公开(公告)号：US20160069185A1

公开(公告)日：2016-03-10

申请号：US14851459

申请日：2015-09-11

Applicant: ALSTOM Technology Ltd

Inventor： Alexander STANKOWSKI ,  Julien Rene Andre Zimmermann ,  Simone Hoevel ,  Piero-Daniele Grasso ,  Sven Olliges ,  Sophie Betty Claire Duval

IPC: F01D5/00 ,  C23C4/08 ,  B23K26/00 ,  B23P6/00 ,  B23K26/342

CPC classification number: F01D5/005 ,  B23K26/0006 ,  B23K26/342 ,  B23K2103/02 ,  B23K2103/18 ,  B23K2103/26 ,  B23P6/005 ,  B33Y10/00 ,  C23C4/073 ,  F01D5/288 ,  F05D2230/10 ,  F05D2230/30 ,  F05D2230/312 ,  F05D2230/313 ,  F05D2230/80

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

Abstract translation: 公开了一种用于修复燃气轮机的热气体路径部分以便灵活地适应所述燃气轮机的操作状态以用于随后的操作间隔的方法。 该方法包括提供待修复的热气路径部分; 去除所述热气体路径部分的预定区域，导致在所述热气路径部分处的切口; 并制造用于插入所述切口中以更换所述热气路径部分的去除区域的试样。 该方法还包括将所述优惠券插入所述切口中; 并且将所述热气体路径部分与所述插入的试样接合。 该优惠券是通过选择性激光熔融（SLM）方法制造的，从而产生具有显着改善的低循环疲劳（LCF）寿命的细粒度材料。 热气路径部分至少在包括所述插入的试样的区域中涂覆有具有改善的热机械疲劳（TMF）和氧化寿命的金属覆层。