METHOD FOR MANUFACTURING EQUAL-STRENGTH STEEL THIN-WALL WELDING COMPONENT WITH ALUMINUM OR ALUMINUM-ALLOY PLATING

摘要

Disclosed is a method for manufacturing an equal-strength steel thin-wall welding component with an aluminum or aluminum-alloy plating. A steel plate to be welded comprises a base body and at least one plating on a surface of the base body; the plating comprises an intermetallic compound alloy layer in contact with the base body and a metal alloy layer on the intermetallic compound alloy layer; the plating is not removed or thinned before or during welding; and by presetting a welding gap and using a carbon-manganese-steel welding wire, a welding process and protective gas for welding, the tensile strength of a welding seam of the welding component after hot stamping processing is greater than the tensile strength of a base metal, and the elongation of a welded joint is greater than 4%, such that application requirements of the equal-strength welding component in the field of hot stamping are met.Further disclosed are a welding wire for welding and an equal-strength steel thin-wall welding component with an aluminum or aluminum-alloy plating.