Ceramic shell moulds, manufacture and use

Details Ceramic shell moulds, manufacture and use Ceramic shell moulds, manufacture and use

1984-01-16

1987-04-28

Godici, Nicholas P.

Metal founding

Process

Shaping a forming surface

B22C 102

Patent

active

046606238

ABSTRACT:
A thin shell ceramic mould for use in metal casting is formed by applying a thin coating of a suitable material and binder to an expandable pattern, e.g. expanded polystyrene, having a density of about 30 to 50 kg/cu.m. The coated pattern is subjected to heat at a temperature of about 1000.degree. C. for 10 minutes to burn out the pattern and cure the coating. The ceramic shell is made just thick enough to be handled.

REFERENCES:
patent: 2815552 (1957-12-01), Turnbull
patent: 2820265 (1958-01-01), Kohl et al.
patent: 2877523 (1959-03-01), Turnbull
patent: 3018528 (1962-01-01), Horton
patent: 3153826 (1964-10-01), Horton
patent: 3259949 (1966-07-01), Moore
patent: 3489202 (1970-01-01), Taylor
patent: 4222429 (1980-09-01), Kemp
patent: 4240492 (1980-12-01), Edwards
patent: 4291739 (1981-09-01), Baur
Corning Glascoat Molds, written by Refractories Sales Dept., Corning Glass Works, Corning, N.Y.

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