为了实现IF钢铁素体区热轧 ,通过对宝钢 2 0 5 0mm热连轧机轧制力预测模型的分析 ,并结合实验结果 ,对精轧轧制力模型进行了改进。改进后的模型对温度影响采用了分段处理的方法 ,并引进了静态软化影响参数 ,使铁素体区轧制力预测精度显著提高。 In order to realize hot rolling in the IF steel ferrite zone, the rolling force model of the hot rolling mill of Baosteel was analyzed through the analysis of the rolling force and the experimental results were taken to improve the rolling force model. The improved model has adopted the method of sub-treatment to the temperature, and introduced the parameters of static softening, so that the prediction accuracy of the rolling force in ferrite region is significantly improved.