| abstract |
Disclosed are casting molds, cores and mixtures, molding material mixtures, mold base material mixtures and casting molds or cores for the combination of a mold base material reclaimed therefrom and a solution or dispersion containing water glass for the production of casting molds and/or cores. . In addition, in order to facilitate disassembly of the casting mold or core during production of the casting mold or core and/or to increase the reproducibility, the components of the molding material mixture include water glass and particulate amorphous silicon dioxide cured by a chemical reaction with each other. Disclosed is the corresponding use of a corresponding mixture or one amount of a particulate sheet silicate having a d90 of less than 45 μm as an additive for the production of molding material mixtures. |