热轧相变过程变形抗力模型研究与开发

发布时间：2019-05-29 12:39

【摘要】：对精轧阶段存在相变的热轧钢种,因变形抗力随轧制温度的变化规律与常规的奥氏体轧制钢种显著不同,使得传统变形抗力模型的预报误差较大,严重影响这类钢种的轧制稳定性。为此,研发了一种热轧相变过程变形抗力模型,通过在原变形抗力模型基础上添加一个新的相变趋势项,该修正项为轧制温度的二次多项式函数,并根据钢种分类来精细优化适应不同钢种轧制的多项式待定参数。该模型目前已成功应用于涟钢CSP热连轧生产线变形抗力在线计算,实际生产应用表明,新模型上线后,变形抗力与轧制力的预报精度显著提高,轧制力模型预报误差12%以内的比例从83.3%提高到96.7%,满足了热连轧精轧相变带钢的稳定生产要求。
[Abstract]:For hot rolled steel with phase transformation in finishing rolling stage, the prediction error of traditional deformation resistance model is large because the variation of deformation resistance with rolling temperature is significantly different from that of conventional Austenite rolling steel. The rolling stability of this kind of steel is seriously affected. For this reason, a deformation resistance model for hot rolling phase transformation process is developed. A new phase transition trend term is added to the original deformation resistance model, which is the quadratic multivariate function of rolling temperature. According to the classification of steel grades, the multinomial undetermined parameters suitable for different steel rolling are optimized. At present, the model has been successfully applied to the on-line calculation of deformation resistance in CSP hot strip production line of Lianyuan Iron and Steel Co., Ltd. The practical production application shows that the prediction accuracy of deformation resistance and rolling force is significantly improved after the new model is put on line. The proportion of prediction error within 12% of rolling force model is increased from 83. 3% to 96. 7%, which meets the stable production requirements of phase change strip in hot strip rolling.
【作者单位】：武汉科技大学信息科学与工程学院;武汉科技大学冶金工业过程系统科学湖北省重点实验室;湖南华菱涟钢薄板有限公司技术中心;
【基金】：湖北省教育厅科学技术研究计划重点资助项目(D20161103) 武汉市青年科技晨光计划资助项目(2016070204010099) 武汉科技大学冶金工业过程系统科学湖北省重点实验室开放基金资助项目(Z201501)
【分类号】：TG335.11

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