소성∙가공 (Transactions of Materials Processing)

  • 제19권4호
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  • Pages.253-262
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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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직사각 컵 성형을 위한 다단 디프드로잉 공정의 실험적 연구

Experimental Study on Non-Axisymmetric Rectangular Cup using Multi-Stage Deep Drawing Process

  • 구태완 (부산대학교 항공우주공학과) ;
  • 박중원 (부산대학교 대학원 항공우주공학과) ;
  • 허성찬 (부산대학교 대학원 항공우주공학과) ;
  • 강범수 (부산대학교 항공우주공학과)
  • 투고 : 2010.03.26
  • 심사 : 2010.06.08
  • 발행 : 2010.07.01
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초록

For multi-stage deep drawing process including ironing operation and biaxial forming in this study, tool developments are achieved, and the developed tool sets are applied to experimental investigations. In process and tool designs, a contact condition between intermediate blank and lower die is considered as the sequential one. In this study, the material used is cold-rolled thin sheet (SPCE) with the initial thickness of 0.4mm. From the experimental approaches, several failures such as tearing, localized thickening and thinning, are observed. To solve these failures, the contact surface on the lower die is modified. As the experimental results by applying the modified lower die, it is investigated that the failures are not occurred, and the excessive deformation behavior due to the thinning and thickening effects are decreased. Furthermore, the thickness distributions on the major axis and the minor axis of each intermediate blank are investigated to be already satisfied the target (ironing) thickness, respectively. By this systematic approach, it is confirmed that the experimental results show good agreements with the designed and required configuration of each deformed and final products.

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참고문헌

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  11. T. W. Ku, H. Y. Kim, W. J. Song, B. S. Kang, 2008, Process design and finite element analysis of rectangular cup used for Ni-MH battery with high aspect ratio, Trans. Mater. Process., Vol. 17, No. 3, pp. 107-181. https://doi.org/10.5228/KSPP.2008.17.3.170

피인용 문헌

  1. Tool Design and Numerical Verification for Thick Plate Forming of Hollow-Partitioned Steam Turbine Nozzle Stator vol.25, pp.6, 2016, https://doi.org/10.5228/KSTP.2016.25.6.379
  2. Numerical Analysis and Experimental Evaluation on Formability of Membrane for LNG Storage Tank vol.20, pp.6, 2011, https://doi.org/10.5228/KSTP.2011.20.6.409
  3. Numerical Simulation for a Multi-Stage Deep Drawing of Anisotropic SUS409L Sheet into a Rectangular Cup vol.22, pp.3, 2013, https://doi.org/10.5228/KSTP.2013.22.3.133
  4. Springback Minimization using Bottoming in Al Can Deep Drawing Process vol.17, pp.9, 2016, https://doi.org/10.5762/KAIS.2016.17.9.302