EP3784423B1 - Laminoir à cylindres obliques à ajustement hydraulique des cylindres - Google Patents

Laminoir à cylindres obliques à ajustement hydraulique des cylindres Download PDF

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Publication number
EP3784423B1
EP3784423B1 EP19719287.5A EP19719287A EP3784423B1 EP 3784423 B1 EP3784423 B1 EP 3784423B1 EP 19719287 A EP19719287 A EP 19719287A EP 3784423 B1 EP3784423 B1 EP 3784423B1
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EP
European Patent Office
Prior art keywords
rolling
work rolls
cross
billet
rolling mill
Prior art date
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Active
Application number
EP19719287.5A
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German (de)
English (en)
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EP3784423A1 (fr
Inventor
Frank D'HONE
Martin Sauerland
Matthias Krahn
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SMS Group GmbH
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SMS Group GmbH
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Publication of EP3784423A1 publication Critical patent/EP3784423A1/fr
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Publication of EP3784423B1 publication Critical patent/EP3784423B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills
    • 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
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • 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
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/008—Skew rolling stands, e.g. for rolling rounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/06—Rolling hollow basic material, e.g. Assel mills
    • 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
    • B21B2271/04—Screw-down speed, draft speed
    • 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
    • B21B37/78—Control of tube rolling
    • 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

