CN108284133A - A kind of single chassis reversable mill Ultrathin steel strip rolling mill practice method - Google Patents
A kind of single chassis reversable mill Ultrathin steel strip rolling mill practice method Download PDFInfo
- Publication number
- CN108284133A CN108284133A CN201810114475.1A CN201810114475A CN108284133A CN 108284133 A CN108284133 A CN 108284133A CN 201810114475 A CN201810114475 A CN 201810114475A CN 108284133 A CN108284133 A CN 108284133A
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- steel strip
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- 238000005096 rolling process Methods 0.000 title claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 28
- 239000010959 steel Substances 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims abstract description 21
- 238000003801 milling Methods 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000005097 cold rolling Methods 0.000 claims description 10
- 239000000839 emulsion Substances 0.000 claims description 3
- 241001391944 Commicarpus scandens Species 0.000 claims description 2
- 238000007127 saponification reaction Methods 0.000 claims description 2
- 210000000481 breast Anatomy 0.000 claims 2
- 239000000463 material Substances 0.000 abstract description 5
- 238000004806 packaging method and process Methods 0.000 abstract description 3
- 238000009500 colour coating Methods 0.000 abstract description 2
- 238000004945 emulsification Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 5
- 238000005554 pickling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000013000 roll bending Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000005028 tinplate Substances 0.000 description 2
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- 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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/24—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process
- B21B1/26—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 plates, strips, bands or sheets of indefinite length in a continuous or semi-continuous process by hot-rolling, e.g. Steckel hot mill
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to a kind of milling method of Ultrathin steel strip on single chassis reversable mill.Mainly using 2.75 ~ 3.0mm of thickness hot-strips as raw material, on 1150 milling trains that roll-force is 9000KN, become the Ultrathin steel strip of 0.13 ~ 0.2mm of thickness through six passes.The present invention compresses rolling pass by adjusting emulsification liquid status, increases percentage pass reduction, improves Tension Method, realizes the high-speed rolling of Ultrathin steel strip, to reduce working hour, substantially increase the production capacity and efficiency of milling train.It, can be with large-scale application in production by the production board shape of the method for the present invention rolling is good, thickness meets the requirements and stable quality, can meet requirement of the industries such as food packaging, chemical industry, home appliance panel, electronic information, color coating galvanized sheet to ultra-thin sheet material thickness.
Description
Technical field
The patent of invention belongs to steel plate strip cold rolling technology field, and in particular to a kind of cold-rolling process method of Ultrathin steel strip.
Background technology
In recent years, the total output of China's flat cold-rolled sheet is in cumulative year after year, but gradually slow trend, market is presented in its annual growth
Demand while increaseing slowly, Thin Specs, high intensity plank but favored more and more by vast enterprise, use
This Thin Specs raw material, have not only saved cost, but also do not influence performance, while can also make more more attractive packagings
Pot.Just to rolling equipment, more stringent requirements are proposed for this.At present hot rolled sheet rolling thickness it is minimum can only to 0.8 ~ 1.0mm,
If expecting the strip of more Thin Specs, the method using cold rolling is needed.Use hot-rolled coil for raw material, through overpickling, milling train,
The series of processes such as annealing, smooth, obtain functional, the more flexible cold-rolled strip of thickness.As tinplate packaging, antitheft
Door-plate and the most important raw material of the zinc-plated board industry of color coating, the thickness for how reducing flat cold-rolled sheet also become numerous enterprises research
Project.
A type of the single chassis reversable mill as cold-rolling mill, has tandem mill can not in terms of rolling thin gauge strip
The advantage of analogy.But traditional rolling mill practice does not embody this advantage in the Rolling Production of Thin Specs, ripe
Rolling mill practice its rolling thickness also can only achieve 0.25mm, roll-force then often will appear to the Ultrathin steel strip less than 0.2mm
Greatly, the problems such as deformed steel strip, thickness fluctuation be big, low production efficiency, easily broken band.
Invention content
In order to solve problem described above, the present invention provides a kind of milling method of ultra-thin gauge steel band, 2.5 ~
The hot rolling raw material of 3.0mm uses 6 passes, completes the operation of rolling that finished product thickness is 0.13 ~ 0.2mm, has compared original 7
The milling method of ~ 8 passages, substantially increases production efficiency, has saved rolling cost, improves the production capacity of milling train to greatest extent.
