CN105363811B - Strip steel cooling process method and device between a kind of sour rolling mill frame - Google Patents
Strip steel cooling process method and device between a kind of sour rolling mill frame Download PDFInfo
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- CN105363811B CN105363811B CN201510967859.4A CN201510967859A CN105363811B CN 105363811 B CN105363811 B CN 105363811B CN 201510967859 A CN201510967859 A CN 201510967859A CN 105363811 B CN105363811 B CN 105363811B
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- emulsion
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Classifications
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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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0233—Spray nozzles, Nozzle headers; Spray systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2267/00—Roll parameters
- B21B2267/12—Roll temperature
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention discloses strip steel cooling process method and device between a kind of sour rolling mill frame, above the strip steel before the 3rd, 4,5 frames, each one bar of emulsion of setting sprays beam, sprinkling emulsion is on strip steel, wherein the 3rd, the emulsion of the newly-increased spray beam injection before 4 frames is controlled by the emulsion unit of 14 frames, and the emulsion of the newly-increased spray beam before the 5th frame is controlled by the emulsion unit of the 5th frame.The present invention can optimize emulsifying liquid cooling system, reduce emulsion total flow, while reducing crude oil for emulsion consumption, extend emulsion usage cycles, while can substantially reduce unit produces the probability that heat is scratched, so as to reduce enterprise's production capacity, improve product quality.
Description
Technical field
The present invention relates to steel rolling equipment field, strip steel cooling process method and dress between specifically a kind of sour rolling mill frame
Put.
Background technology
Sour rolling mill technical cooling：Technical cooling is a key character of cold rolling of strip steel process, because strip steel is in rolling
During will produce substantial amounts of frictional work and deformation heat.The basic function of technical cooling is that to be furnished with rolling mill practice desired concn
Emulsion, is ejected on roll and strip steel by the nozzle in spray beam under conditions of certain flow and pressure, it is ensured that rolling
During roll and strip steel operating temperature, while reduce friction produce rolling force consumption.
At present, domestic cold rolling mill emulsion system generally when mill milling speed improve to a certain extent after, in order to ensure
Technical cooling ability, emulsifying flow quantity must be constantly in 100% flow, cause emulsion consumption, desalted water, electric energy equal energy source to be situated between
Matter consumption increases, and production cost is also increasing, and is unfavorable for enterprise's cost declining.
Content of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide strip steel cooling technique side between a kind of sour rolling mill frame
Method and device, concrete technical scheme are as follows：
Strip steel cooling process method between a kind of sour rolling mill frame,
1) above the strip steel before the 3rd, 4, No. 5 frames, each one bar of emulsion of setting is newly-increased sprays beam, and sprinkling emulsion is to band
On steel, the emulsion of the newly-increased spray beam injection before the wherein the 3rd, No. 4 frames is controlled by the emulsion unit of 1-4 frames, the 5th machine
The emulsion of the newly-increased spray beam before frame is controlled by the emulsion unit of No. 5 frame；
2) flow for increasing each nozzle on spray beam newly is 100l/min, and the total flow of emulsion system carried by 37000l/min
To 38000l/min；
3) it is 5 that the frame supply pump quantity of 1-4 rolling mills emulsion unit is increased by 3；
4) each frame entrance and exit emulsion injection beam and the pressure roller with emulsion ejection function are all by three sections of groups
Into, it is divided into two kinds of control models, when strip width is less than 1450mm, only interlude injection, it is cold to be that ribbon steel is lubricated
But control；When strip width is more than 1450mm, interlude and two side spray beams spray simultaneously, are that wider band steel is lubricated cooling
Control；
5) emulsion quantity delivered of the emulsifying liquid supply system by the instruction according to second computer to emitted dose zones of different
Carry out flow-control.
The present invention further discloses a kind of device for realizing methods described, each above the strip steel before the 3rd, 4,5 frames
The newly-increased spray beam of one emulsion is set, sprinkling emulsion on strip steel, the wherein the 3rd, the emulsifying of newly-increased spray beam injection before 4 frames
Liquid is controlled by the emulsion unit of 1-4 frames, the emulsion unit of the emulsion of the newly-increased spray beam before the 5th frame by the 5th frame
Control, it is 5 that the frame supply pump quantity of 1-4 rolling mill emulsion units is increased by 3；Each frame entrance and exit emulsifying
Liquid spray beam and the pressure roller with emulsion ejection function are all constituted by three sections, respectively interlude and both sides section.
