CN106391722A - Control method for solving problem of rolling narrowing of silicon steel tail of hot-rolled steel strip - Google Patents
Control method for solving problem of rolling narrowing of silicon steel tail of hot-rolled steel strip Download PDFInfo
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- CN106391722A CN106391722A CN201611064299.2A CN201611064299A CN106391722A CN 106391722 A CN106391722 A CN 106391722A CN 201611064299 A CN201611064299 A CN 201611064299A CN 106391722 A CN106391722 A CN 106391722A
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- kink
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- torque deviation
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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
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
- B21B37/22—Lateral spread control; Width control, e.g. by edge rolling
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- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention relates to the field of automatic control for finish rolling of a rolling line for continuous-hot-rolled strips. According to a control method for solving the problem of rolling narrowing of the silicon steel tail of a hot-rolled steel strip, a control procedure for adjusting the loop moment and the compensation speed is developed during silicon steel rolling by fully utilizing the characteristics of advancement and operability of the computer control technique, the hidden danger of movement abnormities of a loop is eliminated, the equipment fault time is shortened, the problem of rolling narrowing, caused by instability of the loop, of the tail of the steel strip is solved, the product quality is improved, and good benefits are achieved. The control method is suitable for control over a finish rolling machine for the hot-rolled steel strip.
Description
Technical field
The present invention relates to the finish rolling automation field of hot-continuous-rolling strip steel rolling line.
Background technology
In continuous rolling process, strip steel is intended to sting steel, to form tandem rolling and set up tension force, throw steel through head in mm finishing mill unit
Rolling sequence, thus looper just forms by a set, with strip steel swing and three main process that conform to a conventional pattern.In conventional kink control
In system, it has decoupled complete amount and two relative independent system of moment are controlled, and set amount is adjusted and adjusted by main frame speed
Realize, torque adjusting is carried out by kink servosystem.
With the increase of silicon steel variety development and blank substance, when finish rolling region rolls, due to tail part of band steel temperature
Step-down leads to tail part of band steel plate shape to change greatly, causes kink between finishing stand the regulation of kink moment and main frame speed not
Join, cause tail part of band steel drawing down, poor product quality, have a strong impact on being normally carried out of rolling line production, bring very big economic loss.
Content of the invention
The technical problem to be solved is：How to solve the drawing down phenomenon being caused by kink between finishing stand, protect
Card hot rolling produces normal and product quality.
The technical solution adopted in the present invention is：A kind of control method solving hot-strip silicon steel afterbody drawing down is according to such as
Under step carry out：
Step one, optimize tail part of band steel loop length and control it is ensured that strip steel kink moment, if strip steel tail when specially strip steel conforms to a conventional pattern
Portion's kink torque deviation be less than -1000 Nm when, not correction-compensation velocity amplitude, simultaneously quiescing work reduce gantry speed manually
Value；If tail part of band steel kink torque deviation is in -300 Nm～-1000 Nm scope when strip steel conforms to a conventional pattern, compensation speed value is former
Compensation speed；If tail part of band steel kink torque deviation is more than -300 Nm when strip steel conforms to a conventional pattern, according to the big light maintenance of torque deviation value
Positive answers looper compensation main frame velocity amplitude, revises value and is reduced to the 30%～70% of former compensation speed value of calculation, torque deviation value
Bigger correction value is less；
Step 2, tower-loop control give moment MREF, strip steel actual torque MF, kink torque deviation △ M=MREF–MF, single
Position：Nm, kink torque servo control device adaptive algorithm is as follows
Y =Kp* △ M is wherein
Y :The servo output of kink torque controller, scope is 0-1
Kp:Self adaptation proportionality coefficient is interval, and scope is 10*10-6-60*10-6
△M:Kink torque deviation
If tail part of band steel kink torque deviation is less than and chooses adaptation coefficient according to torque deviation during -1000 Nm when strip steel conforms to a conventional pattern
Kp, absolute value of the bias bigger adaptation coefficient KpValue is bigger, thus accelerating to adjust kink Torque Control.If carrying when strip steel conforms to a conventional pattern
Steel afterbody kink torque deviation is less than during -1000 Nm to be needed to choose adaptation coefficient K according to torque deviationp, absolute value of the bias gets over
Big adaptation coefficient KpValue is bigger, thus accelerating to adjust kink Torque Control；If tail part of band steel kink moment when strip steel conforms to a conventional pattern
When deviation is more than or equal to -1000 Nm, self adaptation Proportional coefficient KpValue is 10*10-6, the servo of kink torque controller is defeated
Go out to export normal regulating.
