EP3715000B1 - Procédé permettant d'éviter les ondulations lors du laminage des bandes métalliques - Google Patents

Procédé permettant d'éviter les ondulations lors du laminage des bandes métalliques Download PDF

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Publication number
EP3715000B1
EP3715000B1 EP19165536.4A EP19165536A EP3715000B1 EP 3715000 B1 EP3715000 B1 EP 3715000B1 EP 19165536 A EP19165536 A EP 19165536A EP 3715000 B1 EP3715000 B1 EP 3715000B1
Authority
EP
European Patent Office
Prior art keywords
metal strip
control device
strip
roll stand
stand
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
EP19165536.4A
Other languages
German (de)
English (en)
Other versions
EP3715000A1 (fr
Inventor
Klaus Loehe
Andreas Maierhofer
Martin Kerschensteiner
Daniel Kotzian
Matthias Kurz
Mirko TUNK
Daniel Ott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Primetals Technologies Austria GmbH
Primetals Technologies Germany GmbH
Original Assignee
Primetals Technologies Austria GmbH
Primetals Technologies Germany GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Primetals Technologies Austria GmbH, Primetals Technologies Germany GmbH filed Critical Primetals Technologies Austria GmbH
Priority to EP19165536.4A priority Critical patent/EP3715000B1/fr
Priority to JP2021557146A priority patent/JP7277604B2/ja
Priority to US17/598,343 priority patent/US11858021B2/en
Priority to PCT/EP2020/055886 priority patent/WO2020193099A1/fr
Priority to CN202080025270.1A priority patent/CN113646102B/zh
Publication of EP3715000A1 publication Critical patent/EP3715000A1/fr
Application granted granted Critical
Publication of EP3715000B1 publication Critical patent/EP3715000B1/fr
Active legal-status Critical Current
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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
    • B21B37/68—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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • B21B37/30—Control of flatness or profile during rolling of strip, sheets or plates using roll camber 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
    • B21B37/58—Roll-force control; Roll-gap control
    • 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
    • B21B38/02—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring flatness or profile of strips
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/04—Flatness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/04—Flatness
    • B21B2263/06—Edge waves
    • 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
    • B21B2271/025—Tapered roll gap

Definitions

  • the present invention is also based on a control program, the control program including machine code that can be processed by a control device for a roll stand, the processing of the machine code by the control device causing the control device to execute such a control method.
  • the present invention is also based on a control device for a roll stand, the control device being programmed with such a control program so that the control device executes such a control method during operation.
  • the present invention is also based on a rolling unit, the rolling unit having a rolling stand in which a metal strip is rolled, the rolling unit having such a control device, the rolling stand being controlled by the control device.
  • the present invention is also based on a rolling train, the rolling train having a plurality of rolling stands, the rolling stands being arranged one behind the other, viewed in a rolling direction, so that the same section of the metal strip runs through them one after the other, with at least one of the rolling stands being designed as such a rolling unit is.
  • lateral position of the metal strip When rolling a metal strip in a roll stand, the lateral position of the metal strip is an important process variable.
  • the lateral position of the metal strip is important when rolling the head of the metal strip, so that the metal strip enters a downstream device, for example the downstream rolling stand or a coil box, as centrally as possible. Deviations in the lateral position from a target position can lead to disruptions, and in extreme cases to an upward movement.
  • a wave can also form in the rolled metal strip. In some cases this happens despite an attempt to bring the lateral position of the metal strip closer to the desired position, in other cases precisely because of the attempt to bring the lateral position of the metal strip closer to the desired position.
  • the wave can occur in the area of the edge of the metal strip facing the drive side of the roll stand or in the area of the edge of the metal strip facing the operating side of the roll stand. Waves of this type make it difficult at least to feed the metal strip to the downstream device, for example threading the metal strip into a downstream stand.
  • the waves can lead to a so-called strip doubler (i.e.
  • the cause of the waves in the rolled metal strip can be, in particular, an asymmetrical adjustment of the roll stand that is unsuitable for the specific rolled metal strip.
