DOI QR코드

DOI QR Code

Theoretical Analysis and Experimental Characterization of DoD Metal-Jet System

DoD 메탈젯 시스템의 이론적 해석 및 실험적 분석

  • 이택민 (한국기계연구원 정보장비연구센터) ;
  • 강태구 (한국기계연구원 정보장비연구센터) ;
  • 양정순 (한국기계연구원 정보장비연구센터) ;
  • 조정대 (한국기계연구원 정보장비연구센터) ;
  • 김광영 (한국기계연구원 경남기계기술지원단) ;
  • 최병오 (한국기계연구원 지능형정밀기계연구본부) ;
  • 김동수 (한국기계연구원 정보장비연구센터)
  • Published : 2007.01.01

Abstract

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.

Keywords

Metal-Jet;DoD Injector;Inkjet;Printing;Solder-Jet

References

  1. Wilkes, E. D., and Basaran, O. A., 2001, 'Drop Ejection from an Oscillating Rod,' J. of Colloid and interface science, No. 242, pp. 180-201 https://doi.org/10.1006/jcis.2001.7729
  2. Eom, H. C., Cho, K. M., Song, I. H., and Hahn, Y. D., 2003, 'Investigation of Preocess Parameters on Lead-free Solder Balls Fabricated by Droplet-Based Manufacturing Process,' J. Kor. Inst. Met. & Mater., Vol. 41, No. 1, pp. 56-63
  3. Hayes, D., Cox, W., and Grove, M., 1999, 'Low- Cost Display Assembly and Interconnect Using Ink-Jet Printing Technology,' Display Works
  4. Yim, P., Chun, J., Ando, T., and Sikka, V., 1996, 'Production and Characterization of Mono-sized Sn-Pb alloy balls,' Int. J. of Powder Metallurgy, Vol. 32, No. 2, pp. 155-164
  5. Orme, M., Courter, J., Liu, Q., Huang, C., and Smith, R., 2000, 'Electrostatic Charging and Deflection of Nonconventional Droplet Streams Formed from Capillary Stream Breakup,' Physics of Fluids, Vol.12, No. 9, pp.2224-2235 https://doi.org/10.1063/1.1287653
  6. Ayers, S., Hayes, D, Boldman, M., Wallace, D., 1998, 'Printhead for Liquid Metals and Method of Use,' U.S. Patent 5772106
  7. Sohn, H. and Yang, D., 2005, 'Drop-on-demand Deposition of Superheated Metal Droplets for Selective Infiltration Manufacturing,' Materials Science and Engineering A, 392, pp. 15-421 https://doi.org/10.1016/j.msea.2004.09.049
  8. Fox, R. W. and McDonald, A. T., 1985, Introduction to Fluid Mechanics, John Wiley & Sons, Inc., pp.339
  9. Fox, R. W. and McDonald, A. T., 1985, Introduction to Fluid Mechanics, John Wiley & Sons, Inc., pp.347
  10. Yamaguchi, K., Sakai, K., Yamanaka, T., and Hirayama, T., 2000, 'Generation of Three-dimensional Micro Structure Using Metal Jet,' Precision Engineering, 24, pp. 2-8 https://doi.org/10.1016/S0141-6359(99)00015-X