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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AGS Distribution of Round-oval and Square-Diamond Rolling of SCM435 Steel

SCM435 강의 라운드-오발 및 스퀘어-다이아몬드 압연 공정에서의 AGS 분포

  • Lee H. W. (Mechanical Engineering Department, KAIST, Rolling Technology and Process Control Research Group) ;
  • Kwon H. C. (POSCO Technical research Laboratories) ;
  • Zahiri S. H. (School of Engineering and Technology, Deakin University, Australia) ;
  • Hodgson P. D. (School of Engineering and Technology, Deakin University, Australia) ;
  • Im Y. T. (Mechanical Engineering Department, KAIST, Rolling Technology and Process Control Research Group)
  • 이호원 (기계공학과, 한국과학기술원) ;
  • ;
  • ;
  • ;
  • 임용택 (기계공학과, 한국과학기술원)
  • Published : 2004.08.01
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Abstract

This study investigated tile local austenite grain size (AGS) distribution In rolling of SCM435 steel which is commonly used for high strength bolt. To investigate AGS distribution, round-oval (R-O) and square-diamond (S-D) rolling experiments were carried out with pilot mill. In round-oval rolling, local AGS has a tendency to increase when it goes to outward. In square-diamond rolling, local AGS has a tendency to increase when it goes to free surface. To investigate relation between AGS and process parameter, three dimensional FE analysis was carried out along with rolling experiment. To validate accuracy of FE analysis, we compared deformed geometry with FE result. The AGS prediction combined AGS model with numerical analysis was also carried out for center node of S-D rolling. Although this study brought experimental observation and its qualitative analysis into focus and quantitative AGS prediction will be done as a further work.

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