  • measurable and known variables are, for example, the strip thickness, the strip width, the temperature, the roll grind, the roll adjustment and others.
  • the non-measurable and also not otherwise known variables are, for example, a thickness wedge present in the still unrolled metal strip or a temperature wedge present in the still unrolled metal strip and also a deviation of an actual setting of the roll stand from a target setting - related to this roll stand.
  • the object of the present invention is to provide options for avoiding waves in the rolled metal strip as far as possible.
  • control method with the features of claim 1.
  • Advantageous configurations of the control method are the subject matter of dependent claims 2 to 11.
  • control device varies the parameter in such a way that the formation of the wave is counteracted or an extent to which the wave forms is limited to a predetermined extent.
  • the parameter can be determined as needed.
  • the parameter can be a maximum value or a minimum value for the pan value.
  • the limit value there if such a limit value exists) is retained unchanged.
  • the parameter in such a way that it does not yet have any influence on the swing value currently output by the tower controller. This can be useful in particular when the sensitivity in detecting a wave is very high, so that even a very small wave can be detected. In this case, it may be sufficient to set the limit value to a value slightly above or below the current value, depending on the panning direction. As a rule, however, the control device will define the limit value in such a way that the scaffold controller has to reduce the amount of the current pivoting value due to the variation of the parameter.
  • control device maintains the varied parameter until either the control device varies the parameter again due to renewed formation of a wave in the metal strip, or the tension state of the metal strip changes, or the metal strip is fully rolled in the roll stand.
  • the tension state determines whether the metal strip is rolled under tension or without tension.
  • an outlet-side detection of the strip position and evaluation of a wave is the the area adjacent to the strip head is rolled without tension until the strip head enters a subsequent device, for example is threaded into the subsequent rolling stand.
  • the area adjacent to the strip foot is rolled without tension from the moment when the strip foot has run out of a preceding device, for example is unthreaded from the preceding rolling stand.
  • the remaining area of the metal strip can be rolled under tension (this is the norm) or without tension, as required.
  • the control device preferably feeds the varied parameter to a database with assignment to data characteristic of the rolled metal strip, so that the varied parameter is available as an initial value for the parameter when rolling another metal strip with the same or sufficiently similar characteristic data.
  • the parameters of the stand controller can be set from the outset in such a way that a wave is avoided or the extent of a wave is limited to a predetermined level. In particular, this prevents a wave from occurring again during the rolling of a subsequent similar or at least comparable metal strip.
  • the control device can receive, in particular, groups of images of the metal strip as measurement data for the lateral position of the metal strip, which show the metal strip as it leaves the roll stand and/or as it enters the roll stand, with the images of the groups each being based on a uniform image for the respective group Date of acquisition are related.
  • the capturing of such images by cameras and similar optical capturing devices is generally known, as already explained above.
  • the groups in individual cases only include a single image. Even in this case, a very reliable evaluation is possible. Furthermore, it is possible that the groups of images are determined in such a way that they enable a three-dimensional determination of the surface of the metal strip. This further improves the evaluation.
  • the groups of images can include at least one depth image.
  • depth image has a fixed meaning. It is a two-dimensional image, with each pixel also being assigned distance information in addition to its arrangement of the associated object determined by the arrangement of the pixel in the image, so that the associated object is unambiguously localized in three-dimensional space.
  • the groups of images can comprise a plurality of two-dimensional images. In this case, a stereoscopic image, ie a three-dimensional image, can be generated using the multiple images of the respective group.
  • control device uses the groups of images of the metal strip to determine the at least one variable from which it can be seen for both strip edges of the metal strip whether the metal strip forms a wave in the region of the respective strip edge.
  • An algorithm for determining the waves in the images does not have to be created explicitly as such. Rather, it is possible to use so-called machine learning algorithms during a learning phase. For example, neural networks can be trained accordingly.
  • machine learning algorithms For example, neural networks can be trained accordingly.
  • other procedures are also possible without further ado.
