EP1984130A1 - Straightening device and straightening method for a metal strip - Google Patents

Straightening device and straightening method for a metal strip

Info

Publication number
EP1984130A1
EP1984130A1 EP07711483A EP07711483A EP1984130A1 EP 1984130 A1 EP1984130 A1 EP 1984130A1 EP 07711483 A EP07711483 A EP 07711483A EP 07711483 A EP07711483 A EP 07711483A EP 1984130 A1 EP1984130 A1 EP 1984130A1
Authority
EP
European Patent Office
Prior art keywords
straightening
metal strip
roller
pressure roller
pressure
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.)
Granted
Application number
EP07711483A
Other languages
German (de)
French (fr)
Other versions
EP1984130B1 (en
Inventor
Oswald Deutscher
Frank Gorgels
Jochen Kurzynski
Roger Lathe
Paul Dieter PÜTZ
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.)
BETR FORSCH INST ANGEW FORSCH
BFI VDEH Institut fuer Angewandte Forschung GmbH
Original Assignee
BETR FORSCH INST ANGEW FORSCH
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
Application filed by BETR FORSCH INST ANGEW FORSCH, BFI VDEH Institut fuer Angewandte Forschung GmbH filed Critical BETR FORSCH INST ANGEW FORSCH
Publication of EP1984130A1 publication Critical patent/EP1984130A1/en
Application granted granted Critical
Publication of EP1984130B1 publication Critical patent/EP1984130B1/en
Not-in-force 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
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/02—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling by rollers

Definitions

  • the invention relates to a straightening device and a straightening method for a metal strip and takes priority of German Patent Application 10 2006 006 530.1.
  • temper rolling the mechanical properties are adjusted for a possible post-finishing deep drawing, such as the so-called n-value and the yield strength. Furthermore, the desired surface finish is set in the temper rolling process. With the stretch bending process, the desired flatness of the strip is finally produced.
  • the invention has for its object to simplify the finishing of metal strips.
  • the invention is based on the basic idea that the setting of mechanical properties, as has hitherto been carried out in the so-called temper rolling process, can also be set in a straightening process, for example a stretch bending process.
  • a straightening device is provided in addition to the conventional straightening rollers at least one pressure roller is provided, which is arranged opposite a straightening roller and with the one-sided compression deformation of the metal strip can be effected.
  • the state of stress in the metal strip is utilized at the moment of its bending via the straightening roller.
  • a Lijnszugnapssverlauf is set over the metal strip cross-section whose maximum value in the region of the straightening roller opposite surface of the metal strip is applied.
  • this surface is loaded with a pressure roller and thus at least the near-surface region is subjected to an additional voltage, at least in this area, a voltage state can be set, which is above the yield point, so that the desired mechanical Eigen shadow, z. B. the n-value or the yield strength, but also the desired surface finish can be adjusted.
  • the straightening device has at least one first and one second straightening roller over which the metal band to be straightened can be guided in the meandering band guide typical for bending.
  • the metal strip is passed partially looping over the first straightening roller and then partially wrapping over the second straightening roller, the first straightening roller contacting a first surface of the metal strip and the second straightening roller contacting the surface of the metal strip opposite that surface.
  • the straightening rollers can be employed, ie displaced in the radial direction or, for example, are pivoted about a pivot axis perpendicular to the longitudinal axis.
  • At least one pressure roller is provided, which is arranged to a straightening roller as a counter-roller and with which a one-sided compression deformation of the metal strip can be effected.
  • the pressure roller is adjustable and in particular has an active element with which the pressure roller with a predetermined pressure the metal band can be pressed.
  • support rollers may be provided which support the pressure roller.
  • the construction of the support of a pressure roller known from skin-passing stands can be provided for the support of the pressure roller in the straightening device according to the invention.
  • Understood metal strip which in contrast to rolling does not deform the metal strip over its entire cross-section.
  • a one-sided compression deformation understood a compression deformation, which has a penetration of about 75% of the metal strip cross-section of the surface acted upon by the pressure roller, more preferably 50% of the metal strip cross-section.
  • the compression set is limited to the area of the surface on which the pressure roller acts. This near-surface region has in particular at least the depth of the so-called Lüders bands.
  • a region close to the surface is understood in particular to be a region having a penetration depth of at most 10% of the metal strip cross-section, particularly preferably 1% of the metal strip cross-section.
  • the pressure roller has a smooth surface or, if several pressure rollers are used, the pressure rollers have a smooth surface. This allows to create a smooth surface.
  • a pressure roller or a plurality of pressure rollers may have a textured surface. This makes it possible to have a texturing in the
  • a textured surface is understood in particular to mean a surface on which individual elevations or depressions are provided.
  • one of the surface types Shotblast, EDT, EBT (deterministic or pseudo-stochastic), Lasertex and Topochrom can be provided.
  • a first pressure roller with a smooth surface and a second pressure roller with a textured surface may further be provided. This makes it possible to emboss a textured surface on one side of the metal strip while creating a smooth surface on the opposite side of the metal strip.
  • the first and / or the second straightening roller has a textured surface.
  • the straightening rollers and the pressure rollers may have the same diameter.
  • the pressure rollers may have larger or smaller diameters than the straightening rollers.
  • Pressure rollers are designed as a measuring roller. In particular, the temperature, shear stress and / or pressure distribution is measured by this measuring roller.
  • the straightening method according to the invention provides that the metal strip bent over a straightening roll is inserted on the surface opposite the straightening roll. is pressure-deformed on the side. Particularly preferably, this compression deformation takes place only in the region of the surface of the metal strip.
  • a longitudinal tensile stress profile over the metal strip cross section is set in the metal strip by bending over the directional roll, in which the longitudinal tensile stress applied to the surface of the metal strip opposite the straightening roll is less than the yield strength of the metal strip and by a pressure roll acting on this surface an additional
  • the method according to the invention and the straightening device according to the invention are particularly preferably used in a stretch bending process. Particularly preferred are the straightening rollers upstream and downstream braking and driving roller groups provided. Alternatively, the straightening method according to the invention and the straightening device according to the invention can be used within the scope of a positive-locking bending machine.
  • the straightening method according to the invention and the straightening device according to the invention are used in particular for straightening so-called carbon steels, which have a pronounced yield strength and thus exhibit Lüders straps during tensile deformation.
  • the straightening method is applied using a measuring roller.
  • This measuring roller is used in particular the mechanical
  • Fig. 1 is a straightening roller and the straightening roller opposite the pressure roller of the straightening device according to the invention in a schematic side view and
  • Fig. 2 set in the metal strip by bending over the straightening roller
  • the straightening device of this embodiment has at least two straightening rollers with pressure rollers arranged opposite them, of which only the first pair of straightening roller 1 and pressure roller 2 are shown in FIG. That too directing metal strip 3 is guided bent over the straightening roller 1 and applied with Leksszugêttress F z .
  • the rectifying roller 1 opposite pressure roller 2 causes a one-sided compression deformation of the metal strip.
  • Fig. 2 the Lijnszugnapssverlauf is shown over the cross section of the metal strip. It can be seen that the longitudinal tensile stress is greatest in the area of the surface opposite the straightening roller 1. By creating an additional tension in this area by a pressure roller acting on the surface, the stress level in this area is increased above the illustrated longitudinal tension stress level and raised above the yield point so that the adjustment of mechanical properties or surface qualities can be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)

Abstract

The present invention relates to a straightening device for a metal strip, comprising a first straightening roller and a second straightening roller which are arranged with respect to one another such that the metal strip is guided, while being enveloped by it, over the first straightening roller and then, while being enveloped by it, over the second straightening roller. One of the straightening rollers (1) is arranged opposite to a printing roller (2), with which a one-sided deformation by compression of the metal strip (3) can be brought about. The invention also relates to a straightening method.

