CPC B22C 9/103 (2013.01) [B22C 7/02 (2013.01)] | 14 Claims |
1. A method for manufacturing a ceramic core blank for the manufacture of hollow turbomachine blades using the technique of lost wax casting, the blank being manufactured by additive manufacturing and comprising:
at least one first part for forming cavities of the hollow blades,
at least one second part configured to allow positioning of the ceramic core in a wax mold, the at least one second part and the at least one first part being positioned and held with respect to one another by means of a temporary junction portion interposed between the at least one first part and the at least one second part,
at least one through orifice extending through the at least one second part, the temporary junction portion and the at least one first part, a first end of the at least one through orifice opening to an outer face of the at least one second part, and a second end of the at least one through orifice opening to an outer face of the at least one first part.
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14. A ceramic core blank for the manufacture of hollow turbomachine blades using the technique of lost wax casting, comprising:
at least one first part for forming cavities of the hollow blades,
at least one second part configured to allow positioning of the ceramic core in a wax mold, the at least one second part and the at least one first part being positioned and held with respect to one another by means of a temporary junction portion interposed between the at least one first part and the at least one second part,
at least one through orifice extending through the at least one second part, the temporary junction portion and the at least one first part, a first end of the at least one through orifice opening to an outer face of the at least one second part and a second end of the at least one through orifice opening to an outer face of the at least one first part.
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