| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
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2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Comparative Analysis of Process Stability in PBF-LB/M: (Thermal) Highspeed Imaging vs. Melt Pool Monitoring using Novel Gas Mixtures |
| Author(s) |
Tobias Deckers, Pierre Forêt, Franz Wolf, Stefan Kleszczynski, Gerd Witt |
| On-Site Speaker (Planned) |
Tobias Deckers |
| Abstract Scope |
The powder bed fusion of metals using a laser beam (PBF-LB/M) is increasingly gaining popularity in the industry. However, to compete with established manufacturing processes, ensuring a consistent quality of parts processed by PBF-LB/M is crucial. In-situ process monitoring systems, such as coaxial melt pool monitoring (MPM), can contribute to this goal by minimizing post-process quality control. To identify the relevant phenomena to be monitored, firstly, two monitoring systems, a commercially available MPM system and a thermal high-speed camera, were compared. Secondly, the suitability of the MPM system for in-situ quality control was tested by employing novel gas mixtures to the process. The mixtures include argon with hydrogen, helium, and carbon dioxide. The first results showed the capabilities of the MPM system to monitor relevant process anomalies. Also, the addition of helium and hydrogen to the process gas resulted in an improvement in the melt pool stability compared to argon. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |