MOLD MATERIAL MIXTURES ON THE BASIS OF INORGANIC BINDERS, AND METHOD FOR PRODUCING MOLDS AND CORES FOR METAL CASTING

摘要

The invention relates to mold material mixtures on the basis of inorganic binders, for producing molds and cores for metal casting. Said mixtures consist of at least one refractory mold base material, an inorganic binder and amorphous silicon dioxide as an additive. The invention also relates to a method for producing molds and cores using said mold material mixtures.

主权项

1. A mixture for producing molding forms and cores for metal processing, comprising:
a refractory mold base material; an inorganic binder; and a particulate amorphous SiO2, obtained by thermal decomposing ZrSiO4 to ZrO2 and SiO2.