Description

Betriebsforschungsinstitut VDEh-I nstitut für angewandte Forschung GmbH Betriebsforschungsinstitut VDEh-I nstitut für angewandte Forschung GmbH
Sohnstraße 65, 40237 DüsseldorfSohnstrasse 65, 40237 Dusseldorf
"Richtvorrichtung und Richtverfahren für ein Metallband""Straightening device and straightening method for a metal strip"
Die Erfindung betrifft eine Richtvorrichtung und ein Richtverfahren für ein Metallband und nimmt die Priorität der deutschen Patentanmeldung 10 2006 006 530.1 in Anspruch.The invention relates to a straightening device and a straightening method for a metal strip and takes priority of German Patent Application 10 2006 006 530.1.
Bei der Endbearbeitung von Metallbändern, beispielsweise von Feinblech werden in der Praxis regelmäßig zwei Prozessstufen eingesetzt. Zum einen der sogenannte Dressierwalzprozess und zum anderen der Streckbiegerichtprozess. Beim Dressieren werden die mechanischen Eigenschaften für ein möglicherweise nach der Endbearbeitung erfolgendes Tiefziehen eingestellt, wie beispielsweise der sogenannte n-Wert und die Streckgrenze. Ferner wird im Dressierprozess die gewünschte Oberflächenbeschaffenheit eingestellt. Mit dem Streckbiegerichtprozess wird dann abschließend die gewünschte Planheit des Bandes hergestellt.In the finishing of metal strips, for example of sheet metal, two process stages are regularly used in practice. On the one hand the so-called temper rolling and on the other hand the stretch bending process. In the case of temper rolling, the mechanical properties are adjusted for a possible post-finishing deep drawing, such as the so-called n-value and the yield strength. Furthermore, the desired surface finish is set in the temper rolling process. With the stretch bending process, the desired flatness of the strip is finally produced.
Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, die Endbearbeitung von Metallbändern zu vereinfachen.Against this background, the invention has for its object to simplify the finishing of metal strips.
Diese Aufgabe wird durch die Gegenstände der nebengeordneten Ansprüche gelöst. Vorteilhafte Ausführungsformen sind in den Unteransprüchen angegeben.This object is achieved by the subject matters of the independent claims. Advantageous embodiments are specified in the subclaims.
Die Erfindung geht von dem Grundgedanken aus, dass das Einstellen mechanischer Eigenschaften, wie es bisher in dem sogenannten Dressierwalzprozess erfolgt ist, auch in einem Richtprozess, beispielsweise einem Streckbiegerichtvorgang, eingestellt werden kann. Dafür wird eine Richtvorrichtung vorgesehen, bei der zu den herkömmlichen Richtrollen zusätzlich zumindest eine Druckwalze vorgesehen wird, die einer Richtrolle gegenüberliegend angeordnet ist und mit der eine einseitige Druckverformung des Metallbands bewirkt werden kann. Erfindungsgemäß wird der Spannungszustand im Metallband im Moment seiner Biegung über die Richtrolle ausgenutzt. Durch die Biegung wird ein Längszugspannungsverlauf über den Metallbandquerschnitt eingestellt, dessen maximaler Wert im Bereich der der Richtrolle gegenüberliegenden Oberfläche des Metallbands anliegt.The invention is based on the basic idea that the setting of mechanical properties, as has hitherto been carried out in the so-called temper rolling process, can also be set in a straightening process, for example a stretch bending process. For a straightening device is provided in addition to the conventional straightening rollers at least one pressure roller is provided, which is arranged opposite a straightening roller and with the one-sided compression deformation of the metal strip can be effected. According to the invention, the state of stress in the metal strip is utilized at the moment of its bending via the straightening roller. By bending a Längszugspannungsverlauf is set over the metal strip cross-section whose maximum value in the region of the straightening roller opposite surface of the metal strip is applied.
Indem nun diese Oberfläche mit einer Druckwalze belastet wird und damit zumindest der oberflächennahe Bereich mit einer zusätzlichen Spannung beaufschlagt wird, kann zumindest in diesem Bereich ein Spannungszustand eingestellt werden, der oberhalb der Fließgrenze liegt, so dass die gewünschten mechanischen Eigen- schatten, z. B. der n-Wert oder die Streckgrenze, aber auch die gewünschte Oberflächenbeschaffenheit eingestellt werden können.By now this surface is loaded with a pressure roller and thus at least the near-surface region is subjected to an additional voltage, at least in this area, a voltage state can be set, which is above the yield point, so that the desired mechanical Eigen shadow, z. B. the n-value or the yield strength, but also the desired surface finish can be adjusted.
