EP2864062B1 - Procédé d'influence ciblée de la géométrie d'un produit à laminer - Google Patents

Procédé d'influence ciblée de la géométrie d'un produit à laminer Download PDF

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Publication number
EP2864062B1
EP2864062B1 EP13729694.3A EP13729694A EP2864062B1 EP 2864062 B1 EP2864062 B1 EP 2864062B1 EP 13729694 A EP13729694 A EP 13729694A EP 2864062 B1 EP2864062 B1 EP 2864062B1
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EP
European Patent Office
Prior art keywords
force
processing
rolling
loop
controlled
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
EP13729694.3A
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German (de)
English (en)
Other versions
EP2864062A1 (fr
Inventor
Matthias Kurz
Birger Schmidt
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
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 Germany GmbH filed Critical Primetals Technologies Germany GmbH
Priority to EP13729694.3A priority Critical patent/EP2864062B1/fr
Priority to PL13729694T priority patent/PL2864062T3/pl
Publication of EP2864062A1 publication Critical patent/EP2864062A1/fr
Application granted granted Critical
Publication of EP2864062B1 publication Critical patent/EP2864062B1/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
    • B21B37/58—Roll-force control; Roll-gap control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B13/00—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories
    • B21B13/06—Metal-rolling stands, i.e. an assembly composed of a stand frame, rolls, and accessories with axes of rolls arranged vertically, e.g. edgers
    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2273/00—Path parameters
    • B21B2273/04—Lateral deviation, meandering, camber of product
    • 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

Definitions

  • the invention relates to a method for selectively influencing the geometry of a rolling stock, wherein the rolling stock is transferred from an initial state by rolling by means of a roll stand by means of at least one processing unit in an intermediate or final state.
  • the invention further relates to a control and / or regulating device, a machine-readable program code and a data carrier.
  • hot rolling mills In a rolling mill all the equipment needed for the production of rolled products can be combined. Depending on the type of forming hot and cold rolling mills are differentiated.
  • slabs or ingots, usually called slabs for short, are processed to hot strip.
  • This hot forming is one of the methods that follows the original forming (ingot casting, continuous casting).
  • the rolling stock is heated to temperatures up to 1350 ° C and preferably reduced above its recrystallization temperature in a rolling nip of the rolling mill by pressure to a predetermined thickness.
  • the rolling stock to be rolled in a roughing train has a thickness progression across its width.
  • the aim is usually to produce by means of rolling bands, on the one hand at the end of the finishing line have a substantially symmetrical to the band center thickness across the width, ie are free of wedges, and on the other hand have the least possible bending over the length of the rolling stock, ie are saber-free.
  • a rolling stock is to be rolled, which is already wedge-shaped in the first rolling within the hot rolling line.
  • the wedging of the rolling stock usually results from the casting process and the subsequent cooling and further processing, in particular halving, of the cast slabs.
  • a wedge-shaped rolling stock is to be rolled out into a slab having a substantially rectangular cross-section, the volume flow on the "thicker" side of the slab results in a greater flow of material, in particular longitudinal flow, than on the "thin" side of the slab.
  • the consequence of this different material flow in the longitudinal direction of the rolling stock is the formation of a saber shape or a saber.
  • a saber-shaped rolling stock can lead to difficulties in subsequent processing of the rolling stock.
  • the formation of the saber can be so strong that further processing of the rolling stock is impossible.
  • the invention has for its object to provide an improvement in the geometry of a rolling stock, in particular when processing asymmetric rolling stock.
  • the invention is based on the recognition that an asymmetrical course of the rolling stock can be counteracted particularly successfully by means of a suitably chosen force with which the processing unit acts on the rolling stock.
  • This force is defined by the desired force, while the desired force is a constant force or alternatively a variable over time force curve.
  • the previously applied position control of the at least one processing unit is unsuitable for the operation of the processing unit. Instead, the processing unit exerts a defined transverse force on the rolling stock through the power regulation, which influences the curvature of the material. This makes it possible that by means of the force control of the at least one processing unit is processed in terms of its thickness and / or width asymmetric rolling, so that the asymmetry is eliminated or at least largely reduced.
  • the force control can also be done with subordinate position control, ie the position is in a second, superimposed Control circuit used to regulate the setpoint force.
  • Such cascade controls are known in the art.
