Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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The Effect of Mechanical Property of Tailor Welding Blank and Hot Press Forming Process by the Different Anti-oxidation Coating Treatment on Boron-steel Sheet

핫프레스포밍 공정에서 내산화 코팅처리가 TWB 용접부 특성에 미치는 영향

  • Kim, Sang-Gweon (Korea Institute of Industrial Technology (KITECH) Incheon Regional Division) ;
  • Lim, Ok-Dong (AUTOGEN) ;
  • Lee, Jae-Hoon (Korea Institute of Industrial Technology (KITECH) Incheon Regional Division)
  • 김상권 (한국생산기술연구원 인천지역센터) ;
  • 임옥동 ((주)오토젠 기술연구소) ;
  • 이재훈 (한국생산기술연구원 인천지역센터)
  • Received : 2012.09.03
  • Accepted : 2012.10.13
  • Published : 2012.11.30
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Abstract

In order to increase the anti-oxidation property during the tailor welding blanked hot press forming process for a high strength boron steel sheet, we performed a different coating method on the boron-steel sheet such as 87% Al - 13% Si and Fe - 8.87 Zn dipping plating procedure. However, during laser welding process, the Al-Si coated steel sheet has showed a low tensile strength and about half value of elongation than the original boron-steel sheet. Aluminum and silicon, elements of coating layer were diffused into the boron-steel matrix and have shown a low strength result than non-coated specimen. On the other hand, Zinc-coated boron-steel has expectedly showed a excellent tensile strength and micro-harness value in the welded area like original boron-steel.

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References

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