Ansaldo Energia IP UK Limited

General Electric Technology Gmbh

Simone Hoevel

Alexander Stankowski

Ken Yves Haffner

Thomas Etter

Piero-Daniele Grasso

Hartmut Haehnle

Jaroslaw Leszek Szwedowicz

Sophie Betty Claire Duval

Julien Rene Andre Zimmermann

Sven Olliges

Roman Engeli

Alexey Drozdov

Thomas Opderbecke

Joergen Ferber

George Kirilov Drensky

Dmitry Yakushkov

Lukas Emanuel Rickenbacher

A method for reconditioning a hot gas path part of a gas turbine to flexibly adapt an operation regime of said gas turbine for subsequent operation intervals. The method includes providing a hot gas path part to be reconditioned; removing a predetermined area of the hot gas path part, resulting in a cutout at the hot gas path part; and manufacturing a coupon for insertion into the cutout to replace the removed area of the hot gas path part. The method further includes inserting the coupon into the cutout; and joining the hot gas path part with the coupon. The coupon is manufactured by a selective laser melting method resulting in a fine grain sized material with significantly improved low cycle fatigue lifetime. The hot gas path part is coated, at least in an area including the inserted coupon, with a metallic overlay with improved thermo-mechanical fatigue and oxidation lifetime.

Method for reconditioning a hot gas path part of a gas turbine

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Lengnau, Switzerland

Simone Hoevel