CN104324950B - A kind of rolling system and its method - Google Patents
A kind of rolling system and its method Download PDFInfo
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- CN104324950B CN104324950B CN201410419437.9A CN201410419437A CN104324950B CN 104324950 B CN104324950 B CN 104324950B CN 201410419437 A CN201410419437 A CN 201410419437A CN 104324950 B CN104324950 B CN 104324950B
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- elongation
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- 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
- B21B37/58—Roll-force control; Roll-gap control
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
- Metal Rolling (AREA)
Abstract
The present invention relates to steel rolling technology, it is therefore an objective to solves the problems, such as the defects of skin pass mill group elongation percentage in raising speed, down speeding procedure is fluctuated so as to which remained on surface is excessive after strip property inequality caused by influence of rolled pressure change and belt steel flating.A kind of rolling system provided by the invention and its method, including：Man-machine interface communication module, for carrying out data input and transmission；Main transmission speed detector, for detecting unit speed；Control module, the basic draught pressure and elongation percentage of the input data inputted according to man-machine interface communication module calculate compensation draught pressure and are combined, provide the draught pressure at initial stage of strip, and compared with according to the unit speed that main transmission speed detector detects and unit elongation percentage putting into setting minimum speed after determine final controlled rolling pressure, the input data includes material, specification and the elongation percentage of strip；Force system is rolled, controls executing agency to realize elongation control according to the draught pressure of control module.Suitable for steel rolling field.
Description
Technical field
The present invention relates to the rolling process of steel rolling technology, more particularly to cold rolling levelling unit strip.
Background technology
At present, domestic metallurgy industry cold rolling coil is in skin pass mill group Rolling production, controlled using elongation percentage it is smooth after
The performance of strip, elongation percentage is by constant-tension and becomes draught pressure to control, and is detected by encoder or laser velocimeter, due to
The acceleration of skin pass mill group is generally 0.6-0.8m/s2, unit is to reach setting elongation percentage, draught pressure meeting in boosting velocity procedure
Gradually increase, causing the plate shape in the stage can not adjust, and performance is unstable.Unit detects in high speed down speeding procedure due to existing
Error, draught pressure can drastically decline, and cause a large amount of surface quality that strip is influenceed with roll gap excessively of smooth lubrication, cooling agent, together
When the increase of strip property unstability.Both of these case the lighter causes product to be come down to a lower group, and severe one directly contributes product and cuts useless or user
Because performance does not conform to requirement of claiming compensation.
The content of the invention
Present invention aim to address skin pass mill group, elongation percentage is fluctuated so as to influence of rolled pressure in raising speed, down speeding procedure
The problem of the defects of remained on surface is excessive after strip property inequality caused by change and belt steel flating.
To reach above-mentioned purpose, the present invention provides a kind of rolling system, including：
Man-machine interface communication module, for carrying out data input and transmission；
Main transmission speed detector, for detecting unit speed；
Control module, according to man-machine interface communication module input input data corresponding to strip basic draught pressure and
Elongation percentage calculates compensation draught pressure and is combined, and provides the draught pressure at initial stage of strip, and according to main transmission velocity measuring
The unit speed that device detects and unit elongation percentage put into setting minimum speed compared with after determine final controlled rolling pressure,
The input data includes material, specification and the elongation percentage of strip；
Force system is rolled, controls executing agency to realize elongation control according to the draught pressure of control module；
The control module connects with man-machine interface communication module, rolling Force system and main transmission speed detector respectively
Connect；
The control module includes：
Condition handover module, put into according to the unit speed that main transmission speed detector detects and unit elongation percentage
The result selection that setting minimum speed is compared carries out draught pressure control or elongation control；
Elongation control system, for carrying out the adjustment of elongation percentage；
Average tube rolling simulation unit, for calculating draught pressure of the strip in the case of specific elongation steadily；
The condition handover module is connected with elongation control system and average tube rolling simulation unit respectively, the rolling
Force system is connected with elongation control system and average tube rolling simulation unit respectively；
When main transmission speed detector detects that unit speed reaches unit elongation percentage input setting minimum speed,
Condition handover module gates elongation control, when main transmission speed detector detects that unit speed prolongs again below unit
When stretching rate input setting minimum speed, condition handover module cancels elongation control and gates draught pressure control, the rolling pressure
Power is given by average roll pressure computing unit of the strip in the case of specific elongation steadily.
