Process for making composite bearing material

Details Process for making composite bearing material Process for making composite bearing material

B - Operations, Transporting

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13/10, 253/10, 3

B22F 3/18 (2006.01) B22F 7/04 (2006.01) C23C 24/10 (2006.01) F16C 33/14 (2006.01)

Patent

CA 1058149

PROCESS FOR MAKING COMPOSITE BEARING MATERIAL Abstract of the Disclosure A process for making a bimetallic bearing material comprising a hard metal backing strip having a leaded copper or leaded bronze bearing lining tenaciously bonded to at least one face thereof which includes the steps of applying a layer of a prealloyed metal powder of a controlled composition and particle size on one face of the backing strip, sintering the composite material in a reducing atmosphere at a temperature ranging from 1450°F to 1600°F, cooling the sintered composite strip to a temperature of 1000°F to 1200°F and densifying the composite strip by roll com- paction to 100% of theoretical density in a manner to effect further sintering and enhancement of the bond strength between the backing material and lining. The compacted strip thereafter is allowed to cool to a temperature below about 800 F in a nonoxidizing protective environment whereafter it can be fabricated into various bearing components, such as thrust washers, bushings, shell bearings and the like.

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