Oil pump made of aluminum alloys

Details Oil pump made of aluminum alloys Oil pump made of aluminum alloys

1993-06-29

1994-08-16

Dean, Richard O.

Rotary expansible chamber devices

Specific material

420534, 420535, 148437, F04C 210, F04C 2900

Patent

active

053381688

ABSTRACT:
An oil pump comprises a casing of aluminum alloy and at least one rotor housed therein. The rotor is produced by powder metallurgical with a rapidly solidified aluminum alloy comprising, by weight, of 5 to 25% of Si, up to 15% of one or more alloy elements selected from the group consisting of 3 to 10% of Fe, 3 to 10% of Ni and 1 to 8% of Cr, and the balance of Al and inevitable impurities. The casing may be produced by powder metallurgy or ingot metallurgy with an aluminum alloy consisting essentially, by weight, of 5 to 25%, preferably 5 to 17%, of Si, 1 to 5% of Cu, 0.2 to 1.5% of Mg, 0.2 to 1% of Mn, and the balance of Al and inevitable impurities. The rotor and casing are so combined that the sum of the Si content of said rapidly solidified aluminum alloy for casing and that of said rapidly solidified aluminum alloy for rotor being equal to or more than 15 percent by weight.

REFERENCES:
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patent: 4838936 (1989-06-01), Akechi
patent: 5199971 (1993-04-01), Akechi et al.
Patent Abstracts of Japan, vol. 12, No. 260 (M-720) Jul. 21, 1988 & JP-A-63 041 690 (Diesel Kiki Co. Ltd.) Feb. 22, 1988 * abstract*.
Patent Abstracts of Japan, vol. 12, No. 283 (C-518) Aug. 3, 1988 & JP-A-63 060 265 (Mitsubishi Metal Corp.) Mar. 16, 1988 * abstract*.
Patent Abstracts of Japan, vol. 13, No. 420 (M-872) Sep. 19, 1989 & JP-A-11 59 479 Mazda Motor Corp.) Jun. 22, 1989 * abstract*.
Chemical Abstracts, vol. 111, No. 18, Columbus, Ohio, U.S., abstract No. 158773, Akechi, Kiyoaki, "Extrusion of Aluminum Alloy for Rotors", * abstract *, & JP-A-1-005 621 (Sumitomo Electric Ind. Ltd.), Jan. 10, 1989.
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