Method of manufacturing a turbomachine component that includes cooling air discharge orifices
AssigneeSnecma
InventorsThierry Henri Raymond Alaux, Patrick Emilien Paul Emile Huchin, Patrice Jean-Marc Rosset, Boris Soulalioux
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Abstract
A method of producing cooling fluid discharge orifices in the wall of a part manufactured by the technique of lost wax casting in which a pattern of the part is produced in a wax mold, the orifices each having a first portion emerging at the external surface of the wall is disclosed. The method includes making cavities in the wax pattern that correspond to the first portions of said orifices of the part. Thus, it is possible to produce cooling air discharge orifices without sharp edges.
Claims11
A method of producing cooling fluid discharge orifices in a wall of a part manufactured by lost wax casting in which a pattern of the part is produced in a wax mold, the orifices each having a first portion emerging at an external surface of the wall, wherein the part is a turbomachine component, which method comprising:
- making cavities in the wax pattern that correspond to the first portions of said orifices on the external surface of the wall of the part;
- casting the part by lost wax casting thereby forming the first portions of the orifices on the external wall of the part such that the first portions of the orifices are not in communication with an internal surface of the wall;
- and
- machining, in the part as cast, a second orifice portion that brings a bottom of the first orifice portion into communication with the internal surface of the wall.
Dependencies are inferred from the claim text.