Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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Effects of Thickness, Base Element and Additive to Inoculant on the Number of Eutectic Cells and Chill Depth of Thin-Section Gray Cast Iron

박육주철의 공정 셀 수와 칠 깊이에 미치는 두께, 기본 원소 및 접종제 첨가 원소의 영향

  • Kim, Tae-Hyeong (Liguid Processing & Casting Technology R&D Group, Korea Institute of Industrial Technology) ;
  • Lee, Woo-Jong (Dept. of Mat. Sci. & Eng., Graduate School, Yeungnam Univ.) ;
  • Kwon, Hae-Wook (School of Mat. Sci & Eng., Yeungnam univ.)
  • 김태형 (한국생산기술연구원 주조공정연구그룹) ;
  • 이우종 (영남대학교 대학원 신소재공학과) ;
  • 권해욱 (영남대학교 신소재공학부)
  • Received : 2012.10.22
  • Accepted : 2012.11.05
  • Published : 2012.12.31
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Abstract

The effects of thickness, base element and additive to inoculant on the number of eutectic cells and chill depth of thin-section gray cast iron were investigated. Meanwhile the number of eutectic cells increased by inoculation, chill depth decreased. The former decreased and the latter increased by holding the melt at the temperature range between 1,450 and $1,500^{\circ}C$. The former was more for the thinner casting with the thickness of 5 mm than the other. The result of thermal analysis coincided well with the change of macrostructure. The former increased and the latter decreased with the increased contents of carbon, silicon and the silicon content by inoculation. The former decreased and the latter increased with increased manganese content. The number of eutectic cells decreased as the amounts of rare earth and the bismuth added to this inoculant increased. With the addition of sulfur of 0.10 wt% of the weight of this inoculant, the maximum number of eutectic cells was obtained.

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References

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