Powder metallurgy processes – Powder metallurgy processes with heating or sintering – Making composite or hollow article
Patent
1990-09-21
1991-07-16
Lechert, Jr., Stephen J.
Powder metallurgy processes
Powder metallurgy processes with heating or sintering
Making composite or hollow article
419 16, 419 38, 419 42, 419 49, 419 66, 419 68, 264 60, 264 65, 264125, B22F 700
Patent
active
050323520
ABSTRACT:
The method of consolidating a powder material to form a composite part includes forming a pattern which is a scaled-up version of the part to be formed; employing the pattern to produce a flexible mold with interior conformation matching the pattern exterior; introducing a previously formed shape, insert or body into the mold; introducing consolidatable powder material into the mold; compacting the mold to thereby compress the powder and previously formed shape into a preform which is to be consolidated; separating the preform from the mold; providing a bed of pressure transmission particles, and positioning the preform in the bed; and compacting the preform in the bed of particles by transmission of pressure to the preform via the bed, to thereby consolidate the preform into a dense, desired shape part.
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Meeks Henry S.
Swinney Stephen P.
Ceracon, Inc.
Haefliger William W.
Lechert Jr. Stephen J.
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