EP1344582B1 - Niederdrückpositionseinstellverfahren zum walzen einer platte - Google Patents

Niederdrückpositionseinstellverfahren zum walzen einer platte Download PDF

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Publication number
EP1344582B1
EP1344582B1 EP01983817A EP01983817A EP1344582B1 EP 1344582 B1 EP1344582 B1 EP 1344582B1 EP 01983817 A EP01983817 A EP 01983817A EP 01983817 A EP01983817 A EP 01983817A EP 1344582 B1 EP1344582 B1 EP 1344582B1
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Prior art keywords
rolling
thrust
time
pred
screw
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EP01983817A
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English (en)
French (fr)
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EP1344582A4 (de
EP1344582A1 (de
Inventor
Kenji Nippon Steel Corporation Yamada
Shigeru Nippon Steel Corporation Ogawa
Atsushi Nippon Steel Corporation Ishii
Akihiro NIPPON STEEL CORP. NAGOYA WORKS IKEDA
Koichi NIPPON STEEL CORP. NAGOYA WORKS YAMAZAKI
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Nippon Steel Corp
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Nippon Steel Corp
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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
    • B21B37/68—Camber or steering control for strip, sheets or plates, e.g. preventing meandering
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B2038/002—Measuring axial forces of rolls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2269/00—Roll bending or shifting
    • B21B2269/12—Axial shifting the rolls
    • B21B2269/14—Work rolls
    • 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

