CN106424156A - Cold tandem mill thickness control system and thickness control method of cold tandem mill process - Google Patents
Cold tandem mill thickness control system and thickness control method of cold tandem mill process Download PDFInfo
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- CN106424156A CN106424156A CN201610997706.9A CN201610997706A CN106424156A CN 106424156 A CN106424156 A CN 106424156A CN 201610997706 A CN201610997706 A CN 201610997706A CN 106424156 A CN106424156 A CN 106424156A
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- frame
- thickness
- calibrator
- cold
- continuous rolling
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Classifications
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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
- B21B37/18—Automatic gauge control
- B21B37/20—Automatic gauge control in tandem mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
- B21B38/04—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring thickness, width, diameter or other transverse dimensions of the product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Abstract
The invention provides a cold tandem mill thickness control system and a thickness control method of cold tandem mill process. The system comprises a feedback control unit. A first thickness measuring instrument and a second thickness measuring instrument are placed on both sides of a first cold tandem mill frame. A third thickness measuring instrument and a fourth speed measuring instrument are placed on both sides of a last cold tandem mill frame. A speed measuring instrument is placed behind each of the cold tandem mill frames except the first cold tandem mill frame to measure the strip speed of the corresponding frame. The feedback control unit receives the signals from all the speed measuring instruments and from the first, second, third and the fourth thickness measuring instruments, and controls the reduction rate and/or speed of all the cold tandem mill frames through a feedback control manner. The method comprises using any one system in the cold tandem mill thickness control system to control the thickness of the metal strip. The system and method avoids the problems that in the metal strip rolling process the sliding deformation leads to inaccurate thickness control and faults of the thickness measuring instrument affect the continuous production of the cold tandem mill.
Description
Technical field
The present invention relates to metal tape equipment for continuously rolling field, specifically, is related to one kind and can be used in precise control cold continuous rolling
The cold continuous rolling thickness control system of thickness of metal tape (for example, strip steel) and the method for controlling thickness of continuous cold rolling process in machine.
Background technology
In prior art, cold continuous rolling belongs to the conventional continuing rolling apparatus of metal tape (for example, strip steel).Company with strip steel
As a example by continuous rolling equipment, usual cold continuous rolling is by the multiple frames according to rolling direction (that is, strip steel traffic direction) order arrangement
Constitute.For example, cold rolling 5 frame tandem mill can be divided into 5 frames, be followed successively by No. 1 frame, No. 2 frames, No. 3 frames, No. 4 frames,
No. 5 frames, Main Function is the thickness that hot-strip reaches user's requirement after 5 frames are rolled, and 5 frame tandem mills are real
Now accurate THICKNESS CONTROL, reduces thickness deviation, and the reasonable disposition of milling train laser velocimeter and calibrator is most important, and milling train swashs
The major function of light kinemometer is the linear velocity for measuring strip steel in rolling-mill housing, and it is each that rolling mill thickness tester is mainly used for measurement milling train
Frame inlet/outlet thickness, by milling train control program, so as to realize the purpose of 5 frame tandem mill belt steel thickness control.
The configuration equipment of 5 frame tandem mill THICKNESS CONTROL is presently used for as shown in figure 1, mainly including thickness measuring before No. 1 frame
Calibrator X5D, No. 1 frame after calibrator X4D after calibrator X1D after instrument X1E, No. 1 frame, No. 4 frames, No. 5 frames
(N0.1STD), No. 2 frames (N0.2STD), No. 3 frames (N0.3STD), No. 4 frames (N0.4STD), No. 5 frames
(N0.5STD)；Wherein, X1E, X1D, X4D, X5D calibrator Main Function be measurement No. 1 frame before, after No. 1 frame, No. 4 frames
Afterwards, after No. 5 frames strip steel actual (real) thickness, before No. 1 frame calibrator X1E be used for No. 1 frame before the feedforward (#1FF), in advance
The strip thickness deviation that detection is entered before No. 1 frame, is calculated by No. 1 frame feedforward (#1FF), in No. 1 frame pressure of control
System PUC1, so as to eliminate the strip thickness deviation for entering before No. 1 frame, after No. 1 frame, calibrator X1D is detected through No. 1 frame
Strip thickness deviation after rolling, by No. 1 frame feedback control (#1FB and GM1), above system PUC1 disappears to act on No. 1 frame pressure
Except calibrator X5D detects No. 5 rack outlet thickness deviations after strip thickness deviation after No. 1 frame, No. 5 frames, by feedback AGC
Control No. 2 frames, No. 3 frames, No. 4 gantry speed, so as to eliminate thickness deviation after No. 5 frames.
