| 摘要 |
PURPOSE:To join sintered alloy and a steel member perfectly by bringing the sintered alloy and steel member into direct contact and contacting highly heat conductive alloy with the part other than these welded members as a heat sink, and melting and solidifying the contact face to slitlike form by a high energy beam. CONSTITUTION:Inner face and upper and lower faces of a steel ring 6 is carburized and hardened, and a sintered alloy ring 5 is fitted to outside of the steel ring by cooling and brought into closely contact. A steel cradle 8 is set to inner periphery of the steel ring 6 using a highly heat conductive alloy as a heat sink, and a copper jig 9 is stuck fast to the outer periphery of the sintered alloy. An electron beam or a laser beam is irradiated onto the contact face of the sintered alloy ring 5 and steel ring 6 in nonoxydizing atmosphere and a part or whole of the contact face is molten and solidified to slitlike form and joined. |
