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楔横轧空心件压扁变形对成形的影响

Keywords: 楔横轧,空心零件,有限元,压扁变形,塑性弯曲变形

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Abstract:

楔横轧空心零件过程中轧件会发生压扁变形,增加了成形的困难.文中首先采用有限元数值模拟的方法,对平板压缩实心零件和空心零件进行对比,研究了空心零件压扁变形的特征,并得到了压下量和相对壁厚是影响压扁变形程度的主要因素.通过模拟两辊楔横轧成形实心和空心零件的轧制过程,分析了压扁变形使空心零件旋转条件变差的原因及其对轧制过程和成形结果产生的影响,进而提出了改善成形条件的方法.

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