Die erfindungsgemäße Richtvorrichtung weist mindestens eine erste und eine zweite Richtrolle auf, über die das zu richtende Metallband in der für das Biege- richten typischen mäandernden Bandführung geführt werden kann. Das Metallband wird unter teilweiser Umschlingung über die erste Richtrolle und dann unter teilweiser Umschlingung über die zweite Richtrolle geführt, wobei die erste Richtrolle mit einer ersten Oberfläche des Metallbands in Kontakt kommt und die zweite Richtrolle mit der dieser Oberfläche gegenüberliegenden Oberfläche des Metallbands in Kontakt kommt. Um den Grad der Biegung des Metallbands einstellen zu können, können die Richtrollen angestellt werden, also in Radialrichtung verlagert oder beispielsweise um eine senkrecht zur Längsachse stehenden Schwenkachse verschwenkt werden.The straightening device according to the invention has at least one first and one second straightening roller over which the metal band to be straightened can be guided in the meandering band guide typical for bending. The metal strip is passed partially looping over the first straightening roller and then partially wrapping over the second straightening roller, the first straightening roller contacting a first surface of the metal strip and the second straightening roller contacting the surface of the metal strip opposite that surface. In order to adjust the degree of bending of the metal strip, the straightening rollers can be employed, ie displaced in the radial direction or, for example, are pivoted about a pivot axis perpendicular to the longitudinal axis.
Erfindungsgemäß ist mindestens eine Druckwalze vorgesehen, die zu einer Richtrolle als Gegenwalze angeordnet ist und mit der eine einseitige Druckverformung des Metallbands bewirkt werden kann. Um den für die Einstellung der gewünschten mechanischen Eigenschaften bzw. der gewünschten Oberflächenbeschaffenheit notwendigen Spannungszustand auf der durch die Druckwalze belasteten Seite des Metallbands einstellen zu können, ist die Druckwalze einstellbar ausgebildet und weist insbesondere einen Wirkelement auf, mit dem die Druckwalze mit einem vorbestimmten Druck auf das Metallband gedrückt werden kann. Ergänzend oder alternativ können Stützwalzen vorgesehen sein, die die Druckwalze abstützen. Grundsätzlich kann der aus Dressiergerüsten bekannte Aufbau der Abstützung einer Druckwalze für die Abstützung der Druckwalze in der erfindungsgemäßen Richtvorrichtung vorgesehen sein.According to the invention, at least one pressure roller is provided, which is arranged to a straightening roller as a counter-roller and with which a one-sided compression deformation of the metal strip can be effected. In order to set the necessary for the setting of the desired mechanical properties or the desired surface condition tension on the loaded by the pressure roller side of the metal strip, the pressure roller is adjustable and in particular has an active element with which the pressure roller with a predetermined pressure the metal band can be pressed. Additionally or alternatively, support rollers may be provided which support the pressure roller. In principle, the construction of the support of a pressure roller known from skin-passing stands can be provided for the support of the pressure roller in the straightening device according to the invention.
Als einseitige Druckverformung wird insbesondere eine Druckverformung desAs a one-sided compression deformation is in particular a compression deformation of the
Metallbands verstanden, die im Gegensatz zum Walzen nicht das Metallband über seinen gesamten Querschnitt druckverformt. Insbesondere bevorzugt wird unter einer einseitigen Druckverformung eine Druckverformung verstanden, die von der mit der Druckwalze beaufschlagten Oberfläche eine Eindringtiefe von ca. 75% des Metallbandquerschnitts aufweist, insbesondere bevorzugt 50% des Metallbandquerschnitts. In einer bevorzugten Ausführungsform wird die Druckverformung auf den Bereich der Oberfläche beschränkt, auf die die Druckwalze einwirkt. Dieser oberflächennahe Bereich weist insbesondere mindestens die Tiefe der sogenannten Lüdersbänder auf. Als oberflächennaher Bereich wird insbesondere ein Bereich mit einer Eindringtiefe von maximal 10% des Metallbandquerschnitts, insbesondere bevorzugt 1% des Metallbandquerschnitts verstanden.Understood metal strip, which in contrast to rolling does not deform the metal strip over its entire cross-section. Particular preference is given to a one-sided compression deformation understood a compression deformation, which has a penetration of about 75% of the metal strip cross-section of the surface acted upon by the pressure roller, more preferably 50% of the metal strip cross-section. In a preferred embodiment, the compression set is limited to the area of the surface on which the pressure roller acts. This near-surface region has in particular at least the depth of the so-called Lüders bands. A region close to the surface is understood in particular to be a region having a penetration depth of at most 10% of the metal strip cross-section, particularly preferably 1% of the metal strip cross-section.
