Multilayer sliding material for high-speed engine and method of

Details Multilayer sliding material for high-speed engine and method of Multilayer sliding material for high-speed engine and method of

1992-02-12

1994-07-12

Walsh, Donald P.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

428553, 428554, 428555, 419 28, 419 43, B22F 704

Patent

active

053287720

ABSTRACT:
A multilayer sliding material for high-speed engine, comprising a steel back metal, a Cu or Cu-base alloy plating layer, a Cu-Pb bearing alloy layer, and an overlay, said steel back metal having 155 or more of Vickers hardness and 42 kgf/mm.sup.2 or more of 0.2% yield strength, a Cu-Pb bearing alloy layer containing 15-30 wt % of Pb and 0.5-2.0 wt % of Sn and having 0.25 cal/cm.s..degree. C. or more of thermal conductivity, 75 or more of Vickers hardness and 18 kgf/mm.sup.2 or more of tensile strength, said overlay of a lead base alloy containing 2-8 wt % of Sn and 3-11 wt % of In and having more than 250.degree. C. of melting start temperature. The material has a superior antiseizure property at high speed of engine. In particular, the rising of the melting start temperature of the metal of the overlay and the thermal conductivity of the bearing alloy provides a superior sliding property of plain bearing at high speed of engine.

REFERENCES:
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patent: 4978587 (1990-12-01), Mori et al.
patent: 4999257 (1991-03-01), Imai
Teaching material entitled "Challenge to new bearing material needed by demand for high performance" for Lecture of Japanese Mechanical Society, pp. 47 to 52, No., 1 & 2, 1990.
Machine Design, vol. 35, No. 2, pp. 63 to 71, Feb. 1990.

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