Drehendes Reibungschweissverfahren

摘要

An abutted portion of face plates 12b and 22b of frame members 10 and 20 is carried out a friction stir joining. With the abutting, a raised portion 20c of an end portion of the face plate 20b of the frame member 20 is inserted into a recessed portion 12c of an end portion of the face plate 12b of the frame member 10. By this inserting-into, to an outer face of one face side of the face plates 12b and 20b there is no difference step. Next, to the inserting-into portion a rotary tool 250 is inserted from the raised portion 16 and 26 side of one face side of the face plates 12b and 20b, a side of another face 12bc and 20bc of the face plates 12b and 20b is carried out flatly by the friction stir joining. Accordingly, the abut joining can be carried out without the step-wise difference.