Feasibility of Forming U-Shaped Microchannels by Flexible-Die Forming Process

Document Type : Original Article

Authors

1 Department of Mechanical Engineering, University of Kashan, Kashan, Iran

2 Department of Mechanical Engineering, Babol Noushiravani University of Thechnology, Babol, Iran

3 Assistant Professor/ Department of Mechanical Engineering/Faculty of Enghelabe- Eslami/ Technical and Vocational University

4 Department of Mechanical Engineering, Tarbiat Modares University, Tehran, Iran

5 Cheongju University

Abstract

Metallic bipolar plates can be mentioned as one of the main components of the fuel cell. Various methods such as hydroforming process, electromagnetism, stamping, and rubber forming are used to produce these plates. In this study, the effect of rubber layer on the production of the metallic bipolar plate by the rubber forming method was investigated. The forming die with a convex pattern and parallel helical grooves was used to fabricate bipolar plates made of SS316 with a thickness of 0.1 mm. First, the effect of forming force on channel depth in both transverse and longitudinal directions was studied. Experimental results indicated that there is a direct relationship between the depth of the channel and the applied force, and the maximum depth of the channel occurs in the transverse direction. In addition, the effect of hardness of rubber on the channel depth of bipolar plates was investigated. The results showed that the maximum depth of the channel decreases with increasing hardness of the rubber. On the other hand, with a large decrease in the hardness of the rubber layer, it would be difficult to provide the pressure for applying the plastic deformation on the sheet metal. Then, the depth of the middle and side channels in the longitudinal direction was measured in order to evaluate the dimensional accuracy of the channels. The experimental results showed that the depth of the channels is uniform in this direction, which indicates the acceptable dimensional accuracy for the fabricated samples.

Keywords

Main Subjects

References

[1] Blunk, R. H. J., Lisi, D. J., Yoo, Y-E., & Tucker III, C. L. (2003). Enhanced conductivity of fuel cell plates through controlled fiber orientation. American Institute of Chemical Engineers Journal, 49(1), 18-29. https://doi.org/10.1002/aic.690490104
[2] Müller, A., Kauranen, P., Von Ganski, A., & Hell, B. (2006). Injection moulding of graphite composite bipolar plates. Journal of Power Sources, 154(2), 467-471. https://doi.org/10 .1016/j.jpowsour.2005.10.096
[3] Peker, M. F. (2012). Investigations on the micro-scale surface interactions at the tool and workpiece interface in micro-manufacturing of bipolar plates for proton exchange membrane fuel cells [Doctor, Virginia Commonwealth University]. Richmond, Virginia. https://scholarscompass.vcu.edu/cgi/viewcontent.cgi?referer=&httpsredir=1&article=3759&context=etd
[4] Bar-On, I., Kirchain, R., & Roth, R. (2002). Technical cost analysis for PEM fuel cells. Journal of Power Sources, 109(1), 71-75. https://doi.org/10.1016/S0378-7753(02)0 0062-9
[5] Sopian, K., & Wan Daud, W. R. (2006). Challenges and future developments in proton exchange membrane fuel cells. Renewable Energy, 31(5), 719-727. https://doi.org/10.1016/j.renene. 2005.09.003
[6] Heinzel, A., Mahlendorf, F., & Jansen, C. (2009). Bipolar Plates. In Proton-Exchange Membrane Fuel Cells. Elsevier. https://booksite.elsevier.com/brochures/ecps/PDFs /BipolarPlates.pdf
[7] Ghaffari Torab Torki, R., Hassan, M. N., Kasaei, M. M., & Talebi-Ghadikolaee, H. (2020). Numerical and Experimental Study on Guillotine Shearing of a Complex Profile Produced by Roll Forming process. Journal of Solid and Fluid Mechanics, 10(3), 1-15. https://doi.org/10.22044/jsfm.2020.8537.2952
[8] Li, Z., Tang, J., & Bai, J. (2020). A novel micro-EDM method to improve microhole machining performances using ultrasonic circular vibration (UCV) electrode. International Journal of Mechanical Sciences, 175(8), 105574. https://doi.org/10.1016/j.ijmecsci.2020.105574
[9] Liu, S., Xia, Y., Liu, Y., Shi, Z., Yu, H., Li, Z., & Lin, J. (2022). Tool path planning of consecutive free-form sheet metal stamping with deep learning. Journal of Materials Processing Technology, 303(2), 117530. https://doi.org/10.1016/j.jmatprotec.2022.117 530
[10] Maleki, A., Ahmadi, A., & Talebi-Ghadikolaei, H. (2019). Numerical Investigation of Bending Angle and Entropy Generation in Laser Forming of High Strength Steel. Journal of Solid and Fluid Mechanics, 9(4), 151-166. https://doi.org/10.22044/jsfm. 2020.7875.2791
[11] Liu, Y., & Hua, L. (2010). Fabrication of metallic bipolar plate for proton exchange membrane fuel cells by rubber pad forming. Journal of Power Sources, 195(11), 3529-3535. https://doi.org/10.1016/j.jpowsour.2009.12.046
[12] Lim, S. S., Kim, Y. T., & Kang, C. G. (2013). Fabrication of aluminum 1050 micro-channel proton exchange membrane fuel cell bipolar plate using rubber-pad-forming process. The International Journal of Advanced Manufacturing Technology, 65(1), 231-238. https://doi.org/10.1007/s00170-012-4162-8
[13] Belali-Owsia, M., Bakhshi-Jooybari, M., Hosseinipour, S. J., & Gorji, A. H. (2015). A new process of forming metallic bipolar plates for PEM fuel cell with pin-type pattern. The International Journal of Advanced Manufacturing Technology, 77(5), 1281-1293. https://doi.org/10.1007/s00170-014-6563-3
[14] Jeong, M-G., Jin, C-K., Hwang, G-W., & Kang, C-G. (2014). Formability evaluation of stainless steel bipolar plate considering draft angle of die and process parameters by rubber forming. International Journal of Precision Engineering and Manufacturing, 15(5), 913-919. https://doi.org/10.1007/s12541-014-0417-7
[15] Bakhshi, M., Mohammadtabar, N., Hosseinipour, S. J., & Gorji, A. (2014). The Study of effective parameters in hydroforming of fuel cell metallic bipolar plates with parallel serpentine flow field. Modares Mechanical Engineering, 14(8), 17-27. https://mme.mod ares.ac.ir/article-15-7256-en.html
[16] Belali Osia, M., Hosseinipour, S. J., Bakhshi, M., & Gorji, A. (2015). Forming of metallic bipolar plate with pin-type pattern by using hydroforming process in convex die. Modares Mechanical Engineering, 14(10), 150-158. https://mme.modares.ac.ir/article-15-1250-en.html
[17] Talebi-Ghadikolaee, H., Barzegari, M. M., Ahmadi Khatir, F., & Seddighi, S. (2022). Numerical-experimental study on the thickness distribution of metallic bipolar plates for PEM fuel cells. Hydrogen, Fuel Cell & Energy Storage, 9(1), 1-18. https://doi.org/10.22 104/ijhfc.2021.5217.1230
Karafan Quarterly Scientific Journal
Volume 19, Issue 3 - Serial Number 59
Technical and Engineering
December 2022
Pages 53-70

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History

  • Receive Date: 11 April 2022
  • Revise Date: 24 April 2022
  • Accept Date: 30 April 2022

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