Downward welding pool shape control based on exterior high frequency alternative magnetic field

被引：3
作者：
Yue, Jianfeng [1 ]
Li, Liangyu [1 ]
Liu, Wenji [1 ]
Wang, Tianqi [1 ]
机构：
[1] Tianjin Key Laboratory of Modern Mechatronics Equipment Technology, Tianjin Polytechnic University
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2013年 / 49卷 / 08期
关键词：