  • control device makes a simple binary decision as to whether a wave forms at one band edge or at the other band edge.
  • This variant is relatively easy to implement.
  • control device can determine the quantified values, for example, in the form of I-units (also known in German as the flatness index). I-units are known and familiar to those skilled in the art.
  • the control method according to the invention is carried out in particular during a period of time during which the metal strip is in a stress-free state in front of and/or behind the roll stand--ie that roll stand on which the stand controller acts.
  • control program with the features of claim 12.
  • processing of the machine code by the control device causes the control device to execute a control method according to the invention.
  • control device having the features of claim 13.
  • the control device is programmed with a control program according to the invention, so that the control device executes a control method according to the invention during operation.
  • the rolling unit has a control device according to the invention as a control device.
  • At least one of the rolling stands is designed as a rolling unit according to the invention.
  • a rolling train has several roll stands 1 . From the roll stands 1 are in FIG 1 only the work rolls shown. As a rule, however, the roll stands 1 additionally have at least back-up rolls, and in some cases also additional rolls beyond the back-up rolls. For example, intermediate rolls can be arranged between the work rolls and the back-up rolls.
  • a metal strip 2 is rolled in the rolling train.
  • the roll stands 1 are controlled by a respective stand controller 3a.
  • the stand controllers 3a are part of a respective control device 3b for the respective roll stand 1.
  • the control devices 3b can be coordinated by a higher-level coordination device 3c. However, this is not absolutely necessary.
  • the roll stands 1 are arranged one behind the other as viewed in a rolling direction x.
  • the same section of the metal strip 2 therefore passes through the roll stands 1 in succession.
  • the metal strip 2 can be made of steel or aluminum, for example.
  • the rolling can be hot rolling, for example, in particular in a multi-stand finishing train of a hot rolling mill.
  • FIG 2 shows a single roll stand 1.
  • the roll stand 1 can be one of the roll stands 1 of the rolling train from FIG 1 Act.
  • an additional roll stand 1 of the rolling mill is also drawn.
  • this further roll stand 1 is only shown in dashed lines, since it is part of FIG 2 and the other figures, only the roll stand 1 shown in solid lines is important.
  • the following explanations therefore relate to this roll stand 1 .
  • it can be a reversing stand in which the metal strip 2 is rolled in reverse.
  • the roll stand 1 can be the only one Be roll stand in which the metal strip 2 is rolled.
  • the roll stand 1 is - just like the roll stands 1 of FIG 1 - Controlled by a control device 3b with a stand controller 3a, wherein the control device 3b can be superordinated by a coordination device 3c.
  • the control devices 3b are each programmed with a control program 4 . This is shown in 1 and 2 only for one of the control devices 3b.
  • the control program 4 includes machine code 5, which can be processed by the control device 3b.
  • the processing of the machine code 5 by the control device 3b causes the control device 3b to control the roll stand 1 according to a control method which will be explained in more detail below.
  • a control method which will be explained in more detail below.
  • the control device 3b takes from a detection device 6 - see also a step S1 in 3 - Measurement data M contrary.
  • the measurement data M are received during the rolling of the metal strip 2 in the roll stand 1.
  • the measurement data M are for a corresponding to the representation in FIG 4 characteristic of a lateral position y of the metal strip 2 on the exit side of the roll stand 1 .
  • the control device 3b therefore determines the lateral position y of the metal strip 2 from the measurement data M in a step S2.
  • it determines a swivel value ⁇ s for the roll stand 1 in a step S3.
  • the determination takes place from the start in such a way that the lateral position y of the metal strip 2 is approximated to the desired position y*.
  • the stand controller 3a controls the roll stand 1 in accordance with the ascertained swivel value ⁇ s.
  • the scaffold controller 3a When determining the swivel value ⁇ s, the scaffold controller 3a not only takes into account the deviation of the lateral position y from a target position y*, but also at least one parameter P, usually several parameters P.
  • Parameter P are different than variables.
  • a variable is a quantity that changes every cycle of the stand controller 3a.
