Process for producing sintered body and magnet base

Details Process for producing sintered body and magnet base Process for producing sintered body and magnet base

1994-10-04

1996-01-30

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75950, 428682, 428544, B22F 312, B22F 500

Patent

active

054877733

ABSTRACT:
A process for producing a sintered body, comprising inserting a separately formed first molded article in a mold for injection molding, injection-molding a material identical to or different from that of the first molded article in the mold so that the injected material and the first molded article form together a second molded article, degreasing the second molded article, sintering the degreased article thereby obtaining a sintered body having a difference in shrinkage during the sintering between the first molded article and the injection molded portion of the second molded article other than the first molded article portion being 5% or less. The resulting sintered body is useful as a magnet base.

REFERENCES:
patent: 4562092 (1985-12-01), Weich, Jr.
patent: 4602952 (1986-07-01), Greene et al.
patent: 4602956 (1986-07-01), Partlow et al.
patent: 5032352 (1991-07-01), Meeks et al.
Patent Abstracts of Japan, vol. 15, No. 174, Jul. 6, 1989 & JP-A-3-039405 (Mitsubishi Heavy Metal Ind KK), Feb. 20, 1991.
Patent Abstracts of Japan, vol. 15, No. 336, Aug. 20, 1991 & JP-A-3-130306 (Seiki Epson), Jun. 4, 1991.
Derwent Publications Ltd., London, GB; AN 91-349234 & JP-A-3 232906 (Daido Tokushoko KK), Oct. 16, 1991.

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