Through research, inventor has found that the configuration mode of existing Multi-stand continuous rolling mill THICKNESS CONTROL has problems with：
First, it value of calculation, is that the rotating speed for being detected by encoder (PLG) is scaled band that between each frame, the linear velocity of strip steel is
The linear velocity of steel, is affected by the advancing slip factor of strip steel so that the linear velocity calculating of strip steel is inaccurate, so as to affect the thickness control of strip steel
Precision processed.
Second, 1 calibrator is only configured after last (for example, No. 5) frame, last (for example, No. 5) frame is surveyed
Thick instrument X5D breaks down, and affects the continuous production of the tandem mill.
3rd, in continuous flow procedure, after last (for example, No. 5) frame existing, calibrator X5D certainty of measurement is not
Standard, mill personnel cannot prepare to judge, impact product quality, the series of problems of existing milling train THICKNESS CONTROL configuration, sternly
The recasting about quality of production and Product Level.
Content of the invention
It is an object of the invention to solving at least one for having in the problems referred to above in prior art.For example, the present invention
One of purpose is to solve because of advancing slip in metal tape (for example, the strip steel) operation of rolling and THICKNESS CONTROL that cause is inaccurate asks
Topic.Another object of the present invention is to solving because being arranged at the calibrator fault after last frame of cold continuous rolling and shadow
Ring cold continuous rolling quantity-produced problem.
The thickness control system of cold continuous rolling is provided according to an aspect of the present invention.The THICKNESS CONTROL of the cold continuous rolling
Before and after the first frame that system includes feedback control unit, be separately positioned on cold continuous rolling, the first calibrator of both sides and second is surveyed
Thick instrument, it is separately positioned on the 3rd calibrator of both sides and the 4th calibrator, feedback control before and after last frame of cold continuous rolling
Unit processed receives the signal of the first, second, third and fourth calibrator and controls cold continuous rolling by feedback controling mode
The drafts of each frame and/or speed, the thickness control system of the cold continuous rolling also includes tachymeter, the tachymeter
Quantity only fewer than the frame quantity of cold continuous rolling one, and after cold continuous rolling each frame of other in addition to the first frame
A tachymeter is respectively provided with to determine the strip speed at corresponding frame；Feedback control unit also receives the letter of all tachymeters
Number, and the drafts by each frame of the further precise control cold continuous rolling of feedback controling mode and/or speed.
Preferably, the thickness control system of the cold continuous rolling may also include the 5th calibrator, the 5th calibrator with
4th calibrator side by side and be arranged on cold continuous rolling last frame rear side, and for correcting the deviation of the 4th calibrator
Or replace the 4th calibrator to provide signal to feedback control unit in the case of the failure of the 4th calibrator.
Preferably, the frame quantity of the cold continuous rolling is 3～7.
Preferably, the feedback control unit includes multiple encoders and realizes feedback control by the plurality of encoder
System.
Preferably, the tachymeter is laser velocimeter.
Another aspect provides a kind of method for controlling thickness of continuous cold rolling process.The thickness of the continuous cold rolling process
Degree control method can control the thickness of metal tape using the thickness control system of above-mentioned cold continuous rolling.
Preferably, the metal tape is strip steel.
It is an advantage of the current invention that：
1st, using each 1 set of increased tachymeter after other each frames in addition to the first frame, accurately, directly can measure
Strip steel linear velocity between each frame, can avoid affecting metal tape (for example, because being subject to metal tape (for example, strip steel) advancing slip phenomenon
Strip steel) thickness control accuracy.
2nd, using the calibrator for increasing newly after last frame, the newly-increased thickness measuring in cold continuous rolling continuous flow procedure
Instrument carries out the former calibrator thickness data on rear side of thickness monitoring, with last frame always and is contrasted so that milling train is operated
Personnel can accurately judge the true and accurate of thickness deviation after last frame, exclude and draw because former calibrator certainty of measurement declines
The thickness deviation for rising.
