CN104438320B - A kind of milling method of gloomy base Mil milling train ultrathin strip - Google Patents
A kind of milling method of gloomy base Mil milling train ultrathin strip Download PDFInfo
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- CN104438320B CN104438320B CN201410729232.0A CN201410729232A CN104438320B CN 104438320 B CN104438320 B CN 104438320B CN 201410729232 A CN201410729232 A CN 201410729232A CN 104438320 B CN104438320 B CN 104438320B
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- width
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- 238000003801 milling Methods 0.000 title claims abstract description 42
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 16
- 239000010959 steel Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000005097 cold rolling Methods 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 6
- 238000009826 distribution Methods 0.000 description 4
- 241000736199 Paeonia Species 0.000 description 2
- 235000006484 Paeonia officinalis Nutrition 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000003079 width control Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- 230000037303 wrinkles Effects 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
Abstract
The invention belongs to steel plate rolling technical field, a kind of gloomy base Mil milling train ultrathin strip milling method is disclosed, is comprised the following steps：Raw material specification is designed, and specifies raw thickness, width and width surplus；Cold rolling schedule, determines milling train passage and its sharing of load；Roll contour design, sets the roller curve of an intermediate calender rolls and two intermediate calender rolls respectively；Tension force is distributed, and determines the unit tension value of each passage；Plate form control, designs the target template controlling curve of each passage.The milling method that the present invention is provided reaches that production surmounts existing thickness limit 0.17mm, realizes the production purpose of more Thin Strip Steel by optimizing rolling flow, parameter setting.
Description
Technical field
The present invention relates to steel plate rolling technical field, more particularly to a kind of milling method of gloomy base Mil milling train ultrathin strip
Background technology
The most Thin Strip Steel thickness that gloomy base Mil rolling mill design can be produced is 0.17mm, thicker than market demand 0.14mm
0.03mm。
Ultra-thin specification 0.14mm or even the steel plate of lower specification are produced, production procedure and relevant art parameter are set
Surely must strictly it control.Common process easily causes steel plate corrugation, barring；Simultaneously in view of due to adding in thickness of slab very little, the operation of rolling
Work hardening increase, finished size control difficulty is increasing, the problem of easily causing broken belt.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of milling method of gloomy base Mil milling train ultrathin strip
, while avoiding the problem of corrugation, barring and broken belt in the operation of rolling.
In order to solve the above technical problems, the invention provides a kind of milling method of gloomy base Mil milling train ultrathin strip, bag
Include following steps：
Raw material specification is designed, and specifies raw thickness, width and width surplus；
Cold rolling schedule, determines milling train passage and its sharing of load；
Roll contour design, sets the roller curve of an intermediate calender rolls and two intermediate calender rolls respectively；
Tension force is distributed, and determines the unit tension value of each passage；
Plate form control, designs the target template controlling curve of each passage.
Further, raw thickness scope is 1.8mm~2.0mm；Width adds width surplus according to the requirement of target template.
Further, the rolling pass of milling train is 6 or 7 passages；Passage load is 25%-36%.
Further, the roll shape curve that two intermediate calender rolls are used for parabolical 5% or 10% or 13% convexity, one
Intermediate calender rolls are roller shape of the one end with taper, bore a length of 285mm or 350mm.
Further, passage unit tension value is 1.0~25kg/mm2.
Further, each passage target template controlling curve is y=ax+bx2+cx4+dx6；Wherein, coefficient a, b, c and d
Chosen according to target template.
The milling method for the gloomy base Mil milling train ultrathin strip that the present invention is provided, is designed, gloomy base Mil by raw material specification
Plate form control, thickness control, width control system and surface matter are realized in milling train roll contour design, passage sharing of load and tension force distribution
Amount control, optimization steel plate rolling flow and technique, so that in production 0.14mm even 0.05mm steel plate, while avoiding producing
The problem of corrugation, barring and broken belt.
Brief description of the drawings
Fig. 1 is the milling method flow chart of gloomy base Mil milling train ultrathin strip provided in an embodiment of the present invention.
Embodiment
Referring to Fig. 1, a kind of milling method of gloomy base Mil milling train ultrathin strip provided in an embodiment of the present invention, including it is following
Step：
Raw material specification is designed, and specifies raw thickness, width and width surplus；
Cold rolling schedule, determines milling train passage and its sharing of load；
Roll contour design, sets the roller curve of an intermediate calender rolls and two intermediate calender rolls respectively；
Tension force is distributed, and determines the unit tension value of each passage；
Plate form control, designs the target template controlling curve of each passage.
The present embodiment can optimize in terms of from raw material design, rolling mill technology technology, roller shape technology, equipment, form
A whole set of supporting technology.
Steel plate raw material is rolling basis, and its thickness is particularly significant to rolling efficiency and quality.The thinner hot rolling production of thickness is more
Unstable, broken belt rate is high, and template is difficult to control to.Thickness is thicker, cold reduced work hardened big, and cold rolling process road often, influences
Production capacity is lifted.It is preferred that, rolling efficiency and quality are taken into account, raw thickness scope is 1.8mm~2.0mm；Width is according to Target Board
Type requirement adds width surplus；Raw material width is that target width adds 20mm, wherein milling train drawing down 5mm, finishing trimming 15mm.
