CN105522000A - Vibration inhibiting method of cold continuous rolling unit - Google Patents
Vibration inhibiting method of cold continuous rolling unit Download PDFInfo
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- CN105522000A CN105522000A CN201410522168.9A CN201410522168A CN105522000A CN 105522000 A CN105522000 A CN 105522000A CN 201410522168 A CN201410522168 A CN 201410522168A CN 105522000 A CN105522000 A CN 105522000A
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Abstract
The invention discloses a vibration inhibiting method of a cold continuous rolling unit. The method comprises the following steps: 1) arranging a cold rolling unit vibration monitoring device on a fifth or fourth rack of the cold continuous rolling unit which is a five-rack continuous rolling machine, namely, mounting a vibration sensor on a rack housing; transmitting a rolling machine vibration signal to a data acquiring device through the vibration sensor; acquiring and processing the vibration signal through the data acquiring device, and then supplying to the rolling machine vibration monitoring device; determining whether the rolling machine vibrates by the rolling machine vibration monitoring device according to the energy magnitudeof the vibration signal; 2) arranging liquid jetting devices which can independently adjust the flow rate in front of an emulsified liquid jetting beam at an inlet of the fifth or fourth rack of the rolling machine, and jetting the liquid on the upper surface and the lower surface of a strip belt; and 3) determining to start or stop the liquid jetting devices according to the energy value of the of the rolling machine vibration signal monitored by the rolling machine vibration monitoring system or a forward sliding value calculated by a forward sliding value calculating model.
Description
Technical field
The invention belongs to cold continuous rolling, be specifically related to a kind of tandem mills vibration suppressing method.
Background technology
Along with the fast development of modern rolling equipment, produce the demand of product towards high speed, very thin and high strengthening development.But well-known, in the production scene of modern cold-rolling mill, inevitably face the vibration failure of equipment when rolling.This phenomenon and mechanical resonance phenomenon similar to some extent, be usually expressed as the rolling-mill housing exceeding certain mill speed aborning can produce one and have trembling of substantially fixing frequency, now rolling mill vibration can form again the thickness fluctuation of vertical direction on band steel usually, cause time serious roll to band light and shade replace surface pattern or cause impression on roll, and the fault in production that strip breaks etc. is serious.
The formation mechenism of cold mill complex vibration problem not yet can be resolved at present completely, but main research all shows to vibrate and may stem from how each frame rolls band steel to the band front and back stretching action of steel and single frame topping roll and interaction in roll gap is relevant.By a large amount of practices at the scene, usually find that the vibration frequency form of cold mill complex appearance is mainly assembled and appear at frequency tripling section, vibration frequency is 120 ~ 250Hz; Or fifth harmonic section, vibration frequency is 500 ~ 700Hz; In this two large class vibration, the former can cause thickness of strip defect and fracture, and the latter is easy to be formed the surperficial trace of rolling roll strip.Once occur directly affecting production.
In the face of problems, still there is no reliable solution and unit can only alleviate the vibration of milling train usually by the counter-measure such as reduction of speed, roll change, but so can affect the production efficiency of unit.Therefore, the rolling mill vibration problem how eliminating cold rolling production is the research emphasis that iron and steel enterprise pays close attention to always.
As Chinese patent CN200580021274.8 proposes a kind of method of machinery to reduce vibration, the thought of its essential core installs a Vibrant buffer mechanism on the framework memorial archway of each milling train, it is inner adopt have certain viscosity cannot compressed fluid as vibrational energy cushion to reduce the transmission of vibration frequency to play the object reducing rolling mill vibration.
Chinese patent CN200980122983.9 proposes the method suppressing frequency tripling to vibrate in the production process of milling train,, on production equipment, vibration monitoring device is installed in simple terms, real-time measuring vibrations situation, and on the screw-down of roll, set up the adjustment actuating mechanism of a hydraulic pressure, regulate to roll applying loading load the vibration eliminated and roll is formed by continuous.
Japan Patent JP8-238510 proposes the suppressing method of another kind of cold rolling mill vibration, rolling equipment is provided with auxiliary deflection roller, is constantly revised, reduce operation of rolling vibration equipment with this by the continuous adjustment of this roller to the tension force before and after frame.
