HYBRID ARC/LASER-WELDING METHOD FOR ALUMINIZED STEEL PART USING A GAS INCLUDING NITROGEN AND/OR OXYGEN

摘要

The invention relates to a hybrid laser/arc-welding method using an electric arc and a laser beam that are combined together within a single welding bath, to which molten metal is supplied by melting a filler wire, wherein the welding bath is provided on at least one steel part including an aluminum surface coating, and a protective gas is used, characterized in that the protective gas consists of at least one main compound selected from argon and helium, and of at least one additional compound selected from nitrogen and oxygen.