Patent ID: 6354483
Filing Date: 2002-03-12
Classification: B23K,Y10T

Abstract:
A friction stir welding method for use in welding a first frame member and a second frame member, wherein said first frame member and said second frame member are abutted and each have a first face plate, a second face plate disposed in parallel to said first face plate and a third plate for connecting said first face plate and said second face plate, said welding method comprising the steps of:welding said second face plates together from a side of said first face plate; arranging a respective end portions of a connection member between an end portion of the first face plate of the first frame member and said first face plate of said second frame member, including inserting one end of said connection member into a groove which opens toward said second frame member in an end portion of said first face plate of said first frame member; temporarily fixing the other end of said connection member to an end portion of said first face plate of said second frame member; and carrying out a friction stir welding on said end portion of said first face plate of said first frame member and one end of said connection member and carrying out a friction stir welding on an end portion of said first face plate of said second frame member and the other end of said connection member.