WO2006021324A1 - Rolling mill for rolling a metallic strip - Google Patents

Rolling mill for rolling a metallic strip Download PDF

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Publication number
WO2006021324A1
WO2006021324A1 PCT/EP2005/008686 EP2005008686W WO2006021324A1 WO 2006021324 A1 WO2006021324 A1 WO 2006021324A1 EP 2005008686 W EP2005008686 W EP 2005008686W WO 2006021324 A1 WO2006021324 A1 WO 2006021324A1
Authority
WO
WIPO (PCT)
Prior art keywords
rolling
rolling mill
roller
roll
mill according
Prior art date
Application number
PCT/EP2005/008686
Other languages
German (de)
French (fr)
Inventor
Olaf Norman Jepsen
Hans-Peter Richter
Michael Zielenbach
Original Assignee
Sms Demag Ag
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 Sms Demag Ag filed Critical Sms Demag Ag
Priority to US11/660,174 priority Critical patent/US20070261456A1/en
Priority to CA2548796A priority patent/CA2548796C/en
Priority to CN2005800286991A priority patent/CN101010154B/en
Priority to JP2007528677A priority patent/JP4976291B2/en
Priority to BRPI0506421-0A priority patent/BRPI0506421A/en
Priority to KR1020067007277A priority patent/KR101139305B1/en
Priority to DE502005005642T priority patent/DE502005005642D1/en
Priority to EP05777530A priority patent/EP1784266B1/en
Publication of WO2006021324A1 publication Critical patent/WO2006021324A1/en

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Classifications

    • 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
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • 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
    • B21B39/02—Feeding or supporting work; Braking or tensioning arrangements, e.g. threading arrangements
    • B21B39/08—Braking or tensioning arrangements
    • B21B39/082—Bridle devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • 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
    • B21B37/16—Control of thickness, width, diameter or other transverse dimensions
    • B21B37/24—Automatic variation of thickness according to a predetermined programme
    • 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
    • B21B37/48—Tension control; Compression 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/36—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
    • 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
    • B21B37/48—Tension control; Compression control
    • B21B37/52—Tension control; Compression control by drive motor control
    • B21B37/54—Tension control; Compression control by drive motor control including coiler drive control, e.g. reversing mills

