Process and refractory metal core for creating varying thickness microcircuits for turbine engine components

摘要

The present disclosure is directed to a refractory metal core for use in forming varying thickness microcircuits in turbine engine components, a process for forming the refractory metal core, and a process for forming the turbine engine components. The refractory metal core is used in the casting of a turbine engine component. The core is formed by a sheet of refractory metal material having a curved trailing edge portion integrally formed with a leading edge portion.

主权项

1. A process of forming a turbine engine component comprising the steps of:
providing only one non-ceramic core formed from a single sheet of refractory metal material; said non-ceramic core providing step comprising providing the single sheet of refractory metal material core having at least one portion for forming at least one as-cast cooling circuit within said turbine engine component; said refractory metal material core providing step comprising machining the single sheet of refractory metal material core into a first portion for forming a serpentine cooling circuit in said turbine engine component and machining a second portion for forming a trailing edge cooling circuit in said turbine engine component, machining said sheet of refractory metal material core into a third portion for forming a leading edge cooling circuit in said turbine engine component, machining said sheet of refractory metal material core into a fourth portion for forming at least one internal cooling passage for said turbine engine component, wherein said first portion is integral to said second, third, and fourth portions; providing a mold having a shape of said turbine engine component; positioning only said non-ceramic core within said mold; introducing a molten metal material into said mold and allowing said molten metal material to solidify and form said turbine engine component; and removing said non-ceramic core from said solidified turbine engine component.