Method for producing a ceramic core for producing a cavity-type casting and ceramic core

摘要

According to the invention, there is provided a method of making a ceramic core - and core - for preparing the manufacture of a cavity mold casting adapted to form the ceramic core using a 3D model of digital geometry coordinates of the casting, the method comprising the following steps includes: a) Pressure-free or low-pressure casting of a ceramic core blank, with an excess of the core according to the geometry coordinates; b) CNC machining of the core according to the 3D model in a first CNC machining process.