Vitreous-metallic container for hot isostatic compaction

Details Vitreous-metallic container for hot isostatic compaction Vitreous-metallic container for hot isostatic compaction

B - Operations, Transporting

22

F

25/135, 22/164,

B22F 3/14 (2006.01) B22F 3/12 (2006.01) B22F 3/15 (2006.01) B22F 7/04 (2006.01)

Patent

CA 1057485

ABSTRACT OF THE DISCLOSURE This invention involves a method of making a gas- impervious container for the hot isostatic compaction of particulate material into an article of intricate config- uration. It comprises providing a removable pattern in the appropriate precompaction configuration of the article to be produced, forming a shell of vitreous frit on the pattern, heating the shell to effect vitrification thereof, and coating the vitreous shell with a layer of metallic material to form a gas-impervious metallic shell around the vitreous shell. The pattern may be removed at any time after formation of the shell of vitreous frit. The gas-impervious container thus produced is well-suited for use in hot isostatic compaction processes wherein dense articles of complex shape, such as gas turbine engine components, are produced from superalloy powders. -1-

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