The invention has the beneficial effects as follows：Solve the steel scrap that the empty set of kink causes and solve kink to help pull a cart and cause
Tail part of band steel drawing down problem is it is ensured that stability contorting between hot-rolling finishing mill frame.Solve hydraulic pressure between hot-rolling finishing mill frame
Kink stability, decreases the cancel closedown time.Rationally solve the relation that kink torque adjusting and kink speed adjusts it is ensured that
Kink action is normal；Also ensure that product width precision simultaneously, decrease cut useless.
Specific embodiment
If tail part of band steel kink torque deviation is in -300 Nm～-1000 Nm scope when strip steel conforms to a conventional pattern, using existing
Technological means, between finishing stand, kink kink moment and main frame speed to adjust is not in mismatch, causes strip steel tail
The problem of portion's drawing down, but if tail part of band steel kink torque deviation conforms to a conventional pattern more than -300 Nm or strip steel when strip steel conforms to a conventional pattern
If tail part of band steel kink torque deviation is less than -1000 Nm, tail part of band steel plate shape can be led to due to tail part of band steel temperature step-down
Change is big, causes kink between finishing stand kink moment and adjusts mismatch with main frame speed, causes tail part of band steel drawing down, produce
Quality is poor, has a strong impact on being normally carried out of rolling line production.The present invention is precisely in order to solve the above problems.
It is by the looper compensation main frame velocity interpolation of regulation upstream stand that loop length controls, and simultaneously according to frame
Speed distributes the velocity amplitude of each frame in upstream by moving principle, to guarantee second flow coupling between related frame, makes set amount regulating system
Normal work.
Kink torque deviation is to set moment to deduct actual torque, in low set position, kink then shows that kink actual set amount is less than
Given set amount.It is proposed that kink torque deviation will when tail part of band steel is in low set position in silicon steel rolling afterbody kink conforms to a conventional pattern control
Guarantee more than zero.Because kink is when low set position, this machine frame loop should be increased according to set amount conventional control Adjustment principle and compensate speed
Degree plays set with quick, if now torque deviation will aggravate the empty set of kink more than zero increase compensation speed, leads to belt steel rolling
Abnormal, need for this to keep compensation speed constant or reduce compensation speed.It is described as follows：Set amount is adjusted will be according to strip steel tail
Portion's kink torque deviation（Set moment and deduct actual torque）Revise looper compensation main frame speed to guarantee the not empty set of strip steel, low
Set position erection rate principle.
Taking silicon 60 strip steel 4#, 5# kink as a example
For loop control：When tail part of band steel conforms to a conventional pattern and during low set position, if former compensation speed value of calculation should be 0.05m/s（Former benefit
Repaying speed is to have determined in prior art, and the present invention does not separately explain）, now 4# kink torque deviation is as 100 Nm,
Then need to revise the compensation speed value that 4# kink gives F4 frame, compensation speed correction value is reduced to 50% and is 0.025 m/
s；If 5# kink torque deviation is -1100 Nm, forbids revising 5# kink and give the compensation speed value of F5 frame and as compensate speed
Quiescing work intervenes F5 gantry speed value to degree value of calculation simultaneously.
For Torque Control：During tail part of band steel conforms to a conventional pattern, if tail part of band steel 4# kink torque deviation for 500 Nm is
During more than -1000 Nm, self adaptation Proportional coefficient KpValue is 10*10-64# kink servo exports normal regulating；If strip steel tail
When 5# kink torque deviation in portion is that -2000 Nm are less than -1000 Nm, self adaptation Proportional coefficient KpValue is 20*10-6Accelerate
5# kink servo exports, it is to avoid hightension drawing down strip steel.
