Verfahren zur Wiederherstellung von Legierungsverarmung in einer Schaufel um Kühlbohrungen

Details

Veröffentlichungs-Nr.

EP4786731

Anmeldetag

16. Januar 2026

Veröffentlichung

5. August 2026

Rechtsraum

EP

Abstract

A method of reducing depletion of elements from an airfoil (140) includes disposing a bond coating on the airfoil (140), where the airfoil (140) comprises cooling channels (150). The airfoil (140) includes a material that has an initial composition. A cooling hole (150a) is machined in the airfoil (140) to contact the cooling channels (150) such that a fluid travelling in the cooling channel (150) may be discharged via the cooling hole (150a). The machining of the cooling hole (150a) results in a formation of a depleted region around the cooling hole (150a). The depleted region is depleted of a portion of the initial composition of the airfoil (150). A top coat is disposed on the bond coat. The airfoil (150) is subjected to a heat treatment at a temperature effective to promote diffusion of elements from a non-depleted region to the depleted region around the cooling hole.

Anmelder

Firma

RTX Corporation

Land

🇺🇸 USA