Patent

Compositions And Methods For Foundry Cores In High Pressure Die Casting.

PATENT

Compositions And Methods For Foundry Cores In High Pressure Die Casting.

This invention relates to "lost" cores for use high pressure die casting, the cores preferably comprising a water-soluble synthetic ceramic aggregate having an appropriate strength and tolerance for various casting pressures and temperatures, an inorganic binder comprising sodium silicate, an additive comprising particulate amorphous silicon dioxide, and a refractory coating, wherein the cores have the capacity to be removed from a casting by dissolution with water.

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