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EP3544751B1 - Réglage de position de bande consistant à positionner des guides latéraux sur la bande métallique, avec limitation de force - Google Patents

Réglage de position de bande consistant à positionner des guides latéraux sur la bande métallique, avec limitation de force Download PDF

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Publication number
EP3544751B1
EP3544751B1 EP17816453.9A EP17816453A EP3544751B1 EP 3544751 B1 EP3544751 B1 EP 3544751B1 EP 17816453 A EP17816453 A EP 17816453A EP 3544751 B1 EP3544751 B1 EP 3544751B1
Authority
EP
European Patent Office
Prior art keywords
roll stand
strip
force
rolling train
operating method
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
EP17816453.9A
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German (de)
English (en)
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EP3544751A1 (fr
Inventor
Ilhom Gafur
Mirko TUNK
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 Germany GmbH
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Primetals Technologies Germany GmbH
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Publication of EP3544751A1 publication Critical patent/EP3544751A1/fr
Application granted granted Critical
Publication of EP3544751B1 publication Critical patent/EP3544751B1/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
    • B21B37/68—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
    • B21B39/00—Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B39/14—Guiding, positioning or aligning work
    • B21B39/16—Guiding, positioning or aligning work immediately before entering or after leaving the pass
    • B21B39/165—Guides or guide rollers for rods, bars, rounds, tubes ; Aligning guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/12—End of product
    • B21B2273/14—Front end or leading end
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/22—Aligning on rolling axis, e.g. of roll calibers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/24—Web positioning

Definitions

  • the present invention is further based on a computer program that includes machine code that can be processed by a control device for a rolling train, the processing of the machine code by the control device causing the control device to operate the rolling train according to such an operating method.
  • the present invention is further based on a control device for a rolling train, the control device being programmed with such a computer program, so that the control device operates the rolling train according to such an operating method.
  • Such an operating method, the corresponding computer program, the control device and the rolling train are for example from the WO 2006/119 984 A1 known.
  • the metal strip does not run straight, but in an arc (also called saber in professional circles) towards the next roll stand.
  • the metal strip therefore arrives eccentrically at the downstream roll stand. This in turn results in an asymmetrical reduction in the downstream roll stand.
  • the metal strip can therefore also run out of the downstream roll stand with a saber. The saber can point in the same direction as before or in the opposite direction.
  • Lateral guides are provided to limit the lateral migration of the metal strip.
  • the lateral guides are operated in a position-controlled manner in the prior art. If the lateral position of the metal strip deviates only slightly from the target position, the metal strip does not contact the side guides. Otherwise, the sideways migration is caused by one-sided grinding on one of the two side guides limited or takes place in a snake shape within the two side guides. One-sided sanding damages the belt edges. Because of the uncontrolled lateral movement of the strip, a snake-like wandering leads to an off-center piercing in the downstream roll stand and thus to flatness errors. In the extreme case, the strip head can completely miss the roll gap of the following roll stand or enter the roll gap of the following roll stand twice.
  • the side guides are usually set tightly in order to leave the metal strip only a small amount of lateral movement. This also has the consequence that the tape edges are ground off by the side guides and that the tape is tensioned in itself.
  • an operating method for a rolling train is known in which a metal strip is rolled, which has a tape head.
  • the rolling train has a front and a rear roll stand, between which side guides for the metal strip are arranged.
  • the lateral position of the strip head is detected by means of an optical detection device and used to track the adjustment of the upstream roll stand. This approach gives good results.
  • the optical detection device is required.
  • the object of the present invention is to create ways of being able to adjust the tape position quickly, easily and reliably.
  • the presence of an independent detection device for the deviation of the lateral position of the metal strip from the target position should not be necessary.
  • the risk of tape doublers should be reduced or avoided.
  • the time derivative of the deviation of the lateral position of the tape head from the target position is used when determining the setting command, and the setting command is determined in such a way that a change in the deviation of the lateral position of the tape head from the target position - mind you, the change - is counteracted .
  • the metal strip runs out of the front roll stand as straight as possible by means of a finely metered counter control.
  • the lateral guides prefferably be set against the metal strip in a force-controlled manner via a respective force regulator and for a force setpoint effecting the force limitation to be specified for the respective force regulator.
  • both side guides are always in contact with the metal band. This has the advantage that even slight deviations of the lateral position of the metal strip from the desired position can be easily detected.