Definitions

  • the invention relates to a rolling mill for rolling metallic strip, in particular of steel strip, which has at least one rolling stand, an upstream reeling device and a downstream reeling device, wherein between an upstream reeling device and rolling stand and / or between rolling mill and downstream reel an S-roll unit Is ⁇ , having two the band S-shaped leading roles.
  • tailored blanks The essential feature of these components, which is of particular interest in this context, is that they have a variable thickness.
  • tailored blanks were mainly made by welding. However, for the production of flexible cold rolling has proven to be particularly advantageous, can be produced with the tailored blanks.
  • the thickness of the rolled stock is changed during rolling.
  • the change of the roll gap can be done periodically. Due to the thickness change, it is particularly on the inlet,. but also on the outlet side of the roll stand for mass flow disturbances and Glas ⁇ fluctuations.
  • the dynamics of the reel motors are no longer sufficient for their compensation, so that in such systems so-called dancer rolls are used between the rolling stand and the reels.
  • dancer rolls are used between the rolling stand and the reels.
  • a cold rolling mill for cold rolling of metallic strip known and has a single stand with means for adjusting the roll gap and a KaIt- roller single frame upstream reel means for unwinding the tape and a roll stand downstream reel means for reeling the tape on.
  • a strip store for mass flow regulation or strip tension regulation of the rolling process is provided between the pre-arranged coiling device and the rolling stand.
  • This tape storage consists of at least three rollers, wherein the middle roller is designed as a dancer roll and can be moved perpendicular to the conveying direction of the band.
  • the dancer rollers described in the cited documents are connected to a linear actuator, with which they can be controlled or moved in a direction perpendicular to the För ⁇ direction of the tape direction. This can fulfill the tape storage function which is indispensable for flexible cold rolling.
  • Looper be ⁇ known, i. Rolls which are applied to the led to the rolling stand or ist ⁇ led by this band to make, for example, a tensile force determination in the band can.
  • the rolling force can be reduced by tensile forces on each side of the roll gap, it must not be too high only at the last stitch, since experience has shown that problems may occur in the subsequent process steps, in particular during annealing.
  • S-rolls S-roll units
  • the invention is therefore based on the object, a rolling mill for rolling metallic strip of the type mentioned in such a way that can be achieved with simple means and thus in an economical manner that both a band storage function, especially in flexible rolling, is given as well as a can be influenced influenced Switzerlanddifferenz between Walz ⁇ scaffolding and reels.
  • This object is achieved in that a first role of the S-roll unit is arranged stationary and a second roller of the S-roll unit is arranged to be movable relative to the first roller.
  • the second roller which is movably arranged relative to the first roller, is rotatably arranged on a pivoting arm, which is mounted on one side in a stationary axis. Both axes of the rollers of the S-roll unit are arranged parallel to each other.
  • the solid axis corresponds to the axis of rotation of the first roll.
  • a linear actuator is preferably articulated on the pivot arm in a pivot point remote from the stationary axis.
  • a linear actuator advantageously a hydraulic piston-cylinder system is used.
  • means for driving at least one of the rollers of the S-roller unit can be provided.
  • the proposed invention is advantageously used in a cold rolling mill.
  • the rolling stand is preferably provided as a single frame.
  • the proposed system is particularly suitable for flexible rolling, which means that the rolling mill can have means for flexibly adjusting the roll gap.
  • the belt transport or its handling is finally improved by the fact that at least one of the reel devices is equipped with means for speed control.
  • the proposed system makes it possible in a very simple and therefore cost-effective manner to provide a rolling mill for flexible rolling which makes available a strip accumulator which is essential in this type of process. Furthermore, the band is also held under the required tension, so that the rolling itself can be carried out in a process-advantageous manner.
  • FIG. 1 is a schematic side view of a rolling mill for flexible rolling of a metal strip and Fig. 2 shows an S-roll unit of the outlet side of the rolling mill in an enlarged view.
  • FIG. 1 schematically shows a rolling mill in which a coaxed steel strip 1 is unwound from an upstream reeling device 3 and fed to a single cold rolling mill 2.
  • a downstream reeling device 4 is provided, which rewinds the rolled metal strip 1.
  • the reel devices 3, 4 are provided with drives, not shown, so that the belt 1 can be unwound and wound up in a controlled or regulated manner.
  • the tape 1 has - viewed in its longitudinal direction - a non-constant thickness. That is, during the rolling process, the roll gap is changed according to a predetermined profile to produce a strip whose thickness changes periodically.
  • an S-roll unit 5 or 6 is arranged both between the upstream reeling device 3 and the rolling stand 2 and between the rolling stand 2 and the downstream reeling device 4.
  • Each S-roller unit 5, 6 has two rollers 7 and 8 or 9 and 10, which are arranged in a manner known per se to one another such that the band 1 is guided in an S-shape. Due to the consequent wrapping of the rollers 7, 8, 9, 10, it is possible, with appropriate drive of the rollers to transmit a force to the belt 1 and so the desired tensile force in the belt 1 between the S-roller unit 5, 6 and the rolling stand 2 to hold.
  • the S-roller units 5 and 6 are constructed as shown in Fig. 2.
  • One roller 9 (or 7) which feeds the belt 1 to the rolling stand 2 or removes it from it, is mounted in a stationary manner.
  • the other end of the Schwenk ⁇ arms 11 is mounted a fixed axis 12, which corresponds to the axis of rotation of the first roller 9, 7.
  • a linear actuator 14 is articulated, this being designed as a hydraulic piston-cylinder system.
  • the Ver ⁇ supply of the actuator 14 with hydraulic oil is indicated in Fig. 2.
  • the pivot point 13 can be raised or lowered, so that the second roller 8, 10 can be pivoted about its pivot axis 12. This results in a longer or shorter distance for the belt 1 between roll stand 2 and reel devices 3 and 4, whereby it is the S-roll units 5, 6 possible to exercise a tape storage function.
  • the described structure of the rolling mill and in particular of the two S-roll units 5, 6 makes it possible to compensate for the mass flow change occurring during flexible cold rolling and at the same time between rolling stand 2 and reels 3, 4 to build that Glasdifferenz with an optimal rolling process with a very simple design is possible.
  • the strip thickness control can be improved. It becomes possible to be able to make the settings of the tensile stresses that are favorable for the rolling process without regard to the tensile stresses present on the reeling devices.

Abstract

The invention relates to a rolling mill for rolling a metallic strip (1), especially a steel strip, comprising at least one roll stand (2), an upstream cylinder device (3), and a downstream cylinder device (4). An S-roll unit (5, 6) is arranged between the upstream cylinder device (3) and the roll stand (2) and/or between the roll stand (2) and the downstream cylinder device (4), said unit comprising two rolls (7, 8; 9, 10) guiding the strip (1) in the form of an S. According to the invention, a first roll (7, 9) of the S-roll unit (5, 6) is arranged in a fixed manner, and a second roll (8, 10) of the S-roll unit (5, 6) is arranged in such a way that it can be displaced in relation to the first roll (7, 9).

