通过对周期式冷轧管机轧制过程中芯棒轴向力的测试与分析,认为芯棒轴向力与道次变形量在宏观变形区上的分配有关,其分布特点受轧制压力在宏观变形区上的分布和钢管不均匀变形程度的影响,其值是由瞬时作用力和累积作用力两项组成:Q_(px)=F_(px)+f_(x(q))。 Through the test and analysis of the axial force of the mandrel during the rolling process, it is considered that the axial force of the mandrel is related to the distribution of the deformation of the mandrel on the macroscopic deformation zone. The distribution characteristics are affected by the rolling pressure The distribution of the macro-deformation zone and the degree of uneven deformation of the steel pipe, the value is composed of instantaneous force and cumulative force of two components: Q_ (px) = F_ (px) + f_ (x (q)).