  • the force regulators are preferably only activated at a point in time at which the strip head has run out of the front roll stand by a predetermined length. This ensures that the tape head can reliably run into the area between the two side guides. In particular, this prevents the front edge of the belt extending in the direction of the width of the belt from hitting one of the side guides and thereby causing a high walker.
  • the force regulators can in particular determine a respective additional setpoint value for a respective subordinate position regulator, by means of which a position control of the respective lateral guidance takes place.
  • the lateral guides can be moved to a respective reference position in a position-controlled manner via a respective position controller.
  • the reference positions are preferably specified in such a way that, in the case of a central, completely straight transport, the metal strip has a respective distance from both side guides.
  • the position regulators each determine a force setpoint for a respective subordinate force regulator as the respective manipulated variable.
  • the respective force setpoint is limited to a force limit value by means of a respective limiter.
  • the limiters can be part of the respective position regulator or independent units arranged between the position regulators and the force regulators.
  • the strip position controller preferably determines the control command in such a way that the change in the deviation is reduced as much as possible, in particular becomes zero.
  • the metal strip runs out of the front roll stand as straight as possible - in the ideal case completely straight - from the point in time at which the change in the deviation is reduced as much as possible.
  • the strip position controller When determining the setting command, the strip position controller preferably takes into account a current length by which the strip head has run out of the front roll stand. This results in a linearization of the positioning action of the belt position controller.
  • a setting is made using a model of the rolling train of the front roll stand determines to which the front roll stand is set from the entry of the strip head into the front roll stand. This setting is retained until the deviation of the lateral position of the tape head from the target position is detected by means of the side guides.
  • the model is preferably adapted on the basis of the setting command determined by the strip position controller and, when a further metal strip is rolled, the setting of the front roll stand is determined on the basis of the adapted model. As a result, the model can be gradually improved, so that continuously improved settings can be determined for metal strips to be rolled in the future.
  • a model of the rolling train can also be used to determine a setting of the rear roll stand to which the rear roll stand is set at the point in time at which the strip head enters the rear roll stand. It is possible that when determining the setting of the rear roll stand, the adjustment command determined by the strip position controller for the front roll stand and / or the deviation of the lateral position of the strip head from the target position and / or the temporal change in the lateral position of the strip head are taken into account. In this way, under certain circumstances, the strip run can already be optimized for the strip currently being rolled.
  • the object is also achieved by a computer program with the features of claim 11.
  • the processing of the computer program causes the control device to operate the rolling train according to an operating method according to the invention.
  • control device for a rolling train having the features of claim 12.
  • the control device is programmed with a computer program according to the invention, so that the control device operates the rolling train according to an operating method according to the invention.
  • control device operates the rolling train in accordance with an operating method according to the invention.
  • the front and rear roll stands are preferably roll stands of a rolling train designed as a finishing train.
  • a metal strip 1 is to be rolled in a rolling train.
  • the metal strip 1 is conveyed through the rolling train in a transport direction x.
  • the metal band 1 can be, for example, a steel band, an aluminum band, a copper band, a brass band or a band made of another metal.
  • the rolling train has several rolling stands 2. As a rule, the rolling train is designed as a finishing train. Accordingly, the roll stands 2 are generally the roll stands 2 of a finishing train.
  • the number of roll stands 2 is usually between four and eight, for example five, six or seven. Of the roll stands 2 are in FIG 1 (and also in the other figures) only their work rolls 3 are shown. As a rule, however, the roll stands 2 have, in addition to the work rolls 3, additional rolls, especially in the case of four-high stands in addition to the work rolls 3, and in the case of six-high stands, in addition to the work rolls, 3 back-up rolls and intermediate rolls.
  • the work rolls 3, the intermediate rolls and / or the backup rolls can be axially displaceable. However, this is not absolutely necessary. Behind the last roll stand 2 there is often a cooling section and / or a reel (not shown in the figures).
  • the rolling train is controlled by a control device 4.
  • the control device 4 usually controls the entire rolling train. It is therefore usually only available once for all roll stands 2 of the rolling train. A parameterization of the control device 4 with regard to the individual roll stands 2 can, however, be different from roll stand 2 to roll stand 2.
  • the control device 4 is generally designed as a software-programmable control device 4. It is therefore usually programmed with a computer program 5.
