| 摘要 |
Disclosed is a friction stir welding method of welding a butted portion of works relatively easily and firmly with improved finish after the butted portion is tack-welded. In the method, a plurality of works (k) are placed to be butted, a plurality of V-shaped grooves (s) are intermittently formed along the butted portion (L), each of the grooves (s) is tack-welded by using a welding material by TIG welding or MIG welding, deposits in the tack-welded sections (t) are cut and removed so as to be substantially coplanar with a surface of the works (k), and then friction stir welding is continuously performed over the entire length of the butted portion (L), and thus, the works (k) are joined. <IMAGE> |