Definitions

  • the present invention relates to a method of setting the screw-down position for suppressing a change in plate thickness and change in thickness wedge of the leading end of a rolled material and improving the dimensional accuracy and rollability of a rolled material.
  • roller load difference When thrust forces are generated in this way, excess moments act on the rolls and the widthwise distribution of the contact pressure between the rolls and the difference in rolling loads at the work side and drive side of the rolling stand (hereinafter called the “left” and “right”) (hereinafter called “rolling load difference”) changes. Due to the change in deformation, the so-called mill stretch, of the rolling stand, a change occurs in the plate thickness and/or the thickness wedge (left/right thickness difference) after rolling and becomes a cause of not only defects in dimensional accuracy, but also passage trouble arising due to the occurrence of snake and camber.
  • the methods of adjustment of the screw-down positions considering these thrust forces may be roughly divided into the method of adjusting the screw-down positions in accordance with the estimated values (and changes in the same) of thrust forces estimated based on detected values of thrust counterforces arising at the mechanisms supporting the thrust forces, for example, the keeper plates of the work roll chocks, or detected values of the rolling load etc. obtained from other counterforce detecting means (hereinafter called “screw-down position control technology considering the thrust forces which are measured”) and the method of setting the screw-down positions in advance based on the thrust forces predicted before the start of rolling (hereinafter called “screw-down position setting technology considering the thrust forces which are predicted”).
  • GB-A-2278464 discloses a reverse rolling control system of a pair cross rolling mill having the function of crossing upper and lower rolls as pairs.
  • the present invention has as its object to solve the various problems seen in the prior art explained above and provide a method of setting screw-down positions accurately considering changes in mill stretch after threading of the leading end of a rolled sheet due to the thrust forces and the changes in plate thickness and thickness wedge due to the same and reflecting the same in the screw-down setting positions so as to improve the dimensional accuracy of the product and eliminate passage trouble occurring due to the occurrence of snake and camber.
  • the present invention was made in order to achieve the above object and regards:
  • the present inventors engaged in detailed investigations, analysis, and studies and as a result discovered that even when adjusting to certain thrust forces (thrust forces between rolled sheet and work rolls and/or between work rolls and backup rolls) (for example, strictly adjusting the skew angles between the top and bottom work rolls and/or the fine skew angles between the work rolls and backup rolls), as shown by way of an example in FIG. 2 , the measured values of the thrust counterforces directly after threading of the leading end of the rolled sheet (in the figure, measured by load detectors attached to the thrust bearings of the work rolls) and the left/right rolling load difference (in the figure, displayed by smoothing the fluctuation along with the impact force at the time of threading etc.) remarkably changed and stabilized after the elapse of a certain time. Further, they confirmed that the plate thickness and thickness wedge of the leading end part of the rolled sheet after rolling changes mimicking the change in the measured values.
  • certain thrust forces thrust forces between rolled sheet and work rolls and/or between work rolls and backup rolls
  • This phenomenon is understood as being due to the fact that, in general, there is a significant clearance in the roll axis direction (hereinafter called “thrust direction clearance”), or elastic (contact) deformation of that location for example between the work roll chocks and the keeper plates (in the case of a rolling stand having axial direction shift devices of work rolls, chock support parts of the shift devices), so the roll chocks start to move from the positions of idle operation (where thrust forces are zero or small) before rolling in the direction of action of the thrust forces (or the combined force of the thrust forces between the rolled sheet and work rolls and the thrust forces between the work rolls and backup rolls in the case of for example a four-high rolling stand) after the start of rolling, the thrust counterforces start to increase from the time of contact with the keeper plates, the axial direction movements of the rolls stop at the time when reaching thrust counterforces sufficient for supporting the axial direction movements of the roll chocks due to that thrust forces (or combined force), and the thrust counterforces stabilize.
