CN107309275A - A kind of roll gap lubrication method of ultra-thin size hot-rolled strip production - Google Patents
A kind of roll gap lubrication method of ultra-thin size hot-rolled strip production Download PDFInfo
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- CN107309275A CN107309275A CN201710623517.XA CN201710623517A CN107309275A CN 107309275 A CN107309275 A CN 107309275A CN 201710623517 A CN201710623517 A CN 201710623517A CN 107309275 A CN107309275 A CN 107309275A
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- oil mass
- rolling
- roll gap
- roll
- gap lubrication
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/06—Lubricating, cooling or heating rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention belongs to Hot Rolling Strip lubricating area, a kind of roll gap lubrication method of ultra-thin size hot-rolled strip production is specifically provided.The present invention program is parted hair portion, three sections of oil supply in middle part and afterbody during roll gap lubrication, and without delay after rolled piece penetrates frame, that is, opens roll gap lubrication, and head is less than middle part to oil mass to oil mass, and afterbody is not more than middle part to oil mass to oil mass.Beneficial effect is to ensure that made-up belt head does not produce skidding, smoothly bitten on the basis of milling train, middle part is bigger to fuel-flow control leeway, can further improve to oil mass in the middle part of belt steel rolling, roll-force is lower compared to existing roll gap lubrication method；Sting steel and reduce roll wear when throwing steel, it is to avoid milling train shakes, and extends the rolling cycle, and roller consumption is lower, while the ratio of thin slab product is higher, reduce transition ratio, organization of production is easier；When producing high load capacity kind, rolling mill vibration is taken place frequently, and the problem of equipment fault is more is controlled.
Description
Technical field
The invention belongs to Hot Rolling Strip lubricating area, a kind of roll gap of ultra-thin size hot-rolled strip production is specifically provided
Lubricating method.
Background technology
Rolling lubrication earliest be applied to it is cold rolling, main purpose be reduction roll-force, change deformation condition, improve product matter
Amount.The technology is also gradually generalized to hot rolling, application is tested by QUAKER companies and succeeded in the U.S. first within 1954, in Europe
Continent, Japan are developed rapidly.In the 1990s, Baosteel has introduced lubrication in heat-rolling process technology first.With the technology
Rapid to promote, in recent ten years, the old producing line transformation of newly-built hot rolling producing line and part has been respectively mounted hot rolling roll gap lubricating utensil.
Using lubrication in heat-rolling process not only to mitigate rolling load, reduction energy consumption, reduction roll wear, improve productivity ratio,
Improving strip surface quality etc. has obvious effect, huge economic benefit can be obtained, while to follow-up cold rolling process, such as connecting
Continuous pickling process, also there is obvious benefit.In view of the distinct economic created using hot-rolling lubricating rolling technique, has inspired pin
Research is deeply developed to hot-rolling lubricating rolling technique.
1) developmental research of HOT-ROLLING OIL, mainly follows the differentiation of roll material, the rolling that rolled piece characteristic is individually developed
The high alkalinity acylate ROLLING OIL that rattan et al. is developed for high-speed steel roll after oil, such as Japan；For stainless steel easily and roll
The problem of bonding, develops the ROLLING OIL the kollag stable dispersion such as iron oxide, calcium carbonate, synthetic mica.
2) research of hot-rolling lubricating rolling device, from the point of view of current application, lubrication in heat-rolling process by lubrication point can minute
For backing roll lubrication and working roll lubrication；It can be divided into nozzle-type, Brush type, felt formula and atomizing etc. by the mode of action.
3) hot-rolling lubricating rolls the research of application technology, is conceived to and how to combine itself milling train, kind, specification preferably in fact
The using effect of existing roll gap lubrication, while ensureing the original thickness of product, section configuration and flatness control precision.
Roll gap lubrication technology is very ripe in the application of hot rolling, effectively reduces roll wear, extends the rolling cycle, drop
Low roller consumption, improves strip surface quality, while reducing production cost, has expanded the production of many kinds, such as pickling
Steel.Especially thin material is produced, and roll gap lubrication improves deformed area strip stress state, effectively reduces roll-force, it is ensured that thin
Material is stably produced, but the production of Limit specifications hot-rolled product still suffers from rolling mill vibration, and equipment failure rate is higher, rolling
Cycle is shorter, and the problem of transition material is more is, it is necessary to further solve.And current roll gap lubrication application method is difficult to solve these
The problem of delay, still need to further improvement.
Existing roll gap lubrication system oil supply mode in process of production separately, in, three sections of tail, control mode one kind is head
Middle tail gives consistent oil mass；Another is all not oil supply and only head or afterbody not oil supply, the control of middle part oil supply end to end
Mode.All there is larger drawback in thin material production in two kinds of control modes.
The first control mode：Head, middle and end are consistent to oil mass, after the oil supply of head, and angle of friction reduces, and easily occur skidding difficult
The problem of to bite, cause to be restricted to oil mass, roll-force reduction is less, rolling is difficult, milling train vibrations are serious.
