Preparation of foundry molds or cores

Details Preparation of foundry molds or cores Preparation of foundry molds or cores

1987-07-27

1989-07-18

Ivy, C. Warren

Metal founding

Process

Shaping a forming surface

164 16, 264 83, 523145, 528147, 5281585, 528161, C08L 610, B22C 122

Patent

active

048484431

ABSTRACT:
Foundry molds and cores are prepared by using as a binder a phenolic resin in solution in aqueous sodium hydroxide and using an ester to cure the binder. The ester may be incorporated in the mixture prior to shaping, or the ester in gaseous form may be passed through the shaped mixture.

REFERENCES:
patent: 4166799 (1979-09-01), Giacobbe
patent: 4426467 (1984-01-01), Quist
patent: 4468359 (1984-08-01), Lemon
patent: 4474904 (1984-10-01), Lemon
Chemical Abstracts, vol. 78, No. 25, Jun. 25, 1973, "Concrete Mixture with Retarded Solidification on Set".

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