mistura de material de moldagem , métodos para produzir moldes de fusão ou núcleos , e para fundir alumínio, molde ou núcleo, e , uso de sulfato de bário
The invention relates to molding material mixtures containing barium sulfate in combination with refractory basic molding materials and a waterglass-based binder system for producing casting molds and cores for the foundry industry in order to obtain cast pieces, in particular aluminum ones, which h...
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| Format: | Patent |
| Sprache: | por |
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| Zusammenfassung: | The invention relates to molding material mixtures containing barium sulfate in combination with refractory basic molding materials and a waterglass-based binder system for producing casting molds and cores for the foundry industry in order to obtain cast pieces, in particular aluminum ones, which have an improved cast surface. |
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