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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Hot Forging Process of High Strength Ti-6Al-4V Bolt

Ti-6Al-4V 고강도 볼트 성형 기술 개발

  • 김정한 (한국기계연구원, 재료기술연구소) ;
  • 이채훈 (한국기계연구원, 재료기술연구소/특수합금연구그룹) ;
  • 홍재근 (한국기계연구원, 재료기술연구소/특수합금연구그룹) ;
  • 김재호 (신진볼택, 냉간사업부) ;
  • 염종택 (한국기계연구원, 재료기술연구소/특수합금연구그룹)
  • Published : 2008.10.09
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Abstract

Since fastener bolt for airplane require high specific strength and corrosion resistance, Ti-6Al-4V alloy is widely used. However, the Ti-6Al-4V bolt is generally manufactured by cutting and rolling because of their poor workability. The aim of present work is to develop hot forming technology for high strength Ti-6Al-4V. Various heat-treatments were applied to specimen in order to increase hot-workability and prevent galling with die Multiple forging were simulated with FE code to determine optimum process parameters including specimen temperature, strain rate, local strain, and thermal shrinkage. Forged samples were heat-treated again to increase their mechanical properties.

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