Browsing by Subject "Hybrid Manufacturing"

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    Investigation of Wear Behavior of Centrifugal Disc Finishing on Additively Manufactured Ti6Al4V Samples
    (2022) Fan, Foxian; Jalui, Sagar; Lajoie, Nicholas; Manogharan, Guha
    As-built Additively Manufactured (AM) metallic parts require secondary processing in most applications to improve surface finish and mechanical strength. Mass Finishing (MF) processes are gaining popularity as effective and economical surface improvement methods for metal AM parts. This study investigates the wear behavior of post-processing both Laser Powder Bed Fusion (LPBF) and Electron Beam Melting (EBM) fabricated Ti6Al4V parts via Centrifugal Disc Finishing (CDF). Both AM orientation-based surface finish and wear behavior are compared for better understanding on key mechanisms of AM+MF hybrid manufacturing system. The areal surface roughness results showed that wear rate on side surfaces were higher than top surfaces for both LPBF and EBM samples in CDF. In addition, LPBF samples exhibited higher material removal than EBM samples based on weight loss measurements.
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    A Review of Hybrid Manufacturing
    (University of Texas at Austin, 2015) Lorenz, K.A.; Jones, J.B.; Wimpenny, D.I.; Jackson, M.R.
    In recent years the combination of laser-based Additive Manufacturing and Computer Numerical Controlled (CNC) machining has become increasingly popular, with several machine tool manufacturers exhibiting products based on different machine tool configurations. This technology, widely known as Hybrid Manufacturing, generally exploits Directed Energy Deposition processes using powder feedstock that is fed into a melt pool created by a laser. Although Directed Energy Deposition processes predate powder bed fusion Additive Manufacturing (at least in terms of coating and repair applications), commercialization of Hybrid Manufacturing systems is still very much in its infancy. However, they do offer clear advantages, combining a high deposition rate together with the accuracy and surface finish associated with machining. This paper presents the history of the development of Hybrid Manufacturing Systems (HMS), dating back from work undertaken in the mid 1990s through to the present day. The relative merits of different material deposition approaches are compared and some of the key technical challenges which remain are highlighted and discussed.