Proceedings of the Korean Society for Technology of Plasticity Conference (한국소성가공학회:학술대회논문집)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
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Formability Study on Weld Line Location and Movement of Laser-Tailor Welded Blanks

  • Hong, Joo-Pyo (Dep't of Mechanical Engineering, Kangwon National University) ;
  • Kim, Heon-Young (Dep't of Mechanical Engineering, Kangwon National University) ;
  • Oh, Soo-Ik (Dep't of Mech. Design and Prod. Engng., Seoul National University)
  • Published : 1997.03.01
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Abstract

The weld line location and the weld line movement in stamping with laser-tailor welded blanks(TWB) were investigated through square cup deep drawing tests. The step blank holder was introduced to form TWB of different thicknesses without wrinkling, and the non-uniform blank holding force(BHF) was enforced to control weld line movement. Test results of the blanks with shifted weld lines showed that the large portion of the thinner area could result in a large weld line movement. Careful selection of the weld line location and the BHF control should be adapted in TWB design to avoid failures and to ensure its formability.

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