Manufacturing methods for multi-lobed cooling holes

A method for producing a diffusion cooling hole extending between a wall having a first wall surface and a second wall surface includes forming a cooling hole inlet at the first wall surface, forming a cooling hole outlet at the second wall surface, forming a metering section downstream from the inl...

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Bibliographische Detailangaben
Hauptverfasser:	Quitter, John, Faughnan, Jr., Paul R, Reed, Gordon Miller
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING BORING CLADDING OR PLATING BY SOLDERING OR WELDING COMBINED OPERATIONS COMBUSTION APPARATUS COMBUSTION PROCESSES CUTTING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING CUTTING-OUT ENGINE PLANTS IN GENERAL GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HAND CUTTING TOOLS HEATING LIGHTING MACHINE TOOLS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING METAL-WORKING NOT OTHERWISE PROVIDED FOR MILLING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES OTHER WORKING OF METAL PERFORATING PERFORMING OPERATIONS PUNCHING SEVERING SEVERING BY MEANS OTHER THAN CUTTING SOLDERING OR UNSOLDERING STAMPING-OUT STEAM ENGINES TRANSPORTING TURNING UNIVERSAL MACHINE TOOLS WEAPONS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A method for producing a diffusion cooling hole extending between a wall having a first wall surface and a second wall surface includes forming a cooling hole inlet at the first wall surface, forming a cooling hole outlet at the second wall surface, forming a metering section downstream from the inlet and forming a multi-lobed diffusing section between the metering section and the outlet. The inlet, outlet, metering section and multi-lobed diffusing section are formed by laser drilling, particle beam machining, fluid jet guided laser machining, mechanical machining, masking and combinations thereof.