EP3437748B1 - Réglage de débit massique dans les installations de laminage - Google Patents

Réglage de débit massique dans les installations de laminage Download PDF

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Publication number
EP3437748B1
EP3437748B1 EP18181081.3A EP18181081A EP3437748B1 EP 3437748 B1 EP3437748 B1 EP 3437748B1 EP 18181081 A EP18181081 A EP 18181081A EP 3437748 B1 EP3437748 B1 EP 3437748B1
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EP
European Patent Office
Prior art keywords
thickness
rolling
strip
speed
roll
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18181081.3A
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German (de)
English (en)
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EP3437748A1 (fr
Inventor
Jörn Sieghart
Andreas Gramer
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SMS Group GmbH
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SMS Group GmbH
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Publication date
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Publication of EP3437748A1 publication Critical patent/EP3437748A1/fr
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Publication of EP3437748B1 publication Critical patent/EP3437748B1/fr
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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning 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
    • B21B37/46—Roll speed or drive motor control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B2037/002—Mass flow control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2271/00—Mill stand parameters
    • B21B2271/02—Roll gap, screw-down position, draft position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/04—Roll speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2275/00—Mill drive parameters
    • B21B2275/02—Speed
    • B21B2275/06—Product speed
    • 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

Definitions

  • the invention relates to a method for controlling a rolling mill, preferably a cold rolling mill, which has one or more roll stands, each with two work rolls, which form a roll gap through which a rolling strip can be transported.
  • the invention further relates to a control device and a rolling mill.
  • the thickness control of the rolled strip during transport through the roll gap can be carried out by means of a mass flow control, in which the thickness of the rolling stock is calculated from the measured inlet-side thickness and the measured inlet and outlet-side speeds after passing through the roller gap.
  • a mass flow control in which the thickness of the rolling stock is calculated from the measured inlet-side thickness and the measured inlet and outlet-side speeds after passing through the roller gap.
  • a tandem mill i.e. a rolling mill with several rolling stands arranged one behind the other, it may be difficult to measure the speed at the outlet of the first rolling stand, for example due to the slippage between the rolling stock and the measuring roller unit, emulsion / oil on the material to be measured, steam or lack of space, for example if one Laser is used for measurement.
  • the EP 1 488 863 A2 describes a system and method for controlling the thickness quality in a rolling process.
  • the system includes an online process model that adapts model parameters online in dialog with a subordinate control device of the rolling mill.
  • the method according to the invention is used to control or regulate (used synonymously here) a rolling mill, preferably a cold rolling mill.
  • the rolling mill has one or more roll stands, each with two work rolls which form a roll gap through which a roll belt can be transported.
  • the rolled strip is a strip-shaped metal material, for example made of steel or a non-ferrous metal, which is to be subjected to a one- or multi-stage rolling process by the work rolls.
  • One or both work rolls of the relevant roll stand can be moved relative to one another, so that the roll gap, ie the distance between the work rolls, can be adjusted.
  • a reference speed is first provided, which is a parameter for controlling the rolling mill.
  • the reference speed can be, for example, a target speed at which the rolled strip is to be transported through the rolling train, for example if the rolling train is in a stationary or quasi-stationary state after starting.
  • the reference speed can be a speed parameter with which a roller, preferably a work roller, deflection roller or reel, is controlled in the rolling train.
  • the reference speed can also be another parameter, as long as it is not determined by measuring the run-out speed of the rolled strip from the roll gap.
  • the reference speed can be set in advance, it can be constant or it can be a function of time.
  • the speed and thickness of the rolled strip are measured before it enters the roll gap.
  • the roll gap of the relevant and / or one or more other roll stands in the rolling mill is set on the basis of the measured speed and thickness before entering the roll gap and the reference speed.
  • the control is therefore not carried out taking into account any measured strip speed on the exit side or calculated from actual values of the rolling mill, but using the reference speed, ie a parameter for controlling the rolling mill.
  • the reference speed is used in the exit. This means that the speed measurement or speed calculation of the rolled strip at the outlet of the roll gap can be omitted. Costs that would otherwise be incurred for the provision, installation, maintenance, etc. of corresponding sensors and electronic devices can be saved.
  • the control is less affected by measurement errors, which can occur in particular when measuring the speed at the outlet of the first roll stand, for example due to the slippage between the rolling stock and the measuring roller unit, emulsion / oil on the material to be measured, steam or lack of space, for example if a laser is used for the measurement becomes.
  • the reliability of the thickness control is increased, which in turn has a positive effect on the quality of the rolled product to be manufactured.
  • the control shown enables thickness control with high dynamics and direct reaction in the roll gap.
  • the difference between the actual thickness of the rolled strip at the exit of the rolling mill and the target thickness is preferably corrected by means of a PI control or PID control in order to obtain the desired strip thickness in a reliable manner and with high accuracy.
