两种万能成品孔轧制60kg/m重轨有限元模拟及分析  

Simulation of finite element method and analysis on rolling 60kg/m heavy rail with two kinds of universal finish pass

作　　者：周剑华[1] 吴迪[1] 赵宪明[1] 王艳敏[1] 

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,沈阳110004

出　　处：《塑性工程学报》2007年第6期28-31,共4页Journal of Plasticity Engineering

基　　金：国家"十五"科研攻关计划重点基金资助项目(2004BA317B-4-1)

摘　　要：为提高60kg/m重轨轨头踏面的形状精度和轨高尺寸精度,在半万能轧制法的基础上,提出了全万能成品孔轧制法。用ANSYS/LS-DYNA软件对两种万能成品孔型轧制60kg/m重轨的变形过程进行了有限元模拟。重轨经全万能成品孔轧制时,在X方向的金属流动趋势和等效应力、等效应变的分布更有利于保证轨头踏面的形状精度,并且轧后重轨轨高的波动幅度比半万能轧制时小。从理论上证明了全万能轧制法轧制60kg/m重轨的可行性,为高精度重轨的轧制提供了理论依据。In order to improve the shape precision on the tread and the size precision of rail height of 60kg/m heavy rail, the method of rolling heavy rail with the full-universal finish pass was advanced based on the half-universal rolling method. The rolling processes of heavy rail with two kinds of universal finish pass were simulated by FEM using the ANSYS/LS-DYNA software. With full-universal finish pass, the tendency of metal flowing along the X direction, and the distribution of the equivalent stress and equivalent strain was propitious to ensure the shape precision on the tread, and the fluctuation range of the rail height was smaller than that with half-universal finish pass. It was proved that the 60kg/m heavy rail could be feasibly produced with the full-universal finish pass, which provided the theoretic basis for rolling the high precision heavy rail.

关 键 词：重轨 万能轧制 成品孔型 模拟 

分 类 号：TG335.4+3[金属学及工艺—金属压力加工]