Second of control mode：Not oil supply end to end, middle part oil supply, roll-force is significantly reduced in the operation of rolling, drawn
Play plate shape change to be made up, it is necessary to reduce bending roller force, such as excessive change for causing plate shape of the roll-force range of decrease can not be by bending roller force
Make up, serious plate shape problem will be produced, or even cause steel scrap.Changed the shadow with bending roller force by plate shape to oil mass for this middle part
Ring, also restrained, the roll-force range of decrease is limited, milling train vibrations are same serious.
To ensure that production is stable, the roll-force range of decrease is limited caused by current control mode, and rolling mill vibration control effect has
Limit, and roll wear is very fast, the rolling cycle is shorter.The injury that rolling mill vibration is caused to equipment is more, equipment wearing increase,
Electric equipment interface loosens.Cause production process to be interrupted because of equipment fault, cause steel scrap, even result in producing line production for a long time
Interrupt, cause serious economic loss.
Thin Specs hot rolling merchantable timber profitability is relatively strong, is the focus that current most hot rolling mills fall over each other production, roll gap
Lubrication serves vital effect wherein.Therefore, the roll gap lubrication oil supply side in the size hot-rolled strip production of Study of Thin
Formula has highly important production meaning.
The content of the invention
In order to solve the above problems, it is an object of the present invention to provide a kind of more preferable controlled rolling power of energy, further reduce and roll
The method of the roll gap lubrication of roller abrasion.
The present invention provides a kind of roll gap lubrication method of ultra-thin size hot-rolled strip production.
A kind of roll gap lubrication method of ultra-thin size hot-rolled strip production, the roll gap lubrication method parted hair portion, middle part and
Three sections of oil supply of afterbody, and without delay after rolled piece penetrates frame, that is, roll gap lubrication is opened, head is given to oil mass less than middle part
Oil mass, afterbody is not more than middle part to oil mass to oil mass.
Further, the strip that 2.00 millimeters are less than to thickness is produced, and the second rolling mill (F2) head oil mass is 40ml/
Min, middle part oil mass are that 50~100ml/min, afterbody oil mass are 40ml/min；3rd rolling mill (F3) head oil mass is 40ml/
Min, middle part oil mass are that 70~140ml/min, afterbody oil mass are 40ml/min；4th rolling mill (F4) head oil mass is 40ml/
Min, middle part oil mass are that 60~130ml/min, afterbody oil mass are 40ml/min；5th rolling mill (F5) head oil mass is 40ml/
Min, middle part oil mass are that 50~80ml/min, afterbody oil mass are 40ml/min.
The mentality of designing of the present invention program is：In order to further reduce roll-force, reduce roll wear, middle part need to
More oil, but if head not oil supply, then middle part oil supply is limited by the roll-force range of decrease, and the leeway of regulation is limited.Cause
This, head needs oil supply, and head is less than middle part to oil mass to oil mass.In order to sting steel and reduce when throwing steel to the abrasion of roll and
Impact, before strip is bitten, i.e., oil supply immediately when strip enters roll, through frame after without delay, that is, open roll gap
Lubrication.
The beneficial effects of the present invention are：1) ensure that made-up belt head does not produce skidding, smoothly bite milling train, middle part is to oil mass
Adjust leeway bigger, can further improve to oil mass in the middle part of belt steel rolling, roll-force is compared to existing roll gap lubrication method more
It is low.2) roll-force is further reduced, steel is stung and reduces roll wear when throwing steel, it is to avoid milling train shakes, and extends the rolling cycle, roller consumption
It is lower, while the ratio of thin slab product is higher, transition ratio is reduced, organization of production is easier.3) when producing high load capacity kind,
Rolling mill vibration is taken place frequently, and the problem of equipment fault is more is controlled.
Brief description of the drawings
The contrast of oil supply technique and existing oil supply technique in Fig. 1 the present invention program
Embodiment
The invention will be further elaborated by the following examples, but does not limit the present invention.It is every without departing substantially from the present invention
The change of design or equivalent substitute are included within protection scope of the present invention.
Specific steel grade specification is different and has differences, it is ensured that rolling is not present on the basis of vibration, and rolling is reduced as far as possible
The oil amount of coming into operation, it is ensured that equipment safety, on the premise of production is stable, comprehensive production cost control is minimum, need to be by groping for a long time.
By taking Thin Specs steel for container SPA-H as an example.
It is super less than 2.00 millimeters for thickness respectively with the oil supply technique two schemes of existing oil supply technique and the present invention
Roll gap lubrication is carried out in the production process of Thin Specs hot-strip, according to the oil supply technique shown in Fig. 1, before strip is bitten,
Oil supply immediately when i.e. strip enters roll, through frame after without delay, that is, open roll gap lubrication.Existing oil supply technique is used
Fixed oil mass；And oil supply technique part three-stage oil supply, i.e. head, three sections of oil supply pair in middle part and afterbody, F2~F5 of the present invention
The roll gap oil supply situation of frame sees below Tables 1 and 2.
The existing oil supply technique of table 1
The oil supply technique of the present invention of table 2
Effect of rolling to two kinds of techniques is compared, after adopting new technology, F2~F4 frames
Rolling milimeter number slightly extend, the rolling milimeter number of F5 frames without significant change, main effect of rolling be improve
The rolling lubrication problem of roller surface when steel throws steel is stung, roll punching is reduced
Hit, improve roll rolling condition, be shown in Table 3.
