Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Influence of Drop Velocity and Droplet Spacing on the Equilibrium Saturation Level in Binder Jetting

Version 1 : Received: 22 January 2021 / Approved: 25 January 2021 / Online: 25 January 2021 (13:05:26 CET)

How to cite: Colton, T.; Liechty, J.; McLean, A.; Crane, N. Influence of Drop Velocity and Droplet Spacing on the Equilibrium Saturation Level in Binder Jetting. Preprints 2021, 2021010496 (doi: 10.20944/preprints202101.0496.v1). Colton, T.; Liechty, J.; McLean, A.; Crane, N. Influence of Drop Velocity and Droplet Spacing on the Equilibrium Saturation Level in Binder Jetting. Preprints 2021, 2021010496 (doi: 10.20944/preprints202101.0496.v1).

Abstract

Understanding the equilibrium saturation level is crucial to Binder Jetting (BJ). Saturation level influences dimensional accuracy, print time, green strength, and final material properties. Improved understanding of the saturation level can reduce development time for new materials and improve existing processes in BJ. Attempts have been made to predict saturation levels of parts with simple calculations from droplet primitives and capillary pressure. There is, however, limited experimental validation for these methods and they do not include the impact of drop velocity and droplet spacing. This study incorporates the influences of drop velocity and droplet spacing on the saturation level of the part. Drop primitives of varying droplet velocity and droplet spacing were compared. Results show that velocity impacts the feasible parameter space.

Keywords

Additive Manufacturing; Binder Jetting

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