Aluminum alloy impeller and manufacturing method of the same

Details Aluminum alloy impeller and manufacturing method of the same Aluminum alloy impeller and manufacturing method of the same

1997-05-09

1999-05-11

Davis, Robert

Alloys or metallic compositions

Aluminum base

420550, 420552, 148437, 148688, 148689, 148691, 148692, F02B37/00

Patent

active

059025468

ABSTRACT:
There is disclosed a high heat resistant aluminum alloy impeller, which is suitably used as an impeller, especially for a centrifugal compressor, and for the rotor and the blade of a turbo molecular pump or the scroll of a scroll compressor. Also, a method for manufacturing this aluminum alloy impeller is disclosed. The impeller is composed of an Al--Fe rapid solidification aluminum alloy, which is produced by a spray forming process for spraying a molten metal with inert gas and rapidly solidifying the metal at a cooling speed of 10.sup.2 .degree. C./sec. or higher while simultaneously deposing the metal. The rapid solidification aluminum alloy is subjected to hot extrusion processing within a temperature range of 200.degree. C. to 600.degree. C. and further subjected to hot forging.

REFERENCES:
patent: 4661172 (1987-04-01), Skinner et al.
European Search Report for EP 97 30 3949 completed Sep. 3, 1997 by G. Ashley.

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