CN107377629A - A kind of distribution method of heavy and medium plate mill finish rolling stage code - Google Patents
A kind of distribution method of heavy and medium plate mill finish rolling stage code Download PDFInfo
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- CN107377629A CN107377629A CN201710509149.6A CN201710509149A CN107377629A CN 107377629 A CN107377629 A CN 107377629A CN 201710509149 A CN201710509149 A CN 201710509149A CN 107377629 A CN107377629 A CN 107377629A
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- finish rolling
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- 238000005096 rolling process Methods 0.000 title claims abstract description 49
- 238000009826 distribution Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 10
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000003801 milling Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 3
- 101100281510 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) met-6 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013000 roll bending Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/04—Thickness, gauge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/02—Transverse dimensions
- B21B2261/06—Width
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2261/00—Product parameters
- B21B2261/20—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/10—Compression, e.g. longitudinal compression
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B2265/00—Forming parameters
- B21B2265/12—Rolling load or rolling pressure; roll force
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
A kind of distribution method of heavy and medium plate mill finish rolling stage code, belongs to Heavy Plate Production technical field.110~180mm of billet specification, steel plate 6~8mm of specification, heating steel billet come out of the stove target temperature as 1250~1300 DEG C；The finish rolling stage presses 5~7 road secondary controls, the n-th passage roll gap setting Gapn, meet condition Gapn+1＜ Gapn；N-th reduction in pass is Draftn, final pass drafts meets 0.7mm≤Draft≤1.5mm；N-th passes power is Fn, 2000 tons≤F of last three passes power satisfactionn≤ 5500 tons.Advantage is that Controlling principle is clear, makes 6~8mm thin specification steel plate finish rolling stage templates good, is not likely to produce rolling camber.
Description
Technical field
The invention belongs to Heavy Plate Production technical field, more particularly to a kind of distribution of heavy and medium plate mill finish rolling stage code
Method.More particularly to the distribution method of rolling 6~8mm limit thin specification steel plate finish rolling stage rolling codes.
Background technology
More than 3m wide and heavy plate mills mainly produce thickness 12mm above specification steel plates, and 6~8mm thin specification steel plates are generally in warm
Produce on Continuous mill train and used after kaiping processing, but roll bending open it is flat after plate shape be difficult to be guaranteed；Hot tandem
Body of roll width generally in the industry such as below 2300mm, the deck of boat, bridge plate and specific use boiler vessel plate to thin wide gauge steel
The demand of plate is continuously increased, and for width specifications in 2500~3500mm, this width specifications is that hot-rolled coil can not produce, if
Welding job amount will be increased by opening flat use using hot-rolled coil, and it is remote not only to add process-cycle, the unevenness of butt welding steel plate
Not as good as the steel plate once rolled into, while butt welding steel plate need to detect a flaw to weld seam, and cost increase, part engineering thinks weld seam increase
Application risk can be caused to increase.
Therefore using heavy and medium plate mill production 6~8mm of thickness, 2500~3500mm of width have preferable market prospects and
Development volue, and Wide and Thick Slab rolls the tensioner of no hot-rolled coil, and heavy and medium plate mill is maximized due to milling train, and roll is swollen
Swollen, body of roll water cooling, rolling mill precision are all unfavorable for thin plate rolling, the thin wide specification productions of 6~8mm of Medium and Heavy Plate Rolling with respect to hot-rolled coil
Difficulty is larger during product, is mainly reflected in following aspects：
1st, the finish rolling stage easily occurs that side is unrestrained or middle wave plate type；
2nd, easily there is rolling camber in the finish rolling stage, scrapes and pulls rolling-mill housing or roll useless；
3rd, the finish rolling stage easily causes rolling procedure change and then influence of rolled stability because temperature drop is too fast.
