论文部分内容阅读
力能参数是有效控制多楔轧制高铁空心车轴的成形质量和设备设计的关键参数。为了研究模具工艺参数对多楔轧制高铁空心车轴力能参数的影响规律,采用DEFORM有限元软件,建立了楔横轧多楔同步轧制高铁空心车轴的三维刚塑性有限元模型;对轧制力和轧制力矩进行了理论计算;分析了展宽角、成形角、模具脱空等模具工艺参数对空心车轴力能参数的影响规律。结果表明:展宽角增大使力能参数增大;成形角增大也使力能参数增大;模具脱空能够显著改善轧件的受力状况。进行了1∶5多楔轧制空心车轴实验,实验轧制力矩与数值模拟结果相对误差均在10%以内,验证了有限元模型的正确性。
The energy parameter is the key parameter to effectively control the forming quality and equipment design of multi-wedge hollow shaft. In order to study the influence of mold parameters on the energy parameters of multi-wedge high-speed hollow shaft, the three-dimensional rigid-plastic finite element model of the high-speed hollow shaft of the high-speed rail with cross wedge rolling and multi-wedge was established by DEFORM finite element software. Force and rolling torque were calculated theoretically. The influence of die parameters such as broadening angle, forming angle and mold voidage on the parameters of hollow axle was analyzed. The results show that the increase of broadening angle can increase the parameters of force, the increase of forming angle also increases the parameters of force and energy, and the die clearance can significantly improve the stress condition of the rolling stock. A 1: 5 multi-wedge hollow shaft test was carried out. The relative error between the experimental rolling torque and the numerical simulation results was less than 10%, which verified the correctness of the finite element model.