Transactions of Materials and Heat Treatment

Title：Mechanical analysis and research on long life of work roll in bending unit for tension leveler

Authors： Ren Xueping1 Ma Long1 2

Unit： 1.College of Mechanical Engineering Inner Mongolia University of Science and Technology 2.Compact Strip Production Plan Baotou

KeyWords： tension leveller bending unit work roll roll end support bearing wear frictional heat generation longevity measures

ClassificationCode：TG333.17

year,vol(issue):pagenumber：2022,47(6):186-192

Abstract：

The tension leveler is an important post-plating treatment equipment in continuous hot-dip galvanizing production, but its frequent roll-off phenomenon causes scratch of galvanized sheet surface and accidents of broken belt and line stop, which seriously affects the performance of its function and the stable operation of production line. Therefore, on the basis of understanding its structural composition, through mechanical analysis, it was found that the work roll end support bearing failed and worn under the action of axial force which caused the roll-off phenomenon, and the axial force was obtained by the inverse method. Then, combined with the frictional heat generation analysis of Workbench, the appropriate selection of thrust bearings, the improvement of roll assembly quality, the optimization of tension leveling process parameters, the acquisition of elongation and temperature feedback signals and so on were adopted. A variety of targeted methods not only solved the frequent replacement problem of the bending unit for tension leveler, but also prevented the occurrence of roll-off phenomenon, ensured the continuous and stable operation of production line, and achieved the purpose of reducing costs and increasing efficiency.

Funds：

内蒙古自治区自然科学基金资助项目（2019LH05008）

任学平（1963-），男，博士，教授 E-mail：rxp@imust.cn 通信作者：马龙（1985-），男，硕士，机械工程师，镀锌工技师 E-mail：15947025479@163.com

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