COPPER-BASED BEARING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a copper-based bearing material with a titanium or titanium alloy back plate by a continuous sintering method and a continuous roll pressure-welding method suitable for mass production and manufacturable at a low cost. SOLUTION: The back plate 3 is formed of Ti or Ti alloy, and an intermediate layer 4 formed of Fe or Fe-Cr alloy is provided between a copper-based bearing layer 2 and the back plate 3. The direct contact of Ti or Ti alloy with metal liable to form an intermetallic compound or with gas is thereby prevented to suppress the formation of the intermetallic compound or a compound with gas. Furthermore, since Fe and Cr used for the intermediate layer 4 are not liable to form an intermetallic compound with Ti at a heat treatment temperature after sintering and pressure welding of a Cu alloy, the copper-based bearing material 1 using Ti or Ti alloy for the back plate 3 can be manufactured without lowering the strength of the copper-based bearing material 1 by the continuous sintering method or the continuous roll pressure-welding method manufacturable at a low cost while allowing sintering and heat treatment. COPYRIGHT: (C)2004,JPO