In einer bevorzugten Ausführungsform weist die Druckwalze eine glatte Oberfläche auf bzw. weisen bei mehreren eingesetzten Druckwalzen die Druckwalzen eine glatte Oberfläche auf. Dies erlaubt es, eine glatte Oberfläche zu erzeugen. Alternativ oder ergänzend kann eine Druckwalze oder können mehrere Druckwalzen eine texturierte Oberfläche aufweisen. Damit ist es möglich, eine Texturierung in dieIn a preferred embodiment, the pressure roller has a smooth surface or, if several pressure rollers are used, the pressure rollers have a smooth surface. This allows to create a smooth surface. Alternatively or additionally, a pressure roller or a plurality of pressure rollers may have a textured surface. This makes it possible to have a texturing in the
Metallbandoberfläche einzubringen. Unter einer texturierten Oberfläche wird insbesondere eine Oberfläche verstanden, auf der einzelne Erhebungen oder Vertiefungen vorgesehen sind. Insbesondere kann einer der Oberflächentypen Shotblast, EDT, EBT (deterministisch oder pseudostochastisch), Lasertex und Topochrom vor- gesehen sein.To introduce metal strip surface. A textured surface is understood in particular to mean a surface on which individual elevations or depressions are provided. In particular, one of the surface types Shotblast, EDT, EBT (deterministic or pseudo-stochastic), Lasertex and Topochrom can be provided.
In einer bevorzugten Ausführungsform können ferner eine erste Druckwalze mit einer glatten Oberfläche und eine zweite Druckwalze mit einer texturierten Oberfläche vorgesehen sein. Dies ermöglichst es, auf der einen Seite des Metallbands eine texturierte Oberfläche einzuprägen, während auf der gegenüberliegenden Seite des Metallbands eine glatte Oberfläche erzeugt wird.In a preferred embodiment, a first pressure roller with a smooth surface and a second pressure roller with a textured surface may further be provided. This makes it possible to emboss a textured surface on one side of the metal strip while creating a smooth surface on the opposite side of the metal strip.
In einer bevorzugten Ausführungsform der Erfindung weist die erste und/oder die zweite Richtrolle eine texturierte Oberfläche auf.In a preferred embodiment of the invention, the first and / or the second straightening roller has a textured surface.
In einer bevorzugten Ausführungsform können die Richtrollen und die Druckwalzen den gleichen Durchmesser aufweisen. Alternativ können die Druckwalzen größere oder kleinere Durchmesser als die Richtrollen aufweisen.In a preferred embodiment, the straightening rollers and the pressure rollers may have the same diameter. Alternatively, the pressure rollers may have larger or smaller diameters than the straightening rollers.
In einer bevorzugten Ausführungsform können eine oder mehrere Richtrollen oderIn a preferred embodiment, one or more straightening rolls or
Druckrollen als Messrolle ausgeführt werden. Insbesondere wird durch diese Messrolle die Temperatur-, Schubspannungs- und/oder Druckverteilung gemessen.Pressure rollers are designed as a measuring roller. In particular, the temperature, shear stress and / or pressure distribution is measured by this measuring roller.
Das erfindungsgemäße Richtverfahren sieht vor, dass das über eine Richtrolle gebogene Metallband auf der der Richtrolle gegenüberliegenden Oberfläche ein- seitig druckverformt wird. Insbesondere bevorzugt erfolgt diese Druckverformung nur im Bereich der Oberfläche des Metallbands.The straightening method according to the invention provides that the metal strip bent over a straightening roll is inserted on the surface opposite the straightening roll. is pressure-deformed on the side. Particularly preferably, this compression deformation takes place only in the region of the surface of the metal strip.
Insbesondere bevorzugt wird in dem Metallband durch das Biegen über die Richt- rolle eine Längszugspannungsverlauf über den Metallbandquerschnitt eingestellt, bei dem die an der der Richtrolle gegenüberliegenden Oberfläche des Metallbands anliegende Längszugspannung geringer ist als die Fließgrenze des Metallbands und dass durch eine auf diese Oberfläche einwirkende Druckwalze eine zusätzlicheParticularly preferably, a longitudinal tensile stress profile over the metal strip cross section is set in the metal strip by bending over the directional roll, in which the longitudinal tensile stress applied to the surface of the metal strip opposite the straightening roll is less than the yield strength of the metal strip and by a pressure roll acting on this surface an additional
