锻压技术

等径三通管整体液压成形壁厚分布规律

英文标题：Wall thickness distribution in integral hydroforming for equal T-shaped tube

作者：包文兵徐雪峰戴龙飞王高潮

单位：南昌航空大学

分类号：TG394

出版年,卷(期):页码：2017,42(4):91-95

摘要：

对铝合金薄壁三通管壁厚分布规律进行研究。将管坯放入模具型腔，通过轴向进给补料、内部增压，沿下模具型腔中间倒圆角处凸出一个较高的等径支管，形成等径三通管。通过数值模拟和实验对等径三通管整体液压成形的过程进行研究，分析了三通管整体液压成形4个不同阶段的管材壁厚分布规律和管材关键部位壁厚的变化规律。研究发现，成形管材底部的壁厚最大，过渡圆角周边处次之，支管顶端周边最薄。数值模拟和实验结果相吻合，为T型三通管零件生产奠定了基础。

The wall thickness distribution of aluminum alloy thin-wall T-shaped tube was investigated. The tube blank was put into the die cavity,and then a higher equal branch pipe bulged out along the fillet in the center of die cavity to form the equal T-shaped tube by axial feeding and internal pressure increasing. Therefore, the integral hydroforming process of equal T-shaped tube was studied by numerical simulation and experiments, and the wall thickness distributions of tube were analyzed under four different forming stages. Furthermore, the wall thickness change law in the key position of tube was studied. The results show that the wall thickness of tube bottom is the thickest, the second place is at the transition corner, and the top of branch pipe is the thinnest. The numerical simulation coincides with the experiment result, and it lays the foundation for the production of T-shaped tube parts.

基金项目：

国家自然科学基金资助项目（51405219）；中航工业产学研项目(BA201306321)

包文兵（1991-），男，硕士研究生 E-mail：172768779@qq.com 通讯作者：徐雪峰(1984-)，男，博士，副教授 E-mail：xfwinzy@163.com

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