Patent ID: 6568872
Filing Date: 2003-05-27
Classification: B23K,Y10T

Abstract:
A connection member adapted for and capable of connecting two members by friction stir welding, comprising a plate extending in a width direction and having two opposed ends in the width direction, wherein to the ends of the plate in the width direction of the plate, the plate has respective raised portions comprised of a first raised portion and a second raised portion which project in the same direction as a thickness direction of the plate;the first raised portion at one end of the plate has a larger width, in the width direction, than the width of the second raised portion at the other end of the plate, wherein the connection member is capable of being friction stir welded at the first raised portion and the second raised portion to join the two members, by a friction stir welding process using a rotary tool having (1) a smaller diameter portion, which is inserted into the connection member in the thickness direction of the plate, and (2) a larger diameter portion, wherein the first raised portion, having the larger width, is capable of, and adapted for, overlapping with one of the two members to form an overlapped portion which is friction stir welded using the rotary tool, and wherein the second raised portion is capable of, and adapted for, abutting the other of the two members to form an abutted portion which is friction stir welded using the rotary tool.