Control of the distribution of finish rolling stage rolling code on template, rolling stability, camber has conclusive influence,
The finishing mill stage is particularly last three passages because rolled piece thickness is than relatively thin, it is necessary to control moderate roll-force and roll gap
Setting, first roll-force are unsuitable too small, and the too small roll gap of roll-force does not have effective suppression to rolled piece, and milling train is easily got rid of
It is curved；Secondly roll-force is unsuitable excessive, by mill stiffness influence of rolled power it is excessive easily cause mill spring excessive, cause roll gap
Too small, rolling also easily causes camber in unstable state, while serious side wave easily occurs in template；Rolling temperature is not
It is preferably too low, the increase of deformation of rolled wire tension is easily caused if rolled piece temperature is low, and then cause roll-force to increase, cause roll gap unstable
It is fixed, induce template and camber problem occurs；Planishing roll seam is set at continuous lower compression roller and seamed to be set to good, and n+1 passages
Roll gap be preferably less than the roll gap of n passages, also easily cause template ideal as the roll gap of n+1 passages is more than the setting of n passages roll gap；Essence
Mill train time is unsuitable excessive, and the increase of finishing pass quantity easily causes the reduction of rolled piece temperature, rolling unstability increase.
The content of the invention
It is an object of the invention to provide a kind of distribution method of heavy and medium plate mill finish rolling stage code, solves cut deal
Mill milling 6~8mm of thickness specification, width 2000~3500mm steel plates, operation of rolling control is unstable, and template is bad, easily production
The problem of raw camber.For 110~180mm of billet specification, heating steel billet is come out of the stove 1250~1300 DEG C of target temperature, and steel plate is thick
The rolling situation that steel treats 50~70mm of temperature thickness is put in metric 6~8mm of lattice, steel plate width 2000~3500mm of specification, roughing, design
5~7 passages of finishing pass quantity, drafts to finish rolling stage especially last three passages, roll gap setting and roll-force
Design has been set for, has met 6~8mm of thickness specification, width specifications 2000~3500mm limit thin specification steel plate cut deals
The demand of milling train steady production.
A kind of distribution method of heavy and medium plate mill finish rolling stage code, specific steps and parameter are as follows：
1st, steel billet, steel plate specification are：110~180mm of billet specification, steel plate 6~8mm of specification, width specifications 2000
~3500mm, it is 50~70mm to treat temperature thickness, and heating steel billet comes out of the stove target temperature as 1250~1300 DEG C；
2nd, finish rolling stage rolling code is set：
1) passage selects：The finish rolling stage presses 5~7 road secondary controls, finishing pass quantity：N (n=1,2,3,4,5,6,7)；
2) roll gap and final pass reduction settings：N-th passage roll gap sets Gapn, meet condition Gapn+1＜ Gapn, and
Meet roll gap Gap >=4mm of final pass.The purpose of final pass roll gap Gap >=4mm is to avoid final pass roll gap too small, is made
Into roll-force, bigger than normal while mill spring is excessive, and then influence of rolled template.
3) the n-th reduction in pass is Draftn, final pass drafts meets 0.7mm≤Draft≤1.5mm.Drafts
It is excessive or too small roll-force can be caused excessive or too small.
4) rolling force setup：N-th passes power is Fn, 2000 tons≤F of last three passes power satisfactionn≤5500
Ton, and roll-force is successively decreased the distribution that tapers off, if last three passes power is respectively F4、F5、F6, meet 2000 tons≤F6＜
F5＜ F4≤ 5500 tons.The finish rolling stage, especially last three passes power was moderate, prevent it is excessive or too small, roll-force it is excessive easily
Cause mill spring is excessive to cause rolling template bad；The too small roller gap that easily causes of roll-force cannot keeps under control steel plate, and rolling is easy
Produce camber.
It is an advantage of the current invention that Controlling principle is clear, performed beneficial to steel rolling field control and operation, while in this principle
Down by controlling mill roll-gap and roll-force, make 6~8mm thin specification steel plate finish rolling stage templates good, be not likely to produce rolling sickle
Knife is curved.
Embodiment
Embodiment 1
Steel grade：6mmQ420qE
Specific steps and parameter are as follows：
1st, steel billet, steel plate specification are：Billet specification 115mm, steel plate specification 6mm, width specifications 2258mm, is treated gentle and kind
Spend and come out of the stove target temperature for 62mm, heating steel billet as 1260 DEG C；
2nd, finish rolling stage rolling code is set：
1) finishing pass quantity n=6；
2) condition Gap is metn+1＜ Gapn, meet roll gap Gap >=4m of final pass.Final pass Gap=4.79mm.
