Analysis of influence mechanism of external transverse magnetic field on welding pool of 304 stainless steel

被引：0
|
作者：
Liu H. [1 ]
Chen H. [1 ]
Li L. [1 ]
Wang T. [1 ]
机构：
[1] Advanced Mechatronics Equipment Technology Tianjin Area Laboratory, Tianjin Polytechnic University, Tianjin
来源：
Hanjie Xuebao/Transactions of the China Welding Institution | 2019年 / 40卷 / 03期
关键词：
Electromagnetic pressure; External magnetic field; Finite element; Liquid metal flow;
D O I：
10.12073/j.hjxb.2019400074
中图分类号：
学科分类号：
摘要：
In order to improve the weld forming and the performance of welded parts, the coupling analysis between electromagnetic field and thermal flow field of 304 stainless steel weld pool under external magnetic field is carried out by finite element method in this paper, and the velocity vector distribution of liquid metal flow in weld pool under magnetic field and without magnetic field is obtained. The results show that the maximum velocity distribution in the cross section of the molten pool is changed from a single central part to a slightly lower upper surface and the bottom of the molten pool, and the maximum velocity distribution on longitudinal section is not only located at the vortex junction of the front molten pool and the tail molten pool but along two vortex flow direction more uniformly distributed. This is because the electromagnetic pressure offset part of the effect of surface tension, and the electromagnetic pressure makes the acting position of the surface tension is more close to the center of the molten pool and away from the edge of workpiece. The building-up welding test on 304 stainless steel is carried out, and the phase diagram of cross section of the welding confirms the above simulation results. © 2019, Editorial Board of Transactions of the China Welding Institution, Magazine Agency Welding. All right reserved.
引用
收藏
页码：71 / 75and84
页数：7513
相关论文
共 12 条
  • [1] Geng H., Xiong J., Huang D., Et al., Research status and trends of wire and arc additive manufacturing technology, Welding & Joining, 11, pp. 17-21, (2015)
  • [2] Wu C., Wang L., Chen J., Et al., Occurrence mechanism and suppression technology of humping bead in high-speed GMAW, Welding & Joining, 7, (2016)
  • [3] Liu Q., Wang F., Zhang Y., Et al., Numerical simulation of macrosegregation and temperature field of Cu-Cr two binary alloy, Materials Science and Technology, 6, pp. 73-78, (2016)
  • [4] Bachmann M., Avilov V., Gumenyuk A., Et al., About the influence of a steady magnetic field on weld pool dynamics in partial penetration high power laser beam welding of thick aluminium parts, International Journal of Heat and Mass Transfer, 60, pp. 309-321, (2013)
  • [5] Bachmann M., Avilov V., Gumenyuk A., Et al., Experimental and numerical investigation of an electromagnetic weld pool support system for high power laser beam welding of austenitic stainless steel, Journal of Materials Processing Technology, 214, 3, pp. 578-591, (2014)
  • [6] Chang Y., Lu L., Li Y., Et al., Mechanism of weld formation during high speed TIG welding with external magnetic fields, Transactions of the China Welding Institution, 34, 6, pp. 1-4, (2013)
  • [7] Hahn M., Weddeling C., Lueg-Althoff J., Et al., Analytical approach for magnetic pulse welding of sheet connections, Journal of Materials Processing Technology, 230, pp. 131-142, (2016)
  • [8] Bai X., Zhang H., Zhou X., Et al., Electromagneto-fluid coupling simulation of arc rapid prototyping process with external high-frequency magnetic field, Chinese Journal of Mechanical Engineering, 4, (2016)
  • [9] Chen R., Wang C., Jiang P., Et al., Effect of axial magnetic field in the laser beam welding of stainless steel to aluminum alloy, Materials & Design, 109, 5, pp. 146-152, (2016)
  • [10] Zhang T., Wu C., Numerical simulation of temperature field and fluid flow in keyhole plasma arc welding, Transactions of the China Welding Institution, 32, 7, pp. 87-90, (2011)
12