Title:
CASTING ALUMINUM ALLOY, CAST COMPRESSOR IMPELLER COMPRISING THE ALLOY, AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2008/001758
Kind Code:
A1
Abstract:
A casting aluminum alloy which contains, in terms of mass%, 3.2-5.0% Cu, 0.8-3.0%
Ni, 1.0-3.0% Mg, 0.05-0.20% Ti, and up to 1.0% Si, the remainder being aluminum
and incidental impurities. This casting aluminum alloy is used to produce a
cast compressor impeller comprising a hub part, a hub-disk part extending from
the hub part in the radial directions and having a hub surface and a disk surface,
and blade parts disposed on the hub surface. Compared to conventional aluminum
alloys, the casting aluminum alloy has a moderate elongation and a high strength
at ordinary temperature and has high strength even at high temperatures.
Inventors:
KOGA, Masaaki (Hitachi Metals Precision Ltd.,1240-2, Hashimacho, Yasugi-sh, Shimane 14, 6920014, JP)
Application Number:
JP2007/062779
Publication Date:
January 03, 2008
Filing Date:
June 26, 2007
Export Citation:
Assignee:
HITACHI METALS PRECISION, LTD. (2-1 Shibaura 1-chome, Minato-ku Tokyo, 14, 1058614, JP)
株式会社日立メタルプレシジョン (〒14 東京都港区芝浦一丁目２番１号 Tokyo, 1058614, JP)
HITACHI METALS, LTD. (2-1 Shibaura 1-chome, Minato-ku Tokyo, 14, 1058614, JP)
株式会社日立メタルプレシジョン (〒14 東京都港区芝浦一丁目２番１号 Tokyo, 1058614, JP)
HITACHI METALS, LTD. (2-1 Shibaura 1-chome, Minato-ku Tokyo, 14, 1058614, JP)
International Classes:
C22C21/12; B22D18/04; B22D21/04; C22F1/057; F04D29/02; F04D29/28; C22F1/00
Attorney, Agent or Firm:
ASAMURA, Kiyoshi et al. (Room 331, New Ohtemachi Bldg. 2-1, Ohtemachi 2-chome, Chiyoda-k, Tokyo 04, 1000004, JP)
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