A method for the production of a muffle for finely - or model casting, a method for the production of a metallic, ceramic or glass ceramic casting - or blank and a kit for the production of an object of the kind

摘要

Corresponding methods, moreover, are described for the production of a muffle for the finely - or model casting, a method for the production of a metallic, ceramic or glass ceramic casting - or blank and kits for the production of such an object with the following steps:- Providing a pattern,- Producing an embedding medium, comprising a mixture of:a) a dispersing agent,b) a ceramic powder with(i) of a fraction having a diameter of less than 500 nm (nano - ceramic powder fraction) with a proportion of 2 - 74, vol. -%, based on the volume of the total mixture,and(ii) a fraction having a diameter of over 500 nm (micro - ceramic powder fraction) with a proportion of 2 - 74 vol. -%, based on the volume of the total mixture,c), if appropriate, a metal powder, consisting of metals and / or alloys and / or intermetallic compounds,d) optionally an inorganic or organic binder,- A - or about beds of the pattern with the embedding compound,- Solidification of the pattern a - or over bed end investment,- during and / or after the solidification of the drying of the pattern a - or over bed end embedding compound, by removal of the dispersing agent and, if appropriate, other volatile constituents,- Removal of the pattern of the dried investment and heating of the dried investment material, so that a muffle for ..