Definitions

  • the invention relates to a cross-rolling mill for rolling an ingot over a mandrel into a hollow ingot, comprising a plurality of work rolls, each of which exerts a substantially radially directed rolling force on the ingot, the work rolls being carried in a roll stand and the gap between the work rolls, preferably also the alignment of the roll axis of at least one of the work rolls relative to the block can be changed. Furthermore, the invention relates to a method for producing a hollow block from a block by means of such a cross-rolling mill.
  • a generic piercing mill and a generic method are out DE 21 56 595 A1 known.
  • a preheated block in the case of steel a block preheated to approx. 1,250°C, is rolled into a hollow block by means of two or more main work rolls over a mandrel located between the rolls.
  • the work rolls exert an essentially radially directed rolling force on the block and are mounted and supported for support in a roll stand, a so-called rolling mill stand, in such a way that at least the roll gap between the work rolls is set to the desired wall thickness of the hollow block to be produced can be.
  • mechanical spindle drives have been used for decades, which allow at least one roll gap setting before and after the rolling process.
  • a roll gap setting during the rolling process, in particular an automated roll gap setting during the rolling process itself, is nevertheless not possible as a result.
  • a cross-rolling mill for rolling an ingot over a mandrel to form a hollow ingot is specified, in which, instead of the previously used mechanical adjustment elements such as spindle drives, hydraulic adjustment elements, preferably hydraulic capsules, are provided for changing the roll gap, preferably also aligning the roll axis of at least one of the work rolls with respect to the billet.
  • the change in the roll gap by means of hydraulic adjustment elements compared to the block as a workpiece is understood in such a way that the work rolls are realigned to each other as required, whereby the roll gap dimension and geometry also remains variable during the rolling process.
  • the hydraulic ones Adjusting elements are preferably connected to chocks in a manner customary in the art, via which the work rolls are mounted adjustably in the respective roll stand.
  • a cross-rolling mill is made available for the first time which, due to the hydraulic adjustment elements, allows a change in the roll gap geometry or any other type of disturbance variable compensation even during the rolling process.
  • the work rolls are preset to a specific distance from one another, the so-called roll gap, via the hydraulic adjustment elements.
  • the mandrel held by a mandrel bar is located symmetrically between the work rolls in the cross-rolling mill according to the invention, over which mandrel the billet is then rolled to form a hollow billet. Due to the inclined position of the work rolls, the ingot is formed into a hollow block via the mandrel fixed in the roll gap and due to the drive applied to the block by the inclined position of the work rolls.
  • the work rolls for example the upper and lower work rolls, usually move to different extents in different spatial directions. This is all the more true when one or more of the work rolls is firmly connected to the roll stand and/or the foundation and is therefore only subject to minimal movements under load.
  • the previously set arrangement of both the work rolls and, if applicable, the mandrel is lost.
  • the roll gap increases as a result and the symmetry of the arrangement of the The work rolls and possibly the mandrel are shifted relative to one another, in particular since, for example, the upper and lower work rolls are shifted to different extents, for example upwards or downwards, due to the design.
  • hydraulic adjusting elements preferably hydraulic capsules
  • Disturbance variable adjustments which act in the x-direction horizontally transverse to the rolling direction, in the ⁇ -direction vertically to the rolling direction and in the z-direction in the rolling direction towards the outlet side, are preferably used as manipulated variables for the hydraulic adjustment elements of the work rolls.
  • the cross-rolling mill according to the invention preferably has, in addition to the work rolls, preferably the upper and lower work rolls, disks or guide shoes that laterally limit the roll gap, via which a central positioning of the billet and the outgoing hollow billet within the roll gap can be influenced.
  • These so-called Diescher disks usually have a circumferential profile in the shape of the hollow billet to be rolled and are arranged within the cross-rolling mill such that they can be set against the hollow billet.
  • the Diescher disks or the guide shoes also have hydraulic adjustment elements, which preferably support or can bring about a dynamic and online-acting disturbance variable compensation.
  • a measuring device is provided with which a change in the roll gap geometry and/or the roll gap shift and/or the position of the work rolls in space and their change during rolling operation can be determined.
  • this measuring device is connected to an evaluation unit that is suitable for determining the disturbance variables to be compensated for.
