轧制接触面摩擦因数计算模型的优化

Optimization of Calculation Model for Friction Coefficient of Rolling Contact Surface

在无缝钢管轧制过程中,需要精确计算轧制接触界面的摩擦因数。考虑到现有摩擦因数计算模型的不足,为提高轧制接触界面摩擦因数的预测精度,建立了一种反映实际轧制工况的非线性摩擦因数模型;利用非线性优法方法和实测数据优化模型参数。结果表明:该模型的计算值与实际测量值吻合良好,满足企业生产的实际需要。

During the rolling process of seamless steel tubes, the friction coefficient of the rolling contact interface needs to be calculated accurately. Considering the shortcomings of the existing friction coefficient calculation model, in order to improve the prediction accuracy of the friction coefficient of the rolling contact interface, a nonlinear friction coefficient model capable of indicating actual rolling conditions is established. Furthermore, the parameters of the said model are optimized by means of the nonlinear optimization method and related site-measured process data as well. The result shows that the model-calculated values are in full agreement with the actually measured values, having been capable of meeting the practical needs for the production of the company.