极薄带轧制变形区轧辊压扁试验与有限元模拟

发布时间：2018-04-22 21:40

本文选题：极薄带轧制 + 弹性压扁　；参考：《钢铁》2017年01期

【摘要】：极薄带在轧制及平整过程中,工作辊的弹性压扁对轧制压力的分布有很大影响,传统的轧制力模型已经不再适用。为了在极薄带板形板厚控制过程中得到准确的轧制力,Fleck提出了新的轧辊压扁模型。针对Fleck模型进行试验研究,同时进行有限元模拟分析。试验过程中使用合金工具钢轧辊,轧制不同厚度的轧件,通过显微镜测量变形区各部位的厚度,得到变形区轧辊的近似轮廓形状。试验与有限元模拟结果表明,随着轧件厚度的减小,变形区出现了明显的中性区,但是很难出现Fleck模型中提到的弹性卸载区,因此计算极薄带轧制力时可以忽略中性区内的弹性卸载区以简化轧制力模型。
[Abstract]:The elastic flattening of the work roll has a great influence on the distribution of rolling pressure in the rolling and leveling process of the extremely thin strip, and the traditional rolling force model is no longer applicable. A new roll flattening model was proposed in order to obtain an accurate rolling force in the process of strip thickness control. The Fleck model is tested and analyzed by finite element method. In the process of testing, the alloy tool steel roll is used to roll different thickness of workpiece. The thickness of each part of the deformation zone is measured by microscope, and the approximate contour of the roll in the deformation zone is obtained. The results of experiment and finite element simulation show that with the decrease of workpiece thickness, the deformation zone has obvious neutral zone, but it is difficult to find the elastic unloading zone mentioned in the Fleck model. In order to simplify the rolling force model, the elastic unloading zone in the neutral region can be neglected when calculating the rolling force of the very thin strip.
【作者单位】：燕山大学国家冷轧板带装备及工艺工程技术研究中心;燕山大学机械工程学院;
【基金】：国家自然科学基金资助项目(51474190) 河北省自然科学基金资助项目(E2015203311)
【分类号】：TG331

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