基于有限元软件的锻造工艺参数对牵引拉杆成形的影响分析  

Influence of Forging Process Parameters on Forming of Traction Rod Based on Finite Element Software

作　　者：孙世仁 刘虹[1] 陈文琳[2] 周永锋 SUN Shiren;LIU Hong;CHEN Wenlin;ZHOU Yongfeng(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China;School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,China;Anhui Jinzhengda Precision Forging Technology Co,Ltd.,Chuzhou 239500,China)

机构地区：[1]合肥工业大学机械工程学院,安徽合肥230009 [2]合肥工业大学材料科学与工程学院,安徽合肥230009 [3]安徽金正达精锻科技有限公司,安徽滁州239500

出　　处：《热加工工艺》2020年第15期68-72,共5页Hot Working Technology

摘　　要：运用有限元软件对高铁转向架牵引拉杆锻造过程进行了模拟,研究了不同坯料加热温度、模具预热温度、上模运动速度及摩擦系数对牵引拉杆锻造成形的载荷、等效应力及金属流动特性的影响。结果表明:牵引拉杆最大成形载荷、最大等效应力和最小等效应力均随着坯料加热温度的增加而减小。模具预热温度越高,最大成形载荷越小。随着上模运动速度增加,牵引拉杆最大等效应力、最小等效应力和金属最大流动速度逐渐增加。牵引拉杆最大成形载荷、最大和最小等效应力随着摩擦系数增加而增加。结合模拟结果优化了工艺参数,并进行了试验验证,模拟结果与试验结果基本吻合。The forging process of the bogie traction rod for high speed train was simulated by using finite element software.The effects of heating temperature of blanks,preheating temperature of die,moving speed of upper die and friction coefficient on forging load,equivalent stress and metal flow characteristics of the traction rod were studied.The results show that the maximum forming load,the maximum and the minimum equivalent stress of the traction rod decrease with the increase of the heating temperature of the billet.The higher the preheating temperature is,the smaller the maximum forming load is.The maximum equivalent stress,the minimum equivalent stress and the maximum flow velocity of the metal gradually increase with the increase of the moving velocity of the upper die.The maximum forming load,maximum and minimum equivalent stress increase with the increase of friction coefficient.The process parameters were optimized combined with simulation results,and the experimental results were verified.The simulation results are in good agreement with the experimental results.

关 键 词：转向架牵引拉杆 工艺参数 数值模拟 

分 类 号：TG316[金属学及工艺—金属压力加工]