Rotation welding tool for friction stir welding, as well as friction stir welding method using the same

摘要

PROBLEM TO BE SOLVED: To provide a rotary joining tool easy in control, comparatively inexpensive, affording favorable joining strength and used for joined members of different plate thicknesses, and to provide a friction stir joining method using the same.;SOLUTION: Provided are the rotary joining tool for friction stir joining adapted to friction-stir-join the joined members of different plate thicknesses, wherein an upper base part, an upper shoulder, a lower base part, a lower shoulder and a probe between the shoulders are configured to be integrally rotatable, surfaces of the upper shoulder and the lower shoulder define a convex curve toward an abutment part, one or more grooves are formed in the convex curve so as to run from an outer periphery to the center and to flow the plasticized joined members into it, the abutment part of the joined members is nipped between the upper shoulder and the lower shoulder so as to set the probe parallel with abutment faces, and the probe moves along the abutment part while rotating with the upper base part and the lower base part out of contact with the joined members. A method of manufacturing the same is also provided.;COPYRIGHT: (C)2013,JPO&INPIT