The present invention can optimize emulsifying liquid cooling system, reduce emulsion total flow, while crude oil for emulsion consumption is reduced,
Extend emulsion usage cycles, while can substantially reduce unit produces the probability that heat is scratched, so as to reduce enterprise's production capacity,
Improve product quality.
Description of the drawings
Fig. 1 is that emulsion enters deformed area schematic diagram；
Fig. 2 is the temperature distribution state schematic diagram of roll when perfect condition is rolled；
Fig. 3 is newly-increased " C beams " emulsion injection beam schematic diagram before No. 3 frames；
Fig. 4 is newly-increased " C beams " emulsion injection beam schematic diagram before No. 5 frames；
Fig. 5 is the newly-increased spray beam sketch of overall emulsion system.
Specific embodiment
The present invention is illustrated below in conjunction with the accompanying drawings.
Emulsion system acts primarily as the effect in terms of four in sour rolling mill：One is to play lubrication to make in the operation of rolling
With playing reduction rolling power, extend the effect of roll campaign；Two is can to take away strip steel and roller surface in the operation of rolling to produce
Raw dust, it is ensured that roll the good surface cleaning of rear strip steel；Three is to improve the roller heat convex degree learning in the operation of rolling, makes to roll
Strip steel obtains good plate shape precision afterwards；Four is to take away frictional heat and stocking plastic deformation generation in the thermal balance of roll gap
Most of heat, this are also that emphasis of the present invention optimizes project.
Being deformed heat during rolling raises can strip steel and the temperature of roll.Due to strip steel with roll frictional heating amount also very
Greatly, therefore the temperature of contact surface will also be raised.The friction occurred under high pressure and high speed is possible to produce local or instantaneous
High temperature, can thus make strip steel and roll heat up.Too high temperature can make the lubricant viscosity of emulsion thinning, and may
Make the strip surface of unlubricated film come out, difficulty is brought to rolling lubrication, cause product quality problems occur.
State of the emulsion in contact in rolling
Very thin lubricating oil film is only needed to when cold rolling can reach the effect for reducing friction.If oil film thickness exceedes definite value,
Lubrication can then occur and produce skidding.When emulsion with metal watch from very high pressure to temperature very high (more than 100 DEG C)
When face is sprayed, with the vaporization of water, oil is directly spread on belt steel surface, as shown in Figure 1.
In the ideal situation, when being deformation of rolled wire area with No. 3 positions for No. 2, roller surface temperature rapidly rises, and can reach
To nearly 500 DEG C of high temperature, but when roll goes to No. 4 positions and during No. 5 positions after the emulsion spray cooling of q.s, roll
Surface temperature can dramatic decrease to normal temperature level.Rolling heat all walk by emulsified liquid band, as shown in Figure 2.Therefore necessary
Ensure the cooling performance of emulsion.Because when temperature is more than 160 DEG C～180 DEG C, film viscosity is thinning, and has Evaporation Phenomenon to send out
Raw, cause film lubrication skewness, form the lubricant effect of interruption, and then make product quality problems generation heat occur and draw
Wound.Emulsifying flow quantity, the temperature difference of emulsion turnover and emulsion cover the region of strip steel and determine emulsion cooling capacity
Size.
The temperature difference of the wherein turnover of emulsion was had determined according to working condition in the design phase.For extracting emulsion
And the pressure roller position with steel functional is fixed with emulsion spray cooling, it is one that emulsion can cover the backflow area in strip steel region
Fixed.In order to meet technological lubrication effect, the emitted dose of the emulsion cooling effect required to reach rolling can only be increased.But breast
Change the loss that on the one hand increased emulsion that increases of liquid emitted dose, on the one hand also need to increase each equipment in emulsion system
Ability and energy consumption.Therefore the cooling for how improving emulsion in high-speed rolling be in the weight for ensure roll coolant it
Weight.
At present, after mill milling speed is improved to a certain extent, in order to ensure technical cooling ability, emulsifying flow quantity
Ability whole 100% that must be directly in 100% flow, i.e. pump is run, and causes emulsion consumption, desalted water, electric energy equal energy source
Dielectric dissipation increases, and production cost is also increasing, and is unfavorable for enterprise's cost declining.
