PROCEDE DE FABRICATION DE PIECE DE TURBOMACHINE COMPORTANT DES ORIFICES D'EVACUATION D'AIR DE REFROIDISSEMENT

摘要

The production of orifices (110) for the evacuation of cooling fluid in the wall (171) of a component fabricated by the lost wax foundry process with the formation of a wax model in a mould, the orifices incorporating a first portion (110E) emerging at the surface of the external wall (171ext), consists of: (A) making cavities in the wax model corresponding to the first portion of an orifice; (B) then machining in the component coming from the foundry of a second portion (110T) of an orifice, connecting the bottom of the first portion with the internal surface of the wall. An independent claim is also included for a turbine component obtained using this method.