressure to spray, and effectively reduces the disturbance of spraying causing with steel, has improved band steel stability.For the working roll cooling and cleaning spray beam B and intermediate calender rolls and backing roll cooling and the cleaning spray beam D that are used to clean and cool off, its pressure does not act directly on the band steel on the one hand, and, increase pressure and can effectively improve cleaning and cooling effect, therefore, adopt big expulsion pressure.Although the cooling of band steel and cleaning spray beam C have cleaning and cooling effect, consider that it injects directly on the band steel, for avoiding being with the steel shake, adopts lower pressure to spray; On the other hand, because in the milling train outlet, the dirt of belt steel surface mainly is the dirt that washes from the roll upper punch, therefore, can not affect its cleaning effect with lower pressure.
The invention has the beneficial effects as follows: guaranteed the belt steel surface cleaning, improved band steel stability.
Description of drawings
Fig. 1 is 1～No. 4 emulsion of rolling mill spray beam layout drawing (last frame emulsion adopts the meticulous cooling of multi-region and lubricated) in the present invention's six roll five-machine frame tandem rollings.
Fig. 2 is the layout drawing of three sections shower nozzles being provided with of the lubricated spray beam A1 of going up of working roll roll gap lubrication spray beam A
Among the figure: 1-lower support roller, intermediate calender rolls under the 2-, 3-bottom working roll, 4-top working roll, the last intermediate calender rolls of 5-, 6-top backing up roll, 7-rolling centerline, the 8-first emulsion pipe, the 9-second emulsion pipe.
The specific embodiment
As shown in Figure 1, guarantee to be with the stable emulsion injection method of steel in the plate continuous rolling process as thin as a wafer, the working roll roll gap lubrication spray beam A of 1～No. 4 milling train is arranged in the frame entrance side in the six roll five-machine frame tandem rollings, working roll roll gap lubrication spray beam A is made up of last lubricated spray beam A1 and following lubricated spray beam A2, going up lubricated spray beam A1 is positioned on the rolling centerline 7, lubricated spray beam A2 is positioned under the rolling centerline 7 down, go up lubricated spray beam A1, be respectively equipped with three sections shower nozzles on the lubricated spray beam A2 down, according to three sections controls of the wide branch of plate, respectively bottom working roll 3 is sprayed emulsion with the roll gap district of top working roll 4, emulsion adopts 0.3～0.4Mpa low-pressure to spray (bound of emulsion pressure with and interval value can both realize the present invention);
As shown in Figure 2, go up lubricated spray beam A1 and be provided with three sections shower nozzles, about two sections shower nozzles (every section shower nozzle is made up of the 2-10 shower nozzle) be connected (as shown in Figure 2 with the first emulsion pipe 8 respectively, effect is to regulate jet width, as two sections shower nozzles about closing, one section shower nozzle sprays in the middle of then having only), middle one section shower nozzle (every section shower nozzle is made up of the 2-10 shower nozzle) is connected with the second emulsion pipe 9.
The cooling of the working roll of 1～No. 4 milling train and cleaning spray beam B are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, working roll cooling and cleaning spray beam B are by top working roll cooling and cleaning spray beam B1, bottom working roll cooling and cleaning spray beam B2 form, top working roll cooling and cleaning spray beam B1 are positioned on the rolling centerline 7, bottom working roll cooling and cleaning spray beam B2 are positioned under the rolling centerline 7, top working roll cooling and cleaning spray beam B1, be respectively equipped with three sections shower nozzles on bottom working roll cooling and the cleaning spray beam B2, according to three sections controls of the wide branch of plate, respectively to top working roll 4, the roll surface of bottom working roll 3 sprays emulsion, and the emulsion expulsion pressure is 0.5-0.7Mpa (bound of emulsion pressure with and interval value can both realize the present invention);
