CERAMIC AND REFRACTORY METAL CORE ASSEMBLY

摘要

A core assembly for forming a cast component includes a refractory metal core and a ceramic core element. The refractory metal core includes first and second ends and sides extending from the first end to the second end. The ceramic core element includes a slot positioned between first and second lands, each land having an inner surface facing the slot and an adjacent outer surface. The first end of the refractory metal core is secured within the slot with an adhesive, and the refractory metal core extends from the ceramic core element in both a longitudinal and a transverse direction. The slot, lands, and refractory metal core form a core assembly providing access paths to the sides of the refractory metal core. Surplus adhesive is removed from the refractory metal core via the access paths. Investment casting provides the component with an internal passage and an internal cooling circuit.

主权项

1. A method for casting a component, the method comprising:
forming a refractory metal core having first and second ends and first and second sides, each side extending from the first end to the second end; forming a ceramic core element, the ceramic core element comprising:
an upstream end;a downstream end;a first side extending from the upstream end to the downstream end;a second side extending from the upstream end to the downstream end and generally opposite the first; anda slot positioned between a first land and a second land for receiving the first end of the refractory metal core, each land having an inner surface facing the slot and an outer surface adjacent the inner surface; securing the first end of the refractory metal core into the slot of the ceramic core with an adhesive, wherein the slot and the first and second lands of the ceramic core element and the first end and first and second sides of the refractory metal core form a core assembly that provides access paths to the first and second sides of the refractory metal core near the first end, and wherein the refractory metal core extends from the ceramic core element in both a longitudinal and a transverse direction; and investment casting the component using the core assembly to provide the component with an internal core passage and an internal cooling circuit.