A Study on the Safety Estimation of Table Liner for Vertical Roller Mill Using HDM

구멍뚫기법을 이용한 수직형 롤러 분쇄기용 테이블 라이너의 안전성 평가에 관한 연구

  • 이동우 (동아대학교 대학원 기계공학과) ;
  • 홍순혁 (동아대학교 대학원 기계공학과) ;
  • 조석수 (삼척대학교 기계 정밀기계 자동차공학부) ;
  • 주원식 (동아대학교 기계공학과)
  • Published : 2004.08.01


The vertical roller mill is the important machine grinding and mixing various crude materials in the manufacturing process of portland cement. Table liner is one of grinding elements of vertical roller mill and is subjected to the cyclic bending stress by rollers load and the centrifugal force by rotation of table. It demands $4{\times}10^7$ cycle but has $4{\times}10^6{\sim}8{\times}10^6$ cycle. It fractures at the edge of grinding path of outside roller. The repair expense for it amounts to $30\%$ of total maintenance of vertical roller mill. Therefore, this study shows the fracture mechanism of table liner for vertical roller mill using HDM and fatigue analysis and makes the estimation for safety of vertical roller mill.


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