3) final pass drafts meets 0.7mm≤Draft≤1.5mm.Final pass drafts Draft is 1.1mm.
4) the n-th passes power is Fn, 2000 tons≤F of last three passes power satisfactionn≤ 5500 tons, and roll-force
Successively decrease the distribution that tapers off, last three passes power is respectively F4、F5、F6, meet 2000 tons≤F6＜ F5＜ F4≤5500
Ton.Last three passes power is respectively 4792 tons, 4115 tons, 3002 tons.
The last three passes codes setting of finish rolling is as follows：
| Passage | Thickness (mm) | Drafts (mm) | Roll gap (mm) | Roll-force (ton) |
| 4 | 9.9 | 5.3 | 5.48 | 4792 |
| 5 | 7.6 | 2.4 | 5.36 | 4115 |
| 6 | 6 | 1.1 | 4.79 | 3002 |
Embodiment 2
Steel grade：7mm CCS/A
Specific steps and parameter are as follows：
1st, steel billet, steel plate specification are：Billet specification 115mm, steel plate specification 7.5mm, width specifications 3385mm, treats temperature
Thickness is 50mm, and heating steel billet comes out of the stove target temperature as 1280 DEG C.
2nd, finish rolling stage rolling code is set：
1) finishing pass quantity n=6；
2) condition Gap is metn+1＜ Gapn, meet roll gap Gap >=4m of final pass.Final pass Gap=6.25mm.
3) final pass drafts meets 0.7mm≤Draft≤1.5mm.Final pass drafts is 1.09mm.
4) the n-th passes power is Fn, 2000 tons≤F of last three passes power satisfactionn≤ 5500 tons, and roll-force
Successively decrease the distribution that tapers off, last three passes power is respectively F4、F5、F6, meet 2000 tons≤F6＜ F5＜ F4≤5500
Ton.Last three passes power is respectively 3972 tons, 3538 tons, 3298 tons.
The last three passes codes setting of finish rolling is as follows：
| Passage | Thickness (mm) | Drafts (mm) | Roll gap (mm) | Roll-force (ton) |
| 4 | 9.91 | 2.86 | 8.26 | 3972 |
| 5 | 8.45 | 1.66 | 7.34 | 3538 |
| 6 | 7 | 1.09 | 6.25 | 3298 |
Claims (2)
1. a kind of distribution method of heavy and medium plate mill finish rolling stage code, it is characterised in that specific steps and parameter are as follows：
1) steel billet, steel plate specification are：110~180mm of billet specification, steel plate 6~8mm of specification, width specifications 2000~
3500mm, it is 50~70mm to treat temperature thickness, and heating steel billet comes out of the stove target temperature as 1250~1300 DEG C；
2) finish rolling stage rolling code is set：
1. passage selects：The finish rolling stage presses 5~7 road secondary controls, finishing pass quantity：N (n=1,2,3,4,5,6,7)；
2. roll gap and final pass reduction settings：N-th passage roll gap sets Gapn, meet condition Gapn+1＜ Gapn, and meet
Roll gap Gap >=4mm of final pass；
3. the n-th reduction in pass is Draftn, final pass drafts meets 0.7mm≤Draft≤1.5mm；
4. rolling force setup：N-th passes power is Fn, 2000 tons≤F of last three passes power satisfactionn≤ 5500 tons, and
Roll-force is successively decreased the distribution that tapers off.
