Method for casting powder

Details Method for casting powder Method for casting powder

1989-08-14

1991-02-26

Hunt, Brooks H.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Consolidation of powder prior to sintering

264 86, 264233, 264344, B22F 100

Patent

active

049960245

ABSTRACT:
A method for casting a metal or ceramic powder which comprises casting a slurry of the metal or ceramic powder suspended in a dispersion medium containing at least 10 wt. % of a liquid extractable with a supercritical fluid or a liquefied gas into a porous mold, keeping the slurry placed in the porous mold at a temperature not lower than the melting point of the dispersion medium, and extracting at least 10 wt. % of the dispersion medium with the supercritical fluid or liquefied gas to impart a formability to the extracted body.
In the method of the invention, since the volume change of the dispersion medium due to phase change does not occur, the internal strain and deformation of the molded body occur little. As a result, the sintered body obtained has a highly dimensional accuracy.

REFERENCES:
patent: 2979401 (1961-04-01), Szymaszek
patent: 4341725 (1982-07-01), Weaver et al.
patent: 4737332 (1988-04-01), Miyashita et al.
patent: 4820462 (1989-04-01), Nakajima et al.

Affiliated with

Also associated with

Rating

Method for casting powder does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for casting powder, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for casting powder will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-293018