3rd, can be standby each other using two calibrators after last frame, a calibrator for participating in control occurs
Fault can not be used, and mill operator can be switched to an other calibrator in time, it is ensured that the continuous production of whole cold continuous rolling
And stable smooth operation, practical function is good.
Description of the drawings
Carry out the detailed description of the present invention below in conjunction with accompanying drawing, the features described above of the present invention and other purposes, feature and
Advantage will become apparent, wherein：
Fig. 1 shows the existing THICKNESS CONTROL configuration figure for 5 frame tandem mills；
Fig. 2 shows the schematic diagram of the thickness control system of the cold continuous rolling of one exemplary embodiment of the present invention.
Specific embodiment
The present invention is expanded on further with reference to specific embodiment.It should be understood that these embodiments are merely to illustrate the present invention
Rather than limit the scope of the present invention.In addition, it is to be understood that after the content for having read present invention instruction, people in the art
Member can be made various changes or modifications to the present invention, and these equivalent form of values equally fall within the application appended claims and limited
Scope.In the accompanying drawings, identical label will be understood to refer to identical element, feature and structure.
As shown in figure 1, the THICKNESS CONTROL configuration for being currently used for 5 frame tandem mills mainly includes calibrator before No. 1 frame
Calibrator X5D, No. 1 frame after calibrator X4D after calibrator X1D after X1E, No. 1 frame, No. 4 frames, No. 5 frames
(N0.1STD), No. 2 frames (N0.2STD), No. 3 frames (N0.3STD), No. 4 frames (N0.4STD), No. 5 frames
(N0.5STD)；X1E, X1D, X4D, X5D calibrator Main Function be measurement No. 1 frame before, after No. 1 frame, after No. 4 frames, 5
The actual (real) thickness of strip steel after number frame, before No. 1 frame, calibrator X1E is used for the feedforward (#1FF) before No. 1 frame, detects in advance
The strip thickness deviation for entering before No. 1 frame, is calculated by No. 1 frame feedforward (#1FF), the upper system of No. 1 frame pressure of control
PUC1, so as to eliminate the strip thickness deviation for entering before No. 1 frame, calibrator X1D detection after No. 1 frame is rolled through No. 1 frame
Strip thickness deviation afterwards, by No. 1 frame feedback control (#1FB and GM1), above system PUC1 eliminates 1 to act on No. 1 frame pressure
After strip thickness deviation after number frame, No. 5 frames, calibrator X5D detects No. 5 rack outlet thickness deviations, by feedback AGC control
System No. 2 frames, No. 3 frames, No. 4 gantry speed, so as to eliminate thickness deviation after No. 5 frames.
As shown in Fig. 2 the method for controlling thickness of the cold continuous rolling of one exemplary embodiment of the present invention and system are based on
Laser velocimeter V2D after No. 2 frames, laser velocimeter V3D after No. 3 frames is additionally arranged on the basis of Fig. 1 configuration, swashed after No. 4 frames
Calibrator X5D2 after laser velocimeter V5D and No. 5 frames after light kinemometer V4D, No. 5 frames.
Specifically, after No. 5 frames, calibrator X5D1 participates in milling train THICKNESS CONTROL, and the thickness deviation signal of detection, by MFG5
Second flow program is calculated, and (No. 5 frame second flow feedforwards are controlled for triggering MF5FB (No. 5 frame second flow feedback control) and MF5FF
System), No. 4 gantry speed are adjusted so that eliminate thickness deviation after No. 5 frames；After No. 5 frames, calibrator X5D2 is not involved in
THICKNESS CONTROL, primarily serving the purpose of carries out thickness monitoring in milling train continuous flow procedure, measures thickness data with calibrator X5D1
Contrasted so that mill personnel can accurately judge the verity of thickness deviation and accuracy after No. 5 frames, exclude because surveying
Thick instrument X5D1 certainty of measurement declines the thickness deviation for causing；
Specifically, calibrator X5D1 and calibrator X5D2 stand-by equipment each other after No. 5 frames, if participate in of control
Calibrator breaks down and can not use, and mill operator can be switched to another calibrator in time, it is ensured that 5 frame continuous-rollings
Continuous production.