The technical scheme is that：
1）A kind of milling method of Ultrathin steel strip, main includes the raw material using 2.5 ~ 3.0mm, in the item of 450 ~ 900t of roll-force
Under part, by 6 passes, the Ultrathin steel strip of 0.13 ~ 0.2mm of thickness is rolled into.
2）After six passes, total reduction is 93 ~ 95%, wherein the reduction ratio of the first passage is 35 ~ 38%, second
The reduction ratio of passage is 35% ~ 39%, and third percentage pass reduction is 34% ~ 39%, and four-pass reduction ratio is 35% ~ 39%, the 5th He
6th percentage pass reduction is 39% ~ 43%.
3）During six passes, previous three passes are low or first gear, and rear four-pass is top gear, wherein the first passage
Speed be 200 ~ 300m/min, the second pass speed be 440 ~ 480m/min, third pass speed be 550 ~ 620m/min, the 4th
Pass speed is the pass speeds of 680 ~ 720m/min, the 5th and the 6th within the scope of 680 ~ 720m/min.
4）During six passes, first five passage unit tension is that toe-out is more than post-tensioning, wherein the first passage
Toe-out is 6.8 ~ 9.8kg/mm2, post-tensioning is 1.7 ~ 2.7kg/mm2, the second passage toe-out is 8.6 ~ 12.0kg/mm2, post-tensioning 6.0
~8.5 kg/mm2, third passage toe-out is 10.5 ~ 13.5kg/mm2, post-tensioning is 9.5 ~ 12.5kg/mm2, four-pass toe-out is
11.2~13.2kg/mm2, post-tensioning is 9.5 ~ 12.8kg/mm2, the 5th passage toe-out is 11.3 ~ 14.3kg/mm2, post-tensioning be 11.5 ~
14.5kg/mm2, more than toe-out, toe-out is 8.5 ~ 12.5kg/mm for last a time unit tension post-tensioning2, post-tensioning be 15.0 ~
18.0kg/mm2, so that roll-force is reduced using larger post-tensioning, strip is not easy to break.
5）During six passes, concentration of emulsion used is improved, a concentration of 3.5 ~ 4.5%, saponification number is 170 ~
190mgKOH/g, conductivity are less than 200us/cm, and emulsion E.S.I is 50 ~ 55%.
6）According to the rolling regulation and emulsification liquid status, final roll-force is located within the scope of 450 ~ 700t.
The beneficial effects of the invention are as follows：
1）By this milling method, product quality is stablized.The plate shape situation of a batch 0.16*920 specifications is tracked in rear process degreasing,
In there is the serious ratio of deformed steel strip and there was only 5.8%, and produce the product of this specification before adjustment, the ratio of deformed steel strip
It substantially all can be to 10% or more.
2）Using this milling method, motor load is reduced, host electric current is in 50 ~ 70% ranges, and Thin Specs roll before making
The problem that roll-force is big when processed, motor load is big is improved.In addition, reducing rolling time, production efficiency is improved, is made
Production capacity greatly improves, meet growing capacity requirements and milling train production efficiency it is low between contradiction so that tinplate
The production of substrate, anti-theft door plate and zinc-plated substrate is all saturated, and annual output realizes another breakthrough.
Specific implementation mode
Do that the present invention will be further described With reference to embodiment.
Embodiment 1, with Q195LD materials in this example, it is raw material, after pickling, roll-force that 2.75*760, which cuts hot-rolled coil,
9000KN in 1150 milling train units, becomes the steel band of 0.165mm by six passes.During six passes, roll
Speed processed gradually increases from 210 ~ 712m/min, and total reduction reaches 94.5%.
The specific operation of rolling is as shown in table 1.
1 embodiment of table, 1 six passes procedure parameter
Comparative example 1, equally with Q195LD materials in this example, it is raw material, after pickling, roll-force that 2.75*770, which cuts hot-rolled coil,
7500KN in 1050 milling train units, becomes the steel band of 0.165mm by eight passes.During eight passes, roll
Speed processed gradually increases from 198 ~ 480m/min, and total reduction reaches 94.5%.The specific operation of rolling is as shown in table 2.