  • the computer program 5 determines the mode of operation of the control device 4.
  • the computer program 5 comprises machine code 6 which can be processed by the control device 4.
  • the processing of the machine code 6 has the effect that the control device 4 operates the rolling train in accordance with an operating method which is explained in more detail below in connection with the other FIG.
  • the front roll stand 2 of FIG 2 and 3 ie that roll stand from which the metal strip 1 runs out is the mainly relevant roll stand 2.
  • the rear roll stand 2 it is essentially only important that the metal strip 1 is guided to the rear roll stand 2.
  • the reference symbol 2a is used below for the front roll stand 2 and the reference symbol 2b is used for the rear roll stand 2.
  • the tape head 7 of the metal tape 1 i.e. the beginning of the metal strip 1 has already run out of the front roll stand 2a, but has not yet reached the rear roll stand 2b. This state is usually and also hereinafter referred to as the strip head 7 running out of the front roll stand 2a.
  • the rolling train also has between two roll stands 2 each - this is only shown in FIG FIG 3 for the area between the front and rear roll stands 2a, 2b - side guides 8, 8 '.
  • the side guides 8, 8 ' are adjustable via corresponding adjusting devices 9, 9'.
  • the actuating devices 9, 9 ' are generally designed as hydraulic cylinder units. The type and manner of adjustability is, however, of subordinate importance in the context of the present invention.
  • the metal strip 1 is guided laterally by means of the side guides 8, 8 '.
  • the side guides 8, 8 ' (more precisely: the actuating devices 9, 9') are operated in a force-limited manner within the scope of the present invention. This is true at least during the period between the exit of the strip head 7 from the front roll stand 2a and the entry of the strip head 7 into the rear roll stand 2b. Forces F, F ', which are exerted by the side guides 8, 8' on the side edges 10, 10 'of the metal strip 1, are therefore limited. In particular, the side guides 8, 8 'yield when the metal strip 1 exerts too great a force - that is, a force above a force limit value Fmax - on the side guides 8, 8'.
  • the force limit value Fmax can for example be between 2 kN and 10 kN, in particular between 4 kN and 6 kN. According to the representation in FIG 3 the control device 4 can be specified as a parameter. Regardless of whether the force limit value Fmax is specified as a parameter or not, the force limit value Fmax is kept constant within the scope of the operating method according to the invention.
  • the respective position p, p 'of the side guides 8, 8' can be detected by means of corresponding sensors 11, 11 '. If the detection takes place while the strip head 7 is between the front roll stand 2a and the rear roll stand 2b, the positions p, p 'are for the lateral position y of the tape head 7 and thus also for the deviation ⁇ y of the lateral position y from one Target position y * characteristic. This will be explained in more detail later in connection with two possible embodiments of the present invention.
  • the deviation ⁇ y of the lateral position y of the tape head 7 from a desired position y * can thus be quantitatively determined by means of the side guides 8, 8 '. It can therefore not only be recorded in a purely binary manner that the deviation ⁇ y has occurred and which direction the deviation ⁇ y may have. Rather, the extent of the deviation ⁇ y can also be recorded, that is to say to what extent the deviation ⁇ y occurred.
  • the positions p, p ′ can therefore be fed to a determination device 12.
  • the determination device 12 can use the detected positions p, p 'to determine the lateral position y of the tape head 7 and the deviation ⁇ y of the lateral position y of the tape head 7 from the target position y *.
  • the lateral position y can, as required, be related to one of the two side edges 10, 10 'or to a location between the two side edges 10, 10' - in particular the middle of the strip.
  • the lateral layer y is on the middle of the tape - in FIG 3 indicated by a dashed line - is related. This definition facilitates the arithmetic and the explanation of the invention, but is not associated with a content restriction.
  • the control device 4 implements as shown in FIG FIG 3 while processing the computer program 5, often a strip position controller 13 for the front roll stand 2a, among other things.
  • the strip position controller 13 can be designed, for example, as a conventional PI controller. Alternatively, the strip position controller can be designed as a model predictive controller, for example.
  • the deviation ⁇ y is fed to the strip position controller 13.
  • the strip position controller 13 determines a control command S for the front roll stand 2a.
  • the change in the deviation ⁇ y (that is to say not the absolute value of the deviation ⁇ y, but the speed at which the tape head 7 migrates laterally) is counteracted by means of the setting command S.
