EP1896200B1 - Procede et dispositif pour influencer de façon ciblee la geometrie d'une ebauche de feuillard dans un train ebaucheur - Google Patents

Procede et dispositif pour influencer de façon ciblee la geometrie d'une ebauche de feuillard dans un train ebaucheur Download PDF

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Publication number
EP1896200B1
EP1896200B1 EP06742867A EP06742867A EP1896200B1 EP 1896200 B1 EP1896200 B1 EP 1896200B1 EP 06742867 A EP06742867 A EP 06742867A EP 06742867 A EP06742867 A EP 06742867A EP 1896200 B1 EP1896200 B1 EP 1896200B1
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EP
European Patent Office
Prior art keywords
rolling
regulation
force
stand
lateral guides
Prior art date
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Application number
EP06742867A
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German (de)
English (en)
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EP1896200A1 (fr
Inventor
Olaf Norman Jepsen
Heinz-Adolf MÜLLER
Joachim Immekus
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SMS Siemag AG
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SMS Siemag AG
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Publication of EP1896200A1 publication Critical patent/EP1896200A1/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
    • B21B37/28—Control of flatness or profile during rolling of strip, sheets or plates
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2263/00—Shape of product
    • B21B2263/02—Profile, e.g. of plate, hot strip, sections
    • 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
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device
    • 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