Spannung erzeugt wird, so dass das Metallband im Bereich dieser Oberfläche mit einer Gesamtspannung oberhalb der Fließgrenze belastet wird.Stress is generated so that the metal strip is loaded in the region of this surface with a total stress above the yield point.
Das erfindungsgemäße Verfahren und die erfindungsgemäße Richtvorrichtung werden insbesondere bevorzugt in einem Streckbiegerichtprozess eingesetzt. Insbesondere bevorzugt sind den Richtrollen vor- bzw. nachgeordnet Brems- und Treibrollengruppen vorgesehen. Alternativ können das erfindungsgemäße Richtverfahren und die erfindungsgemäße Richtvorrichtung im Rahmen einer Form- schlussbiegemaschine eingesetzt werden.The method according to the invention and the straightening device according to the invention are particularly preferably used in a stretch bending process. Particularly preferred are the straightening rollers upstream and downstream braking and driving roller groups provided. Alternatively, the straightening method according to the invention and the straightening device according to the invention can be used within the scope of a positive-locking bending machine.
Insbesondere bevorzug wird das erfindungsgemäße Richtverfahren und die erfin- dungsgemäße Richtvorrichtung zum Richten von sogenannten Kohlenstoffstählen verwendet, die eine ausgeprägte Streckgrenze aufweisen und damit bei Zugverformung Lüdersbänder zeigen.In particular, the straightening method according to the invention and the straightening device according to the invention are used in particular for straightening so-called carbon steels, which have a pronounced yield strength and thus exhibit Lüders straps during tensile deformation.
Insbesondere bevorzugt wird das Richtverfahren unter Nutzung einer Messrolle angewendet. Diese Messrolle wird verwendet, um insbesondere die mechanischenParticularly preferably, the straightening method is applied using a measuring roller. This measuring roller is used in particular the mechanical
Eigenschaften und die Planheit der verarbeiteten Bänder einzustellen.Properties and the flatness of the processed tapes.
Nachfolgend wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Darin zeigen:The invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. Show:
Fig. 1 eine Richtrolle und die der Richtrolle gegenüberliegen angeordnete Druckwalze der erfindungsgemäßen Richtvorrichtung in einer schematischen Seitenansicht undFig. 1 is a straightening roller and the straightening roller opposite the pressure roller of the straightening device according to the invention in a schematic side view and
Fig. 2 den in dem Metallband durch das Biegen über die Richtrolle eingestelltenFig. 2 set in the metal strip by bending over the straightening roller
Längszugspannungsverlauf über den Metallbandquerschnitt.Longitudinal stress profile over the metal strip cross-section.
Die Richtvorrichtung dieses Ausführungsbeispiels weist mindestens zwei Richtrollen mit ihnen gegenüberliegen angeordneten Druckwalzen auf, von denen in der Fig. 1 nur die erste Paarung aus Richtrolle 1 und Druckwalze 2 dargestellt ist. Das zu richtende Metallband 3 ist über die Richtrolle 1 gebogen geführt und mit Längszugspannungen Fz beaufschlagt. Die der Richtrolle 1 gegenüberliegende Druckwalze 2 bewirkt eine einseitige Druckverformung des Metallbands 3.The straightening device of this embodiment has at least two straightening rollers with pressure rollers arranged opposite them, of which only the first pair of straightening roller 1 and pressure roller 2 are shown in FIG. That too directing metal strip 3 is guided bent over the straightening roller 1 and applied with Längszugspannungen F z . The rectifying roller 1 opposite pressure roller 2 causes a one-sided compression deformation of the metal strip. 3
In Fig. 2 ist der Längszugspannungsverlauf über den Querschnitt des Metallbands dargestellt. Zu erkennen ist, dass die Längszugspannung im Bereich der der Richtrolle 1 gegenüberliegenden Oberfläche am größten ist. In dem in diesem Bereich durch eine auf die Oberfläche einwirkende Druckwalze eine zusätzliche Spannung erzeugt wird, wird das Spannungsniveau in diesem Bereich über das dargestellte Längszugspannungsniveau erhöht und über die Fließgrenze angehoben, so dass die Einstellung von mechanischen Eigenschaften oder Oberflächenbeschaffenheiten erreicht werden kann. In Fig. 2 the Längszugspannungsverlauf is shown over the cross section of the metal strip. It can be seen that the longitudinal tensile stress is greatest in the area of the surface opposite the straightening roller 1. By creating an additional tension in this area by a pressure roller acting on the surface, the stress level in this area is increased above the illustrated longitudinal tension stress level and raised above the yield point so that the adjustment of mechanical properties or surface qualities can be achieved.

