Parts for use in rotary gear pump

Details Parts for use in rotary gear pump Parts for use in rotary gear pump

1989-12-19

1993-04-06

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

419 23, 419 11, 419 13, 419 14, 419 19, C22C 2104

Patent

active

051999714

ABSTRACT:
The present invention relates to parts, such as a drive gear and driven gear, for use in a rotary gear pump exhibiting good sliding characteristics against a pump case made of light metals such as aluminum alloys. These parts are obtained by subjecting aluminum alloy powders, which have been solidified at a cooling rate of 100.degree. C./sec or more, or aluminum alloy powders having particle diameters of 350 .mu.m or less, to powder compacting and hot extrusion and optionally further to hot forging, or subjecting the aluminum alloy powders to powder forging.

REFERENCES:
patent: 3787205 (1974-01-01), Church
patent: 3791800 (1974-02-01), McGee
patent: 3897618 (1975-08-01), Church
patent: 4347076 (1982-08-01), Ray et al.
patent: 4702885 (1987-10-01), Odani et al.
patent: 4808226 (1989-02-01), Adam
patent: 4818308 (1989-04-01), Odani et al.
patent: 4838936 (1989-06-01), Akechi

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