EP1786577B1 - Procede de laminage d'une bande metallique - Google Patents

Procede de laminage d'une bande metallique Download PDF

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Publication number
EP1786577B1
EP1786577B1 EP05782864A EP05782864A EP1786577B1 EP 1786577 B1 EP1786577 B1 EP 1786577B1 EP 05782864 A EP05782864 A EP 05782864A EP 05782864 A EP05782864 A EP 05782864A EP 1786577 B1 EP1786577 B1 EP 1786577B1
Authority
EP
European Patent Office
Prior art keywords
metal strip
rolling
strip
roller
differential value
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.)
Revoked
Application number
EP05782864A
Other languages
German (de)
English (en)
Other versions
EP1786577A1 (fr
Inventor
Roger Lathe
Anna Lukasson
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.)
BFI VDEH Institut fuer Angewandte Forschung GmbH
Original Assignee
BFI VDEH Institut fuer Angewandte Forschung 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
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Application filed by BFI VDEH Institut fuer Angewandte Forschung GmbH filed Critical BFI VDEH Institut fuer Angewandte Forschung GmbH
Publication of EP1786577A1 publication Critical patent/EP1786577A1/fr
Application granted granted Critical
Publication of EP1786577B1 publication Critical patent/EP1786577B1/fr
Revoked legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • 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 apparatus for reducing band saber when rolling a metal strip.
  • a generic method is eg off JP-A-59118216 known.
  • band sabers This refers to lateral deviations from the straightness of the strip in the longitudinal direction.
  • the band saw can lead to process disturbances during the rolling process but also during later process steps, which has a negative effect on throughput and productivity.
  • the causes of a non-parallel position of the rolling rolls are versatile.
  • here are the different springing of the two framework stands under rolling load, an off-center position of the metal strip with respect to the roll center and different strengths of the rolling stock over the bandwidth, especially due to temperature differences of importance.
  • the invention has for its object to provide a method and an apparatus that effectively reduces the formation of a tape measure when rolling metal bands. This object is achieved by the method according to claim 1.
  • the essence of the invention is based on the assumption that, in particular, the geometry of the roll gap is responsible for the formation of a tieback.
  • the geometry of the roll gap can be changed and thus the formation of a tieback can be reduced.
  • the adjustment of the nip takes place unevenly across the width of the metal strip, i. in the longitudinal direction of the roller.
  • Under rolling mill is understood according to the invention a system of at least one rolling roll and its storage.
  • metal tape is understood to mean any shape of a metallic semifinished product (also in the raw state) whose length is greater than the width.
  • these include slabs and slabs, flat billets and wide steel, etc. understood.
  • the position of the band edge (s) can be determined by optical measuring devices.
  • the position can also be determined by means of side guides, which are in constant contact with at least one band edge and follow a transverse movement of the band edge (s).
  • the metal strip is guided on at least one side guide in front of the rolling stand and a side guide behind the rolling stand and measured the compressive forces in the side guides.
  • the geometry of the roll gap may be changed.
  • the metal strip is continuously guided on the side guide (s). This can react very quickly to changing conditions that would otherwise cause the emergence of a gangbeam. An exact control of the adjustable rolling stand is therefore possible without simultaneous thickness profile measurement.
  • continuous guidance of the metal strip on the side guide (s) is understood to mean that the edges of the metal strip abut substantially on the side guide (s) at all times and thus are in constant contact with them.
  • this should not be understood as lateral guides, which only come into contact with the deviations of the strip edges from their desired position and thus limit their deflection.