  • Typical variables are the setpoint y*, the actual value y and the manipulated variable ⁇ s.
  • Parameters P are values which are generally specified only once for the stand controller 3a and are then kept constant during the entire control process—ie over a large number of cycles.
  • the parameter P can be a proportional gain or an integration time constant.
  • the parameters P can be specified, for example, by a maximum permissible value for the pivoting value ⁇ s or a maximum value for the change in the pivoting value ⁇ s from cycle to cycle of the stand controller 3a.
  • the maximum permissible value for the swiveling value ⁇ s can, if necessary, be specified separately for the two swiveling directions.
  • control device 3b corresponds to a normal strip position control, as is generally known and also in detail, for example, in EP 3 202 502 A1 is explained.
  • the present invention is based on this procedure.
  • the control device 3b determines in a step S5 at least one variable V1, V2, Q1, Q2, from which for both strip edges 7, 8 of the metal strip 2 (see FIG 4 ) shows whether the metal strip 2 has a wave 9 in the area of the respective strip edge 7, 8 (see 5 ) trains.
  • the control device 3b uses the at least one variable V1, V2, Q1, Q2 to check whether and, if so, at which strip edge 7, 8 the metal strip 2 forms a wave 9.
  • step S6 If the check in step S6 is negative, ie no shaft 9 is detected, step S7 is skipped. If, on the other hand, the check of step S6 is positive, ie a wave 9 is detected, the control device 3b goes to step S7. In step S7, the control device 3b varies at least one of the parameters P of the stand controller 3a. From this point in time, i.e. from the point at which the at least one parameter P varies, the stand controller 3a determines the swivel value ⁇ s, taking into account the varied parameter P.
  • the control device 3b varies the parameter P in such a way that the formation of the wave 9 is counteracted or an extent h to which the wave 9 forms is limited to a predetermined extent.
  • the control device 3b can vary that parameter P which defines the maximum permissible value for the swiveling value ⁇ s. In particular, this value can be reduced in terms of amount, starting from its currently valid value.
  • the variation can be carried out for both pivoting directions or only for that pivoting direction which is responsible for the wave 9 which has occurred.
  • the determination of the pivot value ⁇ s within the scope of the present invention takes into account the fact whether the metal strip 2 in the area of one of its strip edges 7, 8 has a wave 9 trains.
  • the control device 3b retains the varied parameter P in the further course until a special event occurs, as a result of which the value of the corresponding parameter P is varied again.
  • a special event is that despite the just mentioned variation of the parameter P, a wave 9 is again detected at one of the strip edges 7, 8.
  • a special event consists in the fact that despite the variation just mentioned of the parameter P at the same band edge 7, 8 as before, a wave 9 is again detected.
  • Other special events include a change in the rolling process.
  • the control device 3b checks in a step S11 whether the tensile state Z of the metal strip 2 has changed.
  • the tension state Z changes in particular when there is a transition from rolling the metal strip 2 under tension to rolling the metal strip 2 without tension or, conversely, there is a transition from rolling the metal strip 2 without tension to rolling the metal strip 2 under tension.
  • a change from rolling the metal strip 2 without tension to rolling the metal strip 2 under tension usually occurs in particular when a strip head 11 of the metal strip 2 enters a downstream device, for example in a multi-stand rolling train is threaded into the downstream roll stand 1 .
  • control device 3b can check in a step S12 whether the metal strip 2 has been completely rolled in the roll stand 1 .
  • the parameters P can be redefined in a step S13.
  • Step S21 is executed if the control device 3b varies the at least one parameter P.
  • the control device 3b carries the varied parameter P, with assignment to data D characteristic of the rolled metal strip 2, to a database DB (see FIG 2 ) to.
  • a database DB see FIG 2
  • the control device 3b before rolling a respective metal strip 2, in step S22 to use characteristic data D for the metal strip 2 to be newly rolled to check whether there is data in the database DB for such a metal strip 2 or a metal strip 2 with sufficiently similar characteristic data D parameters P are already stored. If such parameters P are stored, the control device 3b can call up these parameters P as initial values from the database DB in step S23. Otherwise, the control device 3b can set standard values for the parameters P in step S24.
