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유한요소법을 이용한 수직형 롤러 분쇄기용 테이블 라이너의 내구 해석에 관한 연구
최형모,이경영,조석수,이선봉 三陟大學校 産業科學技術硏究所 2002 産業科學技術硏究論文集 Vol.7 No.1
Vertical roller mill, which perform the grinding and parting blending of raw material, is the one of the important machine to produce ordinary portland cement. The table liner belonged to the vertical roller is mill the one of the main parts influencing its grinding efficiency. The life of table liner is estimatede to 4×107cycles in the design stage, but at the field, when its operating time reaches to 4×106 ~ 8×106 cycles, the fracture of table liner being to be found. The fracture of table liner commences from the outside edge of grinding path contacting with the grinding roller. Its maintenance normally take 30% of the total maintenance costs of the roller mill. Therefore, this study shows the clarification of the reasons occuring the fatal destruction of the table liner by fatigue fracture analysis utilizing fracture mechanics and by FEM using ANSYS 5.6.