Methods for making various nickel based superalloys into engineering components such as rings, tubes and pipes (70) by melting of the alloys (60) in a vacuum chamber (50) or under a low partial pressure of innert gas and subsequent centrifugal casting of the melt in the graphite molds (80) rotating along its own axis under vacuum or low partial pressure of inert gas are provided. The molds have been fabricated by machining high density, high strength ultrafine grained isotropic graphite, wherein the graphite has been made by isostatic pressing or vibrational molding.

Title
Centrifugal casting of nickel base superalloys in isotropic graphite molds under vacuum
Application Number
PCT/US2002/017995
Publication Number
2002/101103
Application Date
June 7, 2002
Publication Date
December 19, 2002
Inventor
Scott Donald
Ray Ranjan
Agent
VENTURINO Anthony P
Assignee
Scott Donald
Ray Ranjan
Santoku America
IPC
C01B 31/00
B22D 21/02
B22D 13/10
B22D 13/00
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