The objective of this study is to propose and evaluate various surface finishing techniques aimed at reducing the external and internal surface roughness of AM parts. In the tool and die sectors, integration of conformal cooling channels by Additive Manufacturing (AM) is of great interest. For the investigation, samples were specifically designed with different channel geometries and diameters and printed in Maraging Steel (Grade 300) by Powder Bed Fusion (PBF). Three different techniques for surface post-treatment were investigated including: Vibro-finishing, sandblasting followed by vibro-finishing and chemically assisted vibro-finishing. Microscopy analyses and profilometry were adopted to understand the effects and phenomena regarding to each process.
Finishing of internal and external surfaces produced by Powder Bed Fusion
M. Hamidi;A. Falzetti;A. Redaelli;N. Lecis;M. Vedani
2017-01-01
Abstract
The objective of this study is to propose and evaluate various surface finishing techniques aimed at reducing the external and internal surface roughness of AM parts. In the tool and die sectors, integration of conformal cooling channels by Additive Manufacturing (AM) is of great interest. For the investigation, samples were specifically designed with different channel geometries and diameters and printed in Maraging Steel (Grade 300) by Powder Bed Fusion (PBF). Three different techniques for surface post-treatment were investigated including: Vibro-finishing, sandblasting followed by vibro-finishing and chemically assisted vibro-finishing. Microscopy analyses and profilometry were adopted to understand the effects and phenomena regarding to each process.| File | Dimensione | Formato | |
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