LASER HYBRID WELDING METHOD AND LASER HYBRID WELDING TORCH USING A ZINC AND/OR CARBON AND/OR ALUMINUM-CONTAINING ROD

WIPO Patent Application WO/2005/107996

A2

The invention relates to a method for welding coated sheet metal (3) by way of a laser hybrid welding method, whereby at least one laser method and one shielded arc-welding method are carried out, and a weld metal (12) is supplied to the weld by way of the shielded arc-welding method. The invention also relates to a laser hybrid welding torch for welding coated sheet metal (3), which comprises at least one laser (13) and at least one shielded arc unit (5) and a rod feeding device (11) for a welding rod (12). The aim of the invention is to provide a method or a device of the aforementioned kind which allows for reducing or completely avoiding inclusions such as are e.g. caused by the evaporation of the coating of the metal sheet (3). For this purpose, a clamping device (6) is used for positioning the coated metal sheet (3) without substantial gaps between the individual sheets. A material having a zinc and/or carbon and/or aluminum content is used as the weld metal or welding rod (12).

Miessbacher, Gerhard (Florianigasse 7/4, Weisskirchen, A-4616, AT)
Rührnössl, Manfred (Negrelliweg 23, Linz, A-4030, AT)

PCT/AT2005/000156

November 17, 2005

May 09, 2005

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FRONIUS INTERNATIONAL GMBH (Nr. 319, Pettenbach, A-4643, AT)
Miessbacher, Gerhard (Florianigasse 7/4, Weisskirchen, A-4616, AT)
Rührnössl, Manfred (Negrelliweg 23, Linz, A-4030, AT)

B23K9/173; B23K26/02; B23K26/14; B23K26/24; B23K26/32; B23K26/42; B23K28/02; B23K35/02; B23K35/30; (IPC1-7): B23K26/00

SONN & PARTNER PATENTANWÄLTE (Riemergasse 14, Wien, A-1010, AT)

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