Sand mold member and method

Metal founding – Process – Shaping a forming surface

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Details

164349, 106 384, B22C 120

Patent

active

RE0360015

ABSTRACT:
A foundry mold member made from a plurality of sand practice bound together with a binder which is concentrated at the contact points between contiguous particles and consists essentially of gelatins having a Bloom rating less than about 175 Bloom grams. The sand particles are first coated with a sol of the gelatin, cooled to ambient temperature and conditioned to prescribed water content necessary to effect migration of the gelatin to the interparticle contact points upon heating of the coated particles in a pattern mold.

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