Specifically, elongation control system by encoder or laser velocimeter system controlled rolling Force system by draught pressure
Control executing agency realizes elongation control.
Correspondingly, steel rolling method corresponding to a kind of rolling system of the invention, comprises the following steps：A. man-machine interface receives
The input data of the strip of input is simultaneously transferred to controller；
B. controller calculates compensation draught pressure according to the basic draught pressure and elongation percentage of the strip and is combined, and provides
The draught pressure at initial stage of strip, and put into according to the unit speed that main transmission speed detector detects and unit elongation percentage
Setting minimum speed is adjusted after being compared to draught pressure；The unit detected according to main transmission speed detector
Speed and unit elongation percentage put into setting minimum speed compared with after be specially to the method that draught pressure is adjusted：Work as master
When transmission system speed detector detects that unit speed reaches unit elongation percentage input setting minimum speed, condition handover module
Elongation control is gated, is set when main transmission speed detector detects that unit speed is put into again below unit elongation percentage
During minimum speed, condition handover module cancels elongation control and gates draught pressure control, and the draught pressure is being prolonged by strip
The average roll pressure computing unit stretched under rate stable case gives；
C. Force system is rolled to be controlled the elongation percentage of the strip according to the order control executing agency of controller.
The input data of the strip includes material, specification and the elongation percentage of strip.In step B, according to main transmission
The unit speed that speed detector detects and unit elongation percentage put into setting minimum speed compared with after draught pressure is entered
Row adjustment method be specially：When main transmission speed detector detects that unit speed reaches the input setting of unit elongation percentage
During minimum speed, condition handover module gating elongation control, when main transmission speed detector detects unit speed again
During the secondary input setting minimum speed less than unit elongation percentage, condition handover module cancels elongation control and gates draught pressure control
System.Carry out elongation control and executing agency is controlled by draught pressure by encoder or laser velocimeter system controlled rolling Force system
Realize that elongation control is realized.
The beneficial effects of the invention are as follows：Effectively prevent skin pass mill group in raising speed, down speeding procedure elongation percentage fluctuation so as to
The defects of remained on surface is excessive after strip property inequality caused by influence of rolled pressure change and belt steel flating.
Brief description of the drawings
Fig. 1 is a kind of theory diagram of rolling system of embodiment.
Embodiment
Below in conjunction with the accompanying drawings and embodiment makees step description to technical scheme.
The present invention is for skin pass mill group in the rolling process of existing cold rolling levelling unit strip in raising speed and down speeding procedure
Derivative rate influence of fluctuations draught pressure change causes strip property uneven and the problem of remained on surface is excessive, proposes a kind of new
Steel rolling method, and devise a set of new rolling system for this method.
The specific processing step of steel rolling method provided by the invention is：First, man-machine interface receives the defeated of the strip of input
Enter data and be transferred to controller, the input data of strip includes material, specification and the elongation percentage of strip；Then, controller root
Compensation draught pressure is calculated according to the basic draught pressure and elongation percentage of strip to be combined, and provides the draught pressure at initial stage of strip, and
Compared with setting minimum speed being put into according to the unit speed that main transmission speed detector detects with unit elongation percentage
Draught pressure is adjusted afterwards, the specific method of adjustment is：When main transmission speed detector detects that unit speed reaches
When putting into setting minimum speed to unit elongation percentage, condition handover module gating elongation control, when main transmission speed is examined
When survey device detects that unit speed puts into setting minimum speed again below unit elongation percentage, condition handover module cancels elongation percentage
Control and gate draught pressure control, the draught pressure is calculated single by average roll pressure of the strip in the case of specific elongation steadily
Member is given.Finally, roll Force system to be controlled the elongation percentage of strip according to the order control executing agency of controller, carry out
Elongation control controls executing agency's realization to prolong by encoder or laser velocimeter system controlled rolling Force system by draught pressure
Rate control is stretched to realize.
