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

被引：22

作者：

Moqadam, Saeedeh Imani ^{[1
,2
]}

Maedler, Lutz ^{[1
,2
]}

Ellendt, Nils ^{[1
,2
]}

机构：

[1] Univ Bremen, Fac Prod Engn, Badgasteiner Str 1, D-28359 Bremen, Germany

[2] Leibniz Inst Mat Engn IWT, Badgasteiner Str 3, D-28359 Bremen, Germany

来源：

MICROMACHINES | 2019年 / 10卷 / 07期

关键词：

drop-on-demand; melt; metal; high temperature; droplet generator; micro sphere; DRIVEN; PARAMETERS; DEPOSITION; SHAPE;

D O I：

10.3390/mi10070477

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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 mu m to 1350 mu m at high temperatures of up to 1600 degrees 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.

引用

页数：12

共 34 条

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