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Technological and economical assessment of alternative process chains for blisk manufacture

: Klocke, Fritz; Schmitt, Robert; Zeis, Markus; Heidemanns, Lukas; Kerkhoff, Johannes; Heinen, Daniel; Klink, Andreas

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Procedia CIRP 35 (2015), pp.67-72
ISSN: 2212-8271
Machining Innovations Conference for Aerospace Industry (MIC) <15, 2015, Hannover>
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IPT ()

Due to the increase of blisk (blade integrated disk) demands instead of the conventional fir-tree design in current aero-engine concepts there is a high resource-driven need for a comprehensive evaluation of different process chain alternatives for blisk manufacture. Therefore, in this paper different manufacturing chains consisting of roughing, pre-finishing and finishing/polishing are compared to each other by the example of a HPC-blisk out of Inconel 718. Beside conventional milling and electrochemical machining also alternative manufacturing technologies like wire-based laser cladding, water jet cutting and automated polishing are taken into account. Based on a technological analysis an adaptable methodology is introduced, which allows an independent economical assessment of different process chains regarding e.g. company-specific boundary conditions or different production quantities.