热轧滑动中性面的影响因素及有限元分析  

Influencing Factors and Finite Element Analysis of Sliding Neutral Surface in Hot Rolling

作　　者：杨哲懿 何士国[3] 孟凡志[3] 刘志伟 高磊 YANG Zheyi;HE Shiguo;MENG Fanzhi;LIU Zhiwei;GAO Lei(State Key Laboratory of Metal Material for Marine Equipment and Application,Anshan 114009,Liaoning,China;Ansteel Iron&Steel Research Institutes,Anshan 114009,Liaoning,China;Hot Strip Mill of Angang Steel Co.,Ltd.,Anshan114021,Liaoning,China)

机构地区：[1]海洋装备用金属材料及其应用国家重点实验室,辽宁鞍山114009 [2]鞍钢集团钢铁研究院,辽宁鞍山114009 [3]鞍钢股份有限公司热轧带钢厂,辽宁鞍山114021

出　　处：《鞍钢技术》2024年第6期91-97,共7页Angang Technology

摘　　要：应用有限元分析方法,建立精轧机组轧制模型,以普通碳素结构钢为研究对象,对热轧滑动中性面变化情况进行了仿真,分析了摩擦力、压下率、轧辊直径、张力因素对中性面的影响,着重分析了无张力轧制和热连轧中三种张力状态对中性面的影响。根据仿真计算可知,因带钢表面与心部的变形速度不一致,导致中性面并非一条直线。从不同的仿真计算条件可得到变形区内的变化情况,结合有限元仿真结果得出,在无张力状态下轧制摩擦力和压下率对中性面偏移的影响均较为明显,而轧辊直径对中性面的位置几乎没有影响。此外,带张力状态不同的张力设定条件下,轧制中性面的偏移方向不同。By using finite element analysis method,the rolling model of finishing mill was established.Taking ordinary carbon structural steel as the research object,the change of sliding neutral surface in hot rolling was simulated.The influence of friction,reduction rate,roll diameter and tension on neutral surface was analyzed,and the influence of three tension states in tension-free rolling and hot continuous rolling on neutral surface was emphatically analyzed.According to the simulation calculation,the neutral surface was not a straight line because of the inconsistent deformation speed between the surface and the center of the strip.The changes in the deformation zone could be obtained from different simulation conditions.Combined with the finite element simulation results,it was concluded that the rolling friction and reduction rate had obvious effects on the neutral surface shift without tension,while the roll diameter had little effect on the position of neutral surface.In addition,the deviation direction of rolling neutral surface was different under different tension setting conditions.

关 键 词：热轧 中性面 张力 有限元分析 

分 类 号：TG333[金属学及工艺—金属压力加工] TP3[自动化与计算机技术—计算机科学与技术]