Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A Study on Development of Large-capacity Aluminum Heat Sinks Brazed with a Batch Furnace

대용량 알루미늄 브레이징 히트싱크 개발에 관한 연구

  • Lee, Young-Lim (Department of Mechanical and Automotive Engineering, Kongju National University) ;
  • Hwang, Soon-Ho (Department of Mechanical and Automotive Engineering, Kongju National University) ;
  • Jeon, Euy-Sik (Department of Mechanical and Automotive Engineering, Kongju National University)
  • 이영림 (공주대학교 기계자동차공학부) ;
  • 황순호 (공주대학교 기계자동차공학부) ;
  • 전의식 (공주대학교 기계자동차공학부)
  • Published : 2009.07.31
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Abstract

Recently demand for large-capacity aluminum heat sinks has been increased as market for high power electricity expands and high-performance electronic products develop. While the brazed heat sinks are in particular preferred, it is almost impossible to manufacture them with an atmospheric continuous furnace due to insufficient heating rate and various thickness of the parent metals. Therefore, a new index batch furnace is developed and the process variables are optimized. Then, brazing efficiency and tensile stress are obtained for brazed parts of the heat sinks. Finally experiment as well as numerical analysis has been performed to compare thermal efficiency of the brazed heat sinks with that of the silicone-bonded heat sinks.

최근들어 고전력 및 고성능 전자제품 시장이 확대됨에 따라 대용량 알루미늄 히트싱크의 수요가 급증하고 있다. 이를 위해 고효율의 브레이징 히트싱크가 선호되고 있지만, 기존의 대기 연속로에서는 불충분한 가열과 모재금속의 서로 다른 두께 때문에 생산이 사실상 불가능하다. 따라서, 본 연구에서는 브레이징 히트싱크 개발을 위하여 새로운 인덱스 배치로 및 브레이징 공정을 최적화하였다. 또한, 개발된 브레이징 히트싱크에 대하여 용착효율 및 인장응력 실험도 수행하였다. 끝으로 브레이징 히트싱크와 실리콘 히트싱크의 열저항에 대한 실험을 통하여 수치해석 결과와 비교 검증하였다.

Keywords

References

  1. Y. S. Shin, "Selection Technology for Brazing Fluxes", Journal of KWS, Vol. 22. No. 5. pp. 412-419, October, 2004.
  2. J. P. Jung, T. Takemoto and C. S. Kang, "Aluminum Vacuum Brazing in Japan", journal of KWS, Vol. 13, No. 1, pp. 62-72, Mar, 1995.
  3. J. P. Jung, T. Takemoto and C. S. Kang, "Non-corrosive Flux Brazing of Aluminum", Journal of KWS, Vol. 13, No. 2, pp. 53-59, Jun, 1995.
  4. B. M. Lim, S. H. Hong, J. I. Jeong, J. H. Choi and W. S. Chung, "Effect of Corrosion Products of Hot-Dip Al-Cr Steel Sheet on the Corrosion Resistance in Salt Corrosive Environment", J. Kor. Inst. Met. & Mater. Vol. 41, No. 10, 2003.
  5. C. N. Kim, S. I. Moon, "A Numerical Study on the Heat Transfer of Extruded Heat Sink", The Journal of Materials Science and Technology. Vol. 11, pp. 27-32, 1998.
  6. J. H. Kim, J. H. Yun, C. S. Lee, "An Experimental Study on the Thermal Resistance Characteristics for Various Types of Heat Sinks", International Journal of Air-Conditioning and Refrigeration, v.14 n.8, pp. 676-682, 2002.
  7. Frank P. Incropera and David P. DeWitt, "Fundamentals of Heat and Mass Transfer", 4th Edition, Wiley, New York, 1996
  8. Fluent, Version 6.1, fluent, Inc., Lebanon, NH 2005