• Title/Summary/Keyword: DoD 인젝터

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Theoretical Analysis and Experimental Characterization of DoD Metal-Jet System (DoD 메탈젯 시스템의 이론적 해석 및 실험적 분석)

  • Lee, Taik-Min;Kang, Tae-Goo;Yang, Jeong-Soon;Jo, Jeong-Dai;Kim, Kwang-Young;Choi, Byung-Oh;Kim, Dong-Soo
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.31 no.1 s.256
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    • pp.11-17
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    • 2007
  • In this paper, we present a design, analysis, fabrication and performance test of the novel DoD metal-jet system for application to the high-density and high-temperature-melting materials. The theoretical analysis of the metal-jet nozzle system is derived by using electro-mechanical analogy. Based on the theoretical analysis results, we design the metal-jet print head system and fabricate the metal-jet system, which can eject the droplet of lead-free metal solder in high-temperature. In the experimental test, we set up the test apparatus for visualization of the droplet ejection and measure the ejected droplet volume and velocity. As a result, the diameter, volume and the velocity of the ejected droplet are about 65 $\mu$m $\sim$ 70 $\mu$m, 145p1 $\sim$ 180 pl and 4m/s, which shows quite good agreement with the theoretical analysis results of the 75 $\mu$m-diameter and 220 pl-volume of droplet. In comparison with the experimental result, the errors of diameter and volume are 7% $\sim$ 13% and 18 $\sim$ 34%, respectively.

Molten Metal Inkjet System (용융 메탈 잉크젯 시스템)

  • Lee Taik-Min;Kang Tae-Goo;Yang Jeong-Soon;Jo Jeong-Dai;Kim Kwang-Young;Kim Dong-Soo
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2006.05a
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    • pp.585-586
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    • 2006
  • In this paper, we present a design, analysis, fabrication and performance test of the novel DoD metal-jet system for application to the high-density and high-temperature-melting materials. Based on the theoretical analysis, we design the metal-jet print head system and fabricate the metal-jet system, which can eject the droplet of lead-free metal solder in the high-temperature. In the experimental test, we set up the test apparatus for visualization of the droplet ejection and measure the Ejected droplet volume and velocity. As a result, the diameter, volume and the velocity of the ejected droplet are about $65-70{\mu}m$, 145-180 pl and 4m/sec. We also fabricate vertical and inclined 3D micro column structures using the present molten metal inkjet system. The measured geometries of the micro column structures are about height of $2,100{\mu}m$, diameter of $200{\mu}m$ and aspect ratio of 10.5 for vertical micro column and $1,400{\mu}m$ of height and $150{\mu}m$ of diameter for $65^{\circ}$-inclined micro column, respectively.

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