5000mm单机架宽厚板轧机力臂系数模型  

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

作　　者：矫志杰[1] 蔡沅良 王龙鑫 王志强 孙旭东 JIAO Zhi-jie;CAI Yuan-liang;WANG Long-xin;WANG Zhi-qiang;SUN Xu-dong(The State Key Laboratory of Rolling Automation,Northeastern University,Shenyang 110819,Liaoning,China;The Heavy Plate Plant,NISCO,Nanjing 210035,Jiangsu,China)

机构地区：[1]东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819 [2]南京钢铁股份有限公司宽厚板厂,江苏南京210035

出　　处：《钢铁》2021年第7期101-106,共6页Iron and Steel

基　　金：中央高校基本科研业务费专项资金资助项目(N160704003,N170708020)。

摘　　要：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 000mm宽厚板轧机,分别采用经验力臂系数、现场原力臂系数模型以及改进后力臂系数模型进行轧制力矩计算,并与实际数据对比分析模型精度,采用改进力臂系数模型计算的轧制力矩的最大误差不超过10%,平均误差在5%以内,计算精度远高于其他模型。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.

关 键 词：宽厚板轧机 力臂系数 力矩 数学模型 轧制 

分 类 号：TG335.5[金属学及工艺—金属压力加工]