  • the measurement data M can be determined as needed.
  • the detection device 6 is also designed accordingly.
  • the detection device 6 is a single camera 7 or - see FIG 4 - Be designed as a group of cameras 10.
  • the measurement data M are images B or groups of images B.
  • the groups of images B only include a single image B each.
  • the respective image B relates to a respective acquisition time.
  • the detection device 6 can also be designed as a group of cameras 10 .
  • the cameras 10 each capture their own image B.
  • the individual cameras 10 each capture their respective image B at a uniform capture time.
  • the images B of the respective group are related to a respective uniform capture time.
  • the control device 3b preferably evaluates the groups of images B not only as part of step S2, i.e. as part of the determination of the lateral position y of the metal strip 2. Rather, the control device 3b preferably also evaluates the groups of images B as part of step S5 for the determination the at least one variable V1, V2, Q1, Q2, which shows for both strip edges 7, 8 of the metal strip 2 whether the metal strip 2 forms a wave 9 in the region of the respective strip edge 7, 8.
  • the groups of images B can each include more than one image B.
  • the control device 3b can preprocess the images B recorded at a uniform recording time in such a way that it determines the three-dimensional surface of the metal strip 2 .
  • the control device 3b evaluates the determined three-dimensional surface of the metal strip 2 in step S5.
  • the corresponding image B is a so-called depth image.
  • the control device 3b evaluates the three-dimensional surface of the metal strip 2 in step S5.
  • step S5 i.e. to determine the at least one variable V1, V2, Q1, Q2, from which it can be seen for both strip edges 7, 8 of the metal strip 2 whether the metal strip 2 forms a wave 9 in the region of the respective strip edge 7, 8
  • the control device 3b can be activated as shown in FIG 8 in a step S31, as part of the evaluation of the respective group of images B for one strip edge 7, 8 of the metal strip 2, determine the extent of a wave 9, in which the metal strip 2 forms the wave 9 in the region of the strip edge 7, 8.
  • the control device 3b can determine the height h of the shaft 9 .
  • the control device 3b executes an algorithm in a broader sense.
  • the control device 3b with a learning algorithm can be programmed, the learning algorithm in a learning phase in advance - so before Execution of the tax procedure of 3 -
  • the associated extent for example the height h of the shaft 9, is communicated so that the control device 3b could "learn" the correct evaluation.
  • Boolean information derived from the extent can also be supplied to the control device 3b.
  • the control device 3b uses the learning algorithm to determine the associated extent or the Boolean information derived therefrom.
  • other information can also be supplied to the control device 3b as part of the learning process, for example control interventions by operators when rolling the metal strip 2.
  • a step S32 the control device 3b checks whether the determined extent exceeds a predetermined threshold value SW. If this is the case, the control device 3b sets a Boolean variable V1 to the value TRUE in a step S33. Otherwise, in a step S34, the control device 3b sets the Boolean variable V1 to the value FALSE.
  • control device 3b determines the value of a Boolean variable V2 for the other band edge 8 in a completely analogous manner.
  • the Boolean variables V1, V2 are the at least one variable that indicates whether the metal strip 2 is in the range of the respective Band edge 7, 8 forms a wave 9.
  • a variable with at least three values could of course also be used. For example, the value +1 could be used for a wave 9 at one band edge 7, the value -1 for a wave 9 at the other band edge 8, and the value 0 for no wave 9.
  • step S41 the control device 3b determines a quantified value Q1 for the extent determined in step S31.
  • the control device 3b accepts the extent determined in step S31.
  • the control device 3b preferably determines the associated I-unit of the metal strip 2 in the region of the strip edge 7, 8 as a quantified value Q1 on the basis of the extent determined in step S31.
  • control device 3b determines in step S42 a quantified value Q2 for the extent determined in step S35.
