Reparatur von Verschleissschichten und Ortsfeste Dampfturbinenkomponente

Details

Veröffentlichungs-Nr.

EP3372784

Aktenzeichen

EP18160626

Anmeldetag

8. März 2018

Veröffentlichung

11. August 2021

Erteilung

11. August 2021

Rechtsraum

EP

IPC

F01D5/00F01D11/00F01D11/02F01D11/12

Abstract

The present invention is related to a method for repairing worn-out abradable coatings of gas turbine engine sealing components, wherein in a first step only a portion of the worn-out abradable material layer (164) is removed from a substrate (54,58) of a first component (22,40), which sealingly moves relative to another component in an operative state, e.g. blade tip and blade outer air seal. After having removed only parts of the worn-out abradable layer (164) a new abradable layer (180) is deposited by thermal spraying on the used abradable material layer (164), rather than completely removing the used abradable material and starting over on bare metal. Thus, a non-uniform worn-out abradable layer (164) is coated with a new abradable layer (180) such that a uniform layer thickness is achieved. Thereby sealing properties can be restored without excessive repairing costs.

Anmelder

Firma

General Electric Company

Land

🇺🇸 USA

Fachgebiete