FRICTION PRESSURE-WELDING METHOD AND CONJUGATE

PROBLEM TO BE SOLVED: To provide a friction pressure-welding method and a conjugate which enable an amount of a base material extruded from a junction to be secured to obtain a favorable joint face even when one junction member secures not many of shrinking margins.SOLUTION: A first junction member 1, having an annular junction end face and having a recess 3 annularly formed in the outer periphery in a vicinity of the junction end face, and a second junction member 2, having an annular junction end face and having an annular junction end face with a wall thickness t2 substantially equal to the wall thickness t1 of the junction end face of the first junction member 1, are prepared to bring the first junction member 1 into friction pressure-welding with the second junction member 2, and the outer periphery of a junction is cut by friction pressure-welding so that the wall thickness t5 of the junction by friction pressure-welding may become thinner than the wall thicknesses t1,t2 in the junction end face at the preparation stage of the first junction member 1 and that of the second junction member 2.SELECTED DRAWING: Figure 1 【課題】一方の接合部材に多くの縮み代を確保しなくても良好な接合面を得るために接合部から押し出される母材の量を確保することが可能な摩擦圧接方法及び接合体を提供する。【解決手段】環状の接合部端面を有し、接合部端面近傍における外周に環状に形成された凹部３を有する第一の接合部材１と、環状の接合部端面を有し、第一の接合部材１の接合部端面の肉厚ｔ１と実質的に同じ肉厚ｔ２の接合部端面を有する第二の接合部材２とを準備し、第一の接合部材１と第二の接合部材２を摩擦圧接し、第一の接合部材１及び第二の接合部材２の準備段階における接合部端面における肉厚ｔ１、ｔ２よりも摩擦圧接による接合部の肉厚ｔ５が薄くなるように摩擦圧接による接合部の外周の切削加工を行う。【選択図】 図１