  • the left/right rolling load difference also fluctuates. That is, the changes in the thrust counterforces or the left/right rolling load difference after the start of rolling and the fluctuations in the plate thickness and thickness wedge of the leading end of the rolled sheet due to the same inherently occur so long as there is thrust direction clearance or elastic deformation of the axial direction supports of the roll chocks.
  • the inventors concluded that setting the screw-down positions considering in advance changes after the start of rolling, that is, individually setting the screw-down positions at the two times of the time of start of rolling and the time when the thrust counterforces stabilize for establishing the most suitable screw-down positions for those times, is essential.
  • the present invention was made based on the above discovery.
  • FIG. 3 is a schematic view of an embodiment of a flat rolling stand covered by the method of the present invention explained with reference to the example of a four-high rolling stand.
  • the rolled sheet 3 is rolled between top and bottom work rolls 4a, 4b supported by top and bottom backup rolls 5a, 5b.
  • the top and bottom backup rolls 5a, 5b are supported at their two ends by backup roll chocks 7a, 7b, 7c, and 7d.
  • the top and bottom work rolls 4a, 4b are supported at their two ends by the work roll chocks 6a, 6b, 6c, and 6d and are adjusted in position in the roll axis direction by the top and bottom roll shift mechanisms 10a, 10b.
  • FIG. 4 is a schematic view of the forces (including counterforces and loads, where a force in the arrow direction in the figure is defined as "positive") and dimensions used in the following explanation.
  • the physical quantities represented by the symbols are as follows:
  • FIG. 1 is a schematic view of an embodiment of the method shown in item (1) of the present invention.
  • the thrust forces between the rolled sheet and the work rolls and/or the thrust forces between the work rolls and backup rolls occurring during rolling are predicted.
  • T WM between the rolled sheet and the work rolls for example, it is sufficient to use the prior art disclosed in Japanese Unexamined Patent Publication (Kokai) No. 6-154832 .
  • T WB between the work rolls and the backup rolls for example, it is sufficient to use the prior art disclosed in Japanese Unexamined Patent Publication (Kokai) No.
  • T WB pred F 1 T WB idnt ⁇ P t meas ⁇ P c pred ⁇ R old ⁇ R new ⁇ D ⁇ K
  • T WB pred Predicted value of thrust forces between work rolls and backup rolls
  • T WB idnt Identified value of thrust forces between work rolls and backup rolls in previous pass or while rolling previous material
  • P meas t Measured value of rolling load (left/right total force) of previous pass or while rolling previous rolled material
  • P t prod Predicted value of rolling load (left/right total force) of rolling pass using method of present invention, R old ; Rolling conditions of previous pass or previous rolled material (for example, plate thickness, plate width, rolling reduction, etc.), R nev
  • the screw-down setting positions S 1 screw-down setting position, that is, left/right mean value component of screw-down setting position
  • S df 1 screw-down setting position, that is, left/right difference component of screw-down setting position
  • the screw-down setting positions of the two points of time may be calculated for example using the following formula ⁇ 2> to formula ⁇ 5>:
  • S 1 F 2 T WM pred ⁇ T WB pred ⁇ P t pred ⁇ h aim ⁇ R new ⁇ D ⁇ K
  • S df 1 F 3 T WM pred ⁇ T WB pred ⁇ P t pred ⁇ p df pred ⁇ h df aim ⁇ R new ⁇ D ⁇ K
  • S 2 F 4 T WM pred ⁇ T WB pred ⁇ P t pred ⁇ h aim ⁇ R new ⁇ D ⁇ K
  • S df 2 F 5 T WM pred ⁇ T WB pred ⁇ P t pred ⁇ p df pred ⁇ h df aim ⁇ R new ⁇ D ⁇ K
  • P df pred Left/right difference in contact pressure between rolled sheet and work rolls predicted in rolling pass using method of present invention
  • the predicted value p df pred of the left/right difference of the contact pressure between the rolled sheet and work rolls may for example be calculated based on the left/right temperature difference of the rolled sheet, the thickness wedge before rolling, etc.
  • the screw-down setting positions S 1 and S df 1 at the time of the start of rolling calculated and stored using the screw-down position setting calculator 1 according to the above formula ⁇ 2> and formula ⁇ 3> are sent to the screw-down apparatuses 2a, 2b, the screw-down positions are adjusted before the start of rolling to give the setting positions, and then the rolling is started.
  • the thrust counterforces start to change and change until a stable state.
  • the screw-down position setting calculator 1 sends the screw-down setting positions S 2 and S df 2 at the time the thrust counterforces stabilize, calculated and stored in accordance with the above formula ⁇ 4> and formula ⁇ 5>, to the screw-down apparatuses 2a and 2b. then the corrects the screw-down positions to the setting positions.
