Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Influence of Powder Parameters on Powder Bed and Productivity of l-pbf

Version 1 : Received: 29 January 2021 / Approved: 1 February 2021 / Online: 1 February 2021 (10:20:52 CET)

How to cite: Johannes, S.; Johannes, H. Influence of Powder Parameters on Powder Bed and Productivity of l-pbf. Preprints 2021, 2021020007 (doi: 10.20944/preprints202102.0007.v1). Johannes, S.; Johannes, H. Influence of Powder Parameters on Powder Bed and Productivity of l-pbf. Preprints 2021, 2021020007 (doi: 10.20944/preprints202102.0007.v1).

Abstract

While L-PBF offers advantages in terms of geometrical freedom or lightweight construction, its use is often limited by economic constraints or currently achievable part costs. With an anticipated increase of L-PBF machine productivity during the next years, an increase of the share of material costs and the share of non-productive time for powder layer application process is to be expected. This results in a demand for less expensive powder materials and advanced processing strategies for the short-and medium-term advancement of L-PBF. As one possible approach, the processing of gas- and water atomized stainless steel (316L) powders with different morphology and particle size distribution as well as their impact on L-PBF productivity is investigated. The actual powder applicability in L-PBF systems and the L-PBF processability determines the minimum necessary powder quality. The main focus of the presented work is put on the interaction between powder quality, powder layer properties, part quality and cost-effectiveness of the L-PBF process. To this end, the influence of the gas and water-atomized powder properties (particle size and morphology) during the powder layer application process at highest possible powder recoater speeds and the resulting powder bed properties (powder layer density, powder bed density, powder demixing) and part properties (part density and tensile strength) is investigated.

Subject Areas

Additive Manufacturing; Laser Powder Bed Fusion; L-PBF; powder recoating; powder layer; powder bed; properties powder quality, productivity

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our diversity statement.

Leave a public comment
Send a private comment to the author(s)
Views 0
Downloads 0
Comments 0
Metrics 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.