Method of producing molds for the casting of metal

Details Method of producing molds for the casting of metal Method of producing molds for the casting of metal

1986-09-15

1987-12-29

Morris, Theodore

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3835, B28B 728

Patent

active

047158956

ABSTRACT:
The present invention relates to the production of molds for the casting of metal. The molds are made of refractory materials bound together by a binding agent on the basis of a partially hydrolyzed, partially condensed silicic acid ester. A slip consisting of binding agent and refractory material is applied to the model alternately with a granular refractory sanding material. In accordance with the invention, the granular refractory sanding material contains the agent for hardening the binding agent. The method of the invention makes possible the dimensionally accurate reproduction of even relatively large models, while the slip can be stored over a relatively long period of time without loss of its action.

REFERENCES:
patent: 2851752 (1958-09-01), Benham
patent: 3232771 (1966-02-01), Pearce
patent: 3428465 (1969-02-01), McLeod
patent: 3432312 (1969-03-01), Feagin
patent: 4059453 (1977-11-01), Dittrich

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