汽车前轴第1道次辊锻成形工艺有限元模拟与实验

发布时间：2018-08-17 18:40

【摘要】：建立了前轴辊锻第1道次模型,并利用Deform-3D软件进行模拟仿真,通过与实际辊锻成形前轴进行对比,确定了合理的边界条件,并对其准确性进行了验证。由分析可知,摩擦因子为0.6、传热系数为11时,模拟结果与实验结果对比误差最小。研究了传热系数、摩擦因子、初始温度、辊锻角速度、模具板簧处圆角等工艺参数对辊锻第1道次成形的影响规律。结果表明,摩擦因子增大和初始温度升高,锻件弹簧板中心距和最大展宽均随之增大。转动角速度增大,弹簧板中心距、最大展宽逐渐减小。锻件总长和最大展宽随着模具板簧处圆角增大而减小。通过第1道次辊锻制坯工艺优化,降低了终锻成形载荷,提高了终锻模具型腔填充程度与材料利用率。
[Abstract]:The first pass model of roll forging of front axle was established and simulated by Deform-3D software. The reasonable boundary conditions were determined and the accuracy was verified by comparing the model with the actual roll forging. According to the analysis, the friction factor is 0.6 and the heat transfer coefficient is 11:00, and the comparison error between the simulation results and the experimental results is the least. The influence of heat transfer coefficient, friction factor, initial temperature, angular velocity of roll forging and circle angle of die plate spring on the first pass forming of roll forging were studied. The results show that the center distance and maximum width of spring plate increase with the increase of friction factor and initial temperature. With the increase of rotational angular velocity, the center distance and the maximum width of the spring plate gradually decrease. The total length and maximum width of forgings decrease with the increase of the fillet at the die leaf spring. Through the process optimization of the first pass roll forging billet, the forming load of final forging is reduced, and the filling degree of die cavity and material utilization ratio are improved.
【作者单位】：武汉理工大学现代汽车零部件技术湖北省重点实验室;武汉理工大学汽车零部件技术湖北省协同创新中心;
【基金】：教育部创新团队发展计划项目(IRT13087)
【分类号】：U466;TG316

【参考文献】