Description

Walzwerk zum Walzen von metallischem BandRolling mill for rolling metallic strip
Die Erfindung betrifft ein Walzwerk zum Walzen von metallischem Band, insbe¬ sondere von Stahlband, das mindestens ein Walzgerüst, eine vorgeordnete Haspeleinrichtung und eine nachgeordnete Haspeleinrichtung aufweist, wobei zwischen vorgeordneter Haspeleinrichtung und Walzgerüst und/oder zwischen Walzgerüst und nachgeordneter Haspeleinrichtung eine S-Rolleneinheit ange¬ ordnet ist, die zwei das Band S-förmig führende Rollen aufweist.The invention relates to a rolling mill for rolling metallic strip, in particular of steel strip, which has at least one rolling stand, an upstream reeling device and a downstream reeling device, wherein between an upstream reeling device and rolling stand and / or between rolling mill and downstream reel an S-roll unit Is ¬, having two the band S-shaped leading roles.
Der zunehmende Zwang zur Gewichtsersparnis, insbesondere in der Automo- bilindustrie, führte zur Entwicklung und zum Einsatz belastungsangepasster Bauteile, sog. Tailored Blanks. Das wesentliche Merkmal dieser Bauteile, das in diesem Zusammenhang von besonderem Interesse ist, ist, dass sie eine verän¬ derliche Dicke aufweisen. Zunächst wurden Tailored Blanks überwiegend durch Schweißen hergestellt. Als besonders vorteilhaft hat sich für deren Herstellung jedoch auch das flexible Kaltwalzen herausgestellt, mit dem Tailored Blanks hergestellt werden können.The increasing pressure to save weight, especially in the automotive industry, led to the development and use of load-adapted components, so-called tailored blanks. The essential feature of these components, which is of particular interest in this context, is that they have a variable thickness. First of all, tailored blanks were mainly made by welding. However, for the production of flexible cold rolling has proven to be particularly advantageous, can be produced with the tailored blanks.
Beim flexiblen Kaltwalzen wird während des Walzens die Dicke des Walzguts verändert. Die Veränderung des Walzspalts kann dabei periodisch erfolgen. Durch die Dickenänderung kommt es insbesondere auf der Einlauf-,. aber auch auf der Auslaufseite des Walzgerüsts zu Massenflussstörungen und zu Zug¬ schwankungen. Bei den für eine profitable Fertigung notwendigen Walzge¬ schwindigkeiten reicht zu deren Kompensation die Dynamik der Haspelmotore nicht mehr aus, so dass bei derartigen Anlagen sog. Tänzerrollen zwischen Walzgerüst und Haspeln eingesetzt werden. In der WO 03/008122 A1 ist eine solche Lösung beschrieben. Es ist daraus ein Kaltwalzwerk zum Kaltwalzen von metallischem Band bekannt und weist ein Einzelgerüst mit Mitteln zum Einstellen des Walzspaltes sowie eine dem KaIt- walzeinzelgerüst vorgeordnete Haspeleinrichtung zum Abhaspeln des Bandes sowie eine dem Walzgerüst nachgeordnete Haspeleinrichtung zum Aufhaspeln des Bandes auf. Um ein flexibles Walzen zu ermöglichen, ist zwischen der vor¬ geordneten Haspeleinrichtung und dem Walzgerüst ein Bandspeicher für eine Massenflussregelung bzw. Bandzugregelung des Walzprozesses vorgesehen. Dieser Bandspeicher besteht aus mindestens drei Rollen, wobei die mittlere Rolle als Tänzerrolle ausgebildet ist und senkrecht zur Förderrichtung des Ban- des bewegt werden kann.In flexible cold rolling, the thickness of the rolled stock is changed during rolling. The change of the roll gap can be done periodically. Due to the thickness change, it is particularly on the inlet,. but also on the outlet side of the roll stand for mass flow disturbances and Zug¬ fluctuations. In the case of the rolling speeds necessary for profitable production, the dynamics of the reel motors are no longer sufficient for their compensation, so that in such systems so-called dancer rolls are used between the rolling stand and the reels. Such a solution is described in WO 03/008122 A1. It is therefrom a cold rolling mill for cold rolling of metallic strip known and has a single stand with means for adjusting the roll gap and a KaIt- roller single frame upstream reel means for unwinding the tape and a roll stand downstream reel means for reeling the tape on. In order to enable flexible rolling, a strip store for mass flow regulation or strip tension regulation of the rolling process is provided between the pre-arranged coiling device and the rolling stand. This tape storage consists of at least three rollers, wherein the middle roller is designed as a dancer roll and can be moved perpendicular to the conveying direction of the band.