  • the measuring device can be arranged at any point of the roll stand or of its built-in elements essentially direct measurement on the work rolls is preferred, an indirect measurement, for example on a guide element such as a Diescher disk or a guide shoe, nevertheless allows conclusions to be drawn about the position of the work rolls or the individual guide elements in the roll stand under load via a corresponding correlation analysis.
  • a guide element such as a Diescher disk or a guide shoe
  • the measuring means comprises an optical image acquisition unit, which makes it possible to separate the measuring unit away from the roll stand and the circumstances that otherwise act on the measuring unit there and have a disruptive effect on the measurement result.
  • the measuring means comprises a camera, preferably a CCD camera. Using such a camera, the measuring unit can be positioned in the rolling mill in almost any position relative to the rolling stand and at the same time, if necessary after a corresponding calibration, provide all desired measurement results.
  • the measuring device is able to detect an image element associated with the roll stand, preferably one or more image elements associated with the adjustment elements for the work rolls, and is then able to determine their position and/or Determine shape change during the rolling process.
  • the at least one picture element is an active luminous body which, in an extremely preferred embodiment of the invention, is circular and has a defined diameter or is oval with a defined shape.
  • the image element is square or rectangular, in which case, for example, the evaluation of the change in one or more image element diagonals under load allows an indication of the rolling stand expansion or distortion.
  • the design of the picture element as an active luminous body advantageously supports image acquisition with particularly simple means.
  • the preferred configuration of the picture element with a circular shape and defined diameter or oval with a predetermined shape or square or rectangular with known diagonal dimensions supports calibration of the measurement with particularly simple means on the one hand, and on the other hand also creates the possibility of not only changing the position of the picture element during roll stand expansion, but also any deformation of the pixel due to any other type of roll stand distortion.
  • the advantage of this measuring method is that it creates the possibility of being able to evaluate many points of the flat image element in order to determine a single point. This reduces the susceptibility to interference compared to a conventional laser measurement, which only allows a single point observation.
  • the area consideration also allows a one-time calibration of the measuring device, regardless of its location, the position of the measuring device can thus be freely selected and even changed from one measurement to the next if necessary.
  • a method for producing a hollow billet from a billet by means of a cross mill for rolling a billet over a mandrel, more preferably a cross mill according to the first aspect of the invention preferably hydraulic adjustment elements, preferably hydraulic capsules, which are connected directly or indirectly to the work rolls, for example via roll chocks, change during the Rolling process the roll gap, as well as the alignment of the roll axis of at least one of the work rolls relative to the block.
  • a method is made available which, for the first time, makes it possible to make changes to the roll gap geometry during the rolling process and thereby counteract any disturbance variables that may be determined for the purpose of quality assurance or quality optimization of the rolling process.
  • the change in the roll gap is brought about when disturbance variables are determined in advance by an evaluation unit by means of measured changes in the roll gap geometry and/or the roll gap displacement and/or the position of the work rolls in space and their change during rolling operation have been.
  • a suitable control and regulation unit interacts with the evaluation unit to output a signal for manipulated variable compensation to the hydraulic adjustment elements.
  • the evaluation unit is connected to a measuring device, preferably an optical measuring device arranged at a distance from the roll stand, in particular a measuring device with an optical image acquisition unit.
  • this measuring device can detect an image element connected to the roll stand, preferably one or more image elements connected to the adjustment elements for the work rolls, and determine their position and/or shape changes during the rolling process.
  • the movement of the image elements is preferably dynamically recorded with high precision using the optical measuring device, with the changes ⁇ 1(t) and ⁇ y1(t) of the upper work roll or ⁇ x2(t), ⁇ y2(t) of the lower work roll preferably being determined online and using the evaluation unit is transmitted to the control and regulation unit for minimizing or compensating for the manipulated variables.
  • New manipulated variables for the hydraulic adjustment elements of the upper work roll and/or the lower work roll is calculated and the respective roll positions adjusted in such a way that the absolute roll gap error is minimized and symmetry to the original center can be restored.
  • This provides a method that allows very precise and highly dynamic disturbance variable compensation with simple, error-free and accurate means that can be used online, which means that for the first time during the rolling process in the cross-rolling mill an influence can be exerted on the rolling operation currently running.
