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Journal of Polymer Engineering

Editor-in-Chief: Grizzuti, Nino


IMPACT FACTOR 2017: 0.778

CiteScore 2017: 0.77

SCImago Journal Rank (SJR) 2017: 0.244
Source Normalized Impact per Paper (SNIP) 2017: 0.551

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2191-0340
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Volume 38, Issue 7

Issues

Selective laser melting of polymers: influence of powder coating on mechanical part properties

Maximilian Drexler
  • Corresponding author
  • Institute of Polymer Technology, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Collaborative Research Center 814 – Additive Manufacturing, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
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  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Sandra Greiner
  • Institute of Polymer Technology, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Collaborative Research Center 814 – Additive Manufacturing, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Matthias Lexow
  • Institute of Polymer Technology, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
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  • De Gruyter OnlineGoogle Scholar
/ Lydia Lanzl
  • Institute of Polymer Technology, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Collaborative Research Center 814 – Additive Manufacturing, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Katrin Wudy
  • Institute of Polymer Technology, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Collaborative Research Center 814 – Additive Manufacturing, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
/ Dietmar Drummer
  • Institute of Polymer Technology, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Collaborative Research Center 814 – Additive Manufacturing, Friedrich-Alexander Universität Erlangen-Nürnberg, Am Weichselgarten 9, 91058 Erlangen, Germany
  • Other articles by this author:
  • De Gruyter OnlineGoogle Scholar
Published Online: 2018-07-20 | DOI: https://doi.org/10.1515/polyeng-2017-0133

Abstract

For the derivation of part quality increasing process strategies, knowledge about interactions between sub-processes of selective laser melting (SLM) and resulting part properties is necessary. The SLM process consists of three major sub-processes: powder coating, exposure, and material consolidation. According to the interaction of sub-processes, resulting processing conditions during SLM determine the part properties by changing micro structural pore number and distribution. In addition to absolute temperatures, the time-dependency of the thermal fields also influences the porosity of molten parts. Present process strategies tend to decrease building time by acceleration of the subprocesses. Apart from prior investigated acceleration of the exposure, the powder coating step is focused. Within the paper, the authors analyze the basic interactions between different coating parameters and part properties. The authors estimate an interaction between coating speed and resulting part properties due to a force impact caused by the moved coating mechanism. Therefore, specimens produced with different coating speeds are analyzed with imaging technologies as well as mechanical tests. Based on the investigations, new processing strategies can be established considering the forces applied to the powder bed during the coating process, as well as the unique compaction behavior of current and future used powders.

Keywords: coating speed; mechanical properties; powder coating; selective laser sintering of polymers

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About the article

Received: 2017-04-13

Accepted: 2017-12-23

Published Online: 2018-07-20

Published in Print: 2018-08-28


Citation Information: Journal of Polymer Engineering, Volume 38, Issue 7, Pages 667–674, ISSN (Online) 2191-0340, ISSN (Print) 0334-6447, DOI: https://doi.org/10.1515/polyeng-2017-0133.

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