| 摘要 |
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 DEG F to 1600 DEG F, cooling the sintered composite strip to a temperature of 1000 DEG F to 1200 DEG F and densifying the composite strip by roll compaction 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 DEG 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. |
