PROCESS OF PREPARATION OF WATER GLASS BINDER FOR MANUFACTURE OF CASTING CERAMIC MOULDS BY CAST MODELS Russian patent published in 1998 - IPC

Abstract RU 2118223 C1

FIELD: foundry. SUBSTANCE: 4-6% aqueous solution of phosphoric acid is prepared and injected into water glass in the form of aerosol with rate of (0,3-1,6)•10^-5 cu.m/s under constant agitation. Neutralization of water glass is conducted simultaneously with its elecrodialysis under action of 0.1-1.0 A direct current. In process of electrodialysis water glass is subjected to action of nanosecond electromagnetic pulses in the course of 60-120 min. EFFECT: increased strength and precision of ceramic moulds especially at high temperatures. 2 cl, 3 tbl

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RU 2 118 223 C1

Authors

Znamenskij L.G.

Kulakov B.A.

Krymskij V.V.

Dates

1998-08-27—Published

1997-04-22—Filed