The present invention can be rolled in level system in acid by one article of each setting above the strip steel before the 3rd, 4,5 frames individually to be controlled
The methods such as the newly-increased spray beam of the emulsion of system, optimize emulsifying liquid cooling system scheme so that strip quality has obtained appropriate carrying
Rise, while production cost (including ROLLING OIL consumption, ROLLING OIL usage cycles, desalted water, electric energy etc.) has also obtained effective reduction.
In order to obtain more preferable lubrication performance and less consumption during rolling, the three cold rolling emulsions in conventional design
Following optimization design is carried out on the basis of the spray beam of system and frame internal emulsification liquid：
1) above the strip steel before the 3rd, 4,5 frames, one article of each setting can roll the emulsifying of individually control in level system in acid
Liquid spray beam " C beams ", sprinkling emulsion are shown in Fig. 3, Fig. 4, Fig. 5 on strip steel.Wherein the 3rd, the newly-increased spray beam injection before 4 frames
Emulsion be 1～4 frame emulsion unit control, the newly-increased spray beam before 5 frames by 5 frames emulsion unit control.
2) flow design for increasing each nozzle on spray beam newly is about 100l/min, and suitably reduces the stream of other spray beams
Amount, therefore the total flow of emulsion system is only a small amount of improves, and is carried to 38000l/min by 37000l/min.
3) increase of beam is correspondingly sprayed, and the quantity and supply capacity of emulsion system pump have been also carried out optimizing：1～4 rolling mill
It is 5 that the frame supply pump quantity of emulsion unit is increased by 3, and total flow has a small amount of increase, but controls more accurately, to disappear
Consumption reduces on the contrary；The ability of backwash filter has been also carried out appropriate raising；Reflux pump enters also according to the ability of supply pump
Coupling is gone；Vacuum filter has re-started coupling also according to overall emulsion circulating load.
4) each frame entrance and exit emulsion injection beam and the pressure roller with emulsion ejection function are all by three sections of groups
Into being divided into two kinds of control models.When strip width is less than 1450mm, only interlude injection, it is cold to be that ribbon steel is lubricated
But control；When strip width is more than 1450mm, interlude and two side spray beams spray simultaneously, are that wider band steel is lubricated cooling
Control.
5) emulsion quantity delivered of the emulsifying liquid supply system by the instruction according to second computer to emitted dose zones of different
Carry out flow-control, make emulsion quantity delivered on the basis of cooling capacity is met need not oepration at full load, and then reduce consume.
After increasing spray beam, substantially, the belt steel temperature of 1-5 frame entrances accordingly reduces cooling effect, and rolling temperature is good
In the optimal level of emulsion stability, relatively low temperature also makes emulsion be guaranteed from the stability that water is opened up for control,
And the temperature is the optimum working condition of ROLLING OIL, can meet requirement of the lubricity to most thin oil film thickness.The cooling energy of milling train
Power is improved, and can be greatly reduced strip steel and be produced the probability that heat is scratched, while the temperature for changing rolled band steel can improve production board
The control of shape, it is ensured that the quality of product.Temperature reduces, and the oil consumption of emulsion can also reduce, and reduce production cost.To sum up
Described, the present invention all serves certain effect to the lifting of product quality and the reduction of production cost.
The key point of the present invention
(1) above the strip steel before sour rolling mill milling train the 3rd, 4,5 frames, one article of each setting can be rolled in level system in acid
Individually the newly-increased spray beam " C beams " of the emulsion of control, sprays emulsion on strip steel, for cooling down.
(2) each frame entrance and exit emulsion injection beam and the pressure roller with emulsion ejection function are all by three sections of groups
Into being divided into two kinds of control models, be respectively acting on wide flat steel and ribbon steel.
(3) 3, the emulsion that 4 framves " C spray beam " spray is S1, S2 groove high-concentration emulsified liquid, the emulsifying that 5 framves " C sprays beam " spray
Liquid is S3 groove low concentration emulsions.
(4) increase supply pump quantity, improve emulsion injection flow control accuracy.