  • the invention enables the dynamic compensation of the expansion of the rolling mill during rolling and the reduction or elimination of defects in the tube to be produced by the cross-rolling mill.
  • the measurement values are preferably recorded without contact and away from the roll stand, thus free from the influences that interfere with the measurement result near the roll gap, and allows the greatest possible flexibility in the arrangement of the measuring device to the roll stand, depending on local conditions.
  • movements of the roll stand can be recorded and compensated for during subsequent rolling operations, if necessary also during the ongoing rolling process.
  • measurements can be taken at several points simultaneously, and the measuring means can also be installed in a fixed manner, but can also be designed to be mobile.
  • Optical image acquisition using the CaliView® measuring device can be used for the measurement in a highly preferred manner. This can measure contours from a distance of 8 m to 40 m with an accuracy of 0.1 mm, whereby CaliView ® also has a serial image function to check the measurement.
  • the measurement can thus record movements of the roll stand determined during the rolling process and changes in the roll gap and the roll gap geometry resulting therefrom and use them during operation to readjust the work rolls or other manipulated variables. Due to the preferably known shape and dimension of the image element on the roll stand, an angular offset can also be provided when arranging the measuring device in relation to the roll stand, which should then be taken into account when calibrating the measuring device. In this way, the influence of the vapors occurring during the cross-rolling process and other influences that interfere with the measurement result can be limited to the unavoidable minimum.
  • figure 1 shows a first embodiment of the mode of operation of a cross-rolling mill, comprising an upper work roll 1 and a lower work roll 2.
  • the upper and lower work rolls 1, 2 are designed in the form of two truncated cones connected to one another at their large end faces and act during the forming of a billet 3 in a direction from left to right (z-direction) in figure 1 together with a mandrel 5 arranged on a mandrel rod 4 .
  • the block 3 is pushed through the roll gap between the upper and lower work rolls 1, 2 and conveyed over the mandrel 5 from the input side 6 to the output side 7 .
  • Hydraulic adjustment elements 8a, 8b and 9a, 9b are arranged at the respective ends of the upper and lower work rolls 1, 2, via which the position of the work rolls 1, 2 in relation to one another and in relation to the block 3 can be changed in almost any way, in particular in in a ⁇ -direction vertical to the rolling direction as shown.
  • the vertical adjustment of the hydraulic adjustment elements 8a, 8b, 9a, 9b can also change the roll gap between the upper and lower work rolls 1, 2, at least both in the ⁇ direction and in the z direction.
  • figure 2 12 shows another embodiment of an essential part of a rolling mill according to the invention, comprising an upper work roll 1 and a lower work roll 2, each showing a truncated cone shape with an unsteady jacket profile.
  • a roll gap 10 into which the billet 3 enters by moving in direction z towards the mandrel 5 and there in the interaction of the upper and lower work rolls 1, 2 with the locally fixed piercer mandrel 5 is formed into a hollow block (not shown).
  • hydraulic adjustment elements 8a, 8b or 9a, 9b by means of which the roll gap 10 and the local position of the roll axes 1a, 1b can be changed.
  • FIG 3 shows a schematic flowchart of the method according to the invention using a cross-rolling mill 11 according to the invention, which carries an upper work roll 1 and a lower work roll 2 .
  • Image elements MM1 and MM2 are arranged on the roll stands of the roll stand 11 and are constantly monitored with high precision and dynamically during the rolling operation, both in terms of their position and their shape, by a remotely arranged camera that is not shown in the picture.
  • Each change in position in the x-direction and y-direction Dx1(t), ⁇ y1(t) for the upper work roll 1 and Dx2(t), ⁇ y2(t) for the lower work roll 2 are recorded by the measuring unit (not shown) and an an evaluation unit (also not shown) is transmitted.
  • this evaluation unit it is in turn determined whether the changes in position of the picture elements MM1, MM2 detected by the picture unit (not shown) are to be regarded as manipulated variables to be compensated. If this is the case, the disturbance variables determined by the evaluation unit are forwarded to the HGC controller as the control and regulation unit (hydraulic gap control controller). Further process parameters go into the control and regulation unit (HGC), so that control commands Y1, Y2 are output to the hydraulic adjustment elements 8, 9 on the basis of predefined algorithms.
  • HGC control and regulation unit
  • these hydraulic adjustment elements 8, 9 change the roll gap geometry and, if necessary, the alignment of the (not shown) roll axes to each other. This makes it possible to output control and regulation commands online during the rolling process in a highly dynamic manner with constant acquisition and evaluation of measurement data, which are able to positively influence the rolling result and the course of the cross-rolling process.

