Journal of Korea Foundry Society (한국주조공학회지)

Korea Foundry Society (한국주조공학회)
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A Study for the Effects of Boron Addition on Machinability and Wear Resistance of Ductile Cast Iron

구상흑연주철의 피절삭성과 내마모성에 미치는 Boron 첨가의 효과에 관한 연구

  • Choi, Yang-Jin (Dept. of Metallurgical Eng., Daejeon National University of Technology) ;
  • Lee, Byung-Yehp (Dept. of Metallurgical Eng., Daejeon National University of Technology) ;
  • Kwon, Hyuk-Mu (Dept. of Metallurgical Eng., Chungnam National University) ;
  • Baek, Sang-Han (Dept. of Metallurgical Eng., & Materials Sci., Hong-Ik University) ;
  • Park, Yong-Jin (Dept. of Metallurgical Eng., & Materials Sci., Hong-Ik University)
  • 최양진 (대전산업대학교 금속공학과) ;
  • 이병엽 (대전산업대학교 금속공학과) ;
  • 권혁무 (충남대학교 금속공학과) ;
  • 백상한 (홍익대학교 금속 재료공학과) ;
  • 박용진 (홍익대학교 금속 재료공학과)
  • Published : 1994.02.28
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Abstract

It is very important to obtain high performance ductile iron by addition a small amount of alloying elements. In this study, to improve the characteristics of small piston ring casted from ductile iron melt a small amount of boron($0{\sim}0.008wt.%$) that is powerful carbide stabilizer was added in ductile iron, and inspected it`s effects on the microstructure, wear resistance, machinability and mechanical properties. The results obtained from this study are as follows. 1. As the amount of boron increased to 0.04wt.%, the machinability of ductile iron is increased, and if the amount is in excess of 0.04wt.% the machinability is decreased conversely. 2. The wear resistance of ductile iron is improved by boron addition. 3. The recommended ladle addition of boron amount ranges from 0.04wt.% to 0.06wt.% for the use of small piston ring.

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