5 000 mm单机架宽厚板轧机力臂系数模型

轧制力矩是中厚板轧制过程中最重要的工艺参数之一,力臂系数模型精度直接影响轧制力矩的计算精度.推导了力臂系数反算模型,基于现场轧制数据获得实际力臂系数.研究了轧制变形区几何条件对力臂系数的影响规律,确定变形区形状系数和压下率作为力臂系数的关键影响参数.通过实际数据回归分析,获得最佳的模型形式和模型系数.针对某5 000 ...

Lever arm coefficient model of 5 000 mm single-stand heavy plate mill

Rolling torque is one of the most important process parameters in the plate rolling process. The accuracy of the lever arm coefficient model directly affects the calculation accuracy of rolling torque. The reverse calculation model of the lever arm coefficient is derived,and the lever arm coefficient is obtained based on the actual rolling data. The influence of geometric conditions of the rolling deformation zone on the lever arm coefficient was studied. The deformation zone geometric coefficient and reduction ratio were determined as the critical parameters of the lever arm coefficient. Through the regression analysis of the actual data,the best model form and the model parameters are obtained. The empirical model,the now used model,and the improved model of lever arm coefficient are used to calculate the rolling torque for one 5 000 mm heavy plate mill,and the accuracies of the models are compared with the actual data. The maximum error of the rolling torque calculated with the improved lever arm coefficient model is less than 10%, and the average error is within 5%. The calculation accuracy is much higher than other models.