Eine ähnliche Lösung - allerdings unter Einsatz einer größeren Anzahl von Rol¬ len - geht aus der EP 1 121 990 A2 hervor. Entsprechendes gilt für eine Aus¬ führung, die aus der JP 10034204 A bekannt ist.A similar solution - albeit using a larger number of rollers - is evident from EP 1 121 990 A2. The same applies to a Aus¬ leadership, which is known from JP 10034204 A.
Die in den genannten Dokumenten beschriebenen Tänzerrollen sind mit einem Linearaktuator verbunden, mit dem sie gesteuert bzw. geregelt in eine zur För¬ derrichtung des Bandes senkrechte Richtung bewegt werden können. Damit kann die Bandspeicherfunktion erfüllt werden, die für das flexible Kaltwalzen unabdingbar ist.The dancer rollers described in the cited documents are connected to a linear actuator, with which they can be controlled or moved in a direction perpendicular to the För¬ direction of the tape direction. This can fulfill the tape storage function which is indispensable for flexible cold rolling.
Aus der DE 198 18 207 C2 und aus der JP 60231516 sind sog. Looper be¬ kannt, d.h. Rollen, die an das zum Walzgerüst geführte bzw. von diesem abge¬ führte Band angelegt werden, um beispielsweise eine Zugkraftermittlung im Band vornehmen zu können.From DE 198 18 207 C2 and JP 60231516 so-called. Looper be¬ known, i. Rolls which are applied to the led to the rolling stand or abge¬ led by this band to make, for example, a tensile force determination in the band can.
Beim Walzen kann die Walzkraft durch Zugkräfte auf jeder Seite des Walzspal¬ tes verringert werden, sie darf lediglich beim letzten Stich nicht zu hoch sein, da sonst erfahrungsgemäß in den nachfolgenden Prozessschritten, insbesondere beim Glühen, Probleme auftreten können. Zum Aufbau einer Zugdifferenz zwi- sehen Walzgerüst und Haspel können S-Rolleneinheiten (S-Ro!len) eingesetzt werden.During rolling, the rolling force can be reduced by tensile forces on each side of the roll gap, it must not be too high only at the last stitch, since experience has shown that problems may occur in the subsequent process steps, in particular during annealing. To build up a train difference between The rolling stand and reel can be used with S-roll units (S-rolls).
Soll sowohl eine Bandspeicherfunktion - in der Regel mit Tänzerrollen - erfüllt werden als auch eine gewünschte Zugdifferenz zwischen Walzgerüst und Has- pel - in der Regel durch S-Rolleneinheiten - erzeugt werden, ist bei den vorbe¬ kannten Lösungen ein erheblicher apparativer Aufwand erforderlich.If both a band-storage function-as a rule with dancer rolls-is to be fulfilled and a desired difference in pull between roll stand and hatch-generally by means of S-roll units-is to be produced, a considerable amount of equipment is required in the case of the known solutions.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Walzwerk zum Walzen von metallischem Band der eingangs genannten Art derart weiterzubilden, dass mit einfachen Mitteln und damit in wirtschaftlicher Weise erreicht werden kann, dass sowohl eine Bandspeicherfunktion, insbesondere beim flexiblen Walzen, gegeben ist als auch eine definiert beeinflussbare Zugdifferenz zwischen Walz¬ gerüst und Haspeln gehalten werden kann.The invention is therefore based on the object, a rolling mill for rolling metallic strip of the type mentioned in such a way that can be achieved with simple means and thus in an economical manner that both a band storage function, especially in flexible rolling, is given as well as a can be influenced influenced Zugdifferenz between Walz¬ scaffolding and reels.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass eine erste Rolle der S-Rolleneinheit ortsfest angeordnet ist und eine zweite Rolle der S- Rolleneinheit relativ zur ersten Rolle beweglich angeordnet ist.This object is achieved in that a first role of the S-roll unit is arranged stationary and a second roller of the S-roll unit is arranged to be movable relative to the first roller.
