Metal flowing behavior during welding process of porthole extrusion for complicate Al-alloy profile

被引：0
作者：
机构：
[1] School of Materials Science and Engineering, Inner Mongolia University of Technology, Hohhot
[2] Beijing Institute of Aeronautical Materials, Beijing
来源：
Huang, Dong-Nan | 1600年 / Beijing Institute of Aeronautical Materials (BIAM)卷
关键词：
Al-alloy profile; Extrusion; Numerical simulation; Welding;
D O I：
10.11868/j.issn.1001-4381.2014.09.012
中图分类号：
学科分类号：
摘要：
Using FEM combined with mesh reconstruction technology in welding zone, the metal flowing behaviors during welding process of porthole extrusion for a complicate profile were obtained. The die construction, including adjusting the porthole area, position, the expanding angle, was optimized. After optimizing, the number of metal planes welding simultaneously increases from 1 to 5. The homogeneity of the metal flowing velocities near the center and the left side of the profile is improved, and the warp at the bottom of the profile is avoided. The maximal hydrostatic stress in welding chamber is 484MPa which is enough to meet the requirement of welding. The distribution of the hydrostatic stress around the mandrel is uniform which is beneficial to avoid thickness deviation of the profile.
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页码：68 / 75
页数：7
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