Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Fabrication Process of Aluminum Bipolar Plate for Fuel Cell using Vacuum Die Casting

진공 다이캐스팅 공법을 이용한 연료전지용 알루미늄 분리판의 제조 공정

  • Jin, Chul-Kyu (Department of Mechanical and Precision Engineering, Graduate School, Pusan National University) ;
  • Kang, Chung-Gil (Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
  • 진철규 (부산대학교 대학원, 정밀가공시스템공학과) ;
  • 강충길 (부산대학교 기계공학부)
  • Received : 2011.02.25
  • Accepted : 2011.03.24
  • Published : 2011.04.30
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Abstract

This study aims to investigate the formability of bipolar plates for fuel cell fabricated by vacuum die casting of ALDC 6. Cavity shape of mold is thin walled plate (size: $200mm{\times}200mm{\times}0.8mm$) with a serpentine channel (active area: $50mm{\times}50mm$). Before bipolar plate was made by HPDC, computational filling behavior and solidification was performed by MAGMA soft. The final mold design for location and direction of channel was determined by computational simulation. Also, according to injection speed conditions, simulation result was compared to actual die casting experimental result. When vacuum pressure, injection speed of low and high region is 350 mbar, 0.3 m/s and 2.5 m/s respectively, products had few casting defects. On the other hand, at the same as injection speed, without vacuum pressure, products had many casting defects between end of the channel and overflow.

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References

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