Effect of stamping load variation on deformation behaviour of stainless steel thin plate with microchannel

  • Koo J
  • Jeon Y
  • Kang C
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A thin plate like a bipolar plate for a proton exchange membrane fuel cell is one of the core parts for improving the power density in a fuel cell. Stainless steel has excellent characteristics in terms of electrical resistivity, density, and thermal conductivity. Furthermore, stainless steel, instead of graphite, is used as a bipolar plate because it is cheaper and easier to machine. Therefore, in this study, a stainless steel alloy is selected as the ideal material for a bipolar plate. In this article, the results of feasibility experiments are presented; these experiments are performed with the aim of developing fuel cells using stainless steel bipolar plates with multiple channels. In this investigation, a dynamic load was applied, and the formability of microchannels was estimated with different punch pressures and die roundness, using a thin sheet metal of SUS304 with thicknesses of 0.3 and 0.1 mm. In the case of the die roundness of 0.1 mm, the formability is optimized with a sine wave dynamic load...

Author-supplied keywords

  • Bipolar plate
  • Dynamic load
  • Fuel cell
  • Microchannel
  • Stamping process
  • Thin plate

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  • Ja Yoon Koo

  • Yong Phil Jeon

  • Chung Gil Kang

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