Patent ID: 6613447
Filing Date: 2003-09-02
Classification: B23K,B23Q,Y10T

Abstract:
A structural body, comprising two extruded frame members friction stir welded to each other, wherein:one side face of each of the two extruded frame members is abutted to each other, forming an abutted portion, to form substantially a same face; said abutted portion is welded from a side of said one side face by friction stir welding; a protrusion portion which protrudes from said one side face is provided at a welding portion according o the friction stir welding, to one side face of said two extruded frame members; and said protrusion port on is provided in advance to said one side face of said two extruded frame members, and wherein: each of said two extruded frame members has a rib respectively; said rib is provided on a side of said protrusion portion; and in one of said two extruded frame members, said rib at the vicinity of said welding portion is remove by cutting off said rib.