STEEL WELDING COMPONENT WITH ALUMINUM OR ALUMINUM ALLOY COATING, AND PREPARATION METHOD THEREFOR

• Main Authors: SHI, Lei, PAN, Hua, JIANG, Haomin, SU, Yongchao, LEI, Ming
• Format: Patent
• Language: English; French; German
• Published: 17.06.2020
• Subjects: ALLOYS; CHEMISTRY; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; FERROUS OR NON-FERROUS ALLOYS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; METALLURGY; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WELDING; WORKING BY LASER BEAM

A steel welding component with an aluminum or aluminum alloy coating, using a steel welding blank with an aluminum or aluminum alloy coating. The welding blank is composed of a steel substrate (1) and coatings (2, 2'); the coating (2) comprises an intermetallic compound alloy layer (21) which contacts the substrate (1), and a metal alloy layer (22) on the intermetallic compound alloy layer (21); on at least one of the coating surfaces of the welding blank, the coating (2) within an area (3) to be welded of the welding blank has been totally removed, and an end face (23) of the coating (2) on the side of the coating within the area (3) to be welded removed has an angle of β with a plane vertical to a surface (11) of the substrate (1) which is parallel to the welding seam, wherein β is 0-80°. Also provided are welding and preparation methods for the steel welding component. The steel welding blank prepared by the method ensures the tensile strength, elongation, and corrosion resistance of a hot-stamped welded joint.