Friction stir welding method for pure aluminum tubular target material and aluminum alloy accessory

• Main Authors: LING PEIWEN, PAN JIE, YAO LIJUN, WANG XUEZE, GONG ZUGUANG
• Format: Patent
• Language: Chinese; English
• Published: 04.11.2022
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention provides a friction stir welding method for a pure aluminum tubular target material and an aluminum alloy accessory, which comprises the following steps of: (1) sequentially performing extrusion, stretching, straightening heat treatment and machining treatment on the pure aluminum tubular target material to obtain a pure aluminum tubular target material to be welded; the aluminum alloy accessory is machined, and a to-be-welded aluminum alloy accessory is obtained; and (2) the pure aluminum tubular target material to be welded and the aluminum alloy accessory to be welded are subjected to friction stir welding with the rotating speed of a stirring head being 1000-1500 r/min and the moving speed of a welding point being 0.03-0.05 m/min, and the finished tubular target material is obtained. The friction stir welding method is suitable for welding of the pure aluminum tubular target materials of various sizes, the welding efficiency is high, the welding quality is good, and large-scale industrial po