بررسی تجربی و شبیه‌سازی اجزای محدود تاثیر نیروی پرس بر روی شکل‌دهی کانال‏ های صفحات دوقطبی فلزی در فرایند استمپینگ

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشکده مهندسی مکانیک، دانشگاه تربیت مدرس، تهران، ایران

2 دانشگاه صنعتی مالک اشتر، آزمایشگاه تحقیقاتی فناوری پیل سوختی، فریدونکنار، ایران.

3 آزمایشگاه تحقیقاتی فناوری پیل‌سوختی، دانشگاه صنعتی مالک اشتر، فریدونکنار

4 2آزمایشگاه تحقیقاتی فناوری پی لسوختی، دانشگاه صنعتی مالک اشتر، فریدو نکنار، ایران

5 آزمایشگاه تحقیقاتی فناوری پی لسوختی، دانشگاه صنعتی مالک اشتر، فریدو نکنار، ایران

چکیده

صفحات دوقطبی یکی از مهمترین بخش­ های پیل سوختی هستند که هزینه تولید زیادی را به همراه دارند. در این پژوهش، شکل پذیری صفحات دوقطبی فلزی با سطح فعال 100 سانتی­مترمربع از جنس فولاد زنگ نزن 316L با فرآیند شکل دهی استمپینگ موردبررسی قرارگرفته است. فرآیند شکل دهی استمپینگ نسبت به روش­ های دیگر شکل دهی دارای مزایایی همچون سادگی فرآیند، سرعت تولید بالاتر و هزینه تولید پایین تر می باشد. مسأله مهمی که در صفحات دوقطبی حائز اهمیت است، دقت ابعادی کانال­ های شکل داده شده می ­باشد. در این مقاله، پهنا و عدم تختی کانال و ریب صفحات تولیدشده موردبررسی قرارگرفته است. نتایج این پژوهش نشان داد که افزایش نیروی استمپینگ باعث افزایش جریان یافتن ورق شده که خود سبب افزایش در پهنای کانال و ریب می­ گردد. همچنین، میزان عدم تختی حاصل از برگشت فنری ورق نیز در این فرآیند در بازه تلورانسی کمتر از 02 / 0 میل یمتر قرار داشته و این صفحات می­ توانند به عنوان صفحات دوقطبی فلزی در سری پیل سوختی مورداستفاده قرار گیرند.

کلیدواژه‌ها

موضوعات

عنوان مقاله [English]

Experimental Investigation and Numerical Simulation of the Pressure Force on the Formation of Metallic Bipolar Plate in the Stamping Process

نویسندگان [English]

  • F. Ahmadi Khatir 1
  • Ebrahim Alizadeh 2
  • M. Barzegari 3
  • M. Momenifar 4
  • H. Masroori Saadat 5
1 Mechanical engineering, Tarbiat Modares Tehran, Tehran, Iran
2 Fuel Cell Technology Research Laboratory, Malek Ashtar University of Technology, Freydounkenar, Iran.
3 Fuel cell Technology Research laboratory, Malek Ashtar University of Technology, Fereydoonkenar, Iran
4 Fuel cell Technology Research laboratory, Malek Ashtar University of Technology, Fereydoonkenar, Iran
5 Fuel cell Technology Research laboratory, Malek Ashtar University of Technology, Fereydoonkenar, Iran
چکیده [English]

Bipolar plates are one of the most important parts of the fuel cell which have the highest production cost for the system. In this study, the formability of SS 316L bipolar plates with an active area of 100 cm2 by the stamping process is  investigated. With respect to various types of the forming process, stamping process has the advantages of simplicity, higher production speed, and lower production. In this process, the sheet is considered to be between two rigid die slabs, and applying force to the die set results in forming the plates. The important issue of bipolar plates is the dimension accuracy of the channels. In this paper, the width and flatness of the channels and ribs of the produced plates are investigated. If the tolerances of the formed channels are not in the desirable range, the performance of the fuel cell is disturbed and the fuel cell efficiency is considerably decreased. The results of this study demonstrate that increasing the  stamping force results in an increase of the width of channel and rib. Moreover, the flatness due to the spring-back of the sheet is in the desired tolerance range and these plates can be utilized as metallic bipolar plates in the fuel cell stacks.

کلیدواژه‌ها [English]

  • PEM fuel cell
  • Metallic bipolar plate
  • Stamping process
  • Flatness
  • Forming force

مراجع

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نشریه مهندسی مکانیک امیرکبیر
دوره 50، شماره 3
مرداد و شهریور 1397
صفحه 505-516

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