INTEGRATED CASTING CORE-SHELL STRUCTURE FOR MAKING CAST COMPONENT WITH NON-LINEAR HOLES

The present disclosure generally relates to integrated core-shell investment casting molds that provide filament structures corresponding to cooling hole patterns in the surface of the turbine blade or stator vane, which provide a leaching pathway for the core portion after metal casting. The invent...

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Bibliographische Detailangaben
Hauptverfasser:	GARAY, GREGORY TERRENCE, YANG, XI
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BLASTING CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES ENGINE PLANTS IN GENERAL FOUNDRY MOULDING HEATING LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES PERFORMING OPERATIONS POWDER METALLURGY SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS STEAM ENGINES TRANSPORTING WEAPONS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The present disclosure generally relates to integrated core-shell investment casting molds that provide filament structures corresponding to cooling hole patterns in the surface of the turbine blade or stator vane, which provide a leaching pathway for the core portion after metal casting. The invention relates to a ceramic casting mold comprising a core and a shell portion formed of a photopolymerizable material with at least one cavity therebetween, the cavity defining a shape of a cast component, and a plurality of filaments founed of the photopolymerizable material joining the core and shell portions, with each filament spanning between the core and shell portions and defining a hole in the cast component, wherein at least one of the filaments includes at least a portion having a non-linear geometry and a cross sectional area ranging from 0.01 to 2 mm2. The invention also relates to methods for producing the same. La présente invention concerne d'une manière générale des moules de coulée à la cire perdue à noyau-coque intégrés qui comportent des structures de filaments correspondant à des motifs d'orifices de refroidissement dans la surface d'une pale de turbine ou d'une aube de stator, ce qui fournit un trajet d'écoulement pour la partie de noyau après la coulée de métal. Ces structures de filaments peuvent être linéaires ou non linéaires. L'invention concerne également des filaments de noyau qui peuvent être utilisés pour compléter le trajet d'écoulement, par exemple dans une partie de pointe de noyau du moule.