The existing oil supply technique of table 3 and oil supply technique of the present invention rolling milimeter number compare
| F2 | F3 | F4 | F5 | |
| Existing oil supply technique rolls milimeter number | 9.49 | 19.05 | 28.54 | 26.83 |
| Oil supply technique of the present invention rolls milimeter number | 9.79 | 20.76 | 31.82 | 26.77 |
| Roll milimeter number amplification | 0.3 | 1.7 | 3.3 | -0.1 |
Statistical survey is carried out to the rollers of two schemes consumption, using the roll gap lubrication method oil supply of the present invention, F2 rollers consumption by
0.1636 (kg/t) is reduced to 0.1586 (kg/t)；F3-4 rollers consumption is reduced to 0.1436 (kg/t) by 0.1459 (kg/t)；F5 rollers
Consumption is without significant change.
Claims (2)
1. a kind of roll gap lubrication method of ultra-thin size hot-rolled strip production, it is characterised in that：Three sections of parted hair portion, middle part and afterbody
Oil supply, and without delay after rolled piece penetrates frame, that is, roll gap lubrication is opened, head is less than middle part to oil mass, tail to oil mass
Portion is not more than middle part to oil mass to oil mass.
2. the roll gap lubrication method that ultra-thin size hot-rolled strip is produced according to claim 1, it is characterised in that：It is small to thickness
Produced in 2.00 millimeters of strips, the second rolling mill (F2) head oil mass is that 40ml/min, middle part oil mass are 50~100ml/
Min, afterbody oil mass are 40ml/min；3rd rolling mill (F3) head oil mass is that 40ml/min, middle part oil mass are 70~140ml/
Min, afterbody oil mass are 40ml/min；4th rolling mill (F4) head oil mass is that 40ml/min, middle part oil mass are 60~130ml/
Min, afterbody oil mass are 40ml/min；5th rolling mill (F5) head oil mass is that 40ml/min, middle part oil mass are 50~80ml/
Min, afterbody oil mass are 40ml/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710623517.XA CN107309275A (en) | 2017-07-27 | 2017-07-27 | A kind of roll gap lubrication method of ultra-thin size hot-rolled strip production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710623517.XA CN107309275A (en) | 2017-07-27 | 2017-07-27 | A kind of roll gap lubrication method of ultra-thin size hot-rolled strip production |
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| CN107309275A true CN107309275A (en) | 2017-11-03 |
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| CN201710623517.XA Pending CN107309275A (en) | 2017-07-27 | 2017-07-27 | A kind of roll gap lubrication method of ultra-thin size hot-rolled strip production |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111027001A (en) * | 2019-11-29 | 2020-04-17 | 河钢乐亭钢铁有限公司 | System and method for calculating roll consumption of hot rolling roll |
| CN111389912A (en) * | 2020-03-16 | 2020-07-10 | 武汉钢铁有限公司 | Control method for surface pitting defects of medium-carbon low-alloy ultrathin strip steel in short-process rolling |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000084602A (en) * | 1998-09-11 | 2000-03-28 | Kawasaki Steel Corp | Manufacture of hot rolled stainless steel sheet |
| JP2002273503A (en) * | 2001-03-19 | 2002-09-25 | Kawasaki Steel Corp | Hot lubricative finish rolling method |
| JP2003094104A (en) * | 2001-09-21 | 2003-04-02 | Nippon Steel Corp | Method for lubrication feeding in hot rolling |
| CN101693256A (en) * | 2009-11-05 | 2010-04-14 | 北京科技大学 | Hot-rolling lubricating method for improving wear difference among upper working rolls and lower working rolls |
-
2017
- 2017-07-27 CN CN201710623517.XA patent/CN107309275A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000084602A (en) * | 1998-09-11 | 2000-03-28 | Kawasaki Steel Corp | Manufacture of hot rolled stainless steel sheet |
| JP2002273503A (en) * | 2001-03-19 | 2002-09-25 | Kawasaki Steel Corp | Hot lubricative finish rolling method |
| JP2003094104A (en) * | 2001-09-21 | 2003-04-02 | Nippon Steel Corp | Method for lubrication feeding in hot rolling |
| CN101693256A (en) * | 2009-11-05 | 2010-04-14 | 北京科技大学 | Hot-rolling lubricating method for improving wear difference among upper working rolls and lower working rolls |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111027001A (en) * | 2019-11-29 | 2020-04-17 | 河钢乐亭钢铁有限公司 | System and method for calculating roll consumption of hot rolling roll |
| CN111027001B (en) * | 2019-11-29 | 2023-08-25 | 河钢乐亭钢铁有限公司 | System and method for calculating roll consumption of hot rolling roll |
| CN111389912A (en) * | 2020-03-16 | 2020-07-10 | 武汉钢铁有限公司 | Control method for surface pitting defects of medium-carbon low-alloy ultrathin strip steel in short-process rolling |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20171103 |
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