Plastic and nonmetallic article shaping or treating: processes – Including step of generating heat by friction
Patent
1989-12-28
1990-08-28
Lechart, Jr., Stephen J.
Plastic and nonmetallic article shaping or treating: processes
Including step of generating heat by friction
264125, 264332, 419 13, 419 17, 419 19, 419 20, 419 49, F27B 904
Patent
active
049523538
ABSTRACT:
A process for densifying porous articles comprises providing a non-reactive container with a green article and sufficient solid encapsulating agent selected from the group consisting of tin and the tin-magnesium eutectic to encapsulate the green article when the agent is in the molten state. The temperature is raised sufficiently to melt the agent and to encapsulate the article. The encapsulated article is maintained at a pressure below the infiltrating pressure of the green article while heating the encapsulated article sufficiently to create a surface on the article that is essentially free of porosity and thereafter, the pressure on the encapsulated article is increased while maintaining the article at its sintering temperature for a sufficient time to increase the density of said article to at least about 98% of theoretical.
REFERENCES:
patent: 4023966 (1977-05-01), Loersch et al.
patent: 4681702 (1987-07-01), Schreiner et al.
patent: 4756752 (1988-07-01), Barnard
Craig Frances P.
GTE Laboratories Incorporated
Lechart, Jr. Stephen J.
LandOfFree
Hot isostatic pressing does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hot isostatic pressing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hot isostatic pressing will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1588517