Abgesehen von evtl. noch vorgesehenen Führungsrollen für das Band soll er- findungsgemäß lediglich die S-Rolleneinheit zwischen Haspel und Walzgerüst vorgesehen werden, wobei jedoch durch die vorgeschlagene Ausgestaltung der S-Rolleneinheit sowohl die Bandspeicherfunktion als auch der benötigte Zug auf das Band ausgeübt werden kann.Apart from possibly still provided guide rollers for the band according to the invention only the S-reel unit between reel and stand are provided, however, both the tape storage function and the required train can be exercised on the tape by the proposed design of the S-reel unit ,
Bevorzugt ist vorgesehen, dass die relativ zur ersten Rolle beweglich angeord¬ nete zweite Rolle an einem Schwenkarm drehbar angeordnet ist, der einseitig in einer raumfesten Achse gelagert ist. Beide Achsen der Rollen der S- Rolleneinheit sind dabei parallel zueinander angeordnet. Mit Vorteil entspricht die raumfeste Achse der Drehachse der ersten Rolle. Zur Verschwenkung der zweiten Rolle relativ zur ersten ist vorzugsweise in ei¬ nem von der raumfesten Achse entfernten Drehpunkt ein Linearaktuator am Schwenkarm gelenkig angeordnet. Als Linearaktuator wird vorteilhafter Weise ein hydraulisches Kolben-Zylinder-System eingesetzt.It is preferably provided that the second roller, which is movably arranged relative to the first roller, is rotatably arranged on a pivoting arm, which is mounted on one side in a stationary axis. Both axes of the rollers of the S-roll unit are arranged parallel to each other. Advantageously, the solid axis corresponds to the axis of rotation of the first roll. In order to pivot the second roller relative to the first, a linear actuator is preferably articulated on the pivot arm in a pivot point remote from the stationary axis. As a linear actuator advantageously a hydraulic piston-cylinder system is used.
Um den Zugaufbau im Band optimal beeinflussen zu können, können Mittel zum Antrieb zumindest einer der Rollen der S-Rolleneinheit vorgesehen sein.In order to optimally influence the tensile structure in the band, means for driving at least one of the rollers of the S-roller unit can be provided.
Der Erfindungsvorschlag kommt mit Vorteil bei einem Kaltwalzwerk zum Ein¬ satz. Weiterhin wird das Walzgerüst bevorzugt als Einzelgerüst vorgesehen. Das vorgeschlagene System eignet sich besonders zum flexiblen Walzen, wes¬ halb das Walzgerüst Mittel zum flexiblen Einstellen des Walzspalts aufweisen kann.The proposed invention is advantageously used in a cold rolling mill. Furthermore, the rolling stand is preferably provided as a single frame. The proposed system is particularly suitable for flexible rolling, which means that the rolling mill can have means for flexibly adjusting the roll gap.
Der Bandtransport bzw. seine Handhabung wird schließlich dadurch verbessert, dass mindestens eine der Haspeleinrichtungen mit Mitteln zur Drehzahlrege¬ lung ausgestattet ist.The belt transport or its handling is finally improved by the fact that at least one of the reel devices is equipped with means for speed control.
Mit dem vorgeschlagenen System wird es in sehr einfacher und damit in kos¬ tengünstiger Weise möglich, eine Walzanlage für das flexible Walzen bereitzu- stellen, die einen Bandspeicher zur Verfügung stellt, der bei dieser Verfahrens¬ art wesentlich ist. Ferner wird auch das Band unter dem benötigten Zug gehal¬ ten, so dass das Walzen selber in verfahrenstechnisch vorteilhafter Weise durchgeführt werden kann.The proposed system makes it possible in a very simple and therefore cost-effective manner to provide a rolling mill for flexible rolling which makes available a strip accumulator which is essential in this type of process. Furthermore, the band is also held under the required tension, so that the rolling itself can be carried out in a process-advantageous manner.
In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Es zeigen:In the drawing, an embodiment of the invention is shown. Show it:
Fig. 1 schematisch die Seitenansicht eines Walzwerks zum flexiblen Wal¬ zen eines Metallbandes und Fig. 2 eine S-Rolleneinheit der Auslaufseite des Walzwerks in vergrößerter Darstellung.1 is a schematic side view of a rolling mill for flexible rolling of a metal strip and Fig. 2 shows an S-roll unit of the outlet side of the rolling mill in an enlarged view.
