Method for producing rotor discs
AssigneeCrucible Inc.
InventorJohn P. Catlin
Life of this patent
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Abstract
The production of rotor discs by bonding a plurality of fully dense, preformed blades to a hub of compacted alloy powder. The blades are embedded in the uncompacted powder and by the use of hot isostatic compacting the powder is compacted to full density to form the hub and the blades are bonded thereto simultaneously.
Claims7
A method for producing an article having at least one preformed alloy projection metallurgically bonded to a base of compacted alloy powder, said method comprising confining alloy powder in a cavity of a mold of nondeformable material, said mold cavity conforming to the desired configuration of said base of said alloy article, embedding a portion of said projection in said alloy powder within said mold cavity, sealing said mold cavity and said alloy powder confined therein against the atmosphere by enclosing the same in a collapsible container, heating said alloy powder, container and mold to an elevated temperature and compacting said alloy powder while at elevated temperature by the application of fluid pressure to compact the same to substantially full density and to metallurgically bond said preformed projection to said base of compacted alloy powder.
A method for producing a composite rotor disc having a hub of compacted alloy powder and a plurality of preformed alloy blades metallurgically bonded thereto, said method comprising confining alloy powder in a cavity of a mold of nondeformable material, said mold cavity having a first portion thereof conforming to the desired configuration of said hub and a second generally annular portion in communication with and surrounding said first portion, a plurality of preformed alloy blades positioned in spaced-apart relation with said second annular portion with a portion of each said blade being embedded in said alloy powder, sealing said mold cavity and said alloy powder confined therein against the atmosphere by enclosing the same in a collapsible container, heating said alloy powder, container and mold to an elevated temperature and compacting said alloy powder while at elevated temperature by the application of fluid pressure to compact the same to substantially full density to form said hub and to metallurgically bond said blades thereto.
Dependencies are inferred from the claim text.