Qualification and modification of new polymer powders for laser beam melting using Ulbricht spheres
- The restricted amount of available materials for Laser Beam Melting (LBM) of polymers is one of the main limitations for expanding the technology. Current qualification methods deal with problems like inadequate powder flowability or high part porosities among others but do not offer a detailed analysis of the important beam-matter-interaction between powder particles and electro-magnetic laser radiation. In this paper, polyethylene powder is qualified for the LBM process and specifically analyzed regarding the optical material properties of the powder for a wavelength of 10.6 μm. By admixing graphite as absorption intensifier the change of the optical material properties and the thereby connected processing parameters are analyzed. Furthermore an explanation approach is given to explain the relation between different transmittances of different powder particles and the optical material properties of the polymer powders.
Author: | Tobias LaumerORCiDGND, T. Stichel, M. Sachs, Philipp AmendGND, Michael Schmidt |
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URL / DOI: | https://www.researchgate.net/publication/286311000_Qualification_and_modification_of_new_polymer_powders_for_laser_beam_melting_using_Ulbricht_spheres |
ISBN: | 978-1-138-00137-4 |
ISBN: | 1138001376 |
Parent Title (English): | High value manufacturing : Advanced research in virtual and rapid prototyping ; Proceedings of the 6th International Conference on Advanced Research and Rapid Prototyping, Leiraia, Portugal, 1-5 October, 2013 |
Publisher: | CRC Press |
Place of publication: | Boca Raton |
Editor: | Paulo Bártolo |
Document Type: | conference proceeding (article) |
Language: | English |
Year of first Publication: | 2014 |
Release Date: | 2022/11/25 |
First Page: | 255 |
Last Page: | 260 |
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 |