Chinese patent CN201110116180.6 (a kind of roller system of rolling mill equipment for inhibiting of vibration, University of Science & Technology, Beijing) give another kind of cold mill complex rolling vibration removing method, concrete is exactly in the operation of rolling, the apparatus installation of vibration monitoring is played in milling equipment the effect of monitoring industrial processes rolling mill vibration at any time, the position of simultaneously the bearing block surrounding of roll installation hydraulic cylinder being carried out regulating shaft bearing offsets the vibration of the rolling generation be checked through at monitoring equipment in real time.
Chinese patent CN201210456110.X proposes a kind of method and apparatus of control rolling mill vibration completely newly, be exactly by the power conveying system bulk cargo monitoring equipment at milling train in simple terms, when the actual torque that milling train is monitored to is in a certain excessive or too small value, system had both judged that milling train was in torsional state, now control drive motors autoregulation and change to the actual torque of roll, and change the amount that rack outlet place is ejected into working roll/band steel rider seam region emulsion in real time, now the roll pressure moment of torsion of production process is changed, and change the amount of emulsion at rack outlet place and Frotteurism is changed, under joint effect, vibration is controlled.
Chinese patent CN201310446068.8 proposes a kind of working concentration computational methods considering the face milling train under suppression rolling Vibration Condition, core concept is scratched by reasonable consideration milling train, skid, the influence factors such as outlet high speed, a kind of computational methods that the appropriate emulsified liquid of vibration occurs when tandem mill can be suppressed to produce are proposed, when its essence is exactly reasonable employment rolling the concentration of emulsion make the thickness of lubricating oil in contact in rolling suitable and play by rolling machine system generate vertical vibration weaken with carrying out damping action, the effect that final whole rolling mill vibration is suppressed.
The various rolling mill vibration control methods that each above-mentioned patent proposes, totally can be divided into two large classes: one is by installing mechanical actuation gear in milling equipment, in order to absorb vibrational energy transmission during rolling mill vibration, or the roll displacement etc. produced during back elimination vibration changes the generation suppressing to vibrate; Another kind of vibration countermeasure mainly adopts the Frotteurism regulating the operation of rolling, makes the band of operation of rolling steel-lubricating oil play damping action and suppresses oscillation phenomenon.
First kind method effectively can control the generation vibrated principle, and there is very wide applicability, but the mechanical device that these class methods propose is limited to prior art level, do not consider the feature of the milling train plant equipment of the quick formation of rolling vibration (especially frequency tripling self-excited vibration) and reality, the various mechanical devices proposed do not possess operability in actual production or on installing space, or complicated in mechanical structure is difficult to make, or have in response speed and be still difficult to match with existing milling train high-speed production, therefore there is not the precedent of practical application.And change the method for rolling friction, then there is certain practicality, but aforementioned patent changes the way of rack outlet emulsion emitted dose, reckon without the huge cooling effect of emulsion, the production problem that may cause in addition to vibration is used in actual production, deficiency as emulsification liquid measure causes the not good heat that causes of Rolling Production cooling to scratch, or crosses the risk of lubricating and causing milling train skidding and Strip Shape Control fluctuation etc.; In addition; because modernization large-scale cold rolling unit can be equipped with the emulsion using volume to reach hundreds of cubic metres usually; thus the method for aforementioned change concentration of emulsion used then needs to operate the long-time Variable Composition operation that one to a few hours of cost do not wait usually at every turn, and overall process is slowly therefore actual does not have practicality.
Can find out, above-mentioned most patent, in the problem solving cold-rolling mill production vibration, all also exists some and is difficult to use or face the not good problem of result of use.A kind of method is proposed in the present invention.
Summary of the invention
The object of this invention is to provide a kind of tandem mills vibration suppressing method, can the comparatively easy and rolling mill vibration that can comparatively effectively control in cold continuous rolling high speed manufacturing processes.
For achieving the above object, technical scheme of the present invention is:
The present invention arrange in the porch of milling train the 5th or the 4th frame a set of can the liquid injection apparatus of adjust flux separately, to the mixture of band steel upper and lower surface injection water, ROLLING OIL and water, thus improve the lubricating condition in mill roll-gap, suppress the generation of rolling mill vibration.In the present invention, the switch of liquid injection apparatus is that the size of the advancing slip value that the size of the rolling mill vibration signal energy value monitored by rolling mill vibration monitoring system or advancing slip value computation model calculate determined.
Concrete, a kind of tandem mills vibration suppressing method of the present invention, it comprises the steps:
1) cold mill complex vibration monitoring device is set in the 5th or the 4th frame of five Stands Cold Tandem Mill groups, namely on framework memorial archway top, vibrating sensor is installed, rolling mill vibration signal sends data acquisition unit to by vibrating sensor, data acquisition unit is supplied to rolling mill vibration monitoring device after carrying out acquisition process to vibration signal, by the energy size of vibration signal, rolling mill vibration monitoring device judges whether milling train will vibrate;
2) before the entrance emulsion injection beam of the 5th or the 4th frame of milling train, arranging can the liquid injection apparatus of independent adjust flux, and inject liquid in band steel upper and lower surface, the liquid of injection is pure water or concentration is the ROLLING OIL of less than 2% and the mixture of water; Atomizing of liquids pressure is between 5.0 ~ 8.5bar, and the injection flow on unit strip width is no less than 0.005m3/ (mmin);
3) when milling train is normally produced, the rolling mill vibration energy value g < g namely measured by rolling mill vibration system
0, g
0rolling mill vibration threshold values, and advancing slip value a < a
mtime, a
madvancing slip alarming value, closes the Liquid inject piping installation being arranged on milling train the 5th or the 4th frame entrance side; Described rolling mill vibration energy value g is generally in the level of 0.05 ~ 0.2G, rolling mill vibration threshold values g
0generally in the level of 0.4 ~ 0.6G, advancing slip value a is 0.975-0.995, advancing slip alarming value a
mvalue is between 1.003-1.02;
When milling train is produced, when the 5th or the 4th frame actual band steel exports mill speed V is greater than a certain velocity amplitude V
0time; And the vibrational energy value g of the 5th or the 4th frame is more than g
0time, now think that the operation of rolling faces vibration risk, open the liquid injection apparatus being arranged on milling train the 5th or the 4th frame entrance side and carry out Liquid inject; Described rolling mill speed threshold values V
0usually between 300-800m/min;
Advancing slip value computation model transfers the production real data of collecting real time record in the operation of rolling from mill control system, and calculates by the following method:
Wherein:
R
*: roll flattening radius, mm;
φ: neutral angle, °;
H: rack outlet belt steel thickness, mm;
Roll flattening radius R * is by following formulae discovery:
Wherein:
R: roller radius, mm;
γ: roll Poisson's coefficient:
E: Young's modulus, Mpa;
H: frame strip steel at entry thickness, mm;
P: roll-force, N;
B: strip width, mm;
Neutral angle φ calculates according to the following equation:
Wherein:
γ: reduction ratio, %;
μ: coefficient of friction;
H
1: supplied materials thickness, mm;
K
0, m, n: calculate the coefficient of resistance of deformation, 0 < k
0< 1000,0 < m, n < 2; Coefficientoffrictionμ calculates according to the following equation:
Wherein:
μ
0: calculation of friction coefficient coefficient, 0 ~ 0.3;
M
1, m
2, m
2: the coefficient relevant to ROLLING OIL, 0 < m
1, m
2, m
2< 2;
V: mill speed, m/min;
Obtain a value of described step, when its value is greater than a certain advancing slip alarming value a
mtime, open the liquid injection apparatus being arranged on the 5th or the 4th frame entrance side, injection pure water or concentration are the ROLLING OIL of C and the mixture of water, until a value is less than a
mor rolling mill vibration energy value g is less than g
0time, stop the liquid injection apparatus atomizing of liquids of the 5th or the 4th frame entrance side.
Further, each frame of described tandem mills is 4 roller mills or 6 roller mills.
Again, the liquid of described injection is the mixture of water, ROLLING OIL and water.
In addition, described Liquid inject sprays to vertically or deflecting certain angle during frame strip steel at entry top and bottom to described band steel by described liquid injection apparatus, and deflection angle is arranged in vertical direction being within the scope of ± 5 °.
The present invention is provided with in the porch of milling train the 5th or the 4th frame can the liquid injection apparatus of adjust flux separately, and the size of advancing slip value that the rolling mill vibration alarm signal provided according to rolling mill vibration monitoring system or advancing slip value computation model calculate, judge that the switch of liquid injection apparatus closes, thus the lubricating status improved before milling train vibrates in mill roll-gap, suppress the generation of rolling mill vibration.