  • the counterforces at the time when the thrust counterforces are stable are generally not zero, so the predicted values of the two thrust forces of the thrust forces T WM between the rolled sheet and work rolls and the thrust forces T WB between the work rolls and backup rolls become necessary for calculation of the screw-down setting positions at that point of time.
  • the AS(P), ⁇ S W (P), and ⁇ S D (P) in the above formula can be determined for example from the results of measurement of the squeeze-down load under the kiss roll conditions, the rolling conditions, the dimensional parameters of the rolling stand, etc. Further, P df pred-1 is the predicted value of the left/right rolling load difference at the time of start of rolling, while P df pred-2 is the predicted value of the left/right rolling load difference at the time when the thrust counterforces stabilize.
  • the stability of thrust counterforces may be judged using the time when a certain time determined in advance elapses from the start of rolling. At this time, to avoid the effect of the impact force accompanying threading of the leading end of the rolled sheet or the effect of the response times of the screw-down apparatuses 2a, 2b, this is made the time when at least 0.2 second elapses from the start of rolling. In the case of an ordinary flat rolling stand, if less than 0.2 second, there is a good chance of the rolling load or thrust counterforces remarkably fluctuating due to the effect of the impact force or the response times of the screw-down apparatuses.
  • the screw-down position settings greatly fluctuate and the risk of passage trouble increases, so setting the time to at least 0.2 second is a requirement.
  • the time until the thrust counterforces stabilize is expected to be substantially proportional to the relative (rolling) slip distance in the roll axial direction between the rolled sheet and work rolls after the start of rolling.
  • the rolling stand used has a means for detecting thrust counterforces
  • the rolling stand used has a means for detecting thrust counterforces
  • it has thrust counterforce detectors 8a, 8b between the work rolls 4a, 4b and the roll shift mechanisms 10a, 10b such as with the rolling stand schematically shown in the above FIG. 3
  • d(P df (t))/dt Rate of change over time of left/right rolling load difference at present time
  • d(T w (t))/dt Rate of change over time of thrust counterforces at present time.
  • the above thrust counterforce detectors 8a, 8b To keep down the effects of the impact force accompanying threading of the leading end of the rolled sheet on the detected values of the rolling loads, it is preferable to use the above thrust counterforce detectors 8a, 8b.
  • the rate of change over time of the measured values of the thrust counterforces and the left/right rolling load difference from the time of start of rolling are believed to be dependent on the rate of change over time of the relative slip distance in the roll axial direction between the rolled sheet and the work rolls, that is, the relative slip speed.
  • the roll rotational speed changes after the start of rolling, it is possible to use the rate of change over time of the measured value of the thrust counterforces or the rolling load difference divided by the roll rotational speed.
  • the thrust counterforce detectors and/or rolling load detectors are arranged at both of the top side and bottom side and the stability of a thrust counterforces T w is judged based on the two detected values (for example, it is judged that the thrust counterforces T w have stabilized at the time when both of the top and bottom detected values satisfies the above condition), but it is also possible to arrange detectors and detect values at one of either the top and bottom.
  • thrust counterforce detectors and rolling load detectors at the top and/or bottom or to arrange different detectors at the top and bottom (for example, the rolling load detectors at the bottom and the thrust counterforce detectors at the top).
  • thrust counterforce detectors at part or all of the group of intermediate rolls positioned between the work rolls and backup rolls.
  • the thrust counterforce detecting means just need to be sufficient for judging the rate of change of the detected values. There is no need to use detectors superior in accuracy of the absolute values and resolution such as so-called load cells.
  • the present invention may be used only for calculation of the left/right differences S 1 df , S df 2 of the screw-down setting positions (calculation using the above formula ⁇ 3> to formula ⁇ 3-III> and formula ⁇ 5> to formula ⁇ 5-III>) and adjustment of the screw-down positions.
  • the method of the present invention by suppressing the change in plate thickness and the change in thickness wedge of the leading end of the rolled sheet during flat rolling, it is possible to strikingly improve the dimensional accuracy of the rolled sheet and improve the rollability as much as possible.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Claims (12)