Gloomy base Mil milling train road number of times is 6-7 passages, according to the deformation resistance curve of material, calculates the rolling of each passage
Power, in order to ensure rolling is stable and plate form control, the roll-force of each passage is gradually reduced.It can effectively ensure that rolling is stable
Property, substantially reduce the possibility of broken belt.
Each passage sharing of load is as shown in following table institute 1.The rolling pass of milling train is 6 or 7 passages；Passage load is
25%-36%.
The load of table 1, tension force allocation table
The roll shape curve that two intermediate calender rolls are used is parabolical 5% or 10% or 13% convexity, and an intermediate calender rolls are
Roller shape of the one end with taper, is bored with two kinds of 285mm and 350mm.Passage unit tension value is 1.0~25kg/mm2.
By roll shape control, effectively steel plate can be avoided to wrinkle using taper roll form, the uniform intermediate calender rolls of barring by
Power, it is to avoid prior art central roll two ends stress is excessive to cause local roll surface deformation, causes the excessive steel caused of steel plate local pressure
Plate shape becomes even broken belt, lifts strip quality.
The purpose of roller system convexity and taper design is to ensure that the cold rolling template that rolling is stable and acquisition is good.When actual use
Selected according to strip width, as shown in table 2.
The roller system convexity of table 2, taper
Gloomy base Mil milling train one-level, side program setting limit lower specification limit are adjusted to 0.12mm.
The first passage of gloomy base Mil milling train plays car parameter and initially sets roll shifting value, ASU values.According to strip width and load,
Tension force distribution considers initial set value.Roll shifting value mainly influences strip to play car edge pressure size, direct relation Edge
Type.Roll gap shape when the main influence strip of ASU values plays car, when convex-shaped is presented in roll gap, is rolled more stable.Initial value is set
As shown in table 3.
Initial parameter sets specification when the passage of table 3 plays car
Each passage target template controlling curve is y=ax+bx2+cx4+dx6；Wherein, coefficient a, b, c and d is according to target
Template is chosen.
In order to ensure the annealing production of rear process is stable and obtains good template, it is cold rolling after strip micro- middle wave plate type is presented,
Therefore the template of each passage is controlled according to micro- middle unrestrained pattern.Each passage unevenness IU is respectively 15,12,12,10,10,10,5.
Gloomy each passage thickness control mode of base Mil milling train has 7 kinds, different passages due to operating mode and the difference of rolling condition,
Using different control modes.As shown in table 4.
Each passage thickness control mode specification of the gloomy base Mil milling train of table 4
The gloomy base Mil milling train 0.14mm Limit specifications carbon steel rolling techniques that the present embodiment is provided.Specific implementation method is such as
Under.
Thickness is that the hot rolling that 1.8-2.0mm, width are 900-1300mm removes scale on surface through overpickling, and this is gloomy
The stock roll of base Mil's milling train.The strip mechanical property parameters gone out according to leading testing inspection, formulate sharing of load, tension force distribution
Table, and by parameter typing level two.Roller system's convexity and an intermediate calender rolls taper roller shape are selected according to strip width, and will be ready to
Roll load milling train in.Adjustment emulsion parameters reach code requirement within two days in advance.The target template of each passage is bent
Line equation typing level two.First passage is played into car parameter initial set value typing level two.By each passage thickness control
Method optimizing processed is into one-level program.After the completion of all preparatory conditions, tissue raw material coil of strip is reached the standard grade, and prepares gloomy base Mil milling train life
Production.
First passes.First passage plays Chinese herbaceous peony, and main behaviour confirms that parameter is errorless.Playing main behaviour after car needs according to exit plate
Template that type instrument is shown, gateway strip both sides tension variation (play a Chinese herbaceous peony and cannot be greater than 5 tons, 2.5 are cannot be greater than in the operation of rolling
Ton) it is adjusted template.The means of adjustment have roll shifting, ASU and roll gap leveling.
Second passage needs the template shown according to gateway template instrument to be controlled to final pass, main behaviour, closes simultaneously
Note the situation of change of forward and backward sliding value and belt steel thickness change in the operation of rolling, it is ensured that rolling is stable.
The rolling technique provided according to the present invention produces stable, and product template is excellent, thickness and precision is high, surface quality is good.
Table 6 is using the coil of strip achievement data produced after the present invention.
Table 6 requires to contrast using the coil of strip achievement data produced after the technology of the present invention with user
The milling method for the gloomy base Mil ultrathin strip that the present invention is provided, is designed, gloomy base Mil milling train by raw material specification
Plate form control, thickness control, width control system and surface quality control are realized in roll contour design, passage sharing of load and tension force distribution
System, optimization steel plate rolling flow and technique, so that in production 0.14mm, 0.12mm even 0.05mm steel plate, and compare and produce
The problem of corrugation, barring and broken belt.
