| 摘要 |
PURPOSE:To provide resistances for baking and wear at high load, by adding Si, Sr and small quantities of Cu, Ni, Mn to Al-Sn alloy, to ppt. Si particles spherically into Al matrix and to ppt. Al compds. in rod state. CONSTITUTION:Bearing alloy is composed of 3-35wt% Sn, 0.1-10% Pb, 0.1-6% Si, <=3% Sr, 0.1-5% total of >= one kind among Cu, Ni, Mn, and the balance Al substantially. Alloy of the compsn. is cast, ingot is cold worked, then heat treated, to ppt. Si particles spherically, spheroidally or shape approached thereto into Al matrix. Further, compds. of Cu, Ni, Mn with Al are pptd. in rod or fiber state. The bearing alloy is superior in lubricative property, has good mechanical property at high temp. of about 100-250 deg.C and is sufficiently durable for severe using condition under high load operation.
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