  1. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen mit Hilfe eines Mehrwalzengerüsts mit mindestens vier Walzen, wobei das Verfahren aufweist:
    a) vor Walzbeginn erfolgendes Vorhersagen von beim Walzen auftretenden Schubkräften (TWM, TWB)
    a1) zwischen einem gewalzten Blech und Arbeitswalzen und/oder
    a2) mindestens an einer Stelle an einer Kontaktfläche zwischen Walzen,
    b) Einstellen der Anstellpositionen (S1, Sdf 1) zu Walzbeginn, wobei die Positionen auf dem Vorhersagewert der Schubkräfte (TWM pred, TWB pred) zu dieser Zeit beruhen,
    c) Neueinstellen der Anstellpositionen (S2, Sdf 2) zu der Zeit, zu der sich Schubgegenkräfte (TW, TB) , die an den Auflagern der Schubkräfte (TWM, TWB) auftreten, stabilisieren, wobei die Positionen (S2, Sdf 2) - auf dem Vorhersagewert der Schubkräfte (TWM pred, TWB pred) zu dieser Zeit beruhen.
  2. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach Anspruch 1, gekennzeichnet durch Einstellen der Anstellpositionen (S1, Sdf 1) zu Walzbeginn auf der Grundlage des Vorhersagewerts der Schubkräfte (TWM pred) zwischen dem gewalzten Blech und Arbeitswalzen und durch Neueinstellen von Anstellpositionen (S2, Sdf 2) zu der Zeit, zu der sich die Schubgegenkräfte (TW, TB) stabilisieren, auf der Grundlage des Vorhersagewerts der Schubkräfte (TWM pred) zwischen dem gewalzten Blech und Arbeitswalzen sowie der Schubkräfte (TWB pred) an der Kontaktfläche zwischen Walzen an mindestens einer Stelle.
  3. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach Anspruch 1, gekennzeichnet durch Einstellen der Anstellpositionen (S1, Sdf 1) zu Walzbeginn auf der Grundlage von Vorhersagewerten der Schubkräfte (TWM pred, TWB pred) und Neueinstellen der Anstellpositionen (S2, Sdf 2) nach der Zeit, zu der sich die Schubgegenkräfte (TW, TB), die an den Auflagern der Schubkräfte auftreten, stabilisieren, auf der Grundlage des Vorhersagewerts der Schubkräfte (TWM pred, TWB pred), des Meßwertes der Schubgegenkräfte (TW, TB) und/oder des Meßwerts der linken und rechten Walzlast beim Walzen.
  4. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach einem der Ansprüche 1 bis 3, gekennzeichnet durch Festlegen der Zeit, zu der sich die Schubgegenkräfte (TW, TB) stabilisieren, als Zeit, zu der eine gewisse vorbestimmte Zeit ab Walzbeginn abläuft.
  5. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach Anspruch 4, gekennzeichnet durch Festlegen der Zeit, zu der eine gewisse vorbestimmte Zeit ab Walzbeginn abläuft, als Zeit, zu der mindestens 0,2 Sekunden ab Walzbeginn ablaufen.
  6. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach Anspruch 4 oder Anspruch 5, gekennzeichnet durch Bestimmen der gewissen vorbestimmten Zeit auf der Grundlage des Schrägungswinkels zwischen den oberen und unteren Arbeitswalzen und des Drehabstands der Oberfläche der Arbeitswalze nach Einzug des gewalzten Blechs.
  7. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach einem der Ansprüche 4 bis 6, gekennzeichnet durch Bestimmen der gewissen vorbestimmten Zeit auf der Grundlage von Walzergebnissen bis zum vorherigen Walzgut oder vorherigen Walzstich.
  8. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach einem der Ansprüche 1 bis 3, gekennzeichnet durch Überwachen der Stabilität detektierter Schubgegenkraftwerte, die mittels einer Einrichtung zum Detektieren von Schubgegenkraftwerten in einem Walzgerüst mit einer Schubgegenkraft-Detektionseinrichtung nach Walzbeginn detektiert werden, und Festlegen der Zeit, zu der beurteilt wird, daß sich die detektierten Schubgegenkraftwerte stabilisiert haben, als Zeit, zu der sich die Schubgegenkräfte (TW, TB) stabilisieren.
  9. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach einem der Ansprüche 1 bis 3, gekennzeichnet durch Überwachen der Stabilität einer oberen und/oder unteren Links/Rechts-Walzlastdifferenz, die anhand des Detektionswerts einer Walzlast-Detektionseinrichtung nach Walzbeginn in einem Walzgerüst mit einer unabhängigen Links/Rechts-Walzlast-Detektionseinrichtung oben und/oder unten verarbeitet wird, und Festlegen der Zeit, zu der beurteilt wird, daß sich die Walzlastdifferenz stabilisiert hat, als Zeit, zu der sich die Schubgegenkräfte (TW, TB) stabilisieren.
  10. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach einem der Ansprüche 1 bis 3, gekennzeichnet durch Überwachen der Stabilität detektierter Schubgegenkraftwerte, die mittels einer Einrichtung zum Detektieren von Schubgegenkräften (TW, TB) nach Walzbeginn detektiert werden, sowie der Stabilität einer Links/Rechts-Walzlastdifferenz, die anhand des Detektionswerts einer Walzlast-Detektionseinrichtung nach Walzbeginn in einem Walzgerüst mit einer Schubgegenkraft-Detektionseinrichtung und einer unabhängigen Links/ Rechts-Walzlast-Detektionseinrichtung verarbeitet werden, und Festlegen der Zeit, zu der beurteilt wird, daß sich die detektierten Schubgegenkraftwerte und die Walzlastdifferenz stabilisiert haben, als Zeit, zu der sich die Schubgegenkräfte (TW, TB) stabilisieren.
  11. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach Anspruch 8 oder Anspruch 10, gekennzeichnet durch Bewerten der Stabilität der detektierten Schubgegenkraftwerte durch die zeitliche Änderungsgeschwindigkeit der detektierten Schubgegenkraftwerte oder die zeitliche Änderungsgeschwindigkeit dividiert durch die Drehzahl der Arbeitswalzen und Festlegen des Zeitpunkts, zu dem die zeitliche Änderungsgeschwindigkeit oder die zeitliche Änderungsgeschwindigkeit dividiert durch die Drehzahl der Arbeitswalzen nicht größer als ein vorbestimmter Zahlenwert wird, als Zeit, zu der beurteilt wird, daß sich die detektierten Schubgegenkraftwerte stabilisieren.
  12. Verfahren zum Einstellen von Anstellpositionen (S, Sdf) beim Flachwalzen nach Anspruch 9 oder Anspruch 10, gekennzeichnet durch Bewerten der Stabilität der Links/ Rechts-Walzlastdifferenz durch die zeitliche Änderungsgeschwindigkeit der Walzlastdifferenz oder die zeitliche Änderungsgeschwindigkeit dividiert durch die Drehzahl der Arbeitswalzen und Festlegen der Zeit, zu der die zeitliche Änderungsgeschwindigkeit oder die zeitliche Änderungsgeschwindigkeit dividiert durch die Drehzahl der Arbeitswalzen nicht größer als ein vorbestimmter Zahlenwert wird, als Zeit, zu der beurteilt wird, daß sich die Walzlastdifferenz stabilisiert.
EP01983817A 2000-11-17 2001-11-16 Niederdrückpositionseinstellverfahren zum walzen einer platte Expired - Lifetime EP1344582B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP2000350828 2000-11-17
JP2000350828 2000-11-17
JP2001321819A JP3863751B2 (ja) 2000-11-17 2001-10-19 板圧延における圧下位置設定方法
JP2001321819 2001-10-19
PCT/JP2001/010064 WO2002040188A1 (fr) 2000-11-17 2001-11-16 Procede de reglage de position d'action pour laminage de tole

