The article presents the results of an experimental study into the distribution of contact stresses (pressures) along the length of a milling roll barrel and external longitudinal stresses measured by a magnetic anisotropy sensor (MAD) with an accuracy of ±1 MPa over a width of 250 mm of a steel (08kp) strip with a thickness of about 1 mm during cold rolling at the exit from a four-roller mill 205/360 × 500. A quantitative analysis shows the influence of longitudinal stresses in the outer parts of the steel strip on the metal pressure in the deformation zone. An equation is proposed for calculating the coefficient of the influence of unevenness and distribution of longitudinal stresses along the strip width at the exit from the mill on the pressure of the metal on the rolls. A computer-aided design (CAD) system was used to model and calculate the deformation and strength indicators of rolling thin strips, taking into account the influence of the characteristics of the rigid ends on the deformation zone. The graphs of the distribution of normal and tangential stresses along the length of the deformation zone are calculated depending on the longitudinal stresses. I. M. Pavlov’s theory about the significant influence of the external “hard” parts of the strip on the pressure of the metal on the rolls is empirically demonstrated. Based on the results of the experiments, an equation is proposed that takes into account the effect of the uneven longitudinal stresses in the outer parts and the stiffness of the strip on the pressure. The equation for determining the average metal pressure on the rolls is refined, taking into account the influence of the outer parts of the strip on the deformation zone during thin-sheet rolling.

中文翻译：

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薄板轧制中刚性端部理论的发展与应用

本文介绍了对沿轧辊筒长度方向的接触应力（压力）分布和由磁各向异性传感器 (MAD) 测量的外部纵向应力分布的实验研究结果，精度为 ±1 MPa，宽度为四辊轧机出口冷轧时250mm厚约1mm的钢（08kp）带钢205/360×500。定量分析显示钢外部纵向应力的影响变形区的金属压力。提出了用于计算轧机出口处沿带钢宽度的纵向应力分布的不均匀性和分布对轧辊上金属压力的影响系数的方程。采用计算机辅助设计（CAD）系统对轧制薄带材的变形和强度指标进行建模和计算，同时考虑了刚性端部特性对变形区的影响。根据纵向应力计算沿变形区长度的法向和切向应力分布图。IM Pavlov 关于带钢外部“硬”部分对轧辊上金属压力的显着影响的理论得到了经验证明。根据实验结果，提出了一个方程，该方程考虑了外部不均匀纵向应力和带钢刚度对压力的影响。确定轧辊上平均金属压力的方程得到改进，