Method of casting an article

Metal founding – Process – Shaping a forming surface

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Details

164 30, 164 31, 164 34, 164 35, 164 45, B22C 702, B22C 904

Patent

active

058530444

ABSTRACT:
A wax article pattern having a cavity corresponding to a cavity in a metal article is provided. The cavity in the wax article pattern is filled with a slurry of ceramic core material. The slurry of ceramic core material is solidified to form a core. The wax article pattern is enclosed by ceramic mold material. The ceramic mold material is solidified to form a mold. The wax pattern is removed from the mold to leave an article mold cavity. The article mold cavity is filled with molten metal which is solidified to form the metal article. A passage in the metal article may be formed by a pin which extends from the wax article pattern into the cavity in the wax article pattern and is enclosed by the slurry of ceramic core material.

REFERENCES:
patent: 3596703 (1971-08-01), Bishop et al.
patent: 4289191 (1981-09-01), Myllymaki
patent: 4384607 (1983-05-01), Wood et al.
patent: 4421153 (1983-12-01), Wilkinson et al.
patent: 4434835 (1984-03-01), Willgoose
patent: 5295530 (1994-03-01), O'Connor et al.
patent: 5296308 (1994-03-01), Caccavale et al.

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