| 摘要 |
A Cu-Sn mixture powder for use as a feed powder for powder metallurgy, characterized by comprising a powder mixture of a powder obtained by pulverizing a partly alloyed Cu-Sn sinter and an electrolytic copper powder; and a process for producing a Cu-Sn mixture powder for use as a feed powder for powder metallurgy, characterized by sintering a copper powder and a tin powder to produce a partially alloyed Cu-Sn sinter, pulverizing the sinter to obtain a Cu-Sn pulverization powder, and then blending this Cu-Sn pulverization powder with an electrolytic copper powder. The Cu-Sn powder, when used in producing a feed powder for powder metallurgy for, e.g., sintered oil-impregnated bearings, gives a powder which has enhanced moldability with respect to compact density, Rattler value, etc., attains improved sinter properties including radial crushing strength, and can attain a cost reduction. |