Based on the above method, rolling system of the invention includes：
Man-machine interface communication module, for carrying out data input and transmission；
Main transmission speed detector, for detecting unit speed；
Control module, the basic draught pressure and elongation percentage of the input data inputted according to man-machine interface communication module calculate
Compensation draught pressure is combined, and provides the draught pressure at initial stage of strip, and detected according to main transmission speed detector
Unit speed and unit elongation percentage put into setting minimum speed compared with after determine final controlled rolling pressure, input data bag
Include the material, specification and elongation percentage of strip；
Force system is rolled, controls executing agency to realize elongation control according to the draught pressure of control module；
Control module is connected with man-machine interface communication module, rolling Force system and main transmission speed detector respectively.
Control module includes：
Condition handover module, put into according to the unit speed that main transmission speed detector detects and unit elongation percentage
The result selection that setting minimum speed is compared carries out draught pressure control or elongation control；
Elongation control system, for carrying out the adjustment of elongation percentage；
Average tube rolling simulation unit, for calculating draught pressure of the strip in the case of specific elongation steadily；
Condition handover module is connected with elongation control system and average tube rolling simulation unit respectively, rolling Force system point
It is not connected with elongation control system and average tube rolling simulation unit.
When main transmission speed detector detects that unit speed reaches unit elongation percentage input setting minimum speed,
Condition handover module gates elongation control, when main transmission speed detector detects that unit speed prolongs again below unit
When stretching rate input setting minimum speed, condition handover module cancels elongation control and gates draught pressure control, the rolling pressure
Power is given by average roll pressure computing unit of the strip in the case of specific elongation steadily.
Embodiment
As shown in figure 1, rolling system includes man-machine interface communication module, main transmission speed detector, control module
And rolling Force system.There are draught pressure control and elongation control condition handover module and average roll pressure in PLC
Computing unit, it is steel rolling speed to introduce switching condition in condition handover module, and the steel rolling velocity conditions are that elongation percentage is relatively stable
Minimum steel rolling speed, by main transmission speed detector, detection will be with steel material, specification, setting extension as operating personnel
After rate input HMI man-machine interfaces communication module activation, PLC is according to the material and the basic draught pressure of specification and extension
Rate calculates compensation draught pressure and is combined, and provides the draught pressure at initial stage of strip.Condition handover module selects rolling model, this
It is permanent draught pressure under part, and order is passed into rolling Force system, rolling Force system controls executing agency to start unit life again
Production, main transmission speed detector detection unit speed.
When main transmission speed detector detects that unit speed reaches unit elongation percentage input setting minimum speed,
Condition handover module gates elongation control, and order is passed into elongation control system, encoder or laser velocimeter system
Controlled rolling pressure system realizes elongation control by executing agency.
When main transmission speed detector detects that unit speed puts into setting lowest speed again below unit elongation percentage
When spending, condition handover module cancels elongation control and gates draught pressure control, and the draught pressure is by the band in PLC
Average roll pressure computing unit of the steel in the case of specific elongation steadily gives.
The steel rolling method effectively prevent skin pass mill group elongation percentage in raising speed, down speeding procedure and fluctuate so as to influence of rolled pressure
The defects of remained on surface is excessive after strip property inequality caused by power changes and belt steel flating.
Claims (5)
- A kind of 1. rolling system, it is characterised in that including：Man-machine interface communication module, for carrying out data input and transmission；Main transmission speed detector, for detecting unit speed；Control module, according to the basic draught pressure of strip and extension corresponding to the input data of man-machine interface communication module input Rate calculates compensation draught pressure and is combined, and provides the draught pressure at initial stage of strip, and examine according to main transmission speed detector The unit speed measured and unit elongation percentage put into setting minimum speed compared with after determine final controlled rolling pressure, it is described Input data includes material, specification and the elongation percentage of strip；Force system is rolled, controls executing agency to realize elongation control according to the draught pressure of control module；The control module is connected with man-machine interface communication module, rolling Force system and main transmission speed detector respectively；The control module includes：Condition handover module, set according to the unit speed that main transmission speed detector detects and unit elongation percentage input The result selection that minimum speed is compared carries out draught pressure control or elongation control；Elongation control system, for carrying out the adjustment of elongation percentage；Average tube rolling simulation unit, for calculating draught pressure of the strip in the case of specific elongation steadily；The condition handover module is connected with elongation control system and average tube rolling simulation unit respectively, the roll-force system System is connected with elongation control system and average tube rolling simulation unit respectively；When main transmission speed detector detects that unit speed reaches unit elongation percentage input setting minimum speed, condition Handover module gates elongation control, when main transmission speed detector detects unit speed again below unit elongation percentage During input setting minimum speed, condition handover module cancels elongation control and simultaneously gates draught pressure control, the draught pressure by Average roll pressure computing unit of the strip in the case of specific elongation steadily gives.
