Process for producing sand mold

Details Process for producing sand mold Process for producing sand mold

1993-11-19

1997-02-11

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523146, 524430, 524431, 524432, 524433, 524436, 524596, 164 6, B22C 112, B22C 118

Patent

active

056021925

ABSTRACT:
A foundry mold is produced from sand by blending, with one another, sand, a binder comprising a ester cured-phenolic resin, a curing agent comprising an organic ester compound and one or more additives containing therein a metal of the groups IB to VIII, and molding and curing the mixture into a foundry mold. The mixture is useful in a self-curing molding method and a vapour curing molding method, and the resulting mold is thereby provided with an unexpected improved mechanical strength. In particular the invention is advantageously effective with used or reclaimed refractory sand.

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