  • a reference strip thickness is preferably provided, which is a parameter for controlling the rolling mill.
  • the reference strip thickness can be the target thickness that is sought for the rolled strip after passing through the rolling mill, in particular if the rolling mill is in a stationary or quasi-stationary state after starting.
  • the reference strip thickness can be determined in advance, for example, it can be constant or a function of time or a function of the length of the rolling stock.
  • a thickness deviation of the rolled strip is calculated taking into account the reference speed and the reference strip thickness.
  • the calculated thickness deviation is the difference between the inlet-side mass flow thickness, which is calculated using the divisor reference speed, for example, and the reference band thickness.
  • the strip thickness on the outlet side is also measured, a measured thickness deviation is determined therefrom and the measured thickness deviation is compared with the calculated thickness deviation.
  • the reference speed for calculating the thickness deviation of the rolled strip is preferably determined taking into account one or more correction values from a control of the tension, the strip thickness, one or more drive torques and / or the speed control, in order to improve the control accuracy.
  • the additional variable is particularly preferably a lead that can be calculated, accepted or otherwise determined, for example.
  • the advance can be constant or a function of time or a Function of the reference speed.
  • the advance is preferably calculated, the calculation of the advance being at least one non-measured variable and / or at least one measured variable Size includes.
  • the advance is preferably calculated taking into account various system states before and / or during the rolling process, so that the control accuracy and reaction of the roll gap in the thickness control can be guaranteed even without measuring the strip speed on the exit side.
  • the mass flow control of one or more roll stands is operated without measuring and tracking the thickness on the outlet side, i.e. exclusively with the inlet-side thickness and speed measurement.
  • the rolling mill has a number of roll stands, the thickness of the roll strip being measured behind the last roll stand and the reference strip thickness being used to adjust the roll gap of one or more roll stands (in particular to determine the mass flow thickness on one or more roll stands), so that in this respect one Measurement of the strip thickness on the outlet side can be dispensed with.
  • the thickness measurement on the outlet side can also be dispensed with.
  • the thickness control in the last mill stand can regulate the thickness offset in order to achieve the desired target thickness.
  • all dynamic disturbances such as disturbances in the inlet thickness and / or fluctuations in hardness, can be corrected by the first roll stand.
  • a thickness measurement behind the first rolling stand is not absolutely necessary in this variant, a corresponding thickness measuring device can nevertheless be provided in order to provide a possibility of relapse if the inlet-side thickness measurement fails.
  • the device according to the invention for controlling a rolling mill preferably a cold rolling mill, is set up to carry out a method as set out above.
  • the control can be implemented using an electronic circuit.
  • the controller can be in the form of software that, if it is executed on a computing device, which initiates the corresponding calculations and steps for controlling the rolling mill.
  • the control described is particularly well applicable to the operation of cold rolling mills for processing metal strips.
  • the rolling mill can be designed as a reversing system with a change of direction in the strip guide.
  • the invention can also be implemented in other areas insofar as it relates to a rolling process in which a desired thickness of the rolled product is to be set automatically.
  • the Figure 1 schematically shows a tandem mill or rolling mill 1 with four rolling stands 10 arranged one behind the other, preferably for a cold rolling mill.
  • the rolling mill 1 has a decoiler 2 and a decoiler 3.
  • a rolled strip or rolling stock B is fed to the roll stands 10 in the transport direction R, possibly via deflection rollers, and after passing through the roll stands 10, ie after the end of the rolling processing, is wound up by the take-up reel 3.
  • the supply and discharge of the rolled strip B via the two reels 2 and 3 is only an example; the rolled strip B can also be fed to the roll stands 10 in another way and removed for further processing, transport, etc.
  • each roll stand 10 has two support rolls 11 and two work rolls 12. However, it should be pointed out that the method described can be carried out and is suitable for all stand arrangements with two or more rolls per stand.
  • reference numerals 11 and 12 are shown in FIG Figure 1 not shown, but they go out of the Figure 2 in which a roll stand 10 is removed and shown in an enlarged manner.
  • a work roll 12 is in contact with a backup roll 11. Between the two work rolls 12 there is a roll gap through which the rolled strip B is passed. The roll gap can be adjusted by one or both work rolls 12 forming the roll gap being adjustable relative to one another.
  • the work rolls 12 and / or backup rolls 11 are driven, for example, by one or more electric motors (not shown in the figures) in a rotating manner, possibly with the interposition of a gear, a clutch, a brake, etc.
  • the roll stands 10 each have a drive control unit 33.
  • each roll stand 10 is assigned a thickness control device 30, which communicates with a gap control device 31 for setting the gap between the corresponding work rolls 12.
  • a tension control 22 is arranged in front of each roll stand 10 and has an actuator for changing the position of the rolling strip B relative to the roll stand 10. A change in position is used to regulate the tension of the rolled strip B on the inlet side. A change in tension is equivalent to a change in speed of the rolling strip B.
  • the tension controls 22 of the second to fourth rolling stands 10 each have a tension control device 32 for adjusting the setting.
