소성∙가공 (Transactions of Materials Processing)

  • 제19권1호
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  • Pages.38-43
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  • 2010
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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전자기 로렌쯔력을 이용한 박판성형 장비 개발

Development of Sheet Metal Forming Apparatus Using Electromagnetic Lorentz Force

  • 이현민 (부산대학교 항공우주공학과 대학원) ;
  • 강범수 (부산대학교 항공우주공학과) ;
  • 김정 (부산대학교 항공우주공학과)
  • 발행 : 2010.02.01
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초록

Electromagnetic forming (EMF) method is one of high-velocity forming processes, which uses electromagnetic Lorentz force. Advantages of this forming technique are summarized as improvement of formability, reduction in wrinkling, non-contact forming and applications of various forming process. In this study, the EMF apparatus is developed. It is designed to be stored in 10 capacitors connected in parallel, each with a capacitance of $50{\mu}F$ and maximum working voltage of 5kV. The system has capacitance of $500{\mu}F$ and maximum stored energy of 6.25kJ. And EMF experiments are carried out to verify the feasibility of the EMF apparatus, which has enough forming force from the results of EMF experiment. In addition, peak current carrying a forming coil is predicted from theoretical background, and verified the predicted value compared with experimental value using the current measurement equipment. Consequently, EMF apparatus developed in this study can be applied to various EMF researches for commercialization.

키워드

참고문헌

  1. J. S. Lee, 1988, Electromagnetic forming method, Trans. of the KSME, Vol. 28, No. 5, pp. 476-486.
  2. S. C. Chung, G. B. Choi, H. C. Sin, N. H. Kim, J. S. Lee, 1993, Analysis of tube compression with a mandrel by electromagnetic forming, Trans. of the KSME, Vol. 17, No. 2, pp. 371-379.
  3. Young-Bae Park, Heon-Young Kim, Soo-ik Oh, 2005, Design of axial/torque joint made by electromagnetic forming, THIN-WALLED STRUCTURES, Vol. 43, pp. 826-844. https://doi.org/10.1016/j.tws.2004.10.009
  4. Y. H. Seo, S. C. Heo, T. W. Ku, W. J. Song, B. S. Kang, J. Kim, 2008, Numerical simulation of thin sheet metal forming process using electromagnetic force, Trans. of Materials Processing, Vol. 17, No. 1, pp. 35-45. https://doi.org/10.5228/KSPP.2008.17.1.035
  5. Mitchel E. Schultz, 2009, Grob's basic electronics (10th ed), McGraw-Hill.
  6. Manish Kamal, Grenn S. Daehn, 2007, A uniform pressure electromagnetic actuator for forming flat sheet, Journal of Manufacturing Science and Engineering, Vol. 129, pp. 369-379. https://doi.org/10.1115/1.2515481
  7. H. M. Lee, J. K. Ku, H. G. Noh, W. J. Song, T. W. Ku, B. S. Kang, J. Kim, 2009, Development of Forming Equipment Using Electromagnetic Lorentz Force, KSTP 2009 conference, pp. 313-317.

피인용 문헌

  1. Experimental Study of Pattern Emboss Forming using an Electromagnetic Force vol.23, pp.6, 2014, https://doi.org/10.5228/KSTP.2014.23.6.363
  2. Development of Cable Lug Joint Using Electromagnetic Force vol.22, pp.1, 2013, https://doi.org/10.7735/ksmte.2013.22.1.156
  3. Experimental study on forming behavior of high-strength steel sheets under electromagnetic pressure vol.229, pp.4, 2015, https://doi.org/10.1177/0954405414538258
  4. Analysis of Electromagnetic Forming Using Sequential Electromagnetic-Mechanical Coupled Simulations vol.21, pp.7, 2012, https://doi.org/10.5228/KSTP.2012.21.7.441
  5. Study on Formability Enhancement of Electromagnetic Forming using Gurson Plasticity Material Model vol.21, pp.3, 2013, https://doi.org/10.7467/KSAE.2013.21.3.098
  6. Design of a Free Bulge Test Coil Using Electromagnetic Forces and Comparison between Experimental and Numerical Results vol.23, pp.7, 2014, https://doi.org/10.5228/KSTP.2014.23.7.431