EP1984130A1 - Dispositif de direction et procédé de direction pour bande de métal - Google Patents

Dispositif de direction et procédé de direction pour bande de métal

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)
English (en)
Other versions
EP1984130B1 (fr
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.)
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
Application filed by BFI VDEH Institut fuer Angewandte Forschung GmbH filed Critical BFI VDEH Institut fuer Angewandte Forschung GmbH
Publication of EP1984130A1 publication Critical patent/EP1984130A1/fr
Application granted granted Critical
Publication of EP1984130B1 publication Critical patent/EP1984130B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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)
EP07711483A 2006-02-10 2007-02-09 Dispositif de direction et procédé de direction pour bande de métal Not-in-force EP1984130B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006006530A DE102006006530A1 (de) 2006-02-10 2006-02-10 Richtvorrichtung und Richtverfahren für ein Metallband
PCT/EP2007/001114 WO2007090663A1 (fr) 2006-02-10 2007-02-09 Dispositif de direction et procédé de direction pour bande de métal

Publications (2)

Publication Number Publication Date
EP1984130A1 true EP1984130A1 (fr) 2008-10-29
EP1984130B1 EP1984130B1 (fr) 2010-06-23

Family

ID=38093049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07711483A Not-in-force EP1984130B1 (fr) 2006-02-10 2007-02-09 Dispositif de direction et procédé de direction pour bande de métal

Country Status (4)

Country Link
EP (1) EP1984130B1 (fr)
AT (1) ATE471771T1 (fr)
DE (2) DE102006006530A1 (fr)
WO (1) WO2007090663A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020106730A1 (de) 2020-03-12 2021-09-16 Manfred Wanzke Richtverfahren für Band, Draht, Profile, Stäbe, Rohre, Zuschnitte, Sandwichbleche und Platinen, in welchem das zu richtende Material eingangs eine beliebige, annähernd gleichmäßige Krümmung erfährt, die nachfolgend im Durchlauf final gerichtet wird

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1489722A (fr) * 1965-08-23 1967-07-28 Loire Atel Forges Procédé et dispositif d'écrouissage et de planage d'une bande de métal
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 (de) * 1992-10-30 2002-04-04 Betr Forsch Inst Angew Forsch Umlenkmeßrolle

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
WO2007090663A1 (fr) 2007-08-16
DE102006006530A1 (de) 2007-08-16
ATE471771T1 (de) 2010-07-15
DE502007004187D1 (de) 2010-08-05
EP1984130B1 (fr) 2010-06-23

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