梯度硬度滚刀刀圈的感应回火数值模拟  

Numerical simulation on induction tempering of cutter ring with gradient hardness

作　　者：孙伟 Sun Wei(China Railway 14th Bureau Group Co.,Ltd.,Jinan Shandong 250014,China)

机构地区：[1]中铁十四局集团有限公司,山东济南250014

出　　处：《金属热处理》2024年第12期254-261,共8页Heat Treatment of Metals

摘　　要：基于有限元软件建立了滚刀刀圈的电-磁-热多物理场耦合模型,对梯度硬度滚刀进行感应回火模拟。结果表明,滚刀刀圈感应回火过程中,感应电流密度和磁感应强度沿刀圈径向整体呈逐渐降低趋势,最大值出现在距离线圈最近的刀圈心部,自心部向刃部方向,刀圈温度呈逐渐递减的趋势。随线圈电流增大,刀圈的感应电流密度、磁感应强度、心部温度和刃部温度随之增大。随线圈电流频率增加,刀圈的感应电流密度、心部温度和刃部温度随之增大,但刀圈的磁感应强度下降。试验和仿真计算所得刀圈径向温度最大相对误差为8.1%,验证了模拟的准确性。A coupled electric-magnetic-thermal multi-physical field model for cutter ring was established based on finite element software,and induction tempering simulation was performed on cutter ring with gradient hardness.The results show that during the induction tempering process of the cutter ring,the induced current density and magnetic induction intensity gradually decrease along the radial direction of the ring,with the maximum value occurring at the center of the ring closest to the coil.From the center to the edge direction,the temperature of the ring gradually decreases.As the coil current increases,the induced current density,magnetic induction intensity,core temperature and edge temperature of the ring also increase.As the frequency of the coil current increases,the induced current density,core temperature and edge temperature of the ring also increase,but the magnetic induction intensity decreases.The maximum relative error of the radial temperature of the cutter ring obtained from the experiment and simulation is 8.1%,which verifies the accuracy of the simulation.

关 键 词：滚刀刀圈 感应回火 数值模拟 温度分布 

分 类 号：TG156.9[金属学及工艺—热处理]