如今文献中,认为轧制过程纵向秒体积相等,是个常量。但我们认为,一般情况,轧制过程纵向秒体积不等。本文讨论了轧制过程纵向秒体积不等的原因,并用试验结果证明其不等。导出了计算秒体积的差值及比值公式:及 In the literature, it is considered that the longitudinal seconds of the rolling process are equal in volume and constant. However, in our opinion, in the general case, the longitudinal seconds vary in the rolling process. This article discusses the reasons for the unequal vertical seconds in the rolling process and proves that they vary with test results. Derived the difference between the calculation of the second volume and the ratio formula: and