  • control units 30, 31, 32, 33 Possible communication paths between the control units 30, 31, 32, 33 and the associated actuators, actuators, motors, etc. are in the Figure 1 shown schematically. Communication can be physical or wireless. Even if the control units 30, 31, 32, 33 in the Figure 1 are shown separately, these can of course be integrally formed or be part of a central control. In this context, the term “device” does not necessarily denote a mechanical entity, because the control devices 30, 31, 32, 33 can also be implemented with the aid of software that causes the control of the rolling mill 1 when it is executed on a computer.
  • the setting of the roll gap of the respective roll stands 10 takes place via a mass flow control.
  • the starting point is a maintenance variable, the product of the strip speed and the strip thickness shifted into the roll gap, which is referred to as the "mass flow variable" and, for example, analogously to an inlet-side when the rolled strip B passes through the roll stand 10 Thickness disturbance or the change of other process variables such as belt strength, gap friction and / or belt speed changed.
  • v i t * H i t v i - 1 t * H i - 1 t
  • v i (t) denotes the strip speed at the outlet of the roll stand 10 (equal to the strip speed at the entrance of a possibly subsequent roll stand 10) as a function of time.
  • h i (t) denotes the measured strip thickness at the outlet of the roll stand 10 (equal to the roll strip thickness at the entrance to a subsequent roll stand 10) as a function of time.
  • v i-1 (t) denotes the strip speed measured with respect to the roll stand 10 on the entry side as a function of time
  • h i (t) denotes the strip thickness measured with respect to the roll stand 10 on the entry side.
  • the reference strip thickness is a parameter for controlling the rolling mill.
  • the reference strip thickness can be the target thickness that is sought for the rolled strip after passing through the rolling mill, in particular if the rolling mill is in a stationary or quasi-stationary state after starting.
  • the reference strip thickness can be determined in advance, for example, it can be constant or a function of time and / or the strip length.
  • a reference speed at the outlet v iR (t) is used to calculate the mass flow thickness. This is possible because the effects of a change in pitch of the rolled strip B relative to the roll stand 10 can be neglected by the tension control 22.
  • the change in the outlet speed only includes the change in advance caused by the change in position, which is very small in relation to the absolute change, in particular in the speed ranges in which mass flow control is carried out.
  • the reference speed v iR (t) can therefore be a speed parameter with which the rolling mill 1 is controlled.
  • the measurement or calculation of a speed by sending a measured quantity that corresponds to the speed at the outlet of the roll gap can therefore be dispensed with.
  • the reference speed v iR (t) can, for example, be a target speed at which the rolling strip B is to be transported through the rolling train 1, for example when the rolling train 1 is in a stationary or quasi-stationary state after starting.
  • the reference speed v iR (t) can, for example, also be a speed parameter with which a roller, preferably a work roller 12 or a reel, is controlled in the rolling mill 1.
  • the reference speed can be set in advance, it can be constant or it can be a function of time or tape length. However, the reference speed does not have to contain one or more correction values from other control systems. These correction values can consist, for example, of control corrections for the train, the strip thickness and / or the speed control or can be calculated.
  • H iDevCalc t H ITRK - 1 t * v i - 1 t v iR t - H iR
  • h iTrk-1 (t) denotes the strip thickness of the rolled strip B measured on the inlet side (on the i'th roll stand 10).
  • the rolled strip 10 with the strip thickness deviation h iDevCalc (t) thus calculated is then pushed or transported to the exit-side thickness measuring device 20.
  • This calculated strip thickness deviation transported to the thickness measuring device 20 at the outlet is compared with the thickness deviation measured at the outlet.
  • the error is tracked, this also taking place with the reference speed v iR (t) .
  • thickness errors can be tracked and the target surface at the end of rolling mill 1 is reached.
  • the difference between the actual thickness of the rolled strip 10 at the end of the rolling train 1 and the target thickness can be corrected, for example, by means of a PI controller or PID controller, as well as by means of feedback via a filter unit.
  • the thickness measurement on the exit side can also be dispensed with.
  • the thickness control in the last roll stand 10 can regulate the thickness offset in order to arrive at the desired target thickness. All dynamic disturbances, such as disturbances of the inlet thickness and / or fluctuations in hardness, can be according to a variant of these Embodiment can already be corrected by the first roll stand 10. Although a thickness measurement behind the first roll stand 10 is not absolutely necessary in this variant, a corresponding thickness measuring device can nevertheless be provided in order to provide a possibility of relapse if the inlet-side thickness measurement fails.
  • the speed measurement or speed calculation of the rolled strip B at the outlet of one or more roll stands 10 can be omitted. This can save costs that would otherwise be incurred for the provision, installation, maintenance, etc. of corresponding sensors and control units.
  • the control is less affected by measurement errors, which can occur in particular when measuring the speed at the outlet of the first roll stand 10, for example due to the slippage between the rolling stock and the measuring roller unit, emulsion / oil on the material to be measured, steam or lack of space, for example if a laser is used for the measurement is used.
  • the reliability of the thickness control is increased, which in turn has a positive effect on the quality of the rolled product to be manufactured.
  • the approach shown enables thickness control with high dynamics and direct reaction in the roll gap.
  • control or regulation is particularly preferably applicable for cold rolling mills for rolling strip-shaped metal materials, in particular metal strips made of steel or non-ferrous metals, the so-called non-ferrous metals.

