Method for manufacturing cast ceramic cores for turbomachine blades
AssigneeSnecma
InventorsSerge Prigent, Christian Defrocourt
Life of this patent
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Abstract
A method of manufacturing a cast core with at least one recess, corresponding to a partition of a turbomachine blade, includes the steps of shaping, in a mold, a mixture containing a ceramic particles filler and an organic binder; forming a core rough casting without the recess in the mold; extracting the core rough casting from the mold; machining the recess in the core rough casting thereby forming a machined core with the recess; removing the organic binder from the machined core; and heat treating the machined core to consolidate the machined core. The step of machining the recess is performed before the step of heat treating the machined core.
Claims16
A method of manufacturing a cast core with at least one recess, corresponding to a partition of a turbomachine blade, said method comprising:
- shaping, in a mold, a mixture containing a ceramic particles filler and an organic binder;
- forming a core rough casting without said recess in said mold;
- extracting said core rough casting from the mold;
- machining said recess in said core rough casting thereby forming a machined core with said recess;
- removing the organic binder from said machined core;
- and
- heat treating said machined core to consolidate the machined core,
- wherein said step of machining said recess is performed before the step of heat treating said machined core.
Dependencies are inferred from the claim text.