laser / arc hybrid welding methods for aluminized steel parts using gamma elements and a gas containing less than 10 nitrogen or oxygen

摘要

laser / arc hybrid welding methods for aluminized steel parts using gamma elements and a gas containing less than 10 198 of nitrogen or oxygen. The invention relates to a hybrid laser / arc welding method utilizing an electric arc and a laser beam that are combined together in a single welding run to which molten metal is supplied by casting a filler wire, wherein the run A welding gas is provided on at least one piece of steel including an aluminum surface coating, and a shielding gas is used, characterized in that the filler wire contains at least 3 198 by weight of one or more elements. gases, in particular the gamma elements selected from c, mn, ni and n, and the shielding gas consists of helium and / or argon with the addition of at least 10 198 vol. nitrogen or oxygen. The method of the invention is particularly suitable for welding end-welded flanks used in the automobile manufacturing field or for pipe welding.