  • the quantified values Q1, Q2 therefore represent the at least one variable from which it can be seen whether the metal strip 2 forms a wave 9 in the region of the respective strip edge 7, 8.
  • a uniform variable could of course also be used which, for example, in the case of a positive value, indicates the height h of the wave 9 at one band edge 7 and, in the case of a negative value, the height h of the wave 9 at the other band edge 8 indicates.
  • FIG 4 Figures B show the metal strip 2 on the outlet side of the roll stand 1 in a stress-free state.
  • the roll stand 1 is configured purely as a reversing stand, this is the case anyway.
  • the roll stand 1 as part the multi-stand rolling mill from FIG 1 this results for the time range in which the strip head 11 of the metal strip 2 has already passed through the roll stand 1, but has not yet reached the further roll stand 1 shown in dashed lines.
  • coil boxes or similar devices are arranged upstream and downstream of the roll stand 1, this applies in each case up to the point in time at which the strip head 11 reaches the respective coil box.
  • the same explanations apply to the tape foot.
  • the present invention was explained above in connection with a detection of the lateral position y on the outlet side of the roll stand 1 . This represents the normal case of the present invention. Alternatively or additionally, however, it is also possible to carry out the procedure with regard to the entry side of the roll stand 1 .
  • the present invention has many advantages.
  • the procedure according to the invention allows not only an error in the running of the strip to be identified and corrected, but also an error when throwing a wave 9 .
  • the detection of waves 9 as such in the captured images B can be implemented without any problems.
  • the procedure according to the invention can be used in particular for the automated optimization of operation when threading the metal strip 2 into a subsequent roll stand 1 or generally when the metal strip 2 enters a subsequent device.
  • the necessary hardware for capturing and processing the images B is usually available anyway, so that only the costs for the associated software are incurred.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Metal Rolling (AREA)

Claims (15)

  1. Procédé de commande pour une cage de laminage (1),
    - dans lequel un dispositif de commande (3b) pour la cage de laminage (1) pendant le laminage d'un ruban métallique (2) dans la cage de laminage (1) accepte des données de mesure (M) pour une position latérale (y) du ruban métallique (2) existant côté entrée et/ou côté sortie de la cage de laminage (1),
    - dans lequel un régulateur de cage (3a) du dispositif de commande (3b) détermine en prenant en compte des paramètres (P) du régulateur de cage (3a) en fonction de l'écart entre la position latérale (y) et une position théorique (y*) une valeur de pivotement (5s) pour la cage de laminage (1) et commande de manière correspondante la cage de laminage (1),
    caractérisé en ce que :
    - le dispositif de commande (3b) détermine au moins une grandeur (V1, V2, Q1, Q2) qui permet de savoir pour deux arêtes de ruban (7, 8) du ruban métallique (2) si le ruban métallique (2) forme une ondulation (9) dans la zone de l'arête de ruban (7, 8) respective, et
    - le dispositif de commande (3b), dès que le ruban métallique (2) forme une ondulation (9) dans la zone d'une des arêtes de ruban (7, 8) respectives, fait varier au moins un des paramètres (P) du régulateur de cage (3a), de sorte que le régulateur de cage (3a) détermine la valeur de pivotement (5s) à partir de la variation de l'au moins un paramètre (P) en prenant en compte le paramètre (P) modifié.
  2. Procédé de commande selon la revendication 1,
    caractérisé en ce que
    le dispositif de commande (3b) fait varier le paramètre (P) de telle sorte qu'une action contraire à la formation de l'ondulation (9) est réalisée ou qu'une ampleur (h) avec laquelle l'ondulation (9) se forme est limitée à un niveau prédéterminé.
  3. Procédé de commande selon la revendication 1 ou 2, caractérisé en ce que
    le dispositif de commande (3b) conserve le paramètre (P) varié jusqu'à ce que soit le dispositif de commande (3b) renouvelle la variation du paramètre (P) en raison d'une formation renouvelée d'une ondulation (9) dans le ruban métallique (2) soit que l'état de traction (Z) du ruban métallique (2) change soit que le ruban métallique (2) soit entièrement laminé dans la cage de laminage (1).
