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Article

A High Temperature Drop-On-Demand Droplet Generator for Metallic Melts

1
Faculty of Production Engineering, University of Bremen, Badgasteiner Straße 1, 28359 Bremen, Germany
2
Leibniz Institute for Materials Engineering IWT, Badgasteiner Straße 3, 28359 Bremen, Germany
*
Author to whom correspondence should be addressed.
Micromachines 2019, 10(7), 477; https://doi.org/10.3390/mi10070477
Received: 20 June 2019 / Revised: 5 July 2019 / Accepted: 11 July 2019 / Published: 17 July 2019
(This article belongs to the Section D:Materials and Processing)
In this study we present the design and functionality of a pneumatic drop-on-demand droplet generator that produces metallic micro particles with a size range of 300 µm to 1350 µm at high temperatures of up to 1600 °C. Molten metal droplets were generated from an EN 1.3505 (AISI 52100) steel which solidified during a falling distance of 6.5 m. We analyzed the resulting particle size and morphology using static image analysis. Furthermore, the droplet formation mode was analyzed using high-speed recordings and the pressure oscillation was measured in the crucible. The system is meant to be reproducible in all aspects and therefore the in-situ measurements are set to control the droplet size and trajectory during the run. Additionally, the ex-situ measurements are done on the particles in order to characterize them in size and morphology aspects. View Full-Text
Keywords: drop-on-demand; melt; metal; high temperature; droplet generator; micro sphere drop-on-demand; melt; metal; high temperature; droplet generator; micro sphere
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MDPI and ACS Style

Imani Moqadam, S.; Mädler, L.; Ellendt, N. A High Temperature Drop-On-Demand Droplet Generator for Metallic Melts. Micromachines 2019, 10, 477. https://doi.org/10.3390/mi10070477

AMA Style

Imani Moqadam S, Mädler L, Ellendt N. A High Temperature Drop-On-Demand Droplet Generator for Metallic Melts. Micromachines. 2019; 10(7):477. https://doi.org/10.3390/mi10070477

Chicago/Turabian Style

Imani Moqadam, Saeedeh; Mädler, Lutz; Ellendt, Nils. 2019. "A High Temperature Drop-On-Demand Droplet Generator for Metallic Melts" Micromachines 10, no. 7: 477. https://doi.org/10.3390/mi10070477

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