2016-3(20)

Design, manufacturing and commissioning of nuclear industry equipment

Article NameCombined Laser Additive Manufacturing for Complex Turbine Blades
AuthorsBenjamin Graf *,1; Sergej Gook1; Andrey Gumenyuk1,2; Michael Rethmeier (1), (2), (3)
Address

(1) Fraunhofer Institute for Production Systems and Design Technology IPK, Pascalstraße 8-9, 10587 Berlin, Germany
(2) BAM - Bundesanstalt für Materialforschung und –prüfung, Unter den Eichen 87, 12205 Berlin, Germany
(3) Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany
e-mail: Benjamin.graf@ipk.fraunhofer.de

AbstractLaser beam processes are increasingly used in the field of additive manufacturing. Prominent methods are either powderbed-based like Laser Metal Fusion (LMF), or utilizing a powder nozzle like Laser Metal Deposition (LMD). While LMF allows the manufacturing of complex structures, build rate, part volumes and material flexibility are limited. In contrast, LMD is able to operate with high deposition rates on existing parts, and materials can be changed easily during the process. However LMD shape complexity is limited. Utilizing their respective strengths, a combination of these two additive technologies has the potential to produce complex parts with high deposition rates and increased material flexibility. In this paper, combined manufacturing with additive technologies LMF and LMD is described. Its benefit for industry with emphasis on turbomachinery is shown. As reality test for the innovation, an industrial turbine blade is manufactured.
Keywordsadditive manufacturing; laser metal fusion; laser metal deposition; turbine blade
LanguageEnglish
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