发明公开
- 专利标题： Method for reconditioning a hot gas path part of a gas turbine
- 专利标题（中）： 维尔法赫恩·乌克兰
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申请号： EP13160050.4申请日： 2013-03-19
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公开(公告)号： EP2781691A1公开(公告)日： 2014-09-24
- 发明人: Stankowski, Alexander , Zimmermann, Julien Rene Andre , Hoevel, Simone , Grasso, Piero-Daniele , Olliges, Sven , Duval, Sophie Betty Claire
- 申请人： Alstom Technology Ltd
- 申请人地址： Brown Boveri Strasse 7 5400 Baden CH
- 专利权人： Alstom Technology Ltd
- 当前专利权人： Alstom Technology Ltd
- 当前专利权人地址： Brown Boveri Strasse 7 5400 Baden CH
- 主分类号： F01D5/00
- IPC分类号： F01D5/00 ; B23P6/00
摘要：
A method for reconditioning a hot gas path part (10) of a gas turbine in order to flexibly adapt an operation regime of said gas turbine for subsequent operation intervals is disclosed.
It comprises the steps of:
a) providing a hot gas path part (10) to be reconditioned;
b) remove a predetermined area of said hot gas path part (10), resulting in a cutout (19) at said hot gas path part (10);
c) manufacture a coupon (20) for being inserted into said cutout (19) to replace said removed area of said hot gas path part (10);
d) inserting said coupon (20) into said cutout (19); and
e) joining said hot gas path part (10) with said inserted coupon (20);
f) whereby said coupon (20) is manufactured by a selective laser melting (SLM) method resulting in a fine grain sized material with significantly improved low cycle fatigue (LCF) lifetime; and
g) whereby said hot gas path part (10) is coated, at least in an area comprising said inserted coupon (20), with a metallic overlay (21) with improved thermo-mechanical fatigue (TMF) and oxidation lifetime.
It comprises the steps of:
a) providing a hot gas path part (10) to be reconditioned;
b) remove a predetermined area of said hot gas path part (10), resulting in a cutout (19) at said hot gas path part (10);
c) manufacture a coupon (20) for being inserted into said cutout (19) to replace said removed area of said hot gas path part (10);
d) inserting said coupon (20) into said cutout (19); and
e) joining said hot gas path part (10) with said inserted coupon (20);
f) whereby said coupon (20) is manufactured by a selective laser melting (SLM) method resulting in a fine grain sized material with significantly improved low cycle fatigue (LCF) lifetime; and
g) whereby said hot gas path part (10) is coated, at least in an area comprising said inserted coupon (20), with a metallic overlay (21) with improved thermo-mechanical fatigue (TMF) and oxidation lifetime.
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