Claims

Patentansprüche: claims:
1. Richtvorrichtung für ein Metallband mit einer ersten Richtrolle und einer zweiten Richtrolle, die derart zueinander angeordnet sind, dass das Metallband unter teilweiser Umschlingung über die erste Richtrolle und dann unter teilweiser1. straightening device for a metal strip with a first straightening roller and a second straightening roller, which are arranged to each other such that the metal strip under partial wrap over the first straightening roller and then under partial
Umschlingung über die zweite Richtrolle geführt wird, dadurch gekennzeichnet, dass einer der Richtrollen (1) gegenüberliegend eine Druckwalze (2) angeordnet ist, mit der eine einseitige Druckverformung des Metallbands (3) bewirkt werden kann.Looping is performed on the second straightening roller, characterized in that one of the straightening rollers (1) opposite a pressure roller (2) is arranged, with which a one-sided compression deformation of the metal strip (3) can be effected.
2. Richtvorrichtung nach Anspruch 1 , dadurch gekennzeichnet, dass der ersten Richtrolle (1) gegenüberliegend eine erste Druckwalze (2) angeordnet ist, mit der eine einseitige Druckverformung auf einer ersten Seite des Metallbands (3) bewirkt werden kann, und der zweiten Richtrolle (1) gegenüberliegend eine zweite Druckwalze (2) angeordnet ist, mit der eine einseitige Druckverformung auf einer zweiten Seite des Metallbands (3) bewirkt werden kann.2. Straightening device according to claim 1, characterized in that the first straightening roller (1) opposite a first pressure roller (2) is arranged, with a one-sided compression deformation on a first side of the metal strip (3) can be effected, and the second straightening roller ( 1) is arranged opposite a second pressure roller (2), with which a one-sided compression deformation on a second side of the metal strip (3) can be effected.
3. Richtvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Druckwalze(n) (2) eine glatte Oberfläche aufweist/aufweisen.3. Straightening device according to claim 1 or 2, characterized in that the pressure roller (s) (2) has a smooth surface / have.
4. Richtvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Druckwalze(n) (2) eine texturierte Oberfläche aufweist/aufweisen.4. straightening device according to claim 1 or 2, characterized in that the pressure roller (s) (2) has a textured surface / have.
5. Richtvorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die erste und/oder die zweite Richtrolle (1) eine texturierte Oberfläche aufweist/aufweisen.5. straightening device according to one of claims 1 to 4, characterized in that the first and / or the second straightening roller (1) has / have a textured surface.
6. Richtvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß eine Druckwalze (2) und/oder eine Richtrolle (1) als Messrolle ausgebildet ist.6. straightening device according to one of claims 1 to 5, characterized in that a pressure roller (2) and / or a straightening roller (1) is designed as a measuring roller.
7. Richtverfahren für ein Metallband, dadurch gekennzeichnet, dass das über eine Richtrolle (1) gebogene Metallband (3) auf der der Richtrolle (1) gegenüberliegenden Oberfläche einseitig druckverformt wird.7. straightening method for a metal strip, characterized in that on a straightening roller (1) bent metal strip (3) on the straightening roller (1) opposite surface is pressure-deformed on one side.