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

Claims (19)

  1. Laminoir à cylindres obliques (11) pour le laminage d'un bloc (3) sur un mandrin (5) en un bloc creux, comprenant une pluralité de cylindres de travail (1, 2), qui exercent chacun une force de laminage orientée sensiblement radialement sur le bloc (3), dans lequel les cylindres de travail (1, 2) sont supportés dans une cage de laminoir et l'écartement (10) entre les cylindres de travail (1, 2) et l'orientation de l'axe (1a, 2a) d'au moins un des cylindres de travail (1, 2) par rapport au bloc (3) sont modifiables,
    dans lequel des éléments de réglage hydrauliques (8, 9), de préférence des capsules hydrauliques, sont prévus pour provoquer la modification de l'écartement (10) entre les cylindres pendant le processus de laminage, caractérisé en ce que les éléments de réglage hydrauliques (8, 9) sont également prévus pour provoquer l'orientation de l'axe de laminage (1a, 2a) d'au moins un des cylindres de travail (1, 2) par rapport au bloc (3) pendant le processus de laminage.
  2. Laminoir à cylindres obliques (11) selon la revendication 1, caractérisé en ce que les éléments de réglage hydrauliques (8, 9) sont en mesure de compenser une dilatation de la cage de laminoir pendant le fonctionnement du laminoir en modifiant le réglage des cylindres de travail (1, 2) l'un par rapport à l'autre, de préférence aussi en orientant l'axe de cylindre (1a, 2a) d'au moins l'un des cylindres de travail (1, 2) par rapport au bloc (3).
  3. Laminoir à cylindres obliques (11) selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu, en plus des cylindres de travail (1, 2), des disques délimitant latéralement l'écartement (10) entre les cylindres, appelés disques de cisaillement et/ou patins de guidage, qui sont de préférence également reliés à des éléments de réglage hydrauliques.
  4. Laminoir à cylindres obliques (11) selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu en outre un instrument de mesure permettant de déterminer une modification de la géométrie de l'écartement entre les cylindres et/ou un déplacement de l'écartement entre les cylindres et/ou la position des cylindres de travail (1, 2) dans l'espace, ainsi que leur modification pendant le fonctionnement du laminoir.
  5. Laminoir à cylindres obliques (11) selon la revendication 4, caractérisé en ce que l'instrument de mesure est relié à une unité d'évaluation qui est appropriée pour déterminer les grandeurs perturbatrices.
  6. Laminoir à cylindres obliques (11) selon l'une des revendications précédentes, caractérisé en ce qu'il est prévu une unité de commande et de régulation (HGC) qui est reliée aux éléments de réglage hydrauliques (8, 9) de telle sorte que les modifications préalablement déterminées de la géométrie de l'écartement entre les cylindres et/ou du déplacement de l'écartement entre les cylindres et/ou de la position des cylindres de travail (1, 2) dans l'espace, ainsi que leur modification pendant le fonctionnement du laminoir par modification de l'écartement (10) entre les cylindres, de préférence également de l'orientation de l'axe (1a, 1b) d'au moins l'un des cylindres de travail (1, 2) par rapport au bloc (3), peuvent être contrecarrées.
  7. Laminoir à cylindres obliques (11) selon la revendication 6, caractérisé en ce que l'unité de commande et de régulation (HGC) est reliée à l'unité d'évaluation selon la revendication 5.
  8. Laminoir à cylindres obliques (11) selon l'une des revendications 4 à 7, caractérisé en ce que l'instrument de mesure comporte une unité d'acquisition d'image optique.
  9. Laminoir à cylindres obliques (11) selon l'une des revendications 4 à 8, caractérisé en ce que l'instrument de mesure est en mesure de détecter un élément d'image (MM1, MM2) relié à la cage de laminoir, de préférence un ou plusieurs éléments d'image (MM1, MM2) reliés aux éléments de réglage (8, 9) pour les cylindres de travail (1, 2), ainsi que de déterminer son ou ses changements de position et/ou de forme.
  10. Laminoir à cylindres obliques (11) selon la revendication 9, caractérisé en ce que ledit au moins un élément d'image (MM1, MM2) est un corps lumineux actif.
  11. Laminoir à cylindres obliques (11) selon l'une des revendications 8 ou 9, caractérisé en ce que l'élément d'image (MM1, MM2) est circulaire avec un diamètre défini, ou carré ou rectangulaire avec des dimensions diagonales connues, ou ovale avec une forme définie.