  • a particular advantage of the two-sided arrangement of side guides is that a non-constant width of the band over its length due to the simultaneous increase or decrease of the compressive forces in the two side guides, which in turn can result in the difference to zero, not disadvantageous effect.
  • the difference value can be determined, for example, by pressing the side guide (movable in the transverse direction of the metal strip) against the edge with a defined (path-dependent) contact pressure and at a movement of the band edge, the increase or decrease (difference value) of this contact force is determined.
  • An influence on the measured values by a non-constant bandwidth can be avoided in this case, for example, that this is measured in the strip running direction in front of the rolling mill and is compensated by control technology.
  • the target value for the control of the roller is a differential value of the determined compressive forces of zero.
  • a difference value from zero means that the metal band runs perfectly straight without band saber.
  • An embodiment of the invention provides for arranging at least one lateral guide with pressure force measurement on each side of the belt in front of and behind the rolling stand. By taking into account the at least four determined values for the compressive force, a bending moment can be calculated which gives a value for the control of the roller independently of the relative position of the metal strip within the guide.
  • a plurality of rolling stands or one or more rolling stands and other devices of any kind between the side guide pairs may be arranged.
  • any influence of an asymmetrical course in the calculation of the difference value can be taken into account, so that an adapted control of the roll (s) of the rolling stand can take place.
  • the side guides may be supported to compensate for corresponding movements of the strip edges, thus compensating for the differential value of the compressive force by an asymmetric progression of the strip between the side guides.
  • the side guides are designed in the form of guide rollers. These allow permanent contact with the metal strip, without causing high frictional forces and / or damage to the strip edges.
  • the method according to the invention can be used particularly advantageously during hot rolling of metal strip.
  • the corresponding device can be arranged in a roughing a hot rolling mill, since there is the crossflow obstruction due to the larger strip thickness and the higher temperature compared to the finishing line is sufficiently low.
  • the metal strip can thus be passed as saber-free as possible to the finishing mill.
  • Fig. 1 the emergence of a tieback due to a wedge-shaped roll gap is shown.
  • a metal strip 1 with a wedge-shaped thickness profile is formed over the metal strip width.
  • the invention now proposes to provide vertical guide rollers 3 which are arranged in pairs (one per side of the metal strip 1) in front of and behind the pair of rollers and are in constant contact with it by their transversal displacement of the band.
  • the pressure force exerted by the metal strip 1 on the respective guide roller 3, is determined by a measuring device, not shown.
  • the metal strip 1 rotates on both sides of the roll pair in mutually opposite directions (in the embodiment of FIGS Fig. 2 or 3 towards the operator side). This increases the force which is measured by the two operator-side guide rollers 3. To the same extent, the forces measured by the guide rollers 3 of the drive side AS decrease.
  • the geometry of the roll gap is corrected accordingly, so that a band saw, which arises due to non-parallel alignment of the rollers 2, is effectively reduced.
  • the formation of a belt and other influences by actively influencing the roll gap geometry can be influenced or reduced by the inventive device and the corresponding method.
  • Fig. 3 an embodiment of the device according to the invention is shown, which is functional to that of the Fig. 2 is identical, but has a plurality of guide rollers with force measuring devices, which are arranged uniformly on both sides of the belt and in front of and behind the pair of rolling rollers. Due to the large number of measuring points, the accuracy of the measurement and thus the influence of the tape measure can be significantly increased.
  • an improved guidance of the metal strip can be achieved by increasing the number of guide rollers.

