Method and apparatus for densifying an article

Details Method and apparatus for densifying an article Method and apparatus for densifying an article

B - Operations, Transporting

23

P

B23P 25/00 (2006.01) B01J 3/06 (2006.01) B22F 3/15 (2006.01) B30B 11/00 (2006.01) C04B 41/00 (2006.01)

Patent

CA 2100833

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.

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