Transactions of Materials and Heat Treatment

Title：Influence of different parameters on metal streamline of aluminum alloy part with branch and optimization

Authors： Miao Zhan Zhang Zhimin Yu Jianmin Xu Wenlong Tian Yonggang

Unit： North University of China

KeyWords： aluminum alloy part with branch metal streamline extrusion finite element simulation

ClassificationCode：TG312

year,vol(issue):pagenumber：2021,46(2):105-110

Abstract：

The influences of different parameters on the metal streamline of aluminum alloy part with branch and the cause of metal streamline defects in the forming process of parts were analyzed by finite element simulation software, and the forming scheme of the optimal metal streamline distribution was determined by optimizing height-diameter ratio of billet, extrusion speed and friction factor. The research results show that properly increasing the friction between billet and mold can control the amount and velocity of radial metal flow in the later stage to effectively avoid the generation of flow defects, and the slower extrusion speed and the proper height-diameter ratio can effectively reduce the difference between radial flow speed and upward reverse extrusion speed of metal to avoid flow defects and make the metal streamline distribution of forming parts reasonable. Thus, through finite element simulation, the optimal forming scheme of metal streamline distribution is the friction factor of 0.3, the extrusion speed of 0.3 mm·s-1 and the height-diameter ratio of billet of 1.285.

Funds：

山西省自然科学基金资助项目 (201901D111176)

苗站(1992- )，男，硕士研究生，E-mail：miao_zhan2020@163.com；通讯作者：张治民（1956- ），男，博士，教授，博士生导师，E-mail：zhangzhimin1956@126.com

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