Patent ID: 6419144
Filing Date: 2002-07-16
Classification: B23K,B23Q,Y10T

Abstract:
A friction stir welding method, comprising:abutting an end portion of a first extruded frame member and an end portion of a second extruded frame member, to provide an abutted portion, an extruded direction of said second extruded frame member being arranged orthogonally to an extruded direction of said first extruded frame member in said abutting; at an end portion of a width direction of said first extruded frame member, when said first extruded frame member is viewed from said extruded direction, providing a protrusion portion which protrudes in a thickness direction of said first extruded frame member, wherein, in said abutting, said end portion of said second extruded frame member is abutted to said end portion of a width direction of said first extruded frame member; and in a condition in which a rotary tool is inserted into said protrusion portion and said abutted portion from a side of said protrusion portion, rotating said rotary tool, and moving relatively said rotary tool along to said abutted portion, to perform said friction stir welding.