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Investigations for Material Tracing in Selective Laser Sintering : Part Ι: Methodical Selection of a Suitable Marking Agent

ORCID
0000-0001-5445-7848
Affiliation/Institute
Volkswagen AG Wolfsburg
Eggers, Tom;
Affiliation/Institute
Volkswagen AG Wolfsburg
von Lacroix, Frank;
Affiliation/Institute
Volkswagen AG Wolfsburg
van de Kraan, Fridolin;
Affiliation/Institute
Institut für Werkzeugmaschinen und Fertigungstechnik
Reichler, Ann-Kathrin;
GND
1058660217
ORCID
0000-0001-6809-7118
Affiliation/Institute
Institut für Werkzeugmaschinen und Fertigungstechnik
Hürkamp, André;
GND
121877787
ORCID
0000-0002-6424-4384
Affiliation/Institute
Institut für Werkzeugmaschinen und Fertigungstechnik
Dröder, Klaus

Selective laser sintering (SLS) with polymers is currently at the transition stage for the production of functional components and holds great potential to revolutionize conventional production processes. Nevertheless, its application capability is confronted by newly imposed requirements regarding reliability and reproducibility. To safeguard these requirements, a deeper process understanding of material aging mechanisms in polymeric materials is needed. In order to enable the traceability of the materials as well as the identification of defective components with subsequent tracing of the cause, the use of a material marking process represents an alternative. SLS in combination with material marking is proving to be an efficient option for reproducible, high-quality manufacturing based on an increased understanding of the process. In this study, the idea of a marker-based traceability methodology for the purpose of process optimization is presented. Fundamental to the subsequent experimental investigation of the marking agent suitability, this work first focuses on the systematic selection of a suitable marking agent for use in SLS. Based on an analysis of the sinter material to be marked and a set of marking technologies, as well as using the selection methodology, the modified polymer marking technology was evaluated as the most suitable marking technology.

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