Method of making a unitary pattern assembly

Details Method of making a unitary pattern assembly Method of making a unitary pattern assembly

1976-01-05

1977-12-13

Shore, Ronald J.

Metal founding

Process

Shaping a forming surface

164 45, 164235, B22C 700

Patent

active

040623963

ABSTRACT:
This invention involves a method of making a unitary pattern assembly which is useful in forming investment shell molds for the conventional and directional solidification of molten metals and alloys. It comprises providing a fixture having first and second pattern capturing means, providing a mold structure having a cavity, positioning the mold structure and fixture to expose the capturing means to the cavity, forming a pattern in the cavity and removing the mold structure from the pattern. A unitary pattern assembly comprising a fixture and pattern fixedly captured therein is obtained. Multiple patterns may also be captured in the fixture. 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: 3562900 (1971-02-01), Buehler
patent: 3766966 (1973-10-01), Perisse
patent: 3848654 (1974-11-01), Boyle et al.
patent: 3985176 (1976-10-01), Wamester

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