Transactions of Materials and Heat Treatment

Title：Accumulative forming for 304 stainless steel bipolar plate of micro fuel cell

Authors： Wu Junfeng Wang Yun Zhu Kai Chen Wanrong Yin Bifeng Zhang Yuanyuan

Unit： Jiangsu University

KeyWords： Micro proton exchange membrane fuel cell has the potential to become a new type of green energy whose key component is bipolar plate. High precision forming for bipolar plate under microscale is difficult which challenges the existing forming methods. Accumulation forming method on 304 stainless steel bipolar plate was put forward which is to employ the micro-punch corresponding to the form of channel to press the sheet metaland then form the bipolar plate under accumulation effects of local deformation and extrusion according to the channel direction and forming path. Meanwhile accumulative forming process was studied and forming rule for 304 stainless steel with direct channel was analyzed then the influence laws of different vertical press amounts on thickness change and flow depth springback rate were obtained.

ClassificationCode：

year,vol(issue):pagenumber：2014,39(4):47-50

Abstract：

Micro proton exchange membrane fuel cell has the potential to become a new type of green energy, whose key component is bipolar plate. High precision forming for bipolar plate under microscale is difficult，which challenges the existing forming methods. Accumulation forming method on 304 stainless steel bipolar plate was put forward，which is to employ the micro-punch corresponding to the form of channel to press the sheet metaland then form the bipolar plate under accumulation effects of local deformation and extrusion according to the channel direction and forming path. Meanwhile，accumulative forming process was studied and forming rule for 304 stainless steel with direct channel was analyzed, then the influence laws of different vertical press amounts on thickness change and flow depth springback rate were obtained.

Funds：

国家自然科学基金资助项目(50975126)；江苏省光子制造重点实验室基金资助项目（GZ201104）；数字化制造技术省高校重点建设实验室基金资助项目（HGDML-1002）；江苏省“333工程”科研项目（BRA2011180）

吴俊峰（1988-），男，硕士研究生

Reference：

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[4]Liu Y X, Han L. Fabrication of metallic bipolar plate for proton exchange membrane fuel cells by rubber pad forming[J]. Journal of Power Sources, 2010, 195(11): 3529-3535.

[5]Xu Z Y, Wang Y, Ding S, et al. Numerical investigation on micro-bending and springback with improved surface layer model[J]. International Journal of Materials and Product Technology, 2012, 45(1): 53-63.

[6]张圆圆. 微型燃料电池304不锈钢双极板累积成形及控制研究[D]. 镇江：江苏大学, 2013.

Zhang Yuanyuan. Accumulation Forming and Control of Bipolar Plate of 304 Stainless Steel for Micro Fuel Cell[D].Zhenjiang: Jiangsu University, 2013.

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