  • the tracking of the position-controlled processing unit is implemented by control technology, by the center between the two processing units is not moved, but in particular always remains in the same place.
  • the midpoint between the two processing units expediently deviates from a center line of the roll stand, but it can also lie on the center line of the roll stand.
  • the center between the processing units and a distance between the processing units are used for the control of the processing units.
  • the center between the processing units is specified and the force control of one of the processing units via the adjustment of the distance between the processing units.
  • This type of force control in which the center and the distance between the two processing units are the control variables, is particularly easy to implement. In particular, since the center remains constant, only the distance between the changed both processing units. If this shifts the force-controlled processing unit, the position-controlled processing unit is tracked to compensate for a possibly much higher target force.
  • the at least one processing unit is initially moved to the rolling stock in a position-controlled manner, and when the desired force is reached by the reaction force acting on the processing unit, the system is switched over to the force control. In the case of two parallel processing units positioned on both sides of the rolling stock, this means that initially the distance between the processing units is reduced in a position-controlled manner. As the processing units move toward one another, the reaction force exerted by the rolling stock on the processing units also increases. If the reaction force acting on the processing unit on the "thin" side of the rolling stock or on the side with the lower material flow, has reached the desired force, then the position control of this processing unit is switched to force control, so that the operations described above are performed ,
  • the wedging and / or saberiness of the rolling stock, in particular in the initial state is measured and on this basis the setpoint force is determined for the force regulation. If the desired force is determined and the center is known, the distance between the processing units is calculated and fed as a control variable to the processing units.
  • the geometry of the rolling stock may change such that the wedge or saber change their side or direction.
  • a change in the position of the wedging and / or the direction of the saberiness of the rolling stock is a change between the force-controlled and the position-controlled Processing unit. This means that when the saber shape changes its direction during the rolling process, the previously force-controlled processing unit is operated position-controlled from the point of inflection and the previously position-controlled processing unit is now operated with force control.
  • control and / or regulating device for selectively influencing the geometry of a rolling stock, with a machine-readable program code containing control commands and / or control commands, the control and / or regulating device for performing the method according to one of cause the above.
  • a machine-readable program code for a control and / or regulating device for selectively influencing the geometry of a rolling stock which contains control commands and / or control commands, the control and / or regulating device for performing the method according to one of cause the above.
  • a horizontal rolling stand 2 in particular a roughing stand, shown, by means of which a rolling stock 4, in particular a pre-strip, is rolled, so that the rolling stock 4 is transferred from an initial state to an intermediate or final state.
  • the rolling stand 2 has a drive side DS and an operating side OS.
  • the rolling mill 2 are also assigned two processing units 6, 8, which are positioned on both sides of the rolling stock 4, as seen from FIG. 2 seen.
  • S the distance between the processing units 6, 8.
  • a center line 10 of the roll stand 2 a center line 12 between the processing units 6, 8, and a center 14 between the processing units 6, 8, which lies on the center line 12 shown.
  • ⁇ s also denotes an offset between the two center lines 10 and 12.
  • the rolling stand 2 is operated in the embodiment shown in particular reversible, so that the rolling stock 4 changes its rolling direction 16 several times during operation.
  • the processing units 6, 8 in the rolling direction 16 downstream of the rolling mill 2.
  • the function of the processing units 6, 8 is to suppress an asymmetrical geometry of the rolled rolled stock 4.
  • one of the processing units 6, 8 in the embodiment of FIG. 2 the processing unit 6) is operated with force control, which is indicated by the desired force signal F.
  • the second processing unit 8 is operated position-controlled, indicated by the position signal P. the control of both processing units 6, 8 assumes a control device 18, the in FIG. 2 is shown symbolically.
  • the force-controlled machining unit 6 acts with a desired force F, which is based on the geometry of the rolling stock 4 is determined, the wedge or the saber shape opposite. In FIG. 2 merely contacts the processing unit 6, the rolling stock 4, the second processing unit 8 is moved at a distance from the rolling stock 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Moulding By Coating Moulds (AREA)