  • the roll stand 2a is acted upon in accordance with the control command S determined.
  • the control command S can in particular cause a differential rolling force or a differential rolling gap.
  • the strip position controller 13 acts on the front roll stand 2a according to the determined control command S.
  • the side guides 8, 8 ' are according to the illustration in FIG 4 Attached to the metal strip 1 in a force-controlled manner via a respective force regulator 14, 14 '.
  • the force regulators 14, 14 ′ are implemented by the control device 4 on the basis of the execution of the computer program 5.
  • the force regulators 14, 14 ' can be designed as conventional regulators, in particular as a P controller or PI controller.
  • the force limit value Fmax is given uniformly to the two force regulators 14, 14 'as the force setpoint F *, F' *.
  • the two force regulators 14, 14 ' According to the difference between the force setpoint F *, F '* and the respective actual force value F, F', the two force regulators 14, 14 'determine corresponding control commands q, q' for the actuating devices 9, 9 'and control them accordingly.
  • the specification of the force limit value Fmax as the force setpoint value F *, F '* for both force regulators 14, 14' causes the force to be limited in this case.
  • the two positions p, p ' are preferably used.
  • the accuracy of the determination of the lateral position y can be improved.
  • the sign of the sum of the positions p, p ′ can be evaluated, for example.
  • both side guides 8, 8 'rest on the side edges 10, 10' are therefore preferably only activated at a point in time at which the tape head 7 has run out of the front roll stand 2a by a predetermined length Lmin .
  • the predetermined length Lmin is as shown in FIG FIG 3 greater than the distance between the side guides 8, 8 'from the front roll stand 2a.
  • the force regulators 14, 14 are only activated after the mentioned point in time and the side guides 8, 8 'are thereby positioned against the side edges 10, 10'.
  • a position control can be active which holds the side guides 8, 8 'in a retracted position.
  • the current length L by which the strip head 7 has run out of the front roll stand 2a can be determined, for example, by integrating a transport speed v at which the metal strip 1 runs out of the roll stand 2a.
  • the force regulators 14, 14 ' act on the lateral guides 8, 8' via subordinate position regulators 15, 15 '.
  • the position of the respective lateral guide 8, 8 ' is controlled by means of the subordinate position regulators 15, 15'.
  • the position regulators 15, 15 'as shown in FIG FIG 5 corresponding reference positions p *, p '* and the associated positions p, p' are supplied.
  • the force controllers 14, 14 ' determine a respective additional setpoint ⁇ p, ⁇ p' for the respective subordinate position controller 15, 15 '.
  • the force regulators 14, 14 ' are generally designed as I regulators, that is to say they have an integrating effect.
  • the force regulators 14, 14 'in this case are generally followed by a respective limiter 16, 16', by means of which the output signal of the respective force regulator 14, 14 'is limited on one side. It is thereby achieved that the force regulators 14, 14 'can cause the lateral guides 8, 8' to yield, but not the closing of the lateral guides 8, 8 '.
  • the side guides 8, 8 ' are according to the illustration in FIG FIG 6 Moved to a respective reference position p *, p '* in a position-controlled manner via a respective position controller 15, 15'.
  • the reference positions p *, p '* are as before in connection with FIG 5 explained, determined in such a way that their difference is slightly greater than the width b of the metal strip 1.
  • the two position regulators 15, 15 '- independently of one another - each determine a force setpoint F *, F' * as the respective manipulated variable.
  • the two force setpoints F *, F '* are fed to limiters 16, 16'.
  • the force setpoints F *, F' * are limited on one side to the uniform force limit value Fmax.
  • the force setpoints F *, F '*, which may be limited, are then fed to the force regulators 14, 14'.
  • the force regulators 14, 14 ' are within the scope of the embodiment of FIG 6 the position regulators 15, 15 are subordinated.
  • a maximum of one of the two side guides 8, 8 ' is usually in contact with the respective adjacent side edge 10, 10'.
  • the other side guide 8 ', 8 is spaced apart from its adjacent side edge 10', 10. Only the position p, p 'of the side guide 8, 8', which rests on its associated side edge 10, 10 ', can be used to quantitatively determine the lateral position y. Which of the two side guides 8, 8 'this is can easily be determined using the forces F, F' and the positions p, p '.