(5) instruction of second computer carries out flow-control to the emulsion quantity delivered of emitted dose zones of different, makes emulsifying
Liquid quantity delivered on the basis of cooling capacity is met need not oepration at full load, and then reduce emulsion consumption.
Claims (2)
1. strip steel cooling process method between a kind of sour rolling mill frame, it is characterised in that：
1) each above the strip steel before the 3rd, 4,5 frames the newly-increased spray beam of one bar of emulsion is set, sprinkling emulsion on strip steel, its
In the 3rd, the emulsion of newly-increased spray beam injection before 4 frames controlled by the emulsion unit of 1-4 frames, newly-increased before the 5th frame
The emulsion of spray beam is controlled by the emulsion unit of the 5th frame；
2) flow for increasing each nozzle on spray beam newly is 100l/min, the total flow of emulsion system by 37000l/min carry to
38000l/min；
3) it is 5 that the frame supply pump quantity of 1-4 rolling mills emulsion unit is increased by 3；
4) each frame entrance and exit emulsion injection beam and the pressure roller with emulsion ejection function are all constituted by three sections, point
For two kinds of control models, when strip width is less than 1450mm, only interlude injection is that ribbon steel is lubricated cooling control
System；When strip width is more than 1450mm, interlude and two side spray beams spray simultaneously, are that wider band steel is lubricated cooling control
System；
5) instruction according to second computer is carried out by emulsifying liquid supply system to the emulsion quantity delivered of emitted dose zones of different
Flow-control.
2. a kind of device for realizing claim 1 methods described, it is characterised in that：Each above the strip steel before the 3rd, 4,5 frames
The newly-increased spray beam of one emulsion is set, sprinkling emulsion on strip steel, the wherein the 3rd, the emulsifying of newly-increased spray beam injection before 4 frames
Liquid is controlled by the emulsion unit of 1-4 frames, the emulsion unit of the emulsion of the newly-increased spray beam before the 5th frame by the 5th frame
Control, it is 5 that the frame supply pump quantity of 1-4 rolling mill emulsion units is increased by 3；Each frame entrance and exit emulsion
Spray beam and the pressure roller with emulsion ejection function are all constituted by three sections, respectively interlude and both sides section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510967859.4A CN105363811B (en) | 2015-12-21 | 2015-12-21 | Strip steel cooling process method and device between a kind of sour rolling mill frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510967859.4A CN105363811B (en) | 2015-12-21 | 2015-12-21 | Strip steel cooling process method and device between a kind of sour rolling mill frame |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105363811A CN105363811A (en) | 2016-03-02 |
| CN105363811B true CN105363811B (en) | 2017-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510967859.4A Active CN105363811B (en) | 2015-12-21 | 2015-12-21 | Strip steel cooling process method and device between a kind of sour rolling mill frame |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003181517A (en) * | 2002-11-21 | 2003-07-02 | Jfe Engineering Kk | Cold-rolling method |
| 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 |
| JP2007160367A (en) * | 2005-12-15 | 2007-06-28 | Jfe Steel Kk | Cold rolling method, and cold rolling device |
| CN101537432A (en) * | 2008-03-21 | 2009-09-23 | 株式会社日立制作所 | Control device and control method for cooling frames of hot milling roll |
| CN102513386A (en) * | 2011-12-30 | 2012-06-27 | 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 |
| JP2014036979A (en) * | 2012-08-16 | 2014-02-27 | Nippon Steel & Sumitomo Metal | Rolling facility and rolling method |
-
2015
- 2015-12-21 CN CN201510967859.4A patent/CN105363811B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003181517A (en) * | 2002-11-21 | 2003-07-02 | Jfe Engineering Kk | Cold-rolling method |
| JP2007160367A (en) * | 2005-12-15 | 2007-06-28 | Jfe Steel Kk | Cold rolling method, and cold rolling device |
| 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 |
| CN101537432A (en) * | 2008-03-21 | 2009-09-23 | 株式会社日立制作所 | Control device and control method for cooling frames of hot milling roll |
| CN102513386A (en) * | 2011-12-30 | 2012-06-27 | 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 |
| JP2014036979A (en) * | 2012-08-16 | 2014-02-27 | Nippon Steel & Sumitomo Metal | Rolling facility and rolling method |
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| Publication number | Publication date |
|---|---|
| CN105363811A (en) | 2016-03-02 |
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