Compressor scroll made of silicon containing aluminum alloy

Details Compressor scroll made of silicon containing aluminum alloy Compressor scroll made of silicon containing aluminum alloy

1994-09-23

1995-12-26

Vrablik, John J.

Rotary expansible chamber devices

Working member has planetary or planetating movement

Helical working member, e.g., scroll

418179, F04C 1804

Patent

active

054782201

ABSTRACT:
The present invention provides an Al--Si based sintered alloy of high strength and high ductility, a method for production thereof and use thereof. The alloy comprises 1-45% of Si, 0.1-20% of an element of Group IIIa, 0.01-5% of at least one element of Groups IVa and Va, the balance of substantially Al. This alloy can further contain at least one of 0.01-5% of Cu, 0.01-5% of Mg, 2.0% or less of Fe, 1.5% or less of Mn and 1.5% or less of Co and the oxygen content is reduced to 0.15% or less by sintering under vacuum. The present invention is applied to automobile parts such as a piston and scroll compressors. The alloy has a tensile strength of about 40 kg/mm.sup.2 or higher and an elongation of 1.5% or more at 150.degree. C.

REFERENCES:
patent: 4696084 (1987-09-01), Hirano et al.
patent: 4838936 (1989-06-01), Akechi
patent: 4908077 (1990-03-01), Nakamura et al.
patent: 5292358 (1994-03-01), Miura et al.

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