  12. Laminoir à cylindres obliques (11) selon les revendications précédentes, caractérisé en ce que la position du mandrin (5) à l'intérieur de l'écartement (10) entre les cylindres est modifiable.
  13. Procédé de fabrication d'un bloc creux à partir d'un bloc (3) au moyen d'un laminoir à cylindres obliques (11) pour le laminage d'un bloc (3) sur un mandrin (5), dans lequel le laminoir à cylindres obliques (11) comprend une pluralité de cylindres de travail (1, 2) qui exercent chacun une force de laminage orientée sensiblement radialement sur le bloc (3), dans lequel les cylindres de travail (1, 2) sont supportés dans une cage de laminoir et l'écartement (10) entre les cylindres de travail (1, 2) et l'orientation de l'axe (1a, 2a) d'au moins un des cylindres de travail (1, 2) par rapport au bloc (3) sont modifiables,
    dans lequel des éléments de réglage hydrauliques (8, 9), de préférence des capsules hydrauliques, modifient l'écartement (10) entre les cylindres pendant le processus de laminage,
    caractérisé en ce que les éléments de réglage hydrauliques (8, 9) modifient également l'orientation de l'axe de laminage d'au moins un des cylindres de travail par rapport au bloc pendant le processus de laminage.
  14. Procédé selon la revendication 13, caractérisé en ce que la modification de l'écartement (10) entre les cylindres, de préférence également l'orientation de l'axe (1a, 2a) d'au moins l'un des cylindres de travail (1, 2) par rapport au bloc (3), est effectuée lorsque des modifications de la géométrie de l'écartement entre les cylindres et/ou du déplacement de l'écartement entre les cylindres et/ou de la position des cylindres de travail (1, 2) dans l'espace, ainsi que leur modification pendant le fonctionnement du laminoir, mesurées au préalable par une unité d'évaluation au moyen d'un instrument de mesure, ont été déterminées et classées comme grandeurs perturbatrices.
  15. Procédé selon la revendication 14, caractérisé en ce qu'une unité de commande et de régulation (HGC) est reliée à l'unité d'évaluation et émet des signaux vers les éléments de réglage hydrauliques (8, 9) pour la compensation des grandeurs perturbatrices.
  16. Procédé selon l'une des revendications 14 ou 15, caractérisé en ce que l'unité d'évaluation est reliée à un instrument de mesure, de préférence un instrument de mesure optique disposé à distance de la cage de laminoir, en particulier un instrument de mesure comportant une unité d'acquisition d'image optique.
  17. Procédé selon la revendication 16, caractérisé en ce que l'instrument de mesure détecte un élément d'image relié à la cage de laminoir, de préférence un ou plusieurs éléments d'image (MM1, MM2) reliés aux éléments de réglage (8, 9) pour les cylindres de travail (1, 2), et détermine son ou ses changements de position et/ou de forme pendant le processus de laminage.
  18. Procédé selon l'une quelconque des revendications 14 à 17, caractérisé en ce que la position et/ou l'orientation du mandrin (5) à l'intérieur de l'écartement (10) entre les cylindres est modifiée pendant le processus de laminage pour compenser des grandeurs perturbatrices déterminées au préalable.
  19. Procédé selon l'une des revendications 13 à 18, caractérisé en ce qu'il est mis en œuvre à l'aide d'un laminoir à cylindres obliques (11) selon l'une quelconque des revendications 1 à 12.
EP19719287.5A 2018-04-27 2019-04-24 Laminoir à cylindres obliques à ajustement hydraulique des cylindres Active EP3784423B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018003434.9A DE102018003434A1 (de) 2018-04-27 2018-04-27 Schrägwalzwerk mit hydraulischer Walzenanstellung
PCT/EP2019/060458 WO2019206958A1 (fr) 2018-04-27 2019-04-24 Laminoir à cylindres obliques à ajustement hydraulique des cylindres

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EP3784423A1 EP3784423A1 (fr) 2021-03-03
EP3784423B1 true EP3784423B1 (fr) 2022-09-14

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EP19719287.5A Active EP3784423B1 (fr) 2018-04-27 2019-04-24 Laminoir à cylindres obliques à ajustement hydraulique des cylindres

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CN (1) CN112236242A (fr)
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JP2021519697A (ja) 2021-08-12
CN112236242A (zh) 2021-01-15
RU2758509C1 (ru) 2021-10-29
JP7209013B2 (ja) 2023-01-19
ES2932865T3 (es) 2023-01-27
DE102018003434A1 (de) 2019-10-31
US20210229147A1 (en) 2021-07-29
EP3784423A1 (fr) 2021-03-03
WO2019206958A1 (fr) 2019-10-31
US11511327B2 (en) 2022-11-29

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