  • the tape position controller 13 does not use the deviation ⁇ y of the lateral position y from the target position y * as part of the determination of the control command S, but rather its time derivative, i.e. the speed at which the tape head 7 migrates laterally.
  • the belt position controller 13 can also take into account the current length L and possibly other variables such as the transport speed v as part of the determination of the setting command S. This allows the behavior of the control to be linearized. If necessary, the strip position controller 13 can continue to smooth and / or limit the control command S.
  • the strip position controller 13 preferably determines the setting command S in such a way that the change in the deviation ⁇ y is reduced as much as possible, in particular to zero. Especially The reduction in the change in the deviation ⁇ y to zero means that the metal strip 1 is just running out of the front roll stand 2a from this point in time. This control is thus the desired control of the roll stand 2a. In contrast, the control command S is not determined in such a way that the deviation ⁇ y itself is reduced as far as possible.
  • the control device 4 implements, among other things, a model 17 of the rolling train based on the processing of the computer program 5 or the machine code 6.
  • the control device 4 uses the model 17 to determine a setting of the respective roll stand 2 to which the respective roll stand 2 is set. This determination is made before the strip head 7 enters the respective roll stand 2.
  • the determined setting applies to the point in time from the entry of the strip head 7 into the respective roll stand 2 or - essentially equivalent to this - for the point in time at which the strip head 7 the respective roll stand 2 is reached. This applies to each roll stand 2 of the rolling train and thus also to the front roll stand 2a and the rear roll stand 2b.
  • the setting determined by means of the model 17 for the front roll stand 2a is retained until the deviation ⁇ y of the lateral position y of the strip head 7 from the target position y * is detected by means of the side guides 8, 8 '. Up to this point in time, the setting of the front roll stand 2a is not corrected. Without further measures, a subsequent further metal strip 1 is therefore initially rolled with the same, possibly faulty settings.
  • the model 17 is therefore preferably adapted on the basis of the actuating command S determined by the strip position controller 13. This makes it possible to use the adapted model 17 as the basis for determining the setting of the front roll stand 2a when rolling the further metal strip 1.
  • the control command S is that control command S in which the change in the deviation ⁇ y is reduced as much as possible.
  • the adjustment of the front roll stand 2a is adjusted in advance by means of the model, despite the adjustment 17 determined setting of the rear roll stand 2b retained unchanged.
  • the setting command S determined by the strip position controller 13 for the front roll stand 2a and / or the deviation ⁇ y of the lateral position y of the strip head 7 from the target position y * and / or the time Change in the lateral position y must be taken into account, i.e. correct the previously determined setting.
  • This correction can also take place without adapting the model 17.
  • the model 17 can be designed in such a way that it determines the setting of the roll stands 2 taking into account the variables mentioned.
  • the control command S is that control command S in which the change in the deviation ⁇ y is reduced as far as possible.
  • the control device 4 which implements the operating method according to the invention, is designed in this way on the basis of the programming with the computer program 5.
  • the computer program thus effects as shown in FIG 3 , 4 and 5 that the control device 4 realizes corresponding software blocks.
  • the invention has many advantages.
  • damage to the side edges 10, 10 'and also to the side guides 8, 8' can be reliably avoided.
  • the risk of tape Doppler can also be significantly reduced. Nevertheless, it can be ensured in a simple manner that the metal strip 1 runs out of the front roll stand 2a as straight as possible.

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  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)

Claims (14)

  1. Procédé de fonctionnement pour un train de laminage, dans lequel une bande métallique (1), qui présente une tête de bande (7), est laminée,
    - le train de laminage comprenant au moins une cage de laminoir avant (2a) et une cage de laminoir arrière (2b) située en aval de la cage de laminoir avant (2a) et comprenant en outre des guides latéraux (8, 8') pour la bande métallique (1) entre les deux cages de laminoir (2a, 2b),
    - les guides latéraux (8, 8') étant actionnés avec une limitation de force,
    - un écart (5y) entre la position latérale (y) de la tête de bande (7) et une position de consigne (y*) étant détecté quantitativement au moyen des guides latéraux (8, 8') pendant l'intervalle de temps séparant la sortie de la tête de bande (7) de la cage de laminoir avant (2a) de l'entrée de la tête de bande (7) dans la cage de laminoir arrière (2b),
    - une instruction de réglage (S) pour la cage de laminoir avant (2a) étant déterminée au moyen d'un régulateur de position de bande (13),
    - la cage de laminoir avant (2a) étant soumise à l'action du régulateur de position de bande (13) conformément à l'instruction de réglage (S) déterminée,
    - caractérisé en ce que le régulateur de position de bande (13) détermine l'instruction de réglage (S) en évaluant la dérivée temporelle de l'écart (δy) entre la position latérale (y) de la tête de bande (7) et la position de consigne (y*) de manière à contrer une variation de l'écart (δy) entre la position latérale (y) de la tête de bande (7) et la position de consigne (y*).
