Scroll made of aluminum alloy
AssigneeOshida Patent Agency
InventorsKouji Nakamura, Yukiji Ohshima, Hajime Kamio
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Abstract
Forged compressor scrolls are made of an aluminum-silicon alloy consisting essentially of 8.5 to 10.5% silicon and not more than 0.2% antimony wherein the silicon is present as eutectic particles having an average particle diameter in the range of 2 to 8 .mu.m, the particles being uniformly dispersed with a degree of dispersion in the range of 10,000 to 30,000 particles/mm.sup.2. Such scrolls are free of internal defects and have reduced susceptibility to seizing and cracking combined with high abrasion resistance.
Claims6
Compressor scrolls forged from an aluminum-silicon type alloy consisting essentially of 8.6 to 10.5% by weight of silicon the silicon being present as eutectic particles having an average particle diameter in the range of 2 to 8 .mu.m, which particles are uniformly dispersed with a degree of dispersion is in the range of 10,000 to 30,000 particles/mm.sup.2.
Dependencies are inferred from the claim text.