Claims (1)
1. a kind of control method solving hot-strip silicon steel afterbody drawing down is it is characterised in that carry out according to the steps：
Step one, optimize tail part of band steel loop length and control it is ensured that strip steel kink moment, if strip steel tail when specially strip steel conforms to a conventional pattern
Portion's kink torque deviation be less than -1000 Nm when, not correction-compensation velocity amplitude, simultaneously quiescing work reduce gantry speed manually
Value；If tail part of band steel kink torque deviation is in -300 Nm～-1000 Nm scope when strip steel conforms to a conventional pattern, compensation speed value is former
Compensation speed；If tail part of band steel kink torque deviation is more than -300 Nm when strip steel conforms to a conventional pattern, according to the big light maintenance of torque deviation value
Positive answers looper compensation main frame velocity amplitude, revises value and is reduced to the 30%～70% of former compensation speed value of calculation, torque deviation value
Bigger correction value is less；
Step 2, tower-loop control give moment MREF, strip steel actual torque MF, kink torque deviation △ M=MREF–MF, single
Position：Nm, kink torque servo control device adaptive algorithm is as follows
Y =Kp* △ M is wherein
Y :The servo output of kink torque controller, scope is 0-1
Kp:Self adaptation proportionality coefficient is interval, and scope is 10*10-6-60*10-6
△M:Kink torque deviation
If needs choose self adaptation according to torque deviation when when strip steel conforms to a conventional pattern, tail part of band steel kink torque deviation is less than -1000 Nm
COEFFICIENT Kp, absolute value of the bias bigger adaptation coefficient KpValue is bigger, thus accelerating to adjust kink Torque Control；When strip steel conforms to a conventional pattern
If tail part of band steel kink torque deviation is more than or equal to -1000 Nm, self adaptation Proportional coefficient KpValue is 10*10-6, kink
The servo output output normal regulating of torque controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064299.2A CN106391722B (en) | 2016-11-28 | 2016-11-28 | A kind of control method for solving hot-strip silicon steel afterbody drawing down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611064299.2A CN106391722B (en) | 2016-11-28 | 2016-11-28 | A kind of control method for solving hot-strip silicon steel afterbody drawing down |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106391722A true CN106391722A (en) | 2017-02-15 |
| CN106391722B CN106391722B (en) | 2018-04-03 |
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| CN201611064299.2A Active CN106391722B (en) | 2016-11-28 | 2016-11-28 | A kind of control method for solving hot-strip silicon steel afterbody drawing down |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421830A (en) * | 2018-02-27 | 2018-08-21 | 首钢京唐钢铁联合有限责任公司 | A kind of self-adaptation control method and device |
| CN109092892A (en) * | 2018-06-20 | 2018-12-28 | 新疆八钢铁股份有限公司 | Prevent the milling method that tail part of band steel is rolled brokenly |
| CN109226288A (en) * | 2018-11-02 | 2019-01-18 | 马鞍山钢铁股份有限公司 | A kind of loop control method being related to when hot-strip tail portion rolls |
| CN110340144A (en) * | 2019-07-02 | 2019-10-18 | 北京首钢股份有限公司 | A kind of hot rolling method of thin gauge ultra high silicon silicon steel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11156416A (en) * | 1997-12-01 | 1999-06-15 | Sumitomo Metal Ind Ltd | Control method for rolling mill |
| CN101661298A (en) * | 2009-08-07 | 2010-03-03 | 山西太钢不锈钢股份有限公司 | Method for controlling micro-tension of hot strip rolling looper |
| CN103272856A (en) * | 2013-05-24 | 2013-09-04 | 山西太钢不锈钢股份有限公司 | Hot continuous rolling stainless steel strip steel tail portion loop control method |
| CN104307884A (en) * | 2014-09-03 | 2015-01-28 | 山西太钢不锈钢股份有限公司 | Control method for loop falling of hot continuous rolling silicon-steel tail loop |
-
2016
- 2016-11-28 CN CN201611064299.2A patent/CN106391722B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11156416A (en) * | 1997-12-01 | 1999-06-15 | Sumitomo Metal Ind Ltd | Control method for rolling mill |
| CN101661298A (en) * | 2009-08-07 | 2010-03-03 | 山西太钢不锈钢股份有限公司 | Method for controlling micro-tension of hot strip rolling looper |
| CN103272856A (en) * | 2013-05-24 | 2013-09-04 | 山西太钢不锈钢股份有限公司 | Hot continuous rolling stainless steel strip steel tail portion loop control method |
| CN104307884A (en) * | 2014-09-03 | 2015-01-28 | 山西太钢不锈钢股份有限公司 | Control method for loop falling of hot continuous rolling silicon-steel tail loop |
Non-Patent Citations (2)
| Title |
|---|
| 彭开香等: "热连轧机活套升落套动态过程分析与改进", 《轧钢》 * |
| 李家波等: "改进的活套控制技术开发与应用", 《冶金自动化》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108421830A (en) * | 2018-02-27 | 2018-08-21 | 首钢京唐钢铁联合有限责任公司 | A kind of self-adaptation control method and device |
| CN108421830B (en) * | 2018-02-27 | 2019-09-20 | 首钢京唐钢铁联合有限责任公司 | A kind of self-adaptation control method and device |
| CN109092892A (en) * | 2018-06-20 | 2018-12-28 | 新疆八钢铁股份有限公司 | Prevent the milling method that tail part of band steel is rolled brokenly |
| CN109226288A (en) * | 2018-11-02 | 2019-01-18 | 马鞍山钢铁股份有限公司 | A kind of loop control method being related to when hot-strip tail portion rolls |
| CN110340144A (en) * | 2019-07-02 | 2019-10-18 | 北京首钢股份有限公司 | A kind of hot rolling method of thin gauge ultra high silicon silicon steel |
| CN110340144B (en) * | 2019-07-02 | 2021-01-08 | 北京首钢股份有限公司 | Hot rolling method for thin-specification ultrahigh silicon steel |
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| Publication number | Publication date |
|---|---|
| CN106391722B (en) | 2018-04-03 |
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