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US 6,042,780 AGranted
Method for manufacturing high performance components
OwnerXiaodi Huanginventor
Life of this patent
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Abstract
A method for producing high performance components by the consolidation of powdered materials under conditions of hot isostatic pressure. The method uses the inclusion of reactive materials mixed into pressure-transmitting mold materials and into the powder to be consolidated to contribute to in-situ materials modification including purification, chemical transformation, and reinforcement. The method also uses encapsulation of the mold in a sealed container to retain the mold material in position, and to exclude air and contaminants.
Claims26
A method for manufacturing high performance components, comprising the steps of:
- mixing a particulate material with a binder to form a mold material,
- shaping said mold material into a plurality of partial molds having an external surface and an interior cavity and being of sufficient solidity to maintain a shape,
- yet being compressible under pressure,
- assembling said partial molds to form an integrated mold with an interior cavity,
- filling said interior cavity with a powdered material to be consolidated,
- placing said mold and powdered material in a container,
- initially heating said mold to an elevated temperature to remove or fix undesirable gases, or to transform said powdered material partially or entirely to another material,
- hermetically sealing said container under vacuum,
- subsequently heating said container with said mold and said powdered material to an elevated temperature,
- applying pressure to the external surface of said container sufficient to compress said container and said mold, and transfer a pressurizing force to said powdered material within said mold cavity, so as to consolidate said powdered material in said mold cavity and form an article;
- and removing material surrounding said article from said mold.
8 more elements
Dependencies are inferred from the claim text.