The advantage of hinge structure of the present invention is:
The present invention only need increase liquid injection apparatus and the rolling mill vibration measurement mechanism of band steel upper and lower surface at rolling-mill housing entrance side, the equipment of the technology used is simple and reliable, without the need to transforming milling equipment, also without the need to changing the rolling procedure in the normal operation of rolling, the vibration problem in milling train high speed manufacturing processes can effectively simply be suppressed.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of Vibration Suppression System of the present invention;
Fig. 2 is liquid injection apparatus installation site schematic diagram before frame of the present invention;
Fig. 3 is the schematic diagram of liquid injection apparatus control method of the present invention;
Fig. 4 is rolling mill vibration signal schematic representation in the normal operation of rolling in embodiment;
Rolling mill vibration signal schematic representation when Fig. 5 is threshold vibration in embodiment.
Detailed description of the invention
See Fig. 1 ~ Fig. 5, tandem mills vibration suppressing method of the present invention, 5th or the 4th frame 1 of five Stands Cold Tandem Mill groups arranges cold mill complex vibration monitoring device 2, namely on framework memorial archway top, vibrating sensor is installed, rolling mill vibration signal is sent to the data acquisition unit in vibration monitoring device by vibrating sensor, data acquisition unit is supplied to rolling mill vibration monitoring device 2 after carrying out acquisition process to vibration signal, by the energy size of vibration signal, rolling mill vibration monitoring device judges whether milling train will vibrate.
Before the entrance emulsion injection beam of the 5th or the 4th frame of milling train, arranging can the liquid injection apparatus 3 of independent adjust flux; Liquid injection apparatus controller 4 receives rolling mill vibration monitoring device 2 and computer for controlling 5 (advancing slip value computation model), and 100 is roll control system.
In the present embodiment, the 4th frame in five Stands Cold Tandem Mills installs liquid injection apparatus 3.Production steel grade is DP980, and strip steel at entry width is 1003mm, and inlet thickness is 2.3mm, and exit thickness is 0.8mm.Now, each optimum configurations in the rolling mill vibration suppressing method proposed in the present invention is as follows: rolling mill vibration energy threshold g
0be the 0.5, the 4th frame mill speed threshold values V
0for 400m/min, advancing slip alarming value a
mbe 1.01, atomizing of liquids concentration is 1.8%, the liquid injection apparatus being arranged on the 4th frame entrance vertically sprays in band steel upper and lower surface.
This coil of strip rolling initial stage mill speed is lower, is approximately 200m/min, lower than the 4th frame mill speed threshold values V
0for 400m/min, and advancing slip value a near 0.99 with the amplitude fluctuation of ± 0.005, rolling mill vibration signal is in more stable level, fluctuate in the scope of 0.1 ~ 0.2G, see Fig. 4, now, the liquid injection apparatus being installed on the 4th frame entrance is in closed condition.
Along with mill speed is promoted to 800m/min, rolling mill vibration energy value reaches the interior fluctuation of scope of 0.3 ~ 0.5G, and advancing slip value reaches about 1.005, and has the fluctuation of certain amplitude, sees Fig. 5.Along with the carrying out of the operation of rolling, when the operation of rolling proceeds to 83 seconds, rolling mill vibration energy g value exceedes vibration alarming threshold values g
0value (0.5G), advancing slip value a value also reaches 1.012 simultaneously, has exceeded advancing slip alarming value a
m=1.01, now the alarm signal of rolling mill vibration monitoring device and advancing slip value computation model received by liquid injection apparatus controller, open the liquid injection apparatus being in the 4th frame entrance, and be the emulsion of 1.8% to band steel upper and lower surface injection concentration, thus the Frotteurism improved between band steel and roll, rolling mill vibration energy g value drops to the level of 0.3 ~ 0.4G gradually, and advancing slip value a is also reduced to about 1.0 gradually, and now liquid injection apparatus controller is by closing liquid injection line.
The present invention, mainly for being easy to the not enough present situation that vibration effect production efficiency occurs during traditional cold mill milling, proposes a kind of method in cold-rolling mill vibration suppression, to improve the efficiency of cold-rolling process and to reduce the vibrative probability of rolling.The principle that realizes of the present invention is simple, and relevant device is ripe and install convenient, more efficiently can reduce the incidence vibrated when producing band steel, not have special demand, have higher application and popularization value to produced on-site and operation.
