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Selective deposition of polymer powder by vibrating nozzles for laser beam melting

  • In this report, the delivery of polyamide 12 (PA 12) powder and powder layer preparation by vibrating steel nozzles is investigated and discussed with respect to its application for laser beam melting. Therefore, a setup was realized which includes a steel nozzle attached to a piezo actor as well as a positioning system. In order t o investigate the mass flow characteristics in dependency on the applied vibration state, a weighing cell is used enabling time-resolved mass flow measurements. Moreover, single-layer patterns consisting of colored and uncolored polyamide 12 were created and characterized regarding surface homogeneity and selectivity before as well as after the melting of the powder layers by a hot plate.

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Metadaten
Author:Thomas Stichel, Tobias LaumerORCiDGND, Philipp AmendGND, Peter Wittmann
URL / DOI:https://www.wlt.de/lim/Proceedings/Stick/PDF/Contribution241_final.pdf
Parent Title (German):Proceedings of Laser in Manfacturing Conference 2015, June 22, 2015 - June 25, 2015, Munich, Germany
Document Type:conference proceeding (article)
Language:English
Year of first Publication:2015
Contributing Corporation:German Scientific Laser Society (WLT e.V.)
Release Date:2022/11/25
Tag:laser beam melting; multi-material; polyamide 12; vibrating nozzle
Institutes:Fakultät Maschinenbau
Fakultät Maschinenbau / Labor Additive and Intelligent Manufacturing for Sustainability (AIMS)
Publication:Externe Publikationen
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG