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.
引用
收藏
页码：68 / 75
页数：7
相关论文
共 16 条
  • [11] Yu J.Q., Zhao G.Q., Zhang C.S., Et al., Effect of baffle-block on material flow velocity during thin-walled hollow aluminum profile extrusion , Journal of Mechanical Engineering, 48, 16, pp. 52-58, (2012)
  • [12] Song J.S., Lin G.Y., He J.J., Et al., Numerical simulation of extrusion process and die optimization of 106XC aluminum body profile for track vehicle , Journal of Central South University: Science and Technology, 43, 9, pp. 3372-3379, (2012)
  • [13] Huang D.N., Yu Y., Ning Y., Et al., FEM simulation of an Al-alloy profile with non-symmetrical cross section during porthole extursion , Journal of Materials Engineering, 3, pp. 32-37, (2013)
  • [14] Xie J.X., Huang D.N., Li J.Y., Et al., A numerical simulation technology for hollow profile extrusion by porthole die, (2010)
  • [15] Huang D.N., Li J.Y., Zhang Z.H., Et al., The metal flowing behaviors during the diplopore extrusion of square tube by a porthole die , The Chinese Journal of Nonferrous Metals, 20, 3, pp. 488-495, (2010)
  • [16] Huang D.N., Zhang Z.H., Li J.Y., Et al., Influence of welding chamber depth and welding angle on forming quality of diplopore extrusion of square tube by a porthole die , The Chinese Journal of Nonferrous Metals, 20, 5, pp. 954-960, (2010)
12