  4. Procédé de commande selon la revendication 1, 2 ou 3, caractérisé en ce que
    le dispositif de commande (3b) mène le paramètre (P) varié à une base de données (DB) par association à des données caractéristiques (D) pour le ruban métallique (2) laminé, de sorte que le paramètre (P) varié est disponible lors du laminage d'un autre ruban métallique (2) avec les mêmes données caractéristiques (D) ou des données caractéristiques suffisamment similaires en tant que valeur initiale pour le paramètre (P).
  5. Procédé de commande selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le dispositif de commande (3b) accepte en tant que données de mesure (M) pour la position latérale (y) du ruban métallique (2) des groupes d'images (B) du ruban métallique (2) qui montrent le ruban métallique (2) lors de la sortie de la cage de laminage (1) et/ou lors de l'entrée dans la cage de laminage (1), dans lequel les images (B) des groupes se rapportent respectivement à un moment de détection unique pour le groupe respectif.
  6. Procédé de commande selon la revendication 5,
    caractérisé en ce que
    les groupes sont déterminés par des images (B) de telle sorte qu'ils permettent une détermination tridimensionnelle de la surface du ruban métallique (2).
  7. Procédé de commande selon la revendication 5 ou 6, caractérisé en ce que
    le dispositif de commande (3b) détermine l'au moins une grandeur (V1, V2, Q1, Q2) qui permet de savoir pour deux arêtes de ruban (7, 8) du ruban métallique (2) si le ruban métallique (2) forme une ondulation (9) dans la zone de l'arête de ruban (7, 8) respective, à l'aide des groupes d'images (B) du ruban métallique (2).
  8. Procédé de commande selon la revendication 7,
    caractérisé en ce que
    le dispositif de commande (3b)
    - à l'aide du groupe respectif d'images (B) détermine respectivement une ampleur avec laquelle le ruban métallique (2) forme l'ondulation (9) dans la zone de l'arête de ruban (7, 8) respective,
    - compare l'ampleur respectivement déterminée avec une valeur seuil (SW) et
    - détermine l'au moins une grandeur (V1, V2) en fonction de la comparaison respective en tant que variable booléenne (V1, V2) respective.
  9. Procédé de commande selon la revendication 7,
    caractérisé en ce que
    le dispositif de commande (3b)
    - à l'aide du groupe respectif d'images (B) détermine quantitativement respectivement une ampleur avec laquelle le ruban métallique (2) forme l'ondulation (9) dans la zone de l'arête de ruban (7, 8) respective, et
    - exploite en tant qu'au moins une grandeur (Q1, Q2) les valeurs (Q1, Q2) quantifiées.
  10. Procédé de commande selon la revendication 9,
    caractérisé en ce que
    le dispositif de commande (3b) détermine les valeurs (Q1, Q2) quantifiées dans des indices de planéité.
  11. Procédé de commande selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    le ruban métallique (2) se trouve dans un état sans tension pendant la réalisation du procédé de commande devant et/ou derrière la cage de laminage (1).
  12. Programme de commande, dans lequel le programme de commande comprend un code informatique (5) qui est exécutable par un dispositif de commande (3b) pour une cage de laminage (1), dans lequel l'exécution du code informatique (5) par le biais du dispositif de commande (3b) a pour effet que le dispositif de commande (3b) réalise un procédé de commande selon l'une quelconque des revendications précédentes.
  13. Dispositif de commande pour une cage de laminage (1), dans lequel le dispositif de commande est programmé avec un programme de commande (4) selon la revendication 12, de sorte que le dispositif de commande réalise pendant un fonctionnement un procédé de commande selon l'une quelconque des revendications 1 à 11.
  14. Unité de laminage, dans laquelle l'unité de laminage présente une cage de laminage (1) dans laquelle un ruban métallique (2) est laminé, dans laquelle l'unité de laminage présente un dispositif de commande (3b) selon la revendication 13, dans laquelle la cage de laminage (1) est commandée par le dispositif de commande (3b).
