Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Controlled cooling after sintering
Patent
1989-05-26
1990-12-11
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Controlled cooling after sintering
419 38, 148125, B22F 100
Patent
active
049769162
ABSTRACT:
A method for producing a ferrous sintered alloy product available for a vane used in a rotary compressor. The method comprises the steps of preparing metal powder mixture primarily containing iron, compacting the powder mixture to obtain a powder compact, sintering the powder compact to obtain a sintered body, subjecting sub-zero treatment to the sintered body, and tempering the sintered body. The sintered alloy product is used as a vane slidably disposed in a vane groove of the rotary compressor whose cooling medium is maintainable without deterioration of its property.
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Bhat Nina
Lechert Jr. Stephen J.
Nippon Piston Ring Co. Ltd.
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