| 摘要 |
PURPOSE:To efficiently form a different material welded joint part by relatively rotationally moving members to be joined while holding an annular insert material which is freely rotably held between a set of the members to be joined of which at least one has a tubular shape. CONSTITUTION:One member 1 to be joined is made a rotating side and the other member 2 to be joined is made a stationary side. A holding member 4 is inserted to the butt side end of the member 2 to be joined on the stationary side and the annular insert material 3 is freely rotatably fitted thereto to be held therein. The member 1 is then rotated, by which the members are simultaneously frictionally welded. The formed burrs are removed to obtain the product. The different material welded joint part is efficiently formed by the above- mentioned method.
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