  15. Train de laminage, dans lequel le train de laminage présente plusieurs cages de laminage (1), dans lequel les cages de laminage (1) sont disposées les unes derrières les autres vues dans une direction de laminage (x), de sorte qu'elles sont traversées les unes après les autres par la même section du ruban métallique (2), dans lequel au moins une des cages de laminage (1) est réalisée en tant qu'unité de laminage selon la revendication 14.
EP19165536.4A 2019-03-27 2019-03-27 Procédé permettant d'éviter les ondulations lors du laminage des bandes métalliques Active EP3715000B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP19165536.4A EP3715000B1 (fr) 2019-03-27 2019-03-27 Procédé permettant d'éviter les ondulations lors du laminage des bandes métalliques
JP2021557146A JP7277604B2 (ja) 2019-03-27 2020-03-05 金属ストリップの圧延に際する起伏の防止
US17/598,343 US11858021B2 (en) 2019-03-27 2020-03-05 Preventing undulations when rolling metal strips
PCT/EP2020/055886 WO2020193099A1 (fr) 2019-03-27 2020-03-05 Prévention de la formation d'ondes lors du laminage de bandes métalliques
CN202080025270.1A CN113646102B (zh) 2019-03-27 2020-03-05 在轧制金属带时避免卷曲

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19165536.4A EP3715000B1 (fr) 2019-03-27 2019-03-27 Procédé permettant d'éviter les ondulations lors du laminage des bandes métalliques

Publications (2)

Publication Number Publication Date
EP3715000A1 EP3715000A1 (fr) 2020-09-30
EP3715000B1 true EP3715000B1 (fr) 2022-01-12

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US (1) US11858021B2 (fr)
EP (1) EP3715000B1 (fr)
JP (1) JP7277604B2 (fr)
CN (1) CN113646102B (fr)
WO (1) WO2020193099A1 (fr)

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JPS59189012A (ja) * 1983-04-12 1984-10-26 Ishikawajima Harima Heavy Ind Co Ltd 圧延材の横曲り制御装置
JPS606214A (ja) 1983-06-27 1985-01-12 Nisshin Steel Co Ltd 板圧延における蛇行防止方法及び装置
JPS63171213A (ja) * 1987-01-08 1988-07-15 Mitsubishi Heavy Ind Ltd 圧延材の蛇行量検出方法
JP2716918B2 (ja) * 1992-10-30 1998-02-18 三菱重工業株式会社 製鉄熱延ラインの鋼板キャンバ検出方法
JPH0854217A (ja) 1994-08-09 1996-02-27 Nippon Steel Corp 鋼板エッジ部の板波計測方法
JPH1128510A (ja) 1997-07-09 1999-02-02 Nippon Steel Corp 熱間圧延粗圧延自動レベリング方法
JP2000301222A (ja) * 1999-04-21 2000-10-31 Nisshin Steel Co Ltd 形状制御装置
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EP2258492A1 (fr) * 2009-06-02 2010-12-08 Siemens Aktiengesellschaft Procédé de fabrication d'un produit de laminage à l'aide d'une chaîne de laminage, dispositif de commande et/ou de réglage d'une chaîne de laminage, installation de laminage destinée à la fabrication de produits de laminage laminés, code de programme lisible sur machine et support de stockage
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EP3202502A1 (fr) 2016-02-04 2017-08-09 Primetals Technologies Germany GmbH Reglage de position de bande

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Publication number Publication date
CN113646102A (zh) 2021-11-12
US11858021B2 (en) 2024-01-02
WO2020193099A1 (fr) 2020-10-01
EP3715000A1 (fr) 2020-09-30
US20220250128A1 (en) 2022-08-11
CN113646102B (zh) 2023-08-11
JP7277604B2 (ja) 2023-05-19
JP2022526923A (ja) 2022-05-27

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