Definitions

  • the invention relates to a method and an apparatus for hot rolling in a hot strip mill or in Steckel streets, wherein in one or more roughing stands slabs are rolled out into pre-bands.
  • the resulting pre-bands should be straight, d. H. they should have little sag and they should not have a thickness wedge over the bandwidth.
  • the roughing scaffolding not only has the task of preserving the pre-strip geometry, but also of improving it in a targeted manner, since the slabs entering the scaffolding can already be wedge-shaped or sawed. A change in the Vorbandgeometrie is possible, especially in the first stitches, since the slab thickness in relation to the width is still relatively large and thus a material cross flow in the nip is possible.
  • a device for controlling the position of the tape run, in particular during finish rolling is known in which arranged next to the rolled strip guide rails bending bars with guide rollers which are pressed laterally against the rolled strip.
  • the position control of these roles is superimposed by a pressure control, which causes a shift in the guide rails or guide rollers in the opening direction when occurring compression forces exceeding a predetermined setpoint.
  • the object is procedurally achieved with the characterizing features of claim 1, characterized in that for the targeted influencing the Vorbandgeometrie at least one roughing stand by appropriate regulations a dynamic employment in the roughing stand with fast and powerful side guides before and behind the roughing stand are linked together so that in one or more stitches targeted, reversing or in continuous operation, a säblige or wedged slab is transformed into a straight and wedge-free Vorband.
  • Advantageous embodiments are specified in the subclaims.
  • the inventive influence on the Vorbandgeometrie is carried out with the help of employment in the horizontal frame and the two adjustable side guides in front of and behind the framework.
  • the employment in the horizontal framework ensures a constant strip thickness over the bandwidth (no thickness wedge).
  • the appointment is with the pivot to control RAC (R oll A lignment C ontrol), which was not used for roughing stands previously regulated so that the nip remain parallel even if emanating from the band interference.
  • Disturbances are mainly an incoming thickness wedge over the bandwidth, temperature differences across the bandwidth, off-center position of the strip in the nip and uneven tension distribution across the bandwidth on the inlet side and the outlet side.
  • the principle of the swivel control is that the differential rolling force is measured and a swivel value is calculated by the swivel control. This is then used in each case in half as additional setpoint for the separate position controls the drive and operating side of the scaffold. For the employment of the contact forces by the hydraulic cylinder is then moved accordingly. In principle, the swivel control compensates for the skeletal strain, which arises due to the differential forces.
  • the task of the side guides is to prevent curving or twisting of the band (saber formation).
  • the side guides on each side are kept parallel and at the same distance from the center of the frame.
  • the synchronization of the opposite rulers of a side guide is realized mechanically and the employment carried out with electric or hydraulic drive.
  • hydraulically driven lateral guides are best suited, since hydraulic drives are very dynamic and, in addition to regulating the position, also allow force control in order to keep the belt straight.
  • the position control keeps the side guides at a distance that is slightly greater than the bandwidth and, for example, at the inlet side, the bandwidth is plus 10 mm and at the outlet side the bandwidth is plus 40 mm.
  • Position monitoring increases the force setpoint if the side guides want to escape.
  • FIG. 1 is the part of the inventive combination of regulations shown, which relates to the roll adjustment for the horizontal rollers of the roughing stand and that the control scheme of a swivel control RAC.
  • back-up rolls 3 and slab 4 shown Vorgerüst 1 cylinder forces F CAS , F CBS , applied to the drive side AS and on the operating side BS by means arranged on the bearing of the upper support roller 3 cylinder cylinder 15 and the resulting forces during rolling continuously measured at the lower bearing support surface of the support rollers.
  • the differential rolling force .DELTA.F LC is determined from the obtained force measured values F LcAS and F LcBS and fed together with a reference value .DELTA.F REF to the differential rolling force of the swivel control RAC 20 and a reference swivel value .DELTA.S RAC is calculated here.
  • This pivotal value .DELTA.S RAC is then used in half as additional setpoint together with the reference position S REF for the separate position controls 25 of the drive side AS and the operating side BS of the upper support roller 3, the employment then laterally engages the hydraulic cylinders 15.
  • FIG. 2 shows a roughing stand with back-up rolls 3 and work rolls 2 in a plan view.
  • adjusting devices 18 with hydraulic drive.
  • These adjusting devices 18 consist, as in the circuit diagram of Fig. 3 can be seen from a common hydraulic unit 11 (hydraulic pump), piston-cylinder units 12, control valves 13 and various hydraulic lines 10.
  • measuring devices for determining the piston position 14 and for determining the hydraulic pressure 19 are present.
  • the distance of the side guides 8 is widened wedge-shaped at its front end.
  • the two inventively simultaneously performed regulations are shown schematically in their effect.
  • the incoming in the rolling direction 7 in the rolling mill slab 4 (the rolling stand is symbolized only by the work roll 2) contains a designated over the slab width with h 0 wedge thickness profile with the drive side AS towards increasing thickness. Due to the rolling process, the wedge-shaped thickness profile was eliminated and a pre-strip with the thickness profile h 1 was produced.
  • the case applied by the work rolls 2 rolling force F WAS was on the drive side while greater than the rolling force F WBS on the operating side, whereby a material transverse flow in the direction of arrow 6 from the drive side to the operating side.
  • the incoming slab 4 are laterally supported by the side guides 8 and the outgoing pre-strip 5 by the side guides 9.
  • the supporting forces F 1 and F 2 in front of and behind the roll stand generate in response the tension profile ⁇ 0 in the incoming slab 4 and the tension profile ⁇ 1 in the outgoing sliver 5.
  • These tension profiles ⁇ 0 , ⁇ 1 act on the roll gap and allow the material transverse flow 6, which allows the correction of the geometric error of the slab.
  • FIG. 5 are the options described above, the coupling of the employment of the rollers and the side guides according to the invention with the aim to limit the load on the control systems and to distribute the correction of the slab geometry on several stitches, shown schematically.
  • the invention is not limited to the illustrated embodiments, but, for example, according to the type of used Vorbandgerüste or drives used for the side guides variable if the inventive measure of linking a pivoting control RAC of the rollers with the mechanical employment of side guides for the rolling continue underlying.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Details Of Garments (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Control Of Metal Rolling (AREA)

Claims (10)

