四辊成品孔型在钢轨生产中的应用  

Applications of Four-roll Finished Pass in Rail Production

作　　者：王永明[1] 郭利宏[2] 吴迪[3] Wang Yong-ming;Guo Li-hong;Wu Di(Chief Engineer Office of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Rail and Beam Rolling Plant of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang 110819,Liaoning,China)

机构地区：[1]内蒙古包钢钢联股份有限公司总工室,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司轨梁厂,内蒙古包头014010 [3]东北大学连轧及自动化国家重点实验室,辽宁沈阳110819

出　　处：《包钢科技》2022年第1期6-10,49,共6页Science & Technology of Baotou Steel

摘　　要：文章针对钢轨万能轧制中存在的问题,从变形工艺的角度进行改进,增加成品孔型轧辊数量,形成四辊成品孔型,增加钢轨高度方向的约束,限制钢轨表面的自由展宽,实现轨高尺寸精度的提高。使用ANSYS/LS-dyna进行了数值计算,分析了不同情况下的变形状况,对出现的缺陷进行了修正,得到了最优的解决方案。通过在钢轨生产线上应用,取得了较好的效果,降低了钢轨全长范围内高度尺寸的波动范围,解决了局部高度波动造成的“高点”缺陷,提高了高铁运行的安全性。In this paper,the improvement is from the point of view of deformation process by increasing the number of roll in finished pass to form four-roll finished pass,increasing the constraint in direction of depth of rail and limiting free spread of rail surface so as to improve dimensional accuracy of depth of rail aiming at the existing problems in universal rolling of rail.The numerical calculation is performed using ANSYS/LS-dyna,deformation states in different conditions are analyzed,defects are amended so that the optimal solution is obtained.The better effects are obtained by applying it in production line of rail,fluctuation range of depth within the full length range of rail is reduced and defect of“high zone”caused by local depth fluctuation is solved so that the safety of running for high-speed train is improved.

关 键 词：钢轨 四辊成品孔型 轧制 LS-DYNA 仿真计算 

分 类 号：TG332[金属学及工艺—金属压力加工]