Specifically, in rolling-mill housing the linear velocity of strip steel directly by 4 newly-increased laser velocimeter V2D, V3D, V4D,
V5D is detected, prevents the inaccuracy of the data that strip steel linear velocity is calculated in prior art by encoder (PLG).
Wherein, before No. 1 frame, calibrator X1E is used for the feedforward before No. 1 frame, before detection enters No. 1 frame in advance
Thickness deviation, is calculated by No. 1 frame feedforward FF1, the upper PUC1 of No. 1 frame pressure of control, is entered before No. 1 frame so as to eliminate
Thickness deviation；Calibrator X1D detection strip thickness deviation after No. 1 frame rolling after No. 1 frame, the deviation data is on the one hand
No. 1 frame feedback control (number 1FB and GM1) is participated in, No. 1 frame PUC1 of effect eliminates strip thickness deviation after No. 1 frame；Another
The strip steel linear speed degrees of data of the laser velocimeter VD2 detection for increasing newly after the aspect deviation signal and No. 2 frames was flowed through No. 2 frame seconds
Amount calculates (MFG2), is made by No. 2 frames second flow feedback control (MF2FB) and No. 2 frames second flow feedforward (MF2FF)
With No. 1 gantry speed controller (ASR1), No. 1 gantry speed is adjusted, eliminate strip thickness deviation after No. 1 frame.
Wherein, the laser velocimeter V3D for increasing newly after No. 3 frames detects strip steel linear velocity after No. 3 frames, by No. 3 frames
Second flow calculates MFG3, participates in No. 3 frames second flow feedback control (MF3FB), No. 3 frames second flow feedforward (MF3FF),
So that No. 2 gantry speed actuator ASR2 adjust No. 2 gantry speed, so as to eliminate strip thickness deviation after No. 3 frames.
Wherein, after laser velocimeter V4D No. 4 frames of detection for increasing newly after No. 4 frames after strip steel linear velocity, with No. 4 frames
The thickness deviation data of calibrator X4D detection, calculates MFG4 by No. 4 frame second flows, participates in No. 4 frame second flow feedback controls
System (MF4FB), No. 4 frames second flow feedforward (MF4FF) so that No. 3 gantry speed actuator ASR3 adjust No. 3 frame speed
Degree, so as to eliminate strip thickness deviation after No. 4 frames.
Wherein, after laser velocimeter V5D No. 5 frames of detection for increasing newly after No. 5 frames after strip steel linear velocity, with No. 5 frames
The thickness deviation data of calibrator X5D1 detection, calculates MFG5 by No. 5 frame second flows, participates in No. 5 frame second flow feedbacks
Control (MF5FB), No. 5 frames second flow feedforward (MF5FF) so that No. 4 gantry speed actuator ASR4 adjust No. 4 frames
Speed, so as to eliminate strip thickness deviation after No. 5 frames, No. 5 gantry speed are that the main of 5 frame tandem mills makes speed, it is impossible to adjust
Section.
In another exemplary embodiment of the present invention, the method for controlling thickness of continuous cold rolling process can adopt above-mentioned cold company
The thickness control system of milling train is controlling the thickness of metal tape.For example, metal tape can be strip steel.
Although with reference to the certain exemplary embodiments of the present invention present invention had been shown and described, but art technology
Personnel will be understood that, in the case of without departing from the spirit and scope of the present invention for being limited by claim and its equivalent, can enter
Various changes on row various forms and details.
Claims (7)
1. a kind of thickness control system of cold continuous rolling, including feedback control unit, is separately positioned on the first machine of cold continuous rolling
First calibrator of both sides and the second calibrator before and after frame, it is separately positioned on both sides before and after last frame of cold continuous rolling
3rd calibrator and the 4th calibrator, feedback control unit receives the signal of the first, second, third and fourth calibrator simultaneously
Control drafts and/or the speed of each frame of cold continuous rolling by feedback controling mode, it is characterised in that the cold continuous rolling
The method for controlling thickness of machine and system also include tachymeter, and the quantity of the tachymeter is only few by one than the frame quantity of cold continuous rolling
Individual, and a tachymeter is respectively provided with to determine at corresponding frame after cold continuous rolling each frame of other in addition to the first frame
Strip speed；Feedback control unit also receives the signal of all tachymeters, and is accurately controlled by feedback controling mode further
The drafts of each frame of refrigeration tandem mill and/or speed.