The cooling of the intermediate calender rolls of 1～No. 4 milling train and backing roll and cleaning spray beam D are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, intermediate calender rolls and backing roll cooling and cleaning spray beam D are by upper intermediate calender rolls and backing roll cooling and cleaning spray beam D1, lower intermediate calender rolls and backing roll cooling and cleaning spray beam D2 form, upper intermediate calender rolls and backing roll cooling and cleaning spray beam D1 are positioned on the rolling centerline 7, lower intermediate calender rolls and backing roll cooling and cleaning spray beam D2 are positioned under the rolling centerline 7, upper intermediate calender rolls and backing roll cooling and cleaning spray beam D1, not segmentation of shower nozzle control on lower intermediate calender rolls and backing roll cooling and the cleaning spray beam D2, respectively to the roll gap district of upper intermediate calender rolls 5 with top backing up roll 6, lower intermediate calender rolls 2 sprays emulsion with the roll gap district of lower support roll 1, and the emulsion expulsion pressure is 0.8-0.9Mpa (bound of emulsion pressure with and interval value can both realize the present invention);
The cooling of the band steel of 1～No. 4 milling train and cleaning spray beam C are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, the cooling of band steel and cleaning spray beam C are by upper band steel cooling and cleaning spray beam C1, lower band steel cooling and cleaning spray beam C2 form, on be positioned at top with steel with steel cooling and cleaning spray beam C1, be positioned at below with steel with steel cooling and cleaning spray beam C2 down, upper band steel cooling and cleaning spray beam C1, be respectively equipped with three sections shower nozzles on lower band steel cooling and the cleaning spray beam C2, according to three sections controls of the wide branch of plate, respectively to spraying emulsion with the upper surface of steel and lower surface, emulsion adopts 0.3～0.4Mpa low-pressure to spray (bound of emulsion pressure with and interval value can both realize the present invention).
Last frame emulsion in the six roll five-machine frame tandem rollings adopts multi-region spray cooling and lubricated.
Claims (1)
1. guarantee to be with the stable emulsion injection method of steel in the plate continuous rolling process as thin as a wafer, it is characterized in that: the working roll roll gap lubrication spray beam of 1～No. 4 milling train is arranged in the frame entrance side in the six roll five-machine frame tandem rollings, working roll roll gap lubrication spray beam is made up of last lubricated spray beam and following lubricated spray beam, going up lubricated spray beam is positioned on the rolling centerline (7), lubricated spray beam is positioned under the rolling centerline (7) down, go up lubricated spray beam, be respectively equipped with three sections shower nozzles on the lubricated spray beam down, according to three sections controls of the wide branch of plate, respectively bottom working roll (3) is sprayed emulsion with the roll gap district of top working roll (4), emulsion adopts 0.3～0.4Mpa low-pressure to spray;
The cooling of the working roll of 1～No. 4 milling train and cleaning spray beam are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, working roll cooling and cleaning spray beam are by top working roll cooling and cleaning spray beam, bottom working roll cooling and cleaning spray beam form, top working roll cooling and cleaning spray beam are positioned on the rolling centerline (7), bottom working roll cooling and cleaning spray beam are positioned under the rolling centerline (7), top working roll cooling and cleaning spray beam, be respectively equipped with three sections shower nozzles on bottom working roll cooling and the cleaning spray beam, according to three sections controls of the wide branch of plate, respectively to top working roll (4), the roll surface of bottom working roll (3) sprays emulsion, and the emulsion expulsion pressure is 0.5-0.7Mpa;
The cooling of the intermediate calender rolls of 1～No. 4 milling train and backing roll and cleaning spray beam are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, intermediate calender rolls and backing roll cooling and cleaning spray beam are by upper intermediate calender rolls and backing roll cooling and cleaning spray beam, lower intermediate calender rolls and backing roll cooling and cleaning spray beam form, upper intermediate calender rolls and backing roll cooling and cleaning spray beam are positioned on the rolling centerline (7), lower intermediate calender rolls and backing roll cooling and cleaning spray beam are positioned under the rolling centerline (7), upper intermediate calender rolls and backing roll cooling and cleaning spray beam, not segmentation of shower nozzle control on lower intermediate calender rolls and backing roll cooling and the cleaning spray beam, respectively to the roll gap district of upper intermediate calender rolls (5) with top backing up roll (6), lower intermediate calender rolls (2) sprays emulsion with the roll gap district of lower support roll (1), and the emulsion expulsion pressure is 0.8-0.9Mpa;
