Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Fabrication Process and Forming Analysis of Fuel Cell Bipolar Plate by Injection Condition of Vacuum Die Casting

진공 다이캐스팅 공법의 사출조건에 따른 연료전지용 분리판 성형 해석 및 제조 공정

  • Jin, Chul-Kyu (Department of Mechanical and Precision Engineering, Graduate School, Pusan National University) ;
  • Jang, Chang-Hyun (Department of Mechanical and Precision Engineering, Graduate School, Pusan National University) ;
  • Kim, Jae-Sung (CAST TECH Co., Ltd.) ;
  • Choi, Jae-Won (NSC Ind. Co., Ltd.) ;
  • Kang, Chung-Gil (Engineering Research Center for Net Shape and Die Manufacturing, Pusan National University)
  • Received : 2011.08.24
  • Accepted : 2011.09.20
  • Published : 2011.10.31
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Abstract

The vacuum die casting is a promising candidate of the stamping process for fabrication of fuel cell bipolar plate due to its advantages, such as precision casting, mass production and short production time. This study proposes vacuum die casting process to fabricate bipolar plates in fuel cell. Bipolar plates were fabricated under various injection conditions such as molten metal temperature and injection velocity. Also, according to injection velocity conditions, simulation results of MAGMA soft were compared to the experimental results. In case of melt temperature $650^{\circ}C$, misrun occurred. When the melt temperature was $730^{\circ}C$, mechanical properties were low due to dendrite microstructure. Injection velocity has to set at more than 2.0 m/s to fabricate the sound sample. When melt temperature, injection velocity (Fast shot), and vacuum pressure are $700^{\circ}C$, 2.5 m/s and 30 kPa respectively, sample had good formability and few casting defects. Simulation results are mostly in agreement with experimental results.

Keywords

References

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