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http://dx.doi.org/10.3795/KSME-A.2004.28.8.1221

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

Lee Dong Woo (동아대학교 대학원 기계공학과)
Hong Soon Hyeok (동아대학교 대학원 기계공학과)
Cho Seok Swoo (삼척대학교 기계 정밀기계 자동차공학부)
Joo Won Sik (동아대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.8, 2004 , pp. 1221-1228 More about this Journal
Abstract
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.
Keywords
Fatigue Fracture; Goodman Diagram; Hole-drilling method; Stress Intensity Factor; Plastic Zone Depth; Table Liner; Vertical Roller Mill;
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