锻压技术

拉矫机弯曲单元工作辊力学分析及长寿命研究

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

作者：任学平1 马龙1 2

分类号：TG333.17

出版年,卷(期):页码：2022,47(5):186-192

摘要：

拉矫机是连续热镀锌生产中重要的镀后处理设备，但其频繁出现的掉辊现象造成镀锌板板面划伤和断带停线事故，严重影响了其功能的发挥和生产线的稳定运行。在了解其结构组成的基础上，通过力学分析，发现掉辊现象是工作辊辊端支撑轴承在轴向力的作用下失效磨损所致。利用逆推法求得了轴向力，并结合Workbench摩擦生热分析，采用推力轴承的合理选用、辊系装配质量的提高、拉矫工艺参数的优化、伸长率和温度反馈信号的获取等多种针对性办法，不但解决了拉矫机弯曲单元的频繁更换的问题，而且阻止了掉辊现象的发生，保证了生产线的连续稳定运行，达到了降本增效的目的。

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.

基金项目：

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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