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  4. Reconditioning of Nickel base HPT blades and vanes used in aero engines and power plant gas turbines by combination of direct laser forming, laser metal deposition and laser drilling
 
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Reconditioning of Nickel base HPT blades and vanes used in aero engines and power plant gas turbines by combination of direct laser forming, laser metal deposition and laser drilling

Publikationstyp
Conference Paper
Date Issued
2006-04
Sprache
English
Author(s)
Kelbassa, Ingomar  
Kreutz, Ernst Wolfgang  
Over, Christoph  
Trippe, Lena  
Wissenbach, Konrad  
TORE-URI
http://hdl.handle.net/11420/12520
Start Page
201
End Page
207
Citation
PICALO 2006 - 2nd Pacific International Conference on Applications of Laser and Optics - Conference Proceedings: 201-207 (2006)
Contribution to Conference
2nd Pacific International Conference on Applications of Laser and Optic, PICALO 2006  
Publisher DOI
10.2351/1.5056928
Scopus ID
2-s2.0-56349118056
Publisher
LIA
Parts like HPT (High Pressure Turbine) blades and vanes with integrated complex shaped cooling channels cannot be repaired. The parts are replaced by new ones. The aim is to develop and implement a reconditioning chain to avoid scrapping of the part. The reconditioning chain covers the three different Laser Applications 1. Direct Laser Forming (DLF), 2. Laser Metal Deposition (LMD) and 3. Laser Drilling (LD) which are arranged in subsequent Processing Steps. The damaged volume of the blade or vane is replaced by a fitting patch with integrated cooling channels which is generatively manufactured by DLF based on CAD data acquired by digitizing and reverse engineering in a first step. The generated patch is joined into the remaining part of the blade or vane by LMD. The non open cooling channels are opened and in case of necessity reshaped by LD in the third step. Also the cooling channels damaged or destroyed in the joint zone patch-substrate by the LMD joining process within step 2 are reworked or inserted by LD in the third step. First results achieved within basic R & D of DLF, LMD and LD of relevant Nickel Base Alloys are presented.
DDC Class
530: Physik
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