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

Claims (13)

  1. Procédé destiné à la commande d'un train de laminage (1), de préférence d'un train de laminage à froid, qui présente une ou plusieurs cages de laminoir (10) qui comprennent respectivement deux cylindres de travail (12) qui forment une emprise à travers laquelle une bande laminée (B) peut être transportée ; dans lequel un cylindre de travail (12) ou les deux peuvent se déplacer d'une manière telle que l'on peut régler l'emprise, et le procédé présente le fait de :
    procurer une vitesse de référence qui représente un paramètre pour l'entraînement du train de laminage (1) ;
    mesurer la vitesse de la bande laminée (B) avant son entrée dans l'emprise ; et
    mesurer l'épaisseur de la bande laminée (B) avant son entrée dans l'emprise ;
    caractérisé en ce que le procédé présente en outre le fait de :
    régler l'emprise d'une ou de plusieurs cages de laminoir (10) dans le train de laminage (1) sur base de la vitesse et de l'épaisseur mesurées avant l'entrée dans l'emprise, et en se basant sur la vitesse de référence, d'une manière telle que la commande a lieu sans prendre en compte une quelconque vitesse de la bande du côté de la sortie, qui a été mesurée ou qui a été calculée à partir de valeurs réelles du train de laminage.
  2. Procédé selon la revendication 1, caractérisé en ce que la vitesse de référence correspond à une vitesse cible à laquelle la bande laminée (B) doit être transportée à travers le train de laminage (1) ou représente un paramètre de vitesse avec lequel on peut commander un cylindre, de préférence un cylindre de travail (12), un galet de renvoi ou une bobine dans le train de laminage (1).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que l'on procure une épaisseur de bande de référence qui représente un paramètre pour la commande du train de laminage (1) et, pour le réglage de l'emprise, on calcule une déviation de l'épaisseur de la bande laminée (B) en prenant en compte la vitesse de référence et l'épaisseur de bande de référence.
  4. Procédé selon la revendication 3, caractérisé en ce que la vitesse de référence est déterminée pour le calcul de la déviation de l'épaisseur de la bande laminée (B) en prenant en compte une ou plusieurs valeurs de correction choisies parmi un réglage de la traction, l'épaisseur de la bande, un ou plusieurs couples d'entraînement et/ou la gestion de la vitesse.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que la vitesse de référence est calculée pour le calcul de la déviation de l'épaisseur de la bande laminée (B) à partir d'une vitesse cible et en prenant en compte une ou plusieurs valeurs supplémentaires, de préférence l'épaisseur cible et/ou la diminution de la rugosité du cylindre et/ou la force de laminage et/ou la traction cible.
  6. Procédé selon la revendication 5, caractérisé en ce que la valeur supplémentaire représente une avance qui est définie comme étant le rapport entre la vitesse linéaire du cylindre de travail (12) et la vitesse de sortie de la bande laminée (B).
  7. Procédé selon la revendication 6, caractérisé en ce que l'on calcule l'avance ; dans lequel on calcule l'avance en prenant en compte différent états de l'installation avant le début du processus de laminage et/ou pendant ce dernier.
  8. Procédé selon l'une quelconque des revendications 3 à 7, caractérisé en ce que l'on mesure l'épaisseur de la bande du côté de la sortie, on détermine à partir de cette dernière une déviation mesurée de l'épaisseur et on compare la déviation mesurée de l'épaisseur à la déviation calculée de l'épaisseur.
  9. Procédé selon l'une quelconque des revendications 3 à 8, caractérisé en ce que l'épaisseur de bande de référence représente une épaisseur cible que l'on recherche pour la bande laminée (B) après le passage de cette dernière par le train de laminage (1).
  10. Procédé selon l'une quelconque des revendications 3 à 9, caractérisé en ce que le train de laminage (1) présente plusieurs cages de laminoir (10) ; dans lequel on mesure l'épaisseur de la bande laminée (B) derrière la dernière cage de laminoir (10) et on utilise l'épaisseur de bande de référence pour le réglage de l'emprise d'une ou de plusieurs cages de laminoir (10), d'une manière telle que l'on renonce à cet égard à une mesure de l'épaisseur de la bande du côté de la sortie.
  11. Dispositif pour la commande d'un train de laminage (1), de préférence d'un train de laminage à froid qui est conçu pour la mise en oeuvre d'un procédé selon l'une quelconque des revendications 1 à 10.
  12. Train de laminage (1), de préférence train de laminage à froid qui présente un dispositif selon la revendication 11, ainsi qu'une plusieurs cages de laminoir (10) qui comprennent respectivement deux cylindres de travail qui forment une emprise à travers laquelle une bande laminée (B) peut être transportée ; dans lequel un cylindre de travail (12) ou les deux peuvent se déplacer l'un par rapport à l'autre d'une manière telle que l'on peut régler l'emprise.
  13. Train de laminage selon la revendication 12, caractérisé en ce que ce dernier est du type d'une installation réversible avec un changement de direction en ce qui concerne le guidage de la bande.
EP18181081.3A 2017-08-01 2018-07-02 Réglage de débit massique dans les installations de laminage Active EP3437748B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15/665,806 US10799924B2 (en) 2017-08-01 2017-08-01 Mass flow regulation in roller devices

