| 摘要 |
PROBLEM TO BE SOLVED: To suppress deterioration of durability of a conjugate without removing beads generated on an inner peripheral side of a joint area.SOLUTION: A conjugate 100 formed by jointing end faces 1a, 2a of two joint members 1, 2 by friction pressure welding comprises: hollow parts 4, 5 formed on at least one of two joint members 1, 2 and opening to a joint area 3 of the joint members 1, 2; and groove parts 7, 8 annularly formed on a position separated from the joint area 3 in an axial direction and on an inner peripheral face of the hollow parts 4, 5. |
