| 摘要 |
PROBLEM TO BE SOLVED: To provide a friction-agitation joining method capable of preventing both the fixing of a backing and root cracks and excellently joining in the butt joining of an aluminum stock. SOLUTION: In the friction-agitation joining method wherein joining members 1, 2 consisting of aluminum are butted, a rotating probe 12 is inserted into the butting part 3 or its vicinity from one surface side of joining members 1, 2, and joining members 1, 2 are butt joined by relatively transferring the probe 12 under the inserted state along the butting part 3 while softening and agitating the part coming into contact with the probe 12 with frictional heat, both joining members 1, 2 are butt joined under the state that the backing 4 having low affinity to softened joining members 1, 2 are pressed to the other surface side of joining members 1, 2 along the butting part 3. The backing 4 is composed of one or two or more of carbon materials, metallic oxides, building fire insulating materials and roughed metals. |