The cooling of the band steel of 1～No. 4 milling train and cleaning spray beam are arranged in the frame outlet side in the six roll five-machine frame tandem rollings, the cooling of band steel and cleaning spray beam are by upper band steel cooling and cleaning spray beam, lower band steel cooling and cleaning spray beam form, on be positioned at top with steel with steel cooling and cleaning spray beam, be positioned at below with steel with steel cooling and cleaning spray beam down, upper band steel cooling and cleaning spray beam, be respectively equipped with three sections shower nozzles on lower band steel cooling and the cleaning spray beam, according to three sections controls of the wide branch of plate, respectively upper surface and lower surface with steel are sprayed emulsion, emulsion adopts 0.3～0.4Mpa low-pressure to spray.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610125554XA CN100443206C (en) | 2006-12-22 | 2006-12-22 | Method of maintaining stable emulsion spraying during continuous relling of sheet |
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| CNB200610125554XA CN100443206C (en) | 2006-12-22 | 2006-12-22 | Method of maintaining stable emulsion spraying during continuous relling of sheet |
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| CN1986094A CN1986094A (en) | 2007-06-27 |
| CN100443206C true CN100443206C (en) | 2008-12-17 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101745544B (en) * | 2010-01-04 | 2011-08-31 | 湖南华菱涟源钢铁有限公司 | Method for controlling transverse thickness difference of medium-low grade electrical steel |
| CN102172642B (en) * | 2010-12-30 | 2013-01-16 | 一重集团大连设计研究院有限公司 | Spray nozzle fault detection method for finely cooling device of cold rolling mill |
| CN102513386B (en) * | 2011-12-30 | 2015-07-22 | 宝山钢铁股份有限公司 | Emulsion spraying method and emulsion spraying system for producing steel types with yield strength higher than 400MPa |
| CN103567237B (en) * | 2012-07-24 | 2015-07-22 | 宝山钢铁股份有限公司 | Cold rolling direct spraying method of emulsified liquid |
| CN102744261B (en) * | 2012-08-08 | 2014-07-23 | 莱芜钢铁集团有限公司 | Method and device for avoiding working fluid backflow |
| CN105382041B (en) * | 2015-11-30 | 2018-06-08 | 中冶南方工程技术有限公司 | A kind of 18 cold mill emulsified liquid injection gears and its application |
| 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 |
| CN110340162A (en) * | 2019-06-06 | 2019-10-18 | 铜陵精迅特种漆包线有限责任公司 | A kind of aluminium bar production system |
| CN111822519A (en) * | 2020-08-26 | 2020-10-27 | 武汉钢铁有限公司 | Cold continuous rolling mill roller cooling control system |
Citations (5)
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|---|---|---|---|---|
| US4061010A (en) * | 1974-06-11 | 1977-12-06 | Alcan Research And Development Limited | Apparatus for cooling the rolls of rolling mills |
| CN2236371Y (en) * | 1995-09-20 | 1996-10-02 | 宝山钢铁(集团)公司 | Coolant emulsion liquid blowing remover for cold rolled band steel |
| JP2000094025A (en) * | 1998-09-18 | 2000-04-04 | Nkk Corp | Method for supplying rolling oil in could rolling mill |
| JP2003266116A (en) * | 2003-02-14 | 2003-09-24 | Jfe Steel Kk | Method for supplying rolling oil in cold rolling mill |
| US20060156778A1 (en) * | 2005-01-20 | 2006-07-20 | Ondrovic Jay J | Method and apparatus for controlling strip shape in hot rolling mills |
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2006
- 2006-12-22 CN CNB200610125554XA patent/CN100443206C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061010A (en) * | 1974-06-11 | 1977-12-06 | Alcan Research And Development Limited | Apparatus for cooling the rolls of rolling mills |
| CN2236371Y (en) * | 1995-09-20 | 1996-10-02 | 宝山钢铁(集团)公司 | Coolant emulsion liquid blowing remover for cold rolled band steel |
| JP2000094025A (en) * | 1998-09-18 | 2000-04-04 | Nkk Corp | Method for supplying rolling oil in could rolling mill |
| JP2003266116A (en) * | 2003-02-14 | 2003-09-24 | Jfe Steel Kk | Method for supplying rolling oil in cold rolling mill |
| US20060156778A1 (en) * | 2005-01-20 | 2006-07-20 | Ondrovic Jay J | Method and apparatus for controlling strip shape in hot rolling mills |
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| CN1986094A (en) | 2007-06-27 |
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