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为了研究温度对轧辊孔型变化的影响,利用有限元Ansys软件,对万能轧机轧辊的温度场进行了模拟分析,得到了稳定状态下轧辊温度场分布规律,并研究了不同轧制条件下轧辊温度场的变化情况。研究表明,轧辊温度场呈周期性变化,与速度相比冷却液的流量对工作辊温度场分布影响较明显,将轧辊模拟数据与现场实测数据进行对比其误差不超过5℃,证明了模型的可靠性。由于轧辊的变形导致轧辊孔型发生相应变化,轧辊的温度和应力变化为从中心到边部逐渐减小,轧辊内部的热膨胀、应力场、外部轧制力以及摩擦使得水平辊在圆角处的轴向和径向均发生了较大位移。
In order to study the effect of temperature on the roll pass change, the temperature field of the universal roll was simulated by the finite element Ansys software. The roll temperature distribution under steady state was obtained. The roll temperature Field changes. The results show that the temperature field of the roll changes periodically, and the cooling fluid flow rate has a more significant effect on the temperature field distribution of the work roll than the velocity. The error between the simulation data of the roll and the measured data in the field does not exceed 5 ℃. reliability. Due to the deformation of the roll leads to a corresponding change in the roll pass, roll temperature and stress changes from the center to the edge of the gradual decrease in the roll internal thermal expansion, stress field, the external rolling force and the friction so that the horizontal roll at the fillet Large axial and radial displacement occurred.