Gußfeineinbettmasse zum Herstellen von Gußformen in der Dentaltechnik

摘要

The invention relates to a investment casting compound for making casting moulds for alloy castings, especially in dental engineering, with the MgO/SiO2/P2O5 ceramic system, and to a fine-investment casting compound for making casting moulds for alloy castings, especially in dental engineering, with ceramic constituents as a thin coating for the model of the alloy casting to be cast, the coating serving as a primary layer for the further application of an ordinary investment casting compound as secondary layer for making the final casting mould. To provide investment compounds, with which casting moulds can be made which make alloy castings with low surface roughness possible, the addition of a substance is proposed which increases the liquidus temperatures of the ceramic system and reduces the high-temperature oxidation of the alloy casting. This substance can be zirconium silicate (ZrSiO4) and/or a titanium(IV) oxide (TiO2 (anatase and/or rutile)).