  2. Procédé de fonctionnement selon la revendication 1, caractérisé en ce que les guides latéraux (8, 8') sont positionnés au niveau de la bande métallique (1) avec une régulation de force effectuée par un régulateur de force (14, 14') respectif et en ce qu'une valeur de consigne de force (F*, F'*) induisant la limitation de force est fournie comme valeur par défaut au régulateur de force (14, 14') respectif.
  3. Procédé de fonctionnement selon la revendication 2, caractérisé en ce que les régulateurs de force (14, 14') ne sont activés qu'à un moment où la tête de bande (7) est sortie d'une longueur prédéterminée (Lmin) de la cage de laminoir avant (2a).
  4. Procédé de fonctionnement selon la revendication 2 ou 3, caractérisé en ce que les régulateurs de force (14, 14') déterminent une valeur de consigne supplémentaire (δp, δp') respective pour un régulateur de position (15, 15') secondaire respectif, valeur à l'aide de laquelle une régulation de position du guide latéral (8, 8') respectif est effectuée.
  5. Procédé de fonctionnement selon la revendication 1, caractérisé en ce que les guides latéraux (8, 8') sont amenés à une position de référence (p*, p'*) respective avec une régulation de position effectuée par un régulateur de position (15, 15') respectif, en ce que les régulateurs de position (15, 15') déterminent à chaque fois, en tant que grandeur de réglage respective, une valeur de consigne de force (F*, F'*) pour un régulateur de force (14, 14') secondaire respectif, et en ce que la valeur de consigne de force (F*, F'*) respective est limitée à une valeur limite de force (Fmax) au moyen d'un limiteur (16, 16') respectif.
  6. Procédé de fonctionnement selon l'une des revendications précédentes,
    caractérisé en ce que le régulateur de position de bande (13) détermine l'instruction de réglage (S) de façon que la variation de l'écart (δy) soit la plus réduite possible, notamment soit nulle.
  7. Procédé de fonctionnement selon l'une des revendications précédentes,
    caractérisé en ce que le régulateur de position de bande (13) prend en compte, lors de la détermination de l'instruction de réglage (S), une longueur réelle (L) dont la tête de bande (7) est sortie, à chaque fois, de la cage de laminoir avant (2a).
  8. Procédé de fonctionnement selon l'une des revendications précédentes,
    caractérisé en ce qu'un ajustement de la cage de laminoir avant (2a) est déterminé, à l'aide d'un modèle (17) du train de laminage, avant l'entrée de la tête de bande (7) dans la cage de laminage avant (2a), ajustement auquel la cage de laminoir avant (2a) est soumise de l'entrée de la tête de bande (7) dans la cage de laminoir avant (2a) jusqu'à la détection au moyen des guides latéraux (8, 8') de l'écart (δy) entre la position latérale (y) de la tête de bande (7) et la position de consigne (y*), en ce que le modèle (17) est adapté à l'aide de l'instruction de réglage (S) déterminée par le régulateur de position de bande (13), et en ce que le modèle (17) adapté sert de base à la détermination de l'ajustement de la cage de laminoir avant (2a) lors du laminage d'une autre bande métallique (1).
  9. Procédé de fonctionnement selon l'une des revendications précédentes,
    caractérisé en ce qu'un ajustement de la cage de laminoir arrière (2b) est déterminé, à l'aide d'un modèle (17) du train de laminage, avant l'entrée de la tête de bande (7) dans la cage de laminage arrière (2b), ajustement auquel la cage de laminoir arrière (2b) est soumise au moment où la tête de bande (7) entre dans la cage de laminoir arrière (2b), et en ce que l'instruction de réglage (S) pour la cage de laminoir avant (2a), déterminée par le régulateur de position de bande (13), et/ou l'écart (δy) entre la position latérale (y) de la tête de bande (7) et la position de consigne (y*) et/ou la variation temporelle de la position latérale (y) de la tête de bande (7) sont pris en compte lors de la détermination de l'ajustement de la cage de laminoir arrière (2b).
