大规格H型钢粗轧阶段轧制力模型研究  

Study on rolling force model for large-size H-beam steel during rough rolling stage

作　　者：李媛 王涛[1,2] Li Yuan;Wang Tao(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Ministry of Education,Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment,Taiyuan 030024,China)

机构地区：[1]太原理工大学机械与运载工程学院,山西太原030024 [2]先进金属复合材料成型技术与装备教育部工程研究中心,山西太原030024

出　　处：《锻压技术》2023年第10期139-144,共6页Forging & Stamping Technology

基　　金：国家重点研发计划资助项目(2021YFB3401000)。

摘　　要：为了得到一个较为精确的轧制力,提取国内现有的900 mm×300 mm、700 mm×300 mm、500 mm×300 mm、600 mm×200 mm、500 mm×200 mm 5种大规H型钢生产线的轧制规程和孔型等参数,采用有限元分析软件Deform对二辊孔型轧制过程进行模拟,得到轧制力有限元仿真结果。再采用专用的电力测试仪器,测试该5种规格H型钢的实际轧制力。将仿真结果与实测数据进行对比,验证了模型的准确性。建立H型钢三维弹塑性热力耦合有限元模型,分析H型钢轧制稳定阶段的变形与应力分布情况,在艾克隆德法的基础上,使用平均压下量代替腹板压下量,对大规格H型钢二辊孔型轧制阶段的轧制力模型进行修正,并使用修正后的轧制力模型对几个典型道次的轧制力进行了计算,与修正前的模型对比,轧制力误差由40%减小至17%以内。In order to obtain a more accurate rolling force,the parameters of rolling schedule and hole shape of the existing 900 mm×300 mm,700 mm×300 mm,500 mm×300 mm,600 mm×200 mm,500 mm×200 mm domestic large-size H-beam steel production line were extracted,and the rolling process in the two-roller groove rolling process was simulated by finite element analysis software Deform to obtain the finite element simulation results of rolling force.Then,the actual rolling forces of the five specifications of H-beam steel were measured by the special electric testing instrument,the simulation results were compared with the measured data to verify the accuracy of the model.Furthermore,a three-dimensional elastoplastic thermodynamic coupling finite element model of H-beam steel was established,and the deformation and stress distribution of H-beam steel in the stable rolling stage were analyzed.Based on S.Ekelond method,the average reduction was used instead of the web reduction to modify the rolling force model of the two-roller groove rolling stage of large-size H-beam steel,and the modified rolling force model was used to calculate the rolling force of several typical passes.Compared with the model before the correction,the rolling force error was reduced from 40%to less than 17%.

关 键 词：轧制力 H型钢 轧制变形 二辊孔型轧制 艾克隆德模型 

分 类 号：TG302[金属学及工艺—金属压力加工]