Method of making ceramic cores and other articles

Details Method of making ceramic cores and other articles Method of making ceramic cores and other articles

1990-09-17

1992-06-30

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

With step of cooling to a temperature of zero degrees c. or...

264 63, B29C 3502

Patent

active

051260824

ABSTRACT:
A novel method of making a ceramic core for use in casting a metal component includes freezing a ceramic slurry comprising a ceramic powder filler, a freezable liquid and a gelling agent in a mold to form a frozen core shaped body. The frozen core shaped body is removed from the mold and thawed to room temperature. A high viscosity gel is provided in the core shaped body at room temperature that is strong enough to retain the core shape until the body can be fired to form a porous, sintered ceramic core. The gel present at room temperature may be formed as the ceramic slurry is cooled in the mold cavity to form the frozen article shaped body and/or as the frozen core shaped body is thawed to room temperature.

REFERENCES:
patent: 2749586 (1956-06-01), Kohl et al.
patent: 2820268 (1958-01-01), Kohl
patent: 2869215 (1959-01-01), Smith
patent: 2893102 (1959-07-01), Maxwell et al.
patent: 2944316 (1960-07-01), Maxwell et al.
patent: 3048905 (1962-08-01), Benson et al.
patent: 3160931 (1964-12-01), Leach
patent: 3177161 (1965-04-01), Smith-Johannsen
patent: 3213497 (1965-10-01), Scott
patent: 3222435 (1965-12-01), Mellen, Jr. et al.
patent: 4113480 (1978-09-01), Rivers
patent: 4225346 (1980-09-01), Helliker et al.
patent: 4569821 (1986-02-01), Duperray et al.
patent: 4734237 (1988-03-01), Fanelli et al.

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