Transactions of Materials and Heat Treatment

Title：Influence of barrier-rib shape for double-tube with barrier ribs parts on forming of inner and outer tubes

Authors： Ma Xiaohu Zhang Baohong Li Guojun Zhang Zhimin Liang Zhu

Unit： North University of China

KeyWords： aluminum alloy binocular-shaped part extrusion forming inner stud part numerical simulation

ClassificationCode：

year,vol(issue):pagenumber：2016,41(1):6-10

Abstract：

In order to get on good comprehensive properties for a double-tube with barrier ribs of aluminum extrusion, a whole extrusion forming process was simulated firstly, in which defects such as folding, squeezing pressure and insufficiency local strength were found. Based on the above defects, the forming process was improved, and the optimized extrusion solution was ultimately determined as the binocular-shaped part with extrusion skin barrier ribs in the middle and at the end face of the barrier ribs with a teardrop-shaped circular arc. Further, the modified process was analyzed by simulation. The results show that the fillet affects the fold greatly by increasing the fillet to reduce the flow resistance towards rib and improve the flow state of the material, and then the optimal transition radius is obtained. Finally, the experimental verification was carried out by the modified die, and the good quality extrusion part was obtained.

Funds：

山西省自然科学基金资助项目（2013011022-5）

马晓虎（1989-），男，硕士研究生

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