Method for producing a mandrel for use in hot isostatic pressed

Details Method for producing a mandrel for use in hot isostatic pressed Method for producing a mandrel for use in hot isostatic pressed

1998-04-06

1999-08-17

Derrington, James

Plastic and nonmetallic article shaping or treating: processes

Stereolithographic shaping from liquid precursor

264109, 264226, 264227, 264219, 205 70, C25D 110, B29C 3338

Patent

active

059390115

ABSTRACT:
A method for producing a composite mandrel (20) for use in creating a precise set of surface features inside a hot isostatic pressed (HIP) billet for producing a desired tool uses a composite nickel shell (16) and ceramic interior (18). A free form fabrication (FFF) or wax positive pattern (10) of the desired tool is made first, then a layer of nickel is deposited on the surface of the FFF positive pattern to produce a nickel shell (16) which is a negative of the desired tool. The final step in creating the composite mandrel (20) is filling the nickel shell (16) with ceramic material (18) to increase the rigidity of the nickel shell thereby forming a mandrel for use in an HIP process to make the desired tool.

REFERENCES:
patent: 4063705 (1977-12-01), Vodra
patent: 4620903 (1986-11-01), Chamberlin
patent: 5013409 (1991-05-01), Czor
patent: 5262121 (1993-11-01), Goodno
patent: 5447800 (1995-09-01), Dorsch et al.
patent: 5453173 (1995-09-01), Oyama
patent: 5482531 (1996-01-01), Pinnow et al.
patent: 5538683 (1996-07-01), Pinnow et al.
patent: 5640667 (1997-06-01), Freitag et al.
patent: 5728284 (1998-03-01), Oyama

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