In Fig. 1 ist schematisch ein Walzwerk zu sehen, in dem ein aufgecoiltes Stahl¬ band 1 von einer vorgelagerten Haspeleinrichtung 3 abgewickelt und einem einzigen Kaltwalzgerüst 2 zugeführt wird. In Förderrichtung R des Metallstran¬ ges 1 hinter dem Walzgerüst 2 ist eine nachgeordnete Haspeleinrichtung 4 vor¬ gesehen, die das gewalzte Metallband 1 wieder aufwickelt. Die Haspelvorrich¬ tungen 3, 4 sind mit nicht dargestellten Antrieben versehen, so dass das Band 1 in gesteuerter bzw. geregelter Weise ab- und aufgewickelt werden kann.FIG. 1 schematically shows a rolling mill in which a coaxed steel strip 1 is unwound from an upstream reeling device 3 and fed to a single cold rolling mill 2. In the conveying direction R of the metal strand 1 behind the rolling stand 2, a downstream reeling device 4 is provided, which rewinds the rolled metal strip 1. The reel devices 3, 4 are provided with drives, not shown, so that the belt 1 can be unwound and wound up in a controlled or regulated manner.
Im Walzgerüst 2 findet ein flexibles Kaltwalzen des Bandes 1 statt. Das Band 1 hat dabei - in seiner Längsrichtung betrachtet - eine nicht-konstante Dicke. Das bedeutet, dass während des Walzprozesses der Walzspalt gemäß einem vorgegebenen Profil verändert wird, um ein Band zu produzieren, dessen Dicke sich periodisch verändert.In the rolling stand 2, a flexible cold rolling of the strip 1 takes place. The tape 1 has - viewed in its longitudinal direction - a non-constant thickness. That is, during the rolling process, the roll gap is changed according to a predetermined profile to produce a strip whose thickness changes periodically.
Damit dieser Prozess unter verfahrenstechnisch günstigen Verhältnissen durchgeführt werden kann, ist es erforderlich, die Massenflussänderung im Band zu kompensieren, die sich aufgrund der variablen Banddicke ergibt. Wei- terhin muss im Band 1 ein definierter Zug aufgebaut bzw. gehalten werden, um die Walzkraft gering zu halten.For this process to be carried out under favorable process conditions, it is necessary to compensate for the mass flow change in the strip, which results from the variable strip thickness. Furthermore, in band 1, a defined tension must be built up or held in order to keep the rolling force low.
Um dies zu erreichen, ist sowohl zwischen vorgeordneter Haspeleinrichtung 3 und Walzgerüst 2 als auch zwischen Walzgerüst 2 und nachgeordneter Haspel- Vorrichtung 4 je eine S-Rolleneinheit 5 bzw. 6 angeordnet. Jede S-Rolleneinheit 5, 6 weist zwei Rollen 7 und 8 bzw. 9 und 10 auf, die in an sich bekannter Wei¬ se so zueinander angeordnet sind, dass das Band 1 S-förmig geführt wird. Durch die dadurch bedingte Umschlingung der Rollen 7, 8, 9, 10 ist es möglich, bei entsprechendem Antrieb der Rollen eine Kraft auf das Band 1 zu übertragen und so die gewünschte Zugkraft im Band 1 zwischen den S-Rolleneinheit 5, 6 und dem Walzgerüst 2 zu halten. Um neben dem Aufbringen des Zugs im Band 1 auch die Bandspeicherfunktion ausüben zu können, sind die S-Rolleneinheiten 5 und 6 wie in Fig. 2 ersichtlich aufgebaut. Die eine Rolle 9 (bzw. 7), die das Band 1 dem Walzgerüst 2 zuführt bzw. dieses von ihm abführt, ist ortsfest gelagert. Die andere Rolle 10 (bzw. 8) ist hingegen relativ zur ersten Rolle 9, 7 verschwenkbar gelagert, wozu sie am Ende eines Schwenkarms 11 angeordnet ist. Das andere Ende des Schwenk¬ arms 11 ist einer raumfesten Achse 12 gelagert, die der Drehachse der ersten Rolle 9, 7 entspricht.In order to achieve this, an S-roll unit 5 or 6 is arranged both between the upstream reeling device 3 and the rolling stand 2 and between the rolling stand 2 and the downstream reeling device 4. Each S-roller unit 5, 6 has two rollers 7 and 8 or 9 and 10, which are arranged in a manner known per se to one another such that the band 1 is guided in an S-shape. Due to the consequent wrapping of the rollers 7, 8, 9, 10, it is possible, with appropriate drive of the rollers to transmit a force to the belt 1 and so the desired tensile force in the belt 1 between the S-roller unit 5, 6 and the rolling stand 2 to hold. In order to be able to exert the tape storage function in addition to the application of the train in the band 1, the S-roller units 5 and 6 are constructed as shown in Fig. 2. One roller 9 (or 7), which feeds the belt 1 to the rolling stand 2 or removes it from it, is mounted in a stationary manner. The other roller 10 (or 8), however, is pivotally mounted relative to the first roller 9, 7, for which purpose it is arranged at the end of a pivot arm 11. The other end of the Schwenk¬ arms 11 is mounted a fixed axis 12, which corresponds to the axis of rotation of the first roller 9, 7.
