Bearing materials

Details Bearing materials Bearing materials

C - Chemistry, Metallurgy

22

F

75/86

C22F 1/04 (2006.01) C22C 21/00 (2006.01)

Patent

CA 1270383

ABSTRACT BEARING MATERIALS Bearing materials and a process for the manu- facture thereof are described. The bearing alloys are aluminium-based and comprise the following com- positions expressed in weight per cent; 8 to 35 tin, 1 to 3 copper, 2 to 10 silicon and remainder aluminium apart from incidental impurities. The alloys are preferably bonded to steel. The composite material is then raised in temperature preferably within the range 450 to 500°C for a total time between 90 seconds and 10 minutes and then cooled at a cooling rate of at least 50°C/min. for at least part of the temperature drop to ambient temperature. The composite material may optionally be additionally heat-treated thereafter to further improve the properties.

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