Publications (3)

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EP1344582A1 EP1344582A1 (de) 2003-09-17
EP1344582A4 EP1344582A4 (de) 2006-04-12
EP1344582B1 true EP1344582B1 (de) 2008-09-10

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EP (1) EP1344582B1 (de)
JP (1) JP3863751B2 (de)
KR (1) KR100534499B1 (de)
CN (1) CN1229191C (de)
AU (1) AU2002215224A1 (de)
DE (1) DE60135777D1 (de)
WO (1) WO2002040188A1 (de)

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CN102397885B (zh) * 2010-09-18 2013-09-04 中冶东方工程技术有限公司秦皇岛研究设计院 一种脉冲轧制方法
EP2910316A1 (de) 2014-02-21 2015-08-26 Primetals Technologies Germany GmbH Einfache Vorsteuerung einer Keilanstellung eines Vorgerüsts
EP3838433B1 (de) * 2018-08-13 2023-05-03 Nippon Steel Corporation Verfahren zur identifizierung des angriffspunkts der schubreaktionskraft und walzverfahren für gewalztes material
JP7127446B2 (ja) * 2018-09-12 2022-08-30 日本製鉄株式会社 圧延機の設定方法
EP3957410A4 (de) * 2019-04-19 2023-05-24 Nippon Steel Corporation Verfahren zur steuerung der mäanderung von zu walzendem material
CN114570766A (zh) * 2022-03-15 2022-06-03 山西云时代太钢信息自动化技术有限公司 一种精轧机实时压下调节装置及控制方法

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WO2002040188A1 (fr) 2002-05-23
AU2002215224A1 (en) 2002-05-27
DE60135777D1 (de) 2008-10-23
KR20040014413A (ko) 2004-02-14
CN1494465A (zh) 2004-05-05
JP2002210512A (ja) 2002-07-30
CN1229191C (zh) 2005-11-30
KR100534499B1 (ko) 2005-12-08
EP1344582A4 (de) 2006-04-12
EP1344582A1 (de) 2003-09-17
JP3863751B2 (ja) 2006-12-27

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