2. the thickness control system of cold continuous rolling according to claim 1, it is characterised in that the thickness of the cold continuous rolling
Control method and system also include the 5th calibrator, the 5th calibrator and the 4th calibrator side by side and are arranged on cold continuous rolling
Last frame rear side, and for correct the 4th calibrator deviation or the 4th calibrator failure in the case of generation
Signal is provided for the 4th calibrator to feedback control unit.
3. the thickness control system of cold continuous rolling according to claim 1, it is characterised in that the frame of the cold continuous rolling
Quantity is 3～7.
4. the thickness control system of cold continuous rolling according to claim 1, it is characterised in that the feedback control unit bag
Include multiple encoders and feedback control is realized by the plurality of encoder.
5. the thickness control system of cold continuous rolling according to claim 1, wherein, the tachymeter be.
6. a kind of method for controlling thickness of continuous cold rolling process, it is characterised in that the method for controlling thickness of the continuous cold rolling process makes
Thickness control system with the cold continuous rolling as described in any one in claim 1 to 5 is controlling the thickness of metal tape.
7. the method for controlling thickness of continuous cold rolling process according to claim 6, it is characterised in that the metal tape is band
Steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997706.9A CN106424156A (en) | 2016-11-11 | 2016-11-11 | Cold tandem mill thickness control system and thickness control method of cold tandem mill process |
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|---|---|---|---|
| CN201610997706.9A CN106424156A (en) | 2016-11-11 | 2016-11-11 | Cold tandem mill thickness control system and thickness control method of cold tandem mill process |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111069300A (en) * | 2019-12-30 | 2020-04-28 | 新疆八一钢铁股份有限公司 | Production method of cold-rolled super-thick high-precision motor casing steel |
| CN111229831A (en) * | 2020-01-19 | 2020-06-05 | 徐州工程学院 | Thickness control method for 1720mm strip steel cold continuous rolling unit |
| CN113145651A (en) * | 2021-04-02 | 2021-07-23 | 唐山钢铁集团有限责任公司 | Method for realizing second flow function based on cold continuous rolling mill TCS control system |
| JPWO2022049739A1 (en) * | 2020-09-04 | 2022-03-10 | ||
| CN114393033A (en) * | 2021-12-17 | 2022-04-26 | 天津市新宇彩板有限公司 | Rolling method for rolling 0.24mm ultrathin material by acid continuous rolling unit |
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| CN111069300A (en) * | 2019-12-30 | 2020-04-28 | 新疆八一钢铁股份有限公司 | Production method of cold-rolled super-thick high-precision motor casing steel |
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| CN111229831B (en) * | 2020-01-19 | 2021-09-10 | 徐州工程学院 | Thickness control method for 1720mm strip steel cold continuous rolling unit |
| JPWO2022049739A1 (en) * | 2020-09-04 | 2022-03-10 | ||
| KR20220051849A (en) * | 2020-09-04 | 2022-04-26 | 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 | Control system of tandem cold rolling mill |
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| CN113145651A (en) * | 2021-04-02 | 2021-07-23 | 唐山钢铁集团有限责任公司 | Method for realizing second flow function based on cold continuous rolling mill TCS control system |
| CN113145651B (en) * | 2021-04-02 | 2022-09-16 | 唐山钢铁集团有限责任公司 | Method for realizing second flow function based on cold continuous rolling mill TCS control system |
| CN114393033A (en) * | 2021-12-17 | 2022-04-26 | 天津市新宇彩板有限公司 | Rolling method for rolling 0.24mm ultrathin material by acid continuous rolling unit |
| CN114393033B (en) * | 2021-12-17 | 2024-04-05 | 天津市新宇彩板有限公司 | Rolling method for rolling 0.24mm ultrathin material by acid continuous rolling unit |
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Application publication date: 20170222 |
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