Patent ID: 6471112
Filing Date: 2002-10-29
Classification: B23K,Y10T

Abstract:
A friction stir welding method, comprising the steps of:removing a part of a rib provided between two plates at an end portion in an extruded portion of a hollow frame member; abutting an extruded frame member to said end portion of said hollow frame member, to provide an abutted portion; inserting an end portion of said extruded frame member between said two plates at the abutted portion; arranging the extruding direction of said hollow frame member substantially perpendicular to an extruding direction of said extruded frame member; modifying the thickness of one of said hollow frame members and said extruded frame member so that the thickness of said hollow frame member is substantially the same thickness as that of said extruded frame member at said abutted portion; and carrying out a friction stir welding on said abutted portion from an outer portion of said extruded frame member.