Claims (4)
1. a tandem mills vibration suppressing method, is characterized in that, comprises the steps:
1) vibration monitoring device is set in the 5th or the 4th frame of five Stands Cold Tandem Mill groups, namely on framework memorial archway top, vibrating sensor is installed, rolling mill vibration signal sends data acquisition unit to by vibrating sensor, data acquisition unit is supplied to rolling mill vibration monitoring device after carrying out acquisition process to vibration signal, by the energy size of vibration signal, rolling mill vibration monitoring device judges whether milling train will vibrate;
2) before the 5th or the 4th frame entrance emulsion injection beam of milling train, arranging can the liquid injection apparatus of independent adjust flux, and inject liquid in band steel upper and lower surface, the liquid of injection is pure water or concentration is the ROLLING OIL of less than 2% and the mixture of water; Atomizing of liquids pressure is between 5.0 ~ 8.5bar, and the injection flow on unit strip width is no less than 0.005m
3/ (mmin);
3) when milling train is normally produced, the rolling mill vibration energy value g < g namely measured by rolling mill vibration system
0, g
0rolling mill vibration threshold values, and advancing slip value a < a
mtime, a
madvancing slip alarming value, closes the liquid injection apparatus being arranged on milling train the 5th or the 4th frame entrance side; Described rolling mill vibration energy value g is generally in the level of 0.05 ~ 0.2G, rolling mill vibration threshold values g
0generally in the level of 0.4 ~ 0.6G, advancing slip value a is 0.975-0.995, advancing slip alarming value a
mvalue is between 1.003-1.02;
When milling train is produced, when the 5th or the 4th frame actual band steel exports mill speed V is greater than a certain velocity amplitude V
0time; And the vibrational energy value g of the 5th or the 4th frame is more than g
0time, now think that the operation of rolling faces vibration risk, open the liquid injection apparatus being arranged on the 5th or the 4th frame entrance side and carry out Liquid inject; Described rolling mill speed threshold values V
0usually between 300-800m/min;
Advancing slip value computation model transfers the production real data of collecting real time record in the operation of rolling from mill control system, and calculates by the following method:
Wherein:
R
*: roll flattening radius, mm;
φ: neutral angle, °;
H: rack outlet belt steel thickness, mm;
Roll flattening radius R
*by following formulae discovery:
Wherein:
R: roller radius, mm;
γ: roll Poisson's coefficient:
E: Young's modulus, MPa;
H: frame strip steel at entry thickness, mm;
P: roll-force, N;
B: strip width, mm;
Neutral angle φ calculates according to the following equation:
Wherein:
γ: reduction ratio, %;
μ: coefficient of friction;
H
1: supplied materials thickness, mm;
K
0, m, n: calculate the coefficient of resistance of deformation, 0 < k
0< 1000,0 < m, n < 2; Coefficientoffrictionμ calculates according to the following equation:
Wherein:
μ
0: calculation of friction coefficient coefficient, 0 ~ 0.3;
M
1, m
2, m
2: the coefficient relevant to ROLLING OIL, 0 < m
1, m
2, m
2< 2;
V: mill speed, m/min;
Obtain a value of described step, when its value is greater than a certain advancing slip alarming value a
mtime, open the liquid injection apparatus being arranged on the 5th or the 4th frame entrance side, injection pure water or concentration are the ROLLING OIL of C and the mixture of water, until a value is less than a
mor rolling mill vibration energy value g is less than g
0time, stop the liquid injection apparatus atomizing of liquids of the 5th or the 4th frame entrance side.
2. tandem mills vibration suppressing method as claimed in claim 1, is characterized in that, installing at the 5th or the 4th frame entrance side of tandem mills can the liquid injection apparatus of independent adjust flux.
3. tandem mills vibration suppressing method as claimed in claim 1 or 2, it is characterized in that, described be arranged on the 5th or the 4th frame before liquid injection apparatus by described Liquid inject to band steel top and bottom time can vertically or deflect certain angle spray to described band steel, deflection angle is arranged centered by vertical direction in the scope of ± 5 °.
4. tandem mills vibration suppressing method as claimed in claim 1 or 2, it is characterized in that, described tandem mills is 4 roller mills or 6 roller mills.