Etwas entfernt von der Drehachse der zweiten Rolle 8, 10, nämlich in einem Drehpunkt 13, ist das eine Ende eines Linearaktuators 14 gelenkig angeordnet, wobei dieser als hydraulisches Kolben-Zylinder-System ausgebildet ist. Die Ver¬ sorgung des Aktuators 14 mit Hydrauliköl ist in Fig. 2 angedeutet.Somewhat remote from the axis of rotation of the second roller 8, 10, namely at a pivot point 13, the one end of a linear actuator 14 is articulated, this being designed as a hydraulic piston-cylinder system. The Ver¬ supply of the actuator 14 with hydraulic oil is indicated in Fig. 2.
Durch gesteuerte bzw. geregelte Beaufschlagung des Kolben-Zylinder-Systems 14 mit Hydrauliköl kann der Drehpunkt 13 angehoben bzw. abgesenkt werden, so dass die zweite Rolle 8, 10 um ihre Schwenkachse 12 verschwenkt werden kann. Dadurch ergibt sich eine längere oder kürzere Strecke für das Band 1 zwischen Walzgerüst 2 und Haspelvorrichtungen 3 bzw. 4, womit es den S- Rolleneinheiten 5, 6 möglich wird, eine Bandspeicherfunktion auszuüben.By controlled or controlled admission of the piston-cylinder system 14 with hydraulic oil, the pivot point 13 can be raised or lowered, so that the second roller 8, 10 can be pivoted about its pivot axis 12. This results in a longer or shorter distance for the belt 1 between roll stand 2 and reel devices 3 and 4, whereby it is the S-roll units 5, 6 possible to exercise a tape storage function.
Der beschriebene Aufbau der Walzanlage und insbesondere der beiden S- Rolleneinheiten 5, 6 macht es möglich, bei sehr einfacher Konstruktion die beim flexiblen Kaltwalzen auftretende Massenflussänderung zu kompensieren und gleichzeitig zwischen Walzgerüst 2 und Haspelvorrichtungen 3, 4 diejenige Zugdifferenz aufzubauen, mit der ein optimaler Walzvorgang möglich ist. Bei entsprechend schneller Regelung des Linearaktuators 14 ist es möglich, die Massenflussstörungen ohne nennenswerte Zugschwankungen zu kompen¬ sieren. Bislang war für das Erreichen dieses Ziels eine größere Anzahl von Rollen vor¬ gesehen und nötig, was die entsprechenden Anlagen teuer machte.The described structure of the rolling mill and in particular of the two S-roll units 5, 6 makes it possible to compensate for the mass flow change occurring during flexible cold rolling and at the same time between rolling stand 2 and reels 3, 4 to build that Zugdifferenz with an optimal rolling process with a very simple design is possible. With a correspondingly fast control of the linear actuator 14, it is possible to compensate for the mass flow disturbances without appreciable pull fluctuations. So far, a larger number of roles was vor¬ seen and necessary for the achievement of this goal, which made the corresponding equipment expensive.
Durch den Ausgleich der Massenflussstörungen und der damit einher gehenden Verringerung von Zugschwankungen kann die Band-Dickenregelung verbessert werden. Es wird möglich, die Einstellungen der für den Walzprozess günstigen Zugspannungen ohne Rücksicht auf die an den Haspelvorrichtungen vorliegen¬ den Zugspannungen vornehmen zu können.By balancing the mass flow disturbances and the concomitant reduction of pull variations, the strip thickness control can be improved. It becomes possible to be able to make the settings of the tensile stresses that are favorable for the rolling process without regard to the tensile stresses present on the reeling devices.
Die Kompensation der Massenflussstörungen und die Bandspeicherfunktion werden nunmehr in einem Gerät, nämlich in der beschriebenen S-Rolleneinheit, realisiert, wofür bislang separate Geräte nötig waren. The compensation of the mass flow disturbances and the band storage function are now realized in one device, namely in the described S-roll unit, for which separate devices were hitherto necessary.
Bezugszeichenliste:LIST OF REFERENCE NUMBERS
1 metallisches Band (Stahlband)1 metallic band (steel band)
2 Walzgerüst2 rolling stand
3 vorgeordnete Haspeleinrichtung3 upstream reel device
4 nachgeordnete Haspeleinrichtung4 downstream coiler
5 S-Rollengang5 S roller conveyor
6 S-Rollengang6 S roller conveyor
7 Rolle7 roll
8 Rolle8 roll
9 Rolle9 roll
10 Rolle10 roll
11 Schwenkarm11 swivel arm
12 raumfesten Achse12 fixed axis
13 Drehpunkt13 pivot
14 Linearaktuator14 linear actuator
R Förderrichtung des Bandes R conveying direction of the belt