8. Richtverfahren nach Anspruch 7, dadurch gekennzeichnet, dass die Druckverformung nur im Bereich der Oberfläche des Metallbands (3) bewirkt wird. Richtverfahren nach einem der Ansprüche 7 oder 8, dadurch gekennzeichnet, dass in dem Metallband (3) durch das Biegen über die Richtrolle (1) ein Längszugspannungsverlauf über den Metallbandquerschnitt eingestellt wird, bei dem die an der der Richtrolle (1) gegenüberliegenden Oberfläche des Metallbands (3) anliegende Längszugspannung geringer ist als die Fließgrenze, und dass durch eine auf diese Oberfläche einwirkende Druckwalze (2) eine zusätzliche Spannung erzeugt wird, so dass das Metallband (3) im Bereich dieser Oberfläche mit einer Gesamtspannung oberhalb der Fließgrenze belastet wird. 8. straightening method according to claim 7, characterized in that the compression deformation is effected only in the region of the surface of the metal strip (3). Straightening method according to one of claims 7 or 8, characterized in that in the metal strip (3) by bending over the straightening roller (1) a Längszugspannungsverlauf is set over the metal strip cross section, wherein the at the straightening roller (1) opposite surface of the metal strip (3) applied longitudinal tensile stress is less than the yield stress, and that an additional stress is generated by acting on this surface pressure roller (2), so that the metal strip (3) is loaded in the region of this surface with a total stress above the yield point.
EP07711483A 2006-02-10 2007-02-09 Straightening device and straightening method for a metal strip Not-in-force EP1984130B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006006530A DE102006006530A1 (en) 2006-02-10 2006-02-10 Straightening device and straightening method for a metal strip
PCT/EP2007/001114 WO2007090663A1 (en) 2006-02-10 2007-02-09 Straightening device and straightening method for a metal strip

Publications (2)

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EP1984130A1 true EP1984130A1 (en) 2008-10-29
EP1984130B1 EP1984130B1 (en) 2010-06-23

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EP07711483A Not-in-force EP1984130B1 (en) 2006-02-10 2007-02-09 Straightening device and straightening method for a metal strip

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EP (1) EP1984130B1 (en)
AT (1) ATE471771T1 (en)
DE (2) DE102006006530A1 (en)
WO (1) WO2007090663A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020106730A1 (en) 2020-03-12 2021-09-16 Manfred Wanzke Straightening process for strip, wire, profiles, rods, tubes, blanks, sandwich sheets and blanks, in which the material to be straightened initially experiences any, approximately uniform curvature, which is then finally straightened in the run

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1489722A (en) * 1965-08-23 1967-07-28 Loire Atel Forges Method and device for hardening and leveling a metal strip
US3605470A (en) * 1969-01-27 1971-09-20 Natalis H Polakowski Pressure assisted tension roller leveler
AU466254B2 (en) * 1971-09-14 1975-10-23 John Lysaght (Australia) Limited Method of flattening metal strip exhibiting a discontinuous yield point and suppressing the discontinuous yield point
DE4236657C2 (en) * 1992-10-30 2002-04-04 Betr Forsch Inst Angew Forsch Deflecting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007090663A1 *

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DE502007004187D1 (en) 2010-08-05
ATE471771T1 (en) 2010-07-15
WO2007090663A1 (en) 2007-08-16
DE102006006530A1 (en) 2007-08-16
EP1984130B1 (en) 2010-06-23

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