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| CN201410522168.9A CN105522000B (en) | 2014-09-30 | 2014-09-30 | A kind of tandem mills vibration suppressing method |
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Cited By (8)
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| CN105855296A (en) * | 2016-05-18 | 2016-08-17 | 燕山大学 | Stability control method of mill roll system under nonlinear stiffness constraint of hydraulic cylinder |
| CN109078989A (en) * | 2018-08-07 | 2018-12-25 | 东北大学 | A kind of limit mill speed prediction technique of six-roll cold mill |
| WO2020020192A1 (en) * | 2018-07-26 | 2020-01-30 | 宝山钢铁股份有限公司 | Tension system optimization method for suppressing vibration of cold tandem rolling mill |
| CN110842031A (en) * | 2018-07-24 | 2020-02-28 | 宝山钢铁股份有限公司 | Emulsion flow optimization method for inhibiting vibration of cold continuous rolling unit |
| CN111085543A (en) * | 2018-10-23 | 2020-05-01 | 宝山钢铁股份有限公司 | Vibration monitoring and adjusting method for cold continuous rolling mill |
| CN111495980A (en) * | 2019-01-31 | 2020-08-07 | 宝山钢铁股份有限公司 | Method for setting reduction schedule of cold continuous rolling unit with vibration suppression as target |
| CN113226581A (en) * | 2018-12-27 | 2021-08-06 | 杰富意钢铁株式会社 | Method for detecting chatter of cold rolling mill, device for detecting chatter of cold rolling mill, cold rolling method, and cold rolling mill |
| CN113714309A (en) * | 2021-09-18 | 2021-11-30 | 北京首钢自动化信息技术有限公司 | Strip steel jitter elimination device and elimination method |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105855296A (en) * | 2016-05-18 | 2016-08-17 | 燕山大学 | Stability control method of mill roll system under nonlinear stiffness constraint of hydraulic cylinder |
| CN110842031A (en) * | 2018-07-24 | 2020-02-28 | 宝山钢铁股份有限公司 | Emulsion flow optimization method for inhibiting vibration of cold continuous rolling unit |
| US11534807B2 (en) | 2018-07-26 | 2022-12-27 | Baoshan Iron & Steel Co., Ltd. | Tension system optimization method for suppressing vibration of cold tandem rolling mill |
| WO2020020192A1 (en) * | 2018-07-26 | 2020-01-30 | 宝山钢铁股份有限公司 | Tension system optimization method for suppressing vibration of cold tandem rolling mill |
| CN109078989A (en) * | 2018-08-07 | 2018-12-25 | 东北大学 | A kind of limit mill speed prediction technique of six-roll cold mill |
| CN109078989B (en) * | 2018-08-07 | 2020-01-07 | 东北大学 | Limit rolling speed prediction method of six-roller cold rolling mill |
| CN111085543A (en) * | 2018-10-23 | 2020-05-01 | 宝山钢铁股份有限公司 | Vibration monitoring and adjusting method for cold continuous rolling mill |
| CN111085543B (en) * | 2018-10-23 | 2021-08-17 | 宝山钢铁股份有限公司 | Vibration monitoring and adjusting method for cold continuous rolling mill |
| CN113226581A (en) * | 2018-12-27 | 2021-08-06 | 杰富意钢铁株式会社 | Method for detecting chatter of cold rolling mill, device for detecting chatter of cold rolling mill, cold rolling method, and cold rolling mill |
| US11779978B2 (en) | 2018-12-27 | 2023-10-10 | Jfe Steel Corporation | Chattering detection method for cold rolling mill, chattering detection device for cold rolling mill, cold rolling method, and cold rolling mill |
| CN113226581B (en) * | 2018-12-27 | 2023-01-17 | 杰富意钢铁株式会社 | Method for detecting chatter of cold rolling mill, device for detecting chatter of cold rolling mill, cold rolling method, and cold rolling mill |
| CN111495980A (en) * | 2019-01-31 | 2020-08-07 | 宝山钢铁股份有限公司 | Method for setting reduction schedule of cold continuous rolling unit with vibration suppression as target |
| CN111495980B (en) * | 2019-01-31 | 2021-12-17 | 宝山钢铁股份有限公司 | Method for setting reduction schedule of cold continuous rolling unit with vibration suppression as target |
| CN113714309B (en) * | 2021-09-18 | 2023-05-02 | 北京首钢自动化信息技术有限公司 | Strip steel jitter eliminating device and eliminating method |
| CN113714309A (en) * | 2021-09-18 | 2021-11-30 | 北京首钢自动化信息技术有限公司 | Strip steel jitter elimination device and elimination method |
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