Ceramic core for investment casting and method for preparation o

Details Ceramic core for investment casting and method for preparation o Ceramic core for investment casting and method for preparation o

1994-01-18

1995-02-07

Group, Karl

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 389, B28B 734

Patent

active

053872800

ABSTRACT:
There is disclosed a core mix and a method of fabricating the core for use in investment casting. The core composition comprises an acid soluble borate binder in a high percentage by weight of the composition. A refractory selected from period three nitride compounds is employed with the binder to impart strength to the core. The use of the combination of binder and refractory as disclosed herein provides a high strength core which is readily soluble by mild environmentally friendly acids.

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patent: 4530722 (1985-07-01), Moore et al.
patent: 4690201 (1987-09-01), Van Rens
patent: 4769076 (1988-09-01), Watanabe et al.
patent: 4837187 (1989-06-01), Frank et al.
patent: 4921038 (1990-05-01), Sasaki et al.
patent: 4922991 (1990-05-01), Pitcher et al.

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