- 2. a kind of rolling system as claimed in claim 1, it is characterised in that elongation control system passes through encoder or laser Velocity-measuring system controlled rolling Force system realizes elongation control by draught pressure control executing agency.
- 3. a kind of steel rolling method, it is characterised in that comprise the following steps：A. man-machine interface receives the input data of the strip of input and is transferred to controller；B. controller calculates compensation draught pressure according to the basic draught pressure and elongation percentage of the strip and is combined, and provides strip Draught pressure at initial stage, and the unit speed detected according to main transmission speed detector is set with unit elongation percentage input Minimum speed is adjusted after being compared to draught pressure；The unit speed detected according to main transmission speed detector It is specially to the method that draught pressure is adjusted after compared with putting into setting minimum speed with unit elongation percentage：Work as main transmission When system speed detector detects that unit speed reaches unit elongation percentage input setting minimum speed, condition handover module gating Elongation control, when main transmission speed detector detects that unit speed is minimum again below the input setting of unit elongation percentage During speed, condition handover module cancels elongation control and gates draught pressure control, and the draught pressure is by strip in elongation percentage Average roll pressure computing unit under stable case gives；C. Force system is rolled to be controlled the elongation percentage of the strip according to the order control executing agency of controller.
- 4. a kind of steel rolling method as claimed in claim 3, it is characterised in that in step A, the input data of the strip includes Material, specification and the elongation percentage of strip.
- 5. a kind of steel rolling method as claimed in claim 3, it is characterised in that in step C, carry out elongation control and pass through coding Device or laser velocimeter system controlled rolling Force system realize elongation control by draught pressure control executing agency.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410419437.9A CN104324950B (en) | 2014-08-22 | 2014-08-22 | A kind of rolling system and its method |
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| CN201410419437.9A CN104324950B (en) | 2014-08-22 | 2014-08-22 | A kind of rolling system and its method |
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| CN104324950A CN104324950A (en) | 2015-02-04 |
| CN104324950B true CN104324950B (en) | 2017-11-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105251780B (en) * | 2015-11-11 | 2017-05-03 | 首钢总公司 | Control method for ductility fluctuation of temper mill |
| CN107695109B (en) * | 2017-09-15 | 2019-10-11 | 攀钢集团攀枝花钢钒有限公司 | Skin pass mill group milling method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4841611A (en) * | 1986-07-14 | 1989-06-27 | Kawasaki Steel Corporation | Work roll with dulled surface having geometrically patterned uneven dulled sections for temper rolling |
| JP3793515B2 (en) * | 2002-06-07 | 2006-07-05 | 新日本製鐵株式会社 | Steel sheet hot rolling method and apparatus |
| CN100421825C (en) * | 2005-08-30 | 2008-10-01 | 宝山钢铁股份有限公司 | Integrate optimized controlling means for planisher elongation roll-force, tension, and roll-bending force |
| CN100584476C (en) * | 2006-10-23 | 2010-01-27 | 宝山钢铁股份有限公司 | Tension control system and method for planetary gear structure tension roller type evener |
| CN101181723A (en) * | 2007-12-20 | 2008-05-21 | 攀枝花新钢钒股份有限公司 | Elongation controlling means for burnishing machine |
| CN102407240B (en) * | 2010-09-26 | 2013-10-16 | 鞍钢股份有限公司 | Method for controlling finishing elongation rate of strip steel by utilizing second flow |
| CN102553923B (en) * | 2011-12-31 | 2014-05-21 | 中冶南方（武汉）自动化有限公司 | Control method for self-adaption compensation of elongation of planisher |
| CN102873106B (en) * | 2012-09-29 | 2014-12-03 | 鞍钢股份有限公司 | Quick and precise elongation control method for temper mill |
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