2. according to the method for claim 1, it is characterised in that in described step 2), such as last three passes power
Respectively F4、F5、F6, meet 2000 tons≤F6＜ F5＜ F4≤ 5500 tons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509149.6A CN107377629A (en) | 2017-06-28 | 2017-06-28 | A kind of distribution method of heavy and medium plate mill finish rolling stage code |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710509149.6A CN107377629A (en) | 2017-06-28 | 2017-06-28 | A kind of distribution method of heavy and medium plate mill finish rolling stage code |
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| Publication Number | Publication Date |
|---|---|
| CN107377629A true CN107377629A (en) | 2017-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710509149.6A Pending CN107377629A (en) | 2017-06-28 | 2017-06-28 | A kind of distribution method of heavy and medium plate mill finish rolling stage code |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110516312A (en) * | 2019-07-31 | 2019-11-29 | 北京首钢自动化信息技术有限公司 | A kind of no roller cut deal end stage plate shape lock regulation distribution method |
| CN112077142A (en) * | 2020-08-05 | 2020-12-15 | 首钢京唐钢铁联合有限责任公司 | Rolling method and device of 8CrV saw blade steel |
| CN114192584A (en) * | 2021-11-30 | 2022-03-18 | 北京首钢自动化信息技术有限公司 | Medium plate pressing regulation distribution method and system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2193348B (en) * | 1986-07-01 | 1990-07-11 | Sendzimir Inc T | Rolling mill management system |
| EP0839587A1 (en) * | 1996-11-05 | 1998-05-06 | Sms Schloemann-Siemag Aktiengesellschaft | Method for rolling thick plates |
| CN101259482A (en) * | 2007-03-08 | 2008-09-10 | 新余钢铁有限责任公司 | 6mm steel plate rolling technique |
| CN102825065A (en) * | 2012-09-13 | 2012-12-19 | 莱芜钢铁集团有限公司 | Rolling method for steel plates of wide and thin specifications |
| CN102962253A (en) * | 2012-12-09 | 2013-03-13 | 新余钢铁集团有限公司 | 5-millimeter steel plate rolling process |
| CN103331304A (en) * | 2013-07-12 | 2013-10-02 | 鞍钢股份有限公司 | Method for rolling steel plate by medium plate mill |
-
2017
- 2017-06-28 CN CN201710509149.6A patent/CN107377629A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2193348B (en) * | 1986-07-01 | 1990-07-11 | Sendzimir Inc T | Rolling mill management system |
| EP0839587A1 (en) * | 1996-11-05 | 1998-05-06 | Sms Schloemann-Siemag Aktiengesellschaft | Method for rolling thick plates |
| CN101259482A (en) * | 2007-03-08 | 2008-09-10 | 新余钢铁有限责任公司 | 6mm steel plate rolling technique |
| CN102825065A (en) * | 2012-09-13 | 2012-12-19 | 莱芜钢铁集团有限公司 | Rolling method for steel plates of wide and thin specifications |
| CN102962253A (en) * | 2012-12-09 | 2013-03-13 | 新余钢铁集团有限公司 | 5-millimeter steel plate rolling process |
| CN103331304A (en) * | 2013-07-12 | 2013-10-02 | 鞍钢股份有限公司 | Method for rolling steel plate by medium plate mill |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110516312A (en) * | 2019-07-31 | 2019-11-29 | 北京首钢自动化信息技术有限公司 | A kind of no roller cut deal end stage plate shape lock regulation distribution method |
| CN110516312B (en) * | 2019-07-31 | 2022-10-21 | 北京首钢自动化信息技术有限公司 | Method for distributing plate shape locking rules of end stage of bending-roller-free medium plate |
| CN112077142A (en) * | 2020-08-05 | 2020-12-15 | 首钢京唐钢铁联合有限责任公司 | Rolling method and device of 8CrV saw blade steel |
| CN114192584A (en) * | 2021-11-30 | 2022-03-18 | 北京首钢自动化信息技术有限公司 | Medium plate pressing regulation distribution method and system |
| CN114192584B (en) * | 2021-11-30 | 2024-03-15 | 北京首钢自动化信息技术有限公司 | Medium plate pressing regulation distribution method and system |
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| TA01 | Transfer of patent application right | ||
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Effective date of registration: 20190326 Address after: 063200 Iron and Steel Power Park, Caofeidian Industrial Zone, Tangshan City, Hebei Province Applicant after: Shougang Jingtang United Iron & Steel Co., Ltd. Address before: 066326 Duzhuang, Haigang District, Qinhuangdao City, Hebei Province Applicant before: QINHUANGDAO SHOUQIN METAL MATERIAL Co.,Ltd. |
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Application publication date: 20171124 |