Electrolphoretic casting process

Details Electrolphoretic casting process Electrolphoretic casting process

1981-08-05

1982-11-02

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25D 114, C25D 120

Patent

active

043572227

ABSTRACT:
The invention is an electrophoretic casting process which produces highly dense green castings with residual liquid e.g. water below 7%, and which eliminates excessive liquid and electrode degradation. This is accomplished by careful selection of slip viscosity, utilization of an impervious casting mold set-up in which only a minor part of the mold is conducting, application of a varying voltage cycle, and moving one electrode relative to the other.

REFERENCES:
patent: 2765512 (1956-10-01), Nesbit
patent: 2942991 (1960-06-01), Smith
patent: 2964823 (1960-12-01), Fredriksson
patent: 3718564 (1973-02-01), Ebrey
patent: 3882010 (1975-05-01), Szabo
patent: 4092231 (1981-05-01), Chronberg
patent: 4121987 (1978-10-01), Ryan et al.
patent: 4170542 (1979-10-01), Chronberg
"`Elephant` Modernizes Whiteware Process", pp. 30-32 and 44, Ceramic Industry, May, 1980.
"Design of Cathodes for Electrophoretic Forming of Porcelain Cups" F. S. Entelis et al., Ceramic Industry, vol. 36, Jul. '80, pp. 683-685.

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