Claims (10)

  1. Procédé destiné à influencer de manière ciblée la géométrie d'un produit à laminer (4), dans lequel on fait passer le produit à laminer (4) d'un état initial à un état intermédiaire ou final par laminage à l'aide d'une cage de laminoir (2) au moyen d'au moins une unité de traitement (6), en particulier sous la forme d'une cage verticale, d'un guidage latéral ou d'un dispositif d'application de force transversale, dans lequel la au moins une unité de traitement (6) est exploitée avec régulation de force en se basant sur une force de consigne (F), dans lequel deux unités de traitement (6, 8) sont prévues des deux côtés du produit à laminer (4), dans lequel une unité de traitement (6) est exploitée avec régulation de force et l'autre unité de traitement (8) est exploitée avec régulation de position,
    caractérisé en ce que l'unité de traitement (8) à régulation de position est associée à l'unité de traitement à régulation de force de telle manière qu'un point médian (14) reste toujours dans une position spécifiée entre les deux unités de traitement (6, 8).
  2. Procédé selon la revendication 1,
    caractérisé en ce que le point médian (14) entre les unités de traitement (6, 8) ainsi qu'un écartement (S) entre les unités de traitement (6, 8) sont utilisés pour la régulation des unités de traitement (6, 8).
  3. Procédé selon la revendication 2,
    caractérisé en ce que le point médian (14) entre les unités de traitement (6, 8) est spécifié et la régulation de force d'une des unités de traitement (6) a lieu grâce à l'ajustement de l'écartement (S) entre les unités de traitement (6, 8).
  4. Procédé selon l'une quelconque des revendications 1 à 3,
    caractérié en ce que le point médian (14) s'écarte d'une ligne médiane (10) de la cage de laminoir (2).
  5. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que la au moins une unité de traitement (6) est d'abord passée sur le produit à laminer (4) avec régulation de position et, à l'atteinte de la force de consigne (K), elle est commutée sur la régulation de force grâce à la force de réaction agissant sur l'unité de traitement.
  6. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce qu'une conicité et/ou une convexité du produit à laminer (4) est mesurée et la force de consigne (F) destinée à la régulation de force est déterminée en se basant sur ladite mesure.
  7. Procédé selon l'une quelconque des revendications précédentes,
    caractérisé en ce que, lors d'une modification de la position de la conicité et/ou la direction de la convexité du produit à laminer (4), un échange a lieu entre l'unité de traitement à régulation de force et l'unité de traitement à régulation de position (6, 8).
  8. Appareil de commande et/ou régulation (18) destiné à influencer de manière ciblée la géométrie d'un produit à laminer (4), avec un code informatique pouvant être lu par une machine, qui contient des ordres de commande et/ou des ordres de régulation qui entrainent une mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 7 par l'appareil de commande et/ou régulation (18).
  9. Code informatique pouvant être lu par une machine pour un appareil de commande et/ou régulation (18) destiné à influencer de manière ciblée la géométrie d'un produit à laminer, qui contient des ordres de commande et/ou des ordres de régulation qui entrainent une mise en oeuvre du procédé selon l'une quelconque des revendications 1 à 7 par l'appareil de commande et/ou régulation (18).
  10. Support de données avec un code informatique selon la revendication 9, pouvant être lu par une machine et mémorisé sur ledit support.
EP13729694.3A 2012-07-27 2013-06-13 Procédé d'influence ciblée de la géométrie d'un produit à laminer Active EP2864062B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP13729694.3A EP2864062B1 (fr) 2012-07-27 2013-06-13 Procédé d'influence ciblée de la géométrie d'un produit à laminer
PL13729694T PL2864062T3 (pl) 2012-07-27 2013-06-13 Sposób celowanego oddziaływania na geometrię materiału walcowanego

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP12178145.4A EP2689863A1 (fr) 2012-07-27 2012-07-27 Procédé d'influence ciblée de la géométrie d'un produit à laminer
EP13729694.3A EP2864062B1 (fr) 2012-07-27 2013-06-13 Procédé d'influence ciblée de la géométrie d'un produit à laminer
PCT/EP2013/062219 WO2014016045A1 (fr) 2012-07-27 2013-06-13 Procédé pour agir rationnellement sur la géométrie d'un produit laminé

Publications (2)

Publication Number Publication Date
EP2864062A1 EP2864062A1 (fr) 2015-04-29
EP2864062B1 true EP2864062B1 (fr) 2016-09-28

Family

ID=48652053

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12178145.4A Withdrawn EP2689863A1 (fr) 2012-07-27 2012-07-27 Procédé d'influence ciblée de la géométrie d'un produit à laminer
EP13729694.3A Active EP2864062B1 (fr) 2012-07-27 2013-06-13 Procédé d'influence ciblée de la géométrie d'un produit à laminer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12178145.4A Withdrawn EP2689863A1 (fr) 2012-07-27 2012-07-27 Procédé d'influence ciblée de la géométrie d'un produit à laminer

Country Status (7)

Country Link
US (1) US9776229B2 (fr)
EP (2) EP2689863A1 (fr)
CN (1) CN104507592B (fr)
BR (1) BR112015001671A2 (fr)
PL (1) PL2864062T3 (fr)
RU (1) RU2647417C2 (fr)
WO (1) WO2014016045A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2689863A1 (fr) 2012-07-27 2014-01-29 Siemens Aktiengesellschaft Procédé d'influence ciblée de la géométrie d'un produit à laminer
EP2910316A1 (fr) * 2014-02-21 2015-08-26 Primetals Technologies Germany GmbH Précommande simple du pas de filetage d'un ébaucheur
EP2998040A1 (fr) * 2014-09-17 2016-03-23 Primetals Technologies Germany GmbH Réglage de largeur d'une ligne de fabrication
DE102020213239A1 (de) * 2020-02-06 2021-08-12 Sms Group Gmbh Verfahren zur automatischen Kalibrierung von Vertikalrollen eines Vertikalwalzgerüsts sowie Kalibrieranordnung zur Durchführung des Verfahrens

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EP2689863A1 (fr) 2012-07-27 2014-01-29 Siemens Aktiengesellschaft Procédé d'influence ciblée de la géométrie d'un produit à laminer

Also Published As

Publication number Publication date
RU2015103124A (ru) 2016-09-20
US20150231679A1 (en) 2015-08-20
EP2864062A1 (fr) 2015-04-29
BR112015001671A2 (pt) 2017-07-04
PL2864062T3 (pl) 2017-04-28
CN104507592B (zh) 2016-08-24
RU2647417C2 (ru) 2018-03-15
US9776229B2 (en) 2017-10-03
WO2014016045A1 (fr) 2014-01-30
CN104507592A (zh) 2015-04-08
EP2689863A1 (fr) 2014-01-29

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