Journal of the Korean Society of Industry Convergence (한국산업융합학회 논문집)

The Korean Society of Industry Convergence (한국산업융합학회)
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Effect of Carbon on the Micro Structure and Hardness of Internally Hardened Ductile Cast Iron Roll

내부 경화형 구상흑연주철 롤 동체와 넥의 미세조직과 경도에 미치는 탄소 영향

  • Sang-Mook Lee (Dept. of Materials Science and Engineering, Pukyong National University) ;
  • Ki-Hang Shin (Dept. of Materials Science and Engineering, Pukyong National University) ;
  • Byung-Chul Choi (Dept. of Energy and Chemical Process, Petro Chemical Training Center of Korea Polytechnics) ;
  • Ki-Woo Nam (Dept. of Materials Science and Engineering & Marine Design Convergence Engineering, Pukyong National University)
  • 이상묵 (부경대학교 재료공) ;
  • 신기항 (부경대학교 재료공) ;
  • 최병철 (한국폴리텍대학 석유화학공정기술교육원 석유화학공정과) ;
  • 남기우 (부경대학교 재료공학과 및 마린융합디자인공학과)
  • Received : 2022.12.19
  • Accepted : 2023.01.20
  • Published : 2023.02.28
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Abstract

This study was investigated the effect of carbon on the micro-structure and hardness of ductile cast iron roll with internal curing capacity. Spheroidal graphite existed at roll body with rapid cooling, but granular graphite existed at roll neck with slow cooling. The volume fraction of graphite increased at roll body with rapid cooling, That of roll neck with slow cooling decreased, but graphite size increased. The volume fraction of cementite decreased, but volume fraction increased. The cementite size was larger at roll neck than roll body. The hardness was decreased at roll body and roll neck due to volume fraction of cementite. The hardness of roll body was higher than roll neck.

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References

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