Erosion Damage to Last-Stage Compressor Disk of a Heavy-duty Gas Turbine Engine

被引:0
|
作者
Neidel, Andreas [1 ]
Gaedicke, Tobias [1 ]
Wallich, Sebastian [1 ]
机构
[1] Siemens AG, Energy Sect, Werkslab, Gasturbinenwerk Berlin, D-10548 Berlin, Germany
来源
关键词
Compendex;
D O I
10.3139/147.110337
中图分类号
TF [冶金工业];
学科分类号
0806 ;
摘要
In the course of a service life extension after 100 000 operating hours, the rotor of a heavy-duty gas turbine was inspected. During the visual inspection, some compressor wheel disks, particularly in the last stage, showed conspicuous features and flawed material. The only causal damage mechanism worth considering is erosion: only very little deformation was found in the metallographic sections' microstructure immediately underneath the flawed material areas (wear or deformation induced damages would have lead to more deformation) and, what is more, the microstructure showed no evidence of corrosion. In accordance with VDI guideline 3822, the exact designation of the damage mechanism is "Flow wear in the form of sliding jet wear in the two-phase mixture gaseous/solid".
引用
收藏
页码:607 / 614
页数:8
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