2 comparative example of table, 1 eight passes procedure parameter
Embodiment 2, with SPHC materials in this example, the size hot-rolled roll bendings of 3.0*910 are raw material, after pickling, in roll-force
9000KN in 1150 milling train units, becomes the steel band of 0.185mm thickness by six passes.The six passes process
In, mill speed gradually increases from 417 ~ 692m/min, total reduction 93.8%, and roll-force, main unit load are reasonable.Specific rolling
Technological parameter is shown in Table 3.
3 embodiment of table, 2 six passes technological parameter
With SPHC materials in 2 this example of comparative example, the size hot-rolled roll bendings of 3.0*930 are raw material, after pickling, in roll-force
9000KN in 1150 milling train units, becomes the steel band of 0.18mm thickness by seven passes.The seven passes process
In, mill speed gradually increases from 239 ~ 627m/min, total reduction 94%, and roll-force is big, main unit load is higher.Specific rolling
Technological parameter is shown in Table 4.
4 comparative example of table, 2 seven passes technological parameter
By being compared with comparative example, six passages are compressed to from eight passages and seven passages respectively, have increased the pressure of passage
Rate is arranged.Roll-force is more reasonable, and the big problem of no roll-force occurs, and reduces main unit load, saves power consumption.Compress passage
Also improve mill speed simultaneously, substantially reduce the rolling time of every coiled strip, 0.165mm specifications rolling time respectively from
117min is reduced to 53min, 0.18mm specifications rolling time to be reduced to 50min, production efficiency to improve 30 ~ 50% from 76min,
Month production capacity is improved to greatest extent.
For single chassis reversable mill compared with tandem mill, equipment investment is few, and production chains are high, but low production efficiency is it
One big disadvantage.According to the method for the present invention, in the Rolling Production of Ultrathin steel strip, the production efficiency of reversable mill has reached and tandem rolling
Comparable level.Five frame connection rolling machine is calculated according to its muzzle velocity 1200m/min, and 2.75*760 is rolled into the present embodiment 1
0.165*760 need to take 11.6min, and five rack total time-consumings are 58min.3.0*910 rolling processes 0.185*910 needs to consume in embodiment 2
When 11.3min, five rack total time-consumings be 57min.Two time is suitable with the time used in the method for the present invention.
Therefore, according to the method for the present invention, with pervious single chassis reversable mill milling method still with tandem mill phase
Than while realizing super ultra-thin gauge rolling, still there is higher production efficiency and production capacity advantage, be suitble to promote and apply.
Claims (7)
1. a kind of single chassis reversable mill Ultrathin steel strip rolling mill practice method, characterized in that with thickness 2.75 ~ 3.0mm hot-rolled steels
Band is raw material, on 1150 milling trains that roll-force is 9000KN, becomes the ultra-thin steel of 0.13 ~ 0.2mm of thickness through six passes
Band.
2. the cold rolling process of Ultrathin steel strip according to claim 1, it is characterised in that：After six passes, stagnation pressure
Lower rate is 93 ~ 95%, wherein the reduction ratio of the first passage is 35 ~ 38%, the reduction ratio of the second passage is 35% ~ 39%, third passage
Reduction ratio is 34% ~ 39%, and four-pass reduction ratio is 35% ~ 39%, and the 5th and the 6th percentage pass reduction is 39% ~ 43%.
3. the cold rolling process of Ultrathin steel strip according to claim 1 or 2, it is characterised in that：The six passes process
In, previous three passes are low or first gear, and rear four-pass is top gear, wherein the first pass speed is 200 ~ 300m/min, the second passage
Speed be 440 ~ 480m/min, third pass speed be 550 ~ 620m/min, four-pass speed be 680 ~ 720m/min, the 5th
With the 6th pass speed within the scope of 680 ~ 720m/min.
