Unitary pattern assembly method

Details Unitary pattern assembly method Unitary pattern assembly method

1976-01-05

1976-10-12

Shore, Ronald J.

Metal founding

Process

Shaping a forming surface

264220, 264225, B22C 702

Patent

active

039851761

ABSTRACT:
This invention involves a method of making a unitary pattern assembly which is useful in forming an investment shell mold having an integral base for the conventional and directional solidification of molten metals and alloys. It comprises providing a yoke having a pattern capturing means and two leg members, providing a mold structure having a cavity comprising a pattern section and base section, positioning the mold structure and yoke to expose the capturing means and leg members to the pattern section and base section, respectively, forming a pattern having a base integral therewith in the cavity and removing the mold structure from the pattern and integral base. A unitary pattern assembly comprising a yoke and pattern, having an integral base, fixedly captured therein is obtained. The method is especially suitable for making a pattern assembly useful in the production of gas turbine engine blades by the "lost wax" process.

REFERENCES:
patent: 2844855 (1958-07-01), Godd et al.
patent: 3029485 (1962-04-01), McCormick
patent: 3254379 (1966-06-01), Poe
patent: 3766966 (1973-10-01), Perisse
patent: 3848654 (1974-11-01), Boyle et al.

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