|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Numerical Investigations of the Coating Process during Powder Bed Additive Manufacturing
||Mustafa Megahed, Wolfgang Ottow
|On-Site Speaker (Planned)
In spite of the significant time required to spread powder and the importance of obtaining a uniform powder bed for process stability and product quality, very few studies on powder coating have been reported. Preliminary numerical studies have shown unexpected low packing densities with large differences along the powder bed [Mindt, 2016].
This paper systematically analyzes the coating process numerically. Several metrics characterizing the powder layer are introduced prior to studying two different commercial powders. One powder has a high fraction of small particles and the other has larger particles. Multiple process parameters are analyzed. Results show the powder size distribution on the processing table and the recycled bin. One of the interesting findings with significant financial implications is that the quality of spread powder and recycled powder can be significantly enhanced (unified) if the coating parameters are fine tuned.
||Planned: Supplemental Proceedings volume