Zhao Qilin, Hu Xianlei, Liu Xianghua
School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China.
State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China.
Materials (Basel). 2024 May 20;17(10):2467. doi: 10.3390/ma17102467.
In normal cold rolling, the elastic deformation of the strip is typically ignored because of the dominant plastic deformation. However, this neglect may introduce additional errors when the strip is very thin. The aim of this study is to investigate the characteristics of the deformation region and thickness reduction in the asymmetrical rolling of ultra-thin strips. Mathematical models were developed based on the slab method, with consideration of the elastic deformation of the strips, and employed in the simulation calculation. The percentage of the three zones and the thickness reduction were analyzed using the simulation results. An increase in the speed ratio results in an increase in the reduction ratio, which is influenced by parameters, such as front tension, back tension, friction coefficient, and entry thickness. The elastic deformation of the strip reduces the tension and the roll pressure and causes the reduction ratio to decrease. The findings and conclusions of this study may be helpful to the mill operating in the asymmetrical rolling process of ultra-thin strips.
在常规冷轧中，由于塑性变形占主导，带材的弹性变形通常被忽略。然而，当带材非常薄时，这种忽略可能会引入额外的误差。本研究的目的是研究超薄带材不对称轧制时变形区和压下量的特征。基于 slabs 方法建立了考虑带材弹性变形的数学模型，并将其用于模拟计算。利用模拟结果分析了三个区域的百分比和压下量。速比的增加会导致压下率增加，这受到前张力、后张力、摩擦系数和入口厚度等参数的影响。带材的弹性变形会降低张力和轧制压力，并导致压下率降低。本研究的结果和结论可能有助于在超薄带材不对称轧制过程中运行的轧机。