4. the cold rolling process of Ultrathin steel strip according to claim 1 or 2, it is characterised in that：The six passes process
In, first five passage unit tension is that toe-out is more than post-tensioning, wherein the first passage toe-out is 6.8 ~ 9.8kg/mm2, post-tensioning 1.7
~2.7kg/mm2, the second passage toe-out is 8.6 ~ 12.0kg/mm2, post-tensioning is 6.0 ~ 8.5 kg/mm2, third passage toe-out is
10.5~13.5kg/mm2, post-tensioning is 9.5 ~ 12.5kg/mm2, four-pass toe-out is 11.2 ~ 13.2kg/mm2, post-tensioning be 9.5 ~
12.8kg/mm2, the 5th passage toe-out is 11.3 ~ 14.3kg/mm2, post-tensioning is 11.5 ~ 14.5kg/mm2, last a time unit
Tension post-tensioning is more than toe-out, and toe-out is 8.5 ~ 12.5kg/mm2, post-tensioning is 15.0 ~ 18.0kg/mm2, make to roll using larger post-tensioning
Power processed reduces, and strip is not easy to break.
5. the cold rolling process of Ultrathin steel strip according to claim 1, it is characterised in that：During six passes,
Improve concentration of emulsion used, a concentration of 3.5 ~ 4.5%, saponification number is 170 ~ 190mgKOH/g, and conductivity is less than 200us/cm, breast
It is 50 ~ 55% to change liquid E.S.I.
6. according to the cold rolling process of the Ultrathin steel strip described in claim 1 ~ 5, it is characterised in that：According to the rolling regulation and breast
Change liquid status, final roll-force is located within the scope of 450 ~ 700t.
7. according to the cold rolling process of the Ultrathin steel strip described in claim 1 ~ 5, it is characterised in that：Rolling Production efficiency was compared to before
Milling method improve 30 ~ 50%, and it is suitable with the production efficiency of tandem mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810114475.1A CN108284133B (en) | 2018-02-05 | 2018-02-05 | Ultra-thin steel strip rolling process method for single-stand reversible rolling mill |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810114475.1A CN108284133B (en) | 2018-02-05 | 2018-02-05 | Ultra-thin steel strip rolling process method for single-stand reversible rolling mill |
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| CN108284133A true CN108284133A (en) | 2018-07-17 |
| CN108284133B CN108284133B (en) | 2020-08-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794506A (en) * | 2019-04-04 | 2019-05-24 | 哈尔滨工业大学（威海） | A kind of hot forming steel plate rolling formation device and method |
| CN110788138A (en) * | 2019-11-11 | 2020-02-14 | 山东能源重装集团乾元不锈钢制造有限公司 | Cold rolling production method of ultrathin stainless steel strip |
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2018
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| CN104646417A (en) * | 2015-03-06 | 2015-05-27 | 郑州市华驰薄板科技有限公司 | Cold rolling method of ultra thin steel strip |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109794506A (en) * | 2019-04-04 | 2019-05-24 | 哈尔滨工业大学（威海） | A kind of hot forming steel plate rolling formation device and method |
| CN109794506B (en) * | 2019-04-04 | 2023-10-24 | 哈尔滨工业大学（威海） | Roll forming device and method for hot formed steel plate |
| CN110788138A (en) * | 2019-11-11 | 2020-02-14 | 山东能源重装集团乾元不锈钢制造有限公司 | Cold rolling production method of ultrathin stainless steel strip |
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| CN108284133B (en) | 2020-08-11 |
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| CP01 | Change in the name or title of a patent holder |
Address after: 056700 No.30, Juliang Avenue, Cheng'an County, Handan City, Hebei Province Patentee after: Handan Jintai packaging material Co.,Ltd. Address before: 056700 No.30, Juliang Avenue, Cheng'an County, Handan City, Hebei Province Patentee before: HANDAN JINTAI PACKING MATERIAL STOCK Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A single stand reversible rolling mill ultra-thin steel strip rolling process method Granted publication date: 20200811 Pledgee: China Postal Savings Bank Co.,Ltd. Cheng'an County Branch Pledgor: Handan Jintai packaging material Co.,Ltd. Registration number: Y2024980013939 |
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Application publication date: 20180717 Assignee: Rizhao Yulan New Materials Co.,Ltd. Assignor: Handan Jintai packaging material Co.,Ltd. Contract record no.: X2024980008740 Denomination of invention: A single stand reversible rolling mill ultra-thin steel strip rolling process method Granted publication date: 20200811 License type: Common License Record date: 20240702 |
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