It should be noted last that, above embodiment is merely illustrative of the technical solution of the present invention and unrestricted,
Although the present invention is described in detail with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent substitution, without departing from the spirit and scope of technical solution of the present invention, it all should cover
Among scope of the presently claimed invention.
Claims (3)
1. a kind of milling method of gloomy base Mil ultrathin strip, it is characterised in that comprise the following steps：
Raw material specification is designed, and specifies raw thickness, width and width surplus；
Cold rolling schedule, determines milling train passage and its sharing of load；
Roll contour design, sets the roller curve of an intermediate calender rolls and two intermediate calender rolls respectively；
Tension force is distributed, and determines the unit tension value of each passage；
Plate form control, designs the target template controlling curve of each passage；
Wherein, the rolling pass thickness control mode of milling train：Low-speed situations, use permanent roll-force, front and rear feedback control mode, high speed
In the case of use second flow, Thin Strip Steel use tension AGC control mode；
When rolling pass is 7 passage：
Raw thickness scope is 1.8mm~2.0mm；Width adds width surplus according to the requirement of target template；
Passage load is 25%-36%；
The roll shape curve that two intermediate calender rolls are used is parabolical 5% or 10% or 13% convexity, and an intermediate calender rolls are one end
Roller shape with taper, bores a length of 285mm or 350mm.
2. the milling method of gloomy base Mil ultrathin strip as claimed in claim 1, it is characterised in that：Passage unit tension value is
1.0~25kg/mm2.
3. the milling method of gloomy base Mil ultrathin strip as claimed in claim 1, it is characterised in that：Each passage target template control
Koji-making line is y=ax+bx2+cx4+dx6；Wherein, coefficient a, b, c and d chooses according to target template.
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| CN201410729232.0A CN104438320B (en) | 2014-12-03 | 2014-12-03 | A kind of milling method of gloomy base Mil milling train ultrathin strip |
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| CN104438320B true CN104438320B (en) | 2017-08-22 |
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| CN106583448B (en) * | 2016-12-08 | 2018-10-16 | 武汉钢铁有限公司 | The cold rolling process of Ultra-thin high magnetic induction grain-oriented silicon steel |
| CN109158429B (en) * | 2018-08-01 | 2020-03-20 | 首钢智新迁安电磁材料有限公司 | Edge drop control method for producing silicon steel by Sendzimir rolling mill |
| CN110238193B (en) * | 2019-06-21 | 2020-12-08 | 山西太钢不锈钢精密带钢有限公司 | Ultra-thin ultra-wide stainless steel band rolling process |
| CN110421010B (en) * | 2019-07-11 | 2020-11-03 | 山西太钢不锈钢股份有限公司 | Method for controlling rolling-up of stainless steel cold-rolled strip steel |
| CN110404968A (en) * | 2019-08-01 | 2019-11-05 | 山西太钢不锈钢精密带钢有限公司 | The manufacturing method of the super flat material of ultra-thin stainless steel |
| CN114260316B (en) * | 2020-09-16 | 2024-04-05 | 宝山钢铁股份有限公司 | Driven roller of second intermediate roller of Sendzimir mill |
| CN113926853A (en) * | 2021-09-15 | 2022-01-14 | 首钢智新迁安电磁材料有限公司 | Rolling method and device for high-grade non-oriented silicon steel |
| CN114160577B (en) * | 2021-11-18 | 2023-06-23 | 山西太钢不锈钢股份有限公司 | Cold rolling method for improving thickness precision of ultrathin high-grade non-oriented silicon steel |
| CN114643279A (en) * | 2022-01-29 | 2022-06-21 | 安阳钢铁股份有限公司 | Method for controlling shape of ultrathin ultra-wide steel strip for continuous galvanizing |
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| CN101587347B (en) * | 2008-05-22 | 2012-04-04 | 鞍钢股份有限公司 | Design method of cold rolling mill plate shape control target model |
| CN101690940B (en) * | 2008-12-25 | 2011-07-20 | 山西太钢不锈钢股份有限公司 | Method for rolling precision stainless steel strips with Sendzimir rolling mill |
| CN101716594B (en) * | 2009-12-11 | 2011-04-27 | 永鑫精密材料（无锡）有限公司 | Production process of precise stainless steel band for vehicle sealing pad |
| JP5768468B2 (en) * | 2011-01-14 | 2015-08-26 | Ｊｆｅスチール株式会社 | Cold rolling mill and cold rolling method for metal strip |
| CN103302095A (en) * | 2013-06-19 | 2013-09-18 | 合肥华信电动科技发展有限公司 | Production process of alloy material for electric automobile |
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Address after: 064400 No. 025 Zhao'an Street, Qian'an Economic Development Zone, Tangshan City, Hebei Province Patentee after: Shougang Zhixin Electromagnetic Materials (Qian'an) Co.,Ltd. Country or region after: China Address before: 064400 No. 025, Zhao an street, western industrial area, Qian'an, Tangshan City, Hebei Patentee before: SHOUGANG ZHIXIN QIAN'AN ELECTROMAGNETIC MATERIALS Co.,Ltd. Country or region before: China |