Patent ID: 7677427
Filing Date: 2010-03-16
Classification: B23K

Abstract:
1. A welding tool used in a friction-stir welding apparatus for welding a plurality of members to be welded, comprising: a tool holder having a front end and a base end, said base end being held by said friction-stir welding apparatus so as to be driven to rotate and move by said friction-stir welding apparatus; a welding unit of a wear resistant material including a mounting section that is removably inserted in said front end of said tool holder, said welding unit removably inserted in said front end of said tool holder being immersed into a part of said members to be welded during a friction-stir welding; and a fixing member adapted to be mounted on said tool holder for removably fixing said welding unit to said tool holder, said fixing member abutting said mounting section of said welding unit on a surface of said mounting section that is substantially parallel to a surface of a member to be welded.