Bauelement und oszillierendes Reibschweissverfahren

摘要

A friction stir welding method where a welding of member is performed to restrain a generation of a clearance of a joint portion by the welding and to provide a joint member having a good joining portion. Abutting faces of a joining portion of members 10 and 11 are formed with slanting surfaces 12. A friction stir welding is carried out from an upper portion. The welding is carried out to position the slanting surfaces 12 by connecting or approaching a welding bead 30. Since the slanting surfaces 12 are provided, a flow-out of the member can be restrained, and further a bend of the joining portion can be restrained. Further, a tab is arranged at a beginning end and a finish end of the welding and then the welding is carried out.