锻压技术

支承辊倒角对板形控制的研究

英文标题：Flatness control analysis of chamfer on backup rolls

作者：朱贤斌袁朝龙蔡万华

分类号：TG335

出版年,卷(期):页码：2014,39(3):127-0

摘要：

支承辊倒角是板带轧制过程中常用于板形控制的一种方法，目前关于这方面研究的报道很少。通过简支梁模型以及有限元模型分析研究了宽度为400 mm 的铜带轧制生产中支承辊倒角对轧制板带板形控制的影响。简支梁模型分析显示，若倒角后支承辊辊面长度大于板带宽度，则其长度越小，对板形控制越有利；有限元模型结果显示，倒角后支承辊辊面长度小于 460 mm 时，轧板肋部将产生应力集中，易出现肋浪缺陷。因此，倒角后支承辊辊面长度的设定应综合考虑支承辊倒角对板形控制的有利作用及倒角后支承辊辊面长度过小时造成轧板肋部出现应力集中的问题，取最优值。

In the strip rolling process, chamfer on backup rolls is often used for flatness control, while researches in this area are rarely reported. The effects of the chamfer of backup rolls on flatness of rolled strip control in the rolling of copper strip with 400 mm width were investigated via simple beam model and FEM model. The analysis result of simple beam model shows that the shorter the surface length of backup rolls after chamfer is, the better it is for the flatness control. The result of FEM model analysis shows that when the surface length of backup rolls after chamfer is less than 460 mm, the stress concentration will arise at the ribs of rolling plate, which easily leads to rib waves defect. So the advantage of chamfer on backup rolls on strip control and the stress concentration occurred at rolling rib owing to the undersized surface length of backup rolls after chamfer must be considered together when surface length of backup rolls after chamfer being set to seek the optimum value.

基金项目：

国家自然科学基金资助项目(50705048)

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