Publications (2)

Publication Number Publication Date
EP3437748A1 EP3437748A1 (fr) 2019-02-06
EP3437748B1 true EP3437748B1 (fr) 2020-02-12

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CN111069300B (zh) * 2019-12-30 2021-07-09 新疆八一钢铁股份有限公司 一种冷轧特厚高精度电机壳钢生产方法
US11845118B2 (en) * 2020-09-04 2023-12-19 Toshiba Mitsubishi-Electric Industrial Systems Corporation Control system of tandem cold rolling mill
DE102022202987A1 (de) * 2022-03-25 2023-09-28 Sms Group Gmbh Betriebsverfahren für eine Walzstraße

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US3787667A (en) * 1971-01-06 1974-01-22 Gen Electric Computer controlled metal rolling mill
DE3371749D1 (en) * 1982-11-11 1987-07-02 Davy Mckee Sheffield Rolling mill control for tandem rolling
JPS6149772A (ja) * 1984-08-13 1986-03-11 Tamura Seisakusho Co Ltd フラツクス面制御装置
JPS6149722A (ja) * 1984-08-20 1986-03-11 Nippon Kokan Kk <Nkk> 鋼ストリツプの板厚制御方法
JPH0446622A (ja) 1990-06-14 1992-02-17 Toshiba Corp 圧延機の板厚制御装置
JPH05169126A (ja) * 1991-12-26 1993-07-09 Siemens Ag コールドストリップ圧延設備のための制御方法
DE10254178B4 (de) * 2002-11-21 2011-10-13 Abb Ag Verfahren zur Ermittlung von Zustandsgrößen eines Walzprozesses
DE10327663A1 (de) 2003-06-20 2005-01-05 Abb Patent Gmbh System und Verfahren zur optimierenden Regelung der Dickenqualität in einem Walzprozess
DE102009012028A1 (de) 2009-03-10 2010-09-23 Converteam Gmbh Verfahren zum Betreiben einer Walzstraße insbesondere eines Kaltwalzwerkes
EP2298461A1 (fr) 2009-09-17 2011-03-23 Siemens Aktiengesellschaft Train de laminoir à froid doté d'une régulation du débit massique sur une cage de laminoir
EP2620233A1 (fr) * 2012-01-24 2013-07-31 Siemens Aktiengesellschaft Procédé de traitement de produits laminés dans un laminoir

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US20190039107A1 (en) 2019-02-07
US10799924B2 (en) 2020-10-13
EP3437748A1 (fr) 2019-02-06

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