Lösliche Maskenform für die Giesserei und Verfahren zur Entsorgung.

摘要

A shell mould which can be used in lost-wax foundry is obtained from slips based on a binder of the colloidal silica or ethyl silicate type and from a ceramic inorganic filler based on fused silica and zircon, giving rise to a composition expressed as a percentage of dry mass comprising 70 to 95 % of fused silica and 5 to 30 % of zircon. The method for disposal comprises dissolution in a basic bath.