摘要:
A welding tool (4) is inserted into an object (3) in a rotation-stopped state, and the welding tool (4) is rotated after insertion, thereby the object (3) is stirred by frictional heat. The welding tool (4) is inserted into the object (3) free of whirling. The welding tool (4) can be prevented from inserting in a position shifted from the target welding position. Namely, the welding tool (4) is precisely inserted in the target welding position and members (1,2) of the object (3) can be welded in the target welding position free of shifting.
摘要:
The present invention is a friction stir welding machine adapted to perform solid phase welding on a welding portion of materials to be welded, by pressing a welding tool (4) against the welding portion of the materials to be welded while rotating the welding tool (4), and forcing the welding tool (4) to be advanced into a softened portion which is softened by a frictional heat while stirring the softened portion, wherein a coating (50) made of aluminum nitride is formed on at least a region of the welding tool (4) to be in contact with the materials to be welded.
摘要:
The invention is a welding tool (20) used in a friction-stir welding apparatus for welding a plurality of members to be welded. The welding tool (20) includes: a tool holder (21) having a front end (30) and a base end, the base end being held by the friction-stir welding apparatus so as to be driven to rotate and move by the friction-stir welding apparatus; and a welding unit (22) of a wear resistant material adapted to be removably mounted on the front end (30) of the tool holder (21), the welding unit (22) mounted on the front end (30) of the tool holder (21) being immersed into a part of the members to be welded during a friction-stir welding.