Landscapes

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

Claims (7)

  1. Procédé pour réduire les lames de sabre lors du laminage d'un feuillard métallique (1), avec les étapes suivantes :
    - guidage du feuillard métallique (1) contre au moins un guide latéral (3) en amont et en aval d'une cage de laminoir ; et
    - mesure des forces de pression dans les guides latéraux (3) et/ou de la position des guides latéraux, afin de déterminer une valeur différentielle, et mesure, ce faisant, de la force de pression exercée sur un élément limitrophe par au moins un bord du feuillard métallique en amont et en aval d'une cage de laminoir,
    caractérisé par l'étape suivante :
    - adaptation de la géométrie de l'emprise de laminage afin de réduire le sabre du feuillard, à l'aide d'une valeur pour le couple de flexion qui s'obtient à partir de la valeur différentielle des résultats de mesure des guide(s) latéraux (3) en amont de la cage de laminoir et de la valeur différentielle des guide(s) latéraux (3) en aval de la cage de laminoir.
  2. Procédé selon la revendication 1, caractérisé par un réglage irrégulier de l'emprise de laminage dans la direction longitudinale du cylindre (2).
  3. Procédé selon la revendication 1 ou 2, caractérisé par le guidage en continu du feuillard métallique (1) contre les guides latéraux (3).
  4. Procédé selon l'une des revendications 1 à 3, caractérisé par un guidage du feuillard métallique (1) sur les deux côtés en amont et/ou en aval de la cage de laminoir.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé par une adaptation de la géométrie de l'emprise de laminage à une valeur cible de zéro pour la valeur différentielle des forces de pression.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé par l'asservissement du cylindre (2) à l'aide d'une valeur différentielle des guides latéraux (3) en amont ou en aval de la cage de laminoir, conjointement avec une détermination de l'allure du feuillard par rapport au cylindre (2).
  7. Procédé selon l'une des revendications précédentes, caractérisé par le laminage à chaud du feuillard métallique (1).
EP05782864A 2004-09-08 2005-09-08 Procede de laminage d'une bande metallique Revoked EP1786577B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004043790A DE102004043790A1 (de) 2004-09-08 2004-09-08 Verfahren und Vorrichtung zum Walzen eines Metallbands
PCT/EP2005/009627 WO2006027238A1 (fr) 2004-09-08 2005-09-08 Procede et dispositif de laminage d'une bande metallique

Publications (2)

Publication Number Publication Date
EP1786577A1 EP1786577A1 (fr) 2007-05-23
EP1786577B1 true EP1786577B1 (fr) 2009-11-04

Family

ID=35427588

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05782864A Revoked EP1786577B1 (fr) 2004-09-08 2005-09-08 Procede de laminage d'une bande metallique

Country Status (4)

Country Link
EP (1) EP1786577B1 (fr)
AT (1) ATE447447T1 (fr)
DE (2) DE102004043790A1 (fr)
WO (1) WO2006027238A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006059709A1 (de) * 2006-12-18 2008-06-19 Siemens Ag Walzverfahren für ein Band
DE102007001539A1 (de) 2007-01-10 2008-07-17 Siemens Ag Steuerverfahren für ein Walzgerüst zum Walzen eines Bandes
DE102008007247A1 (de) * 2007-09-13 2009-03-19 Siemens Aktiengesellschaft Betriebsverfahren für eine Walzstraße mit Krümmungserkennung
WO2018095717A1 (fr) 2016-11-24 2018-05-31 Primetals Technologies Germany Gmbh 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
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

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3116278A1 (de) * 1981-04-24 1982-11-11 Betriebsforschungsinstitut VDEh - Institut für angewandte Forschung GmbH, 4000 Düsseldorf Vorrichtung zum steuern der lage des bandlaufs beim walzen
JPS5945011A (ja) * 1982-09-07 1984-03-13 Ishikawajima Harima Heavy Ind Co Ltd 圧延材の蛇行防止方法及び装置
JPS59118216A (ja) * 1982-12-25 1984-07-07 Sumitomo Metal Ind Ltd 板キヤンバ制御方法
JPS59127915A (ja) * 1983-01-07 1984-07-23 Sumitomo Metal Ind Ltd 板キヤンパ制御方法
JPS59189011A (ja) * 1983-04-12 1984-10-26 Ishikawajima Harima Heavy Ind Co Ltd 圧延材の蛇行及び横曲り制御方法及びその装置
JPS59191510A (ja) * 1983-04-13 1984-10-30 Ishikawajima Harima Heavy Ind Co Ltd 圧延材の蛇行制御方法及び装置

Also Published As

Publication number Publication date
WO2006027238A1 (fr) 2006-03-16
ATE447447T1 (de) 2009-11-15
DE502005008450D1 (de) 2009-12-17
EP1786577A1 (fr) 2007-05-23
DE102004043790A1 (de) 2006-03-09

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