Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Patent
1992-12-21
1994-08-23
Kastler, Scott
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
266251, 148636, B22F 300
Patent
active
053404190
ABSTRACT:
Method and apparatus for densifying an article wherein the article is disposed in a first molten salt pressure transmission medium in a container. The first medium is heated to a first elevated densifying temperature. The container is disposed in a second molten salt pressure transmission medium at a second temperature lower than the first temperature. The first medium and the second medium are communicated so that pressure applied to the second medium is transmitted to the first medium. Pressure is applied to the lower temperature second medium sufficient to densify the article disposed in the first higher temperature medium. Following densification of the article, the container is removed from the second medium. The method and apparatus are especially useful for closing internal porosity of metallic and intermetallic castings.
REFERENCES:
patent: Re28301 (1975-01-01), Havel
patent: 3577635 (1971-05-01), Bergman et al.
The Ceracon Process literature, 4 pages, Dec. 1991.
Kastler Scott
Metal Casting Technology Inc.
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