Method for manufacturing cast ceramic cores for turbomachine blades

Abstract

The invention relates to a method of manufacturing a cast ceramic core comprising at least one recess, particularly for partitions, for a turbomachine blade in particular, comprising the shaping in a mould of a mixture containing a ceramic particles filler and an organic binder, extraction of the core from the mould, removal of the binder and a heat treatment to consolidate the core. The method is characterized in that a core rough casting without the said recess is formed in the said mould and in that the said recess is machined once the rough casting has been extracted from the mould and before the heat treatment operation. In particular, the machining operation is performed mechanically by milling with the removal of chips. The invention also relates to a tool suited to implementing the method.

Dependencies are inferred from the claim text.