Qualification and modification of new polymer powders for laser beam melting using Ulbricht spheres
Laumer T, Stichel T, Sachs M, Amend P, Schmidt M (2014)
Publication Type: Conference contribution
Publication year: 2014
Pages Range: 255-260
Conference Proceedings Title: High Value Manufacturing: Advanced Research in Virtual and Rapid Prototyping - Proceedings of the 6th International Conference on Advanced Research and Rapid Prototyping, VR@P 2013
Event location: PRT
ISBN: 9781138001374
Abstract
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. © 2014 Taylor & Francis Group.
Authors with CRIS profile
Tobias Laumer
Lehrstuhl für Photonische Technologien
Marius Christ
Sonderforschungsbereich 814/3 Additive Fertigung
Michael Schmidt
Lehrstuhl für Photonische Technologien
Involved external institutions
Germany (DE)How to cite
APA:
Laumer, T., Stichel, T., Sachs, M., Amend, P., & Schmidt, M. (2014). Qualification and modification of new polymer powders for laser beam melting using Ulbricht spheres. In High Value Manufacturing: Advanced Research in Virtual and Rapid Prototyping - Proceedings of the 6th International Conference on Advanced Research and Rapid Prototyping, VR@P 2013 (pp. 255-260). PRT.
MLA:
Laumer, Tobias, et al. "Qualification and modification of new polymer powders for laser beam melting using Ulbricht spheres." Proceedings of the 6th International Conference on Advanced Research in Virtual and Physical Prototyping, VR@P 2013, PRT 2014. 255-260.
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