CN107695109A - Skin pass mill group milling method - Google Patents
Skin pass mill group milling method Download PDFInfo
- Publication number
- CN107695109A CN107695109A CN201710833931.3A CN201710833931A CN107695109A CN 107695109 A CN107695109 A CN 107695109A CN 201710833931 A CN201710833931 A CN 201710833931A CN 107695109 A CN107695109 A CN 107695109A
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- CN
- China
- Prior art keywords
- force
- roll
- stage
- unit speed
- skin pass
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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
- B21B37/56—Elongation control
-
- 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
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/58—Roll-force control; Roll-gap control
-
- 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)
- Control Of Metal Rolling (AREA)
Abstract
The present invention relates to rolling mill practice field, especially a kind of stability for improving roll-force, the automatic switchover between control model is realized, so as to which the skin pass mill group milling method of the surfacing liquid residual of product quality and reduction product be greatly improved, comprised the following steps：A, the first stage rolls initial stage：Unit speed 0~400m/min of scope, is rolled using permanent roll-force；B, second stage rolls mid-term stage：Unit speed scope is more than or equal to 400m/min, using elongation control pattern；C, the phase III rolls ending phase：Unit speed is rolled less than 400m/min using permanent roll-force.Switching problem that is of the invention then overcoming Traditional control pattern well, and the stably and controllable conversion in the whole operation of rolling between control model is finally realized, production efficiency is greatly improved.Present invention is particularly suitable for the production occasion that skin pass mill group is representative.
Description
Technical field
The present invention relates to rolling mill practice field, especially a kind of skin pass mill group milling method.
Background technology
The rolling model program of existing a whole set of skin pass mill group cover elongation control pattern, Constant dvaught pressure control pattern,
Gap preset pattern, tilt control mode, roller control model.This several control program is all in the whole operation of rolling at present
Relatively independent control model, between switching need manually to carry out, the switching mode of this control model is to function
Optimization forms larger difficulty so that carrying out the process of function optimization becomes complicated and cumbersome.
Original roll control can only select elongation control pattern, Constant dvaught pressure control pattern, roller when starting and rolling
Stitch the one of which in control model, it is impossible to the switching of pattern is controlled stage by stage in the whole operation of rolling, because switching
The fluctuation of control model meeting strong influence roll-force, causes product quality problem；So this function is necessary during realizing
The smoothly transition of roll-force will be reached by ensureing the program of design, and this requirement will cause whole programming to become risk very
Greatly, the necessary extreme care of the design of details, the roll-force in the accurate and switching that accomplish to calculate smooth out in the design process, guarantor
Card product quality in the automatic switchover of rolling mode can be stablized.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of stability for improving roll-force, realize between control model
Automatic switchover, so as to be greatly improved product quality and reduce product surfacing liquid residual skin pass mill group milling method.
The technical solution adopted for the present invention to solve the technical problems is：Skin pass mill group milling method, comprises the following steps：
A, the first stage rolls initial stage：Unit speed 0~400m/min of scope, is rolled using permanent roll-force
System, wherein, the setting value of roll-force is set according to steel grade and thickness specification；
B, second stage rolls mid-term stage：Unit speed scope is more than or equal to 400m/min, using elongation percentage control
Molding formula, wherein, the setting value of roll-force according to it is actually detected to elongation percentage set；
C, the phase III rolls ending phase：Unit speed is rolled less than 400m/min using permanent roll-force,
Wherein, the setting value of roll-force is set according to the average actual roll-force in elongation control stage.
It is further that in step a, steel grade and thickness specification are called automatically according to procedural model.
The beneficial effects of the invention are as follows：In the whole operation of rolling all it is relatively independent control between traditional control program
Molding formula, between switching need manually to carry out.Switching problem that is of the invention then overcoming Traditional control pattern well,
In actual use, the switching according to the Constant dvaught pressure control of first stage to second stage elongation control, cut so as to compensate
The roll-force fluctuating error brought when changing；Switching according to second stage elongation control to phase III Constant dvaught pressure control,
The smoothly transition of two kinds of control mode switchs is realized, reduces the risk that the product quality that roll-force wave zone comes reduces.And
The stably and controllable conversion between control model in the whole operation of rolling is finally realized, production efficiency is greatly improved.This
Invent the production occasion that skin pass mill group is representative that is particularly suitable for use in.
Embodiment
Skin pass mill group milling method, comprises the following steps：A, the first stage rolls initial stage：Unit speed scope 0
~400m/min, rolled using permanent roll-force, wherein, the setting value of roll-force is set according to steel grade and thickness specification
It is fixed；B, second stage rolls mid-term stage：Unit speed scope is more than or equal to 400m/min, using elongation control mould
Formula, wherein, the setting value of roll-force according to it is actually detected to elongation percentage set；C, the phase III, which rolls, terminates rank
Section：Unit speed is rolled less than 400m/min using permanent roll-force, wherein, the setting value of roll-force is according to elongation percentage
The average actual roll-force in control stage is set.In actual production, it is generally preferable to steel grade and thickness specification in step a
Called automatically according to procedural model.
For in traditional rolling mill practice, several control programs are all relatively independent control mould in the whole operation of rolling
Formula, between switching need manually to carry out, the optimization of the switching mode of control model to function forms larger difficulty,
Allow to carry out the technical barrier that the process of function optimization becomes complicated and cumbersome.The present invention has carried out following technology structure first
Think：First, Constant dvaught pressure control of the roll-force reference value for the first stage is made according to the objective function of optimize technique；Its
It is secondary, the automatic gating module program architecture of two groups of roll-force reference values of first stage offer is provided；Then, according to optimization work
The objective function of skill makes the startup opportunity of elongation control, i.e. second stage, that is, is opened when unit speed reaches how many
The input that begins elongation control；Finally, the rolling for the reduction of speed rolling that decline product is carried out after elongation control terminates is designed
Power reference value operation program, i.e. phase III, Constant dvaught pressure control is transferred to after elongation control is cut off automatically again.In addition,
The computing of phase III and first stage have very big difference.First stage is directly given with reference to rolling according to steel grade and thickness
Power；Phase III then carries out calculating roll-force reference value according to the average actual roll-force in elongation control stage, makes its holding
It is horizontal in a relatively accurate roll-force, improve the quality stability of afterbody product.
The present invention overcomes the switching problem of Traditional control pattern, in reality well on the basis of above-mentioned technical concept
In use, according to the Constant dvaught pressure control of first stage to the switching of second stage elongation control, band during so as to compensate switching
The roll-force fluctuating error come；Switching according to second stage elongation control to phase III Constant dvaught pressure control, is realized
The smoothly transition of two kinds of control mode switchs, reduce the risk that the product quality that roll-force wave zone comes reduces.It is and final real
The stably and controllable conversion between control model in the whole operation of rolling is showed, production efficiency is greatly improved.It is of the invention outstanding
It is applied to the production occasion that skin pass mill group is representative, has wide market promotion prospect.
Claims (2)
1. skin pass mill group milling method, it is characterised in that comprise the following steps：
A, the first stage rolls initial stage：Unit speed 0~400m/min of scope, is rolled using permanent roll-force, its
In, the setting value of roll-force is set according to steel grade and thickness specification；
B, second stage rolls mid-term stage：Unit speed scope is more than or equal to 400m/min, using elongation control mould
Formula, wherein, the setting value of roll-force according to it is actually detected to elongation percentage set；
C, the phase III rolls ending phase：Unit speed is rolled less than 400m/min using permanent roll-force, its
In, the setting value of roll-force is set according to the average actual roll-force in elongation control stage.
2. skin pass mill group milling method as claimed in claim 1, it is characterised in that：In step a, steel grade and thickness specification foundation
Procedural model calls automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710833931.3A CN107695109B (en) | 2017-09-15 | 2017-09-15 | Skin pass mill group milling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710833931.3A CN107695109B (en) | 2017-09-15 | 2017-09-15 | Skin pass mill group milling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107695109A true CN107695109A (en) | 2018-02-16 |
| CN107695109B CN107695109B (en) | 2019-10-11 |
Family
ID=61172663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710833931.3A Active CN107695109B (en) | 2017-09-15 | 2017-09-15 | Skin pass mill group milling method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107695109B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040019732A (en) * | 2002-08-29 | 2004-03-06 | 재단법인 포항산업과학연구원 | Method for setting up the rolling load to acquire the constant elongation percentage in the skin pass mill, apparatus thereof |
| CN1840255A (en) * | 2005-03-28 | 2006-10-04 | 宝山钢铁股份有限公司 | Extension coefficient and plate shape integrated control method in steel strip flattening process |
| US20110113848A1 (en) * | 2009-11-16 | 2011-05-19 | Quad Engineering Inc. | Methods for reducing ridge buckles and annealing stickers in cold rolled strip and ridge-flattening skin pass mill |
| CN103866214A (en) * | 2014-03-05 | 2014-06-18 | 首钢总公司 | Smoothening optimization method for removing edge bending marks |
| CN104324950A (en) * | 2014-08-22 | 2015-02-04 | 攀钢集团攀枝花钢钒有限公司 | Steel rolling system and steel rolling method |
| CN106269861A (en) * | 2016-08-26 | 2017-01-04 | 首钢京唐钢铁联合有限责任公司 | Process method for flattening cold-rolled galvanized strip steel by utilizing flattening machine |
-
2017
- 2017-09-15 CN CN201710833931.3A patent/CN107695109B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040019732A (en) * | 2002-08-29 | 2004-03-06 | 재단법인 포항산업과학연구원 | Method for setting up the rolling load to acquire the constant elongation percentage in the skin pass mill, apparatus thereof |
| CN1840255A (en) * | 2005-03-28 | 2006-10-04 | 宝山钢铁股份有限公司 | Extension coefficient and plate shape integrated control method in steel strip flattening process |
| US20110113848A1 (en) * | 2009-11-16 | 2011-05-19 | Quad Engineering Inc. | Methods for reducing ridge buckles and annealing stickers in cold rolled strip and ridge-flattening skin pass mill |
| CN103866214A (en) * | 2014-03-05 | 2014-06-18 | 首钢总公司 | Smoothening optimization method for removing edge bending marks |
| CN104324950A (en) * | 2014-08-22 | 2015-02-04 | 攀钢集团攀枝花钢钒有限公司 | Steel rolling system and steel rolling method |
| CN106269861A (en) * | 2016-08-26 | 2017-01-04 | 首钢京唐钢铁联合有限责任公司 | Process method for flattening cold-rolled galvanized strip steel by utilizing flattening machine |
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| Publication number | Publication date |
|---|---|
| CN107695109B (en) | 2019-10-11 |
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