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Laser polishing as a new post process for 3D-printed polymer parts

 
: Braun, Karsten; Willenborg, Edgar; Schleifenbaum, Johannes Henrich

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Volltext ()

Procedia CIRP 94 (2020), S.134-138
ISSN: 2212-8271
Conference on Photonic Technologies (LANE) <11, 2020, Online>
Englisch
Zeitschriftenaufsatz, Konferenzbeitrag, Elektronische Publikation
Fraunhofer ILT ()
laser polishing; surface finish; roughness; polymers; additive manufacturing

Abstract
A process strategy – a quasi-top-hat scanning strategy with closed-loop temperature control – for laser polishing of additively manufactured polymer parts is developed to reduce the process to its two main process parameter, polishing temperature and melt duration. A study for SLS-printed PA12 results in an achievable roughness reduction from an initial roughness of Sa = 10.2 µm to Sa = 0.61 µm. Further investigations are performed for PP, TPU, ABS and PEEK.

: http://publica.fraunhofer.de/dokumente/N-614709.html