  10. Procédé de fonctionnement selon l'une des revendications précédentes,
    caractérisé en ce que les cages de laminoir avant et arrière (2a, 2b) sont des cages de laminoir (2a, 2b) d'un train de laminage conçu en tant que train finisseur.
  11. Programme d'ordinateur qui comprend un code machine (6) qui peut être exécuté par un dispositif de commande (4) pour train de laminage, le résultat de l'exécution du code machine (6) par le dispositif de commande (4) étant que le dispositif de commande (4) fait fonctionner le train de laminage conformément à un procédé de fonctionnement selon l'une des revendications précédentes.
  12. Dispositif de commande pour train de laminage, le dispositif de commande étant programmé avec un programme d'ordinateur (5) selon la revendication 11, de façon que le dispositif de commande fasse fonctionner le train de laminage conformément à un procédé de fonctionnement selon l'une des revendications 1 à 10.
  13. Train de laminage pour le laminage d'une bande métallique (1) qui présente une tête de bande (7),
    - le train de laminage comprenant au moins une cage de laminoir avant (2a) et une cage de laminoir arrière (2b) située en aval de la cage de laminoir avant (2a) et comprenant en outre des guides latéraux (8, 8') pour la bande métallique (1) entre les deux cages de laminoir (2a, 2b),
    - le train de laminage comprenant un dispositif de commande (4) qui fait fonctionner le train de laminage conformément à un procédé de fonctionnement selon l'une des revendications 1 à 10.
  14. Train de laminage selon la revendication 13,
    caractérisé en ce que les cages de laminoir avant et arrière (2a, 2b) sont des cages de laminoir (2a, 2b) d'un train de laminage conçu en tant que train finisseur.
EP17816453.9A 2016-11-24 2017-11-06 Réglage de position de bande consistant à positionner des guides latéraux sur la bande métallique, avec limitation de force Active EP3544751B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16200523 2016-11-24
PCT/EP2017/078333 WO2018095717A1 (fr) 2016-11-24 2017-11-06 Régulation de la position d'une bande par positionnement à force limitée de guides latéraux au niveau de la bande métallique et correction du positionnement des cylindres

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EP3544751A1 EP3544751A1 (fr) 2019-10-02
EP3544751B1 true EP3544751B1 (fr) 2020-12-30

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WO (1) WO2018095717A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3599038A1 (fr) 2018-07-25 2020-01-29 Primetals Technologies Austria GmbH Procédé et dispositif de détermination du contour de bande latéral d'une bande métallique en mouvement
CN112823941B (zh) * 2019-11-21 2022-02-22 宝山钢铁股份有限公司 基于火花识别的热轧卷取侧导板控制方法
DE102021205275A1 (de) * 2021-05-21 2022-11-24 Sms Group Gmbh Verfahren zum Betreiben eines Walzgerüstes
TWI779910B (zh) * 2021-10-28 2022-10-01 中國鋼鐵股份有限公司 偵測邊導器鋼帶品質的軋延系統與偵測方法

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Publication number Priority date Publication date Assignee Title
DE102004043790A1 (de) 2004-09-08 2006-03-09 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH Verfahren und Vorrichtung zum Walzen eines Metallbands
DE102005021769A1 (de) 2005-05-11 2006-11-23 Sms Demag Ag Verfahren und Vorrichtung zur gezielten Beeinflussung der Vorbandgeometrie in einem Vorgerüst
EP2910316A1 (fr) * 2014-02-21 2015-08-26 Primetals Technologies Germany GmbH Précommande simple du pas de filetage d'un ébaucheur
DE102014215396A1 (de) * 2014-08-05 2016-02-11 Primetals Technologies Germany Gmbh Differenzzugregelung mit optimierter Reglerauslegung
DE102014215397B4 (de) 2014-08-05 2016-04-28 Primetals Technologies Germany Gmbh Bandlageregelung mit optimierter Reglerauslegung

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WO2018095717A1 (fr) 2018-05-31
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