Method of restoring the fluid permeability of a used, ceramic fl

Details Method of restoring the fluid permeability of a used, ceramic fl Method of restoring the fluid permeability of a used, ceramic fl

1975-08-01

1978-02-28

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

With step of cleaning, polishing, or preconditioning...

134 3, 264233, 264335, 264344, B28B 738

Patent

active

040767795

ABSTRACT:
A method of restoring the fluid permeability of the surface of the mold face of a used, ceramic, fluid-release mold body which has become fouled with accumulated silicate material from the plastic clay composition formed by the mold, comprising treating the fouled surface with a fluorine containing acid such as fluosilicic acid, or hydrofluoric acid.

REFERENCES:
patent: 2502337 (1950-03-01), Moir
patent: 2584109 (1952-02-01), Blackbarn et al.
patent: 2652360 (1953-09-01), Bond et al.
patent: 3641229 (1972-02-01), Lawrence et al.
patent: 3708014 (1973-01-01), Wally

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