Foundry mixture and related methods for casting and cleaning cast metal parts

摘要

A foundry mixture for making molds used for molding cast metal parts includes foundry sand, a non-aqueous binder, and a cleaning agent that includes calcium oxide. Residual foundry mixture remaining on the cast part after removal from the mold is removed by electrolytic cleaning of the cast part.

主权项

1. A foundry mixture capable of forming a rigid mold for molding a cast metal part without adding water to the mixture, the foundry mixture consisting of:
a granular refractory material consisting of sand, a resin binder material, and a cleaning agent, the cleaning agent consisting of calcium oxide; and the resin binder material being curable without using water to form a rigid non-aqueous binder matrix rigidifying the mold, the resin binder material being of the type that does not react with the calcium oxide during curing so that the calcium oxide remains as calcium oxide after curing of the resin binder material.