Claims

Patentansprüche: claims:
1. Walzwerk zum Walzen von metallischem Band (1 ), insbesondere von Stahlband, das mindestens ein Walzgerüst (2), eine vorgeordnete Has¬ peleinrichtung (3) und eine nachgeordnete Haspeleinrichtung (4) aufweist, wobei zwischen vorgeordneter Haspeleinrichtung (3) und Walzgerüst (2) und/oder zwischen Walzgerüst (2) und nachgeordneter Haspeleinrichtung (4) eine S-Rolleneinheit (5, 6) angeordnet ist, die zwei das Band (1) S- förmig führende Rollen (7, 8; 9, 10) aufweist, dadurch gekennzeichnet, dass eine erste Rolle (7, 9) der S-Rolleneinheit (5, 6) ortsfest angeordnet ist und eine zweite Rolle (8, 10) der S-Rolleneinheit (5, 6) relativ zur ersten Rolle (7, 9) beweglich angeordnet ist.1. rolling mill for rolling metallic strip (1), in particular of steel strip, the at least one rolling mill (2), an upstream Has¬ peleinrichtung (3) and a downstream reeling device (4), wherein between upstream reeling device (3) and rolling stand (2) and / or between roll stand (2) and downstream reeling device (4) an S-roll unit (5, 6) is arranged, the two rolls (7, 8, 9, 10) which guide the strip (1) in an S-shape. characterized in that a first roller (7, 9) of the S-roller unit (5, 6) is arranged stationary and a second roller (8, 10) of the S-roller unit (5, 6) relative to the first roller (7 , 9) is movably arranged.
2. Walzwerk nach Anspruch 1 , dadurch gekennzeichnet, dass die relativ zur ersten Rolle (7, 9) beweglich angeordnete zweite Rolle (8, 10) an einem Schwenkarm (11 ) drehbar angeordnet ist, der einseitig in einer raumfesten Achse (12) gelagert ist.2. Rolling mill according to claim 1, characterized in that the relative to the first roller (7, 9) movably arranged second roller (8, 10) on a pivot arm (11) is rotatably mounted on one side in a fixed axis (12) is.
3. Walzwerk nach Anspruch 2, dadurch gekennzeichnet, dass die raumfeste Achse (12) der Drehachse der ersten Rolle (7, 9) ent¬ spricht.3. Rolling mill according to claim 2, characterized in that the spatially fixed axis (12) of the axis of rotation of the first roller (7, 9) ent speaks.
4. Walzwerk nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass am Schwenkarm (11 ) in einem von der raumfesten Achse (12) ent¬ fernten Drehpunkt (13) ein Linearaktuator (14) gelenkig angeordnet ist. 4. Rolling mill according to claim 2 or 3, characterized in that on the pivot arm (11) in one of the space-fixed axis (12) ent¬ distant pivot point (13), a linear actuator (14) is articulated.
5. Walzwerk nach Anspruch 4, dadurch gekennzeichnet, dass der Linearaktuator (14) ein hydraulisches Kolben-Zylinder-System ist.5. Rolling mill according to claim 4, characterized in that the linear actuator (14) is a hydraulic piston-cylinder system.
6. Walzwerk nach einem der Ansprüche 1 bis 5, gekennzeichnet durch6. Rolling mill according to one of claims 1 to 5, characterized by
Mittel zum Antrieb zumindest einer der Rollen (7, 8, 9, 10) der S- Rolleneinheit (5, 6).Means for driving at least one of the rollers (7, 8, 9, 10) of the S-roll unit (5, 6).
7. Walzwerk nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass es als Kaltwalzwerk ausgebildet ist.7. Rolling mill according to one of claims 1 to 6, characterized in that it is designed as a cold rolling mill.
8. Walzwerk nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Walzgerüst (2) als Einzelgerüst vorgesehen ist.8. Rolling mill according to one of claims 1 to 7, characterized in that the rolling stand (2) is provided as a single frame.
9. Walzwerk nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Walzgerüst (2) mit Mitteln zum flexiblen Einstellen des Walz¬ spalts ausgestattet ist.9. Rolling mill according to one of claims 1 to 8, characterized in that the rolling stand (2) is equipped with means for flexibly adjusting the Walz¬ gap.
10. Walzwerk nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass mindestens eine der Haspeleinrichtungen (3, 4) mit Mitteln zur Dreh¬ zahlregelung ausgestattet ist. 10. Rolling mill according to one of claims 1 to 9, characterized in that at least one of the reel means (3, 4) is equipped with means for Dreh¬ number control.
PCT/EP2005/008686 2004-08-26 2005-08-10 Rolling mill for rolling a metallic strip WO2006021324A1 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
US11/660,174 US20070261456A1 (en) 2004-08-26 2005-08-10 Rolling Mill for Rolling a Metallic Strip
CA2548796A CA2548796C (en) 2004-08-26 2005-08-10 Rolling mill for rolling metal strip
CN2005800286991A CN101010154B (en) 2004-08-26 2005-08-10 Rolling system for rolling metallic band
JP2007528677A JP4976291B2 (en) 2004-08-26 2005-08-10 Rolling mill for rolling metal strip
BRPI0506421-0A BRPI0506421A (en) 2004-08-26 2005-08-10 rolling mill for metal strip rolling
KR1020067007277A KR101139305B1 (en) 2004-08-26 2005-08-10 Rolling mill for rolling metallic band
DE502005005642T DE502005005642D1 (en) 2004-08-26 2005-08-10 ROLLING MACHINE FOR ROLLING METALLIC RIBBON
EP05777530A EP1784266B1 (en) 2004-08-26 2005-08-10 Rolling mill for rolling a metallic strip

Applications Claiming Priority (2)

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DE102004041321A DE102004041321A1 (en) 2004-08-26 2004-08-26 Rolling mill for rolling metallic strip
DE102004041321.5 2004-08-26

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EP (1) EP1784266B1 (en)
JP (1) JP4976291B2 (en)
KR (1) KR101139305B1 (en)
CN (1) CN101010154B (en)
AT (1) ATE410248T1 (en)
BR (1) BRPI0506421A (en)
CA (1) CA2548796C (en)
DE (2) DE102004041321A1 (en)
ES (1) ES2311233T3 (en)
RU (1) RU2409435C2 (en)
TW (1) TWI346586B (en)
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CN103717322B (en) * 2011-08-08 2016-09-28 首要金属科技奥地利有限责任公司 Rolling equipment and the method for rolling
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CN101010154B (en) 2010-09-29
CN101010154A (en) 2007-08-01
US20070261456A1 (en) 2007-11-15
ES2311233T3 (en) 2009-02-01
ZA200601956B (en) 2008-03-26
TW200609049A (en) 2006-03-16
CA2548796A1 (en) 2006-03-02
EP1784266B1 (en) 2008-10-08
JP4976291B2 (en) 2012-07-18
RU2409435C2 (en) 2011-01-20
EP1784266A1 (en) 2007-05-16
DE502005005642D1 (en) 2008-11-20
ATE410248T1 (en) 2008-10-15
KR101139305B1 (en) 2012-04-26
JP2008510624A (en) 2008-04-10
BRPI0506421A (en) 2006-12-26
DE102004041321A1 (en) 2006-03-02
KR20070042490A (en) 2007-04-23
TWI346586B (en) 2011-08-11
RU2006135625A (en) 2008-04-20

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