半轴套管热挤压成形数值模拟与实验

根据半轴套管零件的特点,确定了热挤压成形工艺方案,采用DEFORM-3D有限元软件对成形过程进行数值模拟,分析坯料在制坯、正挤压和镦粗法兰3个工序中的应变分布、温度场分布和金属流动规律,得到了凸模载荷-行程曲线图;预测成形过程中缺陷产生的可能性,并分析坯料加热温度、凸模挤压速度、模具预热温度3个主要因素对正挤压成形效果的影响。生产验证了该热挤压工艺的可行性,为半轴套管的实际生产工艺的制定提供了参考依据。

Numerical simulation and experimental study on hot extrusion forming of half shaft bushing

Numerical simulation was performed for the hot extrusion process according to the characteristics of half shaft bushing by using DEFORM-3D finite element software.Strain distribution,temperature distribution and the flowing rule of metal in the process of blanking,forward extrusion and flange upsetting were analyzed.The curve of load-stroke was also achieved and the possibility of generating defects in the forming process was predicted.The positive influence of three major factors including the heating temp...