  1. Procédé pour le laminage à chaud d'un produit à laminer dans un train de laminage de feuillard à chaud ou dans un train de type "Steckel", dans lequel pour la régulation du tracé du produit à laminer les cylindres d'au moins une cage de laminage sont pivotés et on exerce une pression de pressage latérale contre le produit à laminer, caractérisé en ce que, pour influencer de manière ciblée la géométrie du feuillard précurseur lors du laminage de brames (4) pour réaliser des ébauches de feuillard (5) sur au moins une cage préliminaire (1), on exécute de façon chaînée
    - une régulation de pivotement RAC (20) pour l'approche dynamique dans la cage préliminaire, et
    - une régulation de position (35) et de force (45) pour des guidages latéraux rapides et puissants (8, 9) agencés avant et après la cage préliminaire (1), pour la commande desquels on utilise la position des pistons ainsi que la pression dans des unités à piston-et-cylindre (12) qui servent à l'approche des guidages latéraux (8, 9),
    de telle manière que l'on met en forme de façon ciblée en une ou en plusieurs passes, en fonctionnement réversible ou en fonctionnement continu, une brame cintrée ou une brames en coin (4) en un feuillard précurseur (5) rectiligne et dépourvu de formation conique.
  2. Procédé selon la revendication 1, caractérisé en ce que l'approche dynamique est exécutée au moyen de la régulation de pivotement (RAC (Roll Alignment Control)) (20), dans laquelle on calcule, à partir d'une force de laminage différentielle mesurée (ΔFLC) et d'une valeur de référence de la force de laminage différentielle (ΔFREF) en tenant compte d'une valeur de pivotement maximum (ΔSRACMAX, une valeur de pivotement de référence (ΔSRAC), et celle-ci est utilisée respectivement pour moitié à titre de valeur de consigne additionnelle (Reference Position (SREF)) pour les régulations de position séparées (25) du côté entraînement (AS) et du côté manipulation (BS) de la cage préliminaire (1).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que les guidages latéraux (8, 9) agencés avant et après la cage préliminaire (1) sont tenus par les unités à piston-et-cylindres (12) de chaque côté parallèlement et à la même distance du milieu de la cage, et dans lequel outre la régulation de position (35) on exécute également une régulation de force (45).
  4. Procédé selon la revendication 3, caractérisé en ce que la régulation de position (35) des guidages latéraux (8, 9) est exécutée de telle façon que la distance latérale des guidages latéraux (8, 9) est légèrement plus grande et de façon différente que la largeur du feuillard, par exemple la largeur du feuillard plus 10 mm du côté entrée, et la largeur du feuillard plus 40 mm du côté sortie.
  5. Procédé selon la revendication 3 ou 4, caractérisé en ce que les guidages latéraux (8, 9) sont pressés avec une force définie (F1, F2) latéralement contre la brame (4) respectivement contre le feuillard précurseur (5) et sont ici protégés à l'encontre d'une surcharge, au moyen de la régulation de force (45).
  6. Procédé selon la revendication 5, caractérisé en ce que, lors d'un écartement éventuel des guidages latéraux (8, 9), la valeur de consigne de force (FSACT) de la régulation de force (45) est augmentée de façon correspondante au moyen d'un système de surveillance de position.
  7. Procédé selon l'une ou plusieurs des revendications 1 à 6, caractérisé en ce que la régulation de pivotement (20) et les régulations (35, 45) des guidages latéraux (8, 9) sont couplées les unes avec les autres de telle façon que lorsque le produit à laminer entrant dans la cage préliminaire (1) présente des erreurs géométriques extrêmes, il est possible d'exécuter en plusieurs passes la modification de géométrie souhaitée.
  8. Procédé selon l'une ou plusieurs des revendications 1 à 7, caractérisé en ce que, pour la répartition de la correction de la géométrie de brame sur plusieurs passes, les valeurs actuelles d'une cage de laminage pour
    - la force de laminage différentielle ΔFLC
    - la position différentielle de la valeur de pivotement différentielle SSACT
    - les positions des guidages latéraux SSACT
    - les forces de pression des guidages latéraux FSACT sont injectées dans une unité de régulation de couplage (50), de laquelle on retire alors les valeurs imposées à utiliser dans la cage de laminage successive :
    - une valeur de référence de la force de laminage différentielle ΔFREF
    - une valeur de pivotement maximum ΔSRACMAX
    - les valeurs de référence de position des guidages latéraux SSREF
    - les valeurs de référence de force des guidages latéraux FSREF.
  9. Appareil pour le laminage à chaud d'un produit à laminer dans un train de laminage à chaud traditionnel ou dans un train de type "Steckel", dans lequel au moins une cage de laminage est réalisée avec des cylindres capables de pivoter, et comprend, sur le côté d'entrée du produit à laminer, un dispositif au moyen duquel il est possible d'exercer une pression de pressage latérale contre le produit à laminer, en particulier pour la mise en oeuvre du procédé selon l'une ou plusieurs des revendications 1 à 8,
    caractérisé en ce que, pour le laminage à chaud de brames (4) pour donner des feuillards précurseurs (5), au moins une cage préliminaire (1)
    - est réalisée avec une régulation de pivotement (20), et
    - sur le côté entrée et sur le côté sortie de la cage préliminaire (1), il est prévu des guidages latéraux (8, 9), susceptibles d'être approchés par voie hydraulique au moyen d'unités à piston-et-cylindre (12), avec une régulation de position (35) et de force (45),
    telles que la régulation de pivotement (20) de la cage préliminaire (1) et la régulation de position (35) et de force (45) sont chaînées l'une à l'autre par des techniques de métrologie et de régulation de telle façon qu'une brame cintrée ou en forme de coin (4) est mise en forme de façon ciblée en une ou plusieurs passes, en fonctionnement réversible ou en fonctionnement continu, pour donner un feuillard précurseur (5) rectiligne et dépourvu de formation conique.
  10. Appareil selon la revendication 9, caractérisé en ce que la distance des guidages latéraux (8) est élargie en forme de coin à leur extrémité antérieure, c'est-à-dire du côté entrée des brames.
EP06742867A 2005-05-11 2006-05-10 Procede et dispositif pour influencer de façon ciblee la geometrie d'une ebauche de feuillard dans un train ebaucheur Active EP1896200B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005021769A DE102005021769A1 (de) 2005-05-11 2005-05-11 Verfahren und Vorrichtung zur gezielten Beeinflussung der Vorbandgeometrie in einem Vorgerüst
PCT/EP2006/004392 WO2006119984A1 (fr) 2005-05-11 2006-05-10 Procede et dispositif pour influencer de façon ciblee la geometrie d'une ebauche de feuillard dans un train ebaucheur

Publications (2)

Publication Number Publication Date
EP1896200A1 EP1896200A1 (fr) 2008-03-12
EP1896200B1 true EP1896200B1 (fr) 2011-07-20

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Country Status (17)

Country Link
US (1) US8429943B2 (fr)
EP (1) EP1896200B1 (fr)
JP (1) JP5253153B2 (fr)
KR (1) KR101138726B1 (fr)
CN (1) CN101175582B (fr)
AT (1) ATE516897T1 (fr)
AU (1) AU2006245966B2 (fr)
BR (1) BRPI0607449A8 (fr)
CA (1) CA2604503C (fr)
DE (1) DE102005021769A1 (fr)
ES (1) ES2367139T3 (fr)
MX (1) MX2007014109A (fr)
RU (1) RU2368443C2 (fr)
TW (1) TWI358332B (fr)
UA (1) UA91533C2 (fr)
WO (1) WO2006119984A1 (fr)
ZA (1) ZA200705219B (fr)

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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
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Publication number Publication date
CN101175582A (zh) 2008-05-07
ES2367139T3 (es) 2011-10-28
BRPI0607449A2 (pt) 2009-09-01
US8429943B2 (en) 2013-04-30
TW200702078A (en) 2007-01-16
JP5253153B2 (ja) 2013-07-31
JP2008540133A (ja) 2008-11-20
UA91533C2 (ru) 2010-08-10
CA2604503A1 (fr) 2006-11-16
KR101138726B1 (ko) 2012-04-24
TWI358332B (en) 2012-02-21
KR20080005350A (ko) 2008-01-11
AU2006245966A2 (en) 2008-07-03
ZA200705219B (en) 2008-05-28
MX2007014109A (es) 2008-02-05
WO2006119984A1 (fr) 2006-11-16
CN101175582B (zh) 2011-04-13
CA2604503C (fr) 2012-11-06
US20090044587A1 (en) 2009-02-19
DE102005021769A1 (de) 2006-11-23
ATE516897T1 (de) 2011-08-15
RU2007126472A (ru) 2009-01-20
AU2006245966B2 (en) 2010-09-30
EP1896200A1 (fr) 2008-03-12
BRPI0607449A8 (pt) 2016-05-03
RU2368443C2 (ru) 2009-09-27
AU2006245966A1 (en) 2006-11-16

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