锻压技术

汽车半轴热摆辗成形凹模温度场有限元分析

英文标题：Finite element analysis on temperature field of die for hot rotary rolling of auto semi-axle

作者：陈荷龚小涛

单位：西安航空职业技术学院

关键词：汽车半轴热摆辗凹模温度场磨损

分类号：TG335

出版年,卷(期):页码：2015,40(9):125-127

摘要：

基于有限元分析软件Deform-3D，建立了汽车半轴锻件热摆辗成形有限元模型及热传导过程模型，对热摆辗成形过程中凹模的温度场分布规律进行研究。分析了温度场分布对凹模磨损的影响规律，并结合汽车半轴锻件的热摆辗成形试验进行验证。研究结果表明：在汽车半轴锻件热摆辗成形过程中，在模具的凸、凹模法兰台阶过渡位置上，由于受到热传导和塑性剪切的相互作用，温度上升最快，最高温度达到599 ℃，造成模具表面硬度下降，从而引起法兰台阶过渡区域模具磨损量增大。

Based on the software Deform-3D, the FEA model and heat conduction model of hot rotary forging for auto semi-axle were built, and the influence of the temperature distribution on the die wear during the forming was studied. The FEA result was validated by the experimental result. The result shows that in the hot rotary forging of auto semi-axle forming process, the temperature rises quickly, and the peak temperature reaches 599 ℃ at the flange transition position of the die because of the interaction of the heat transformation with the plastic shear. Therefore, the surface hardness of the die declines to cause severe wear at the position of the flange transition position of the die.

基金项目：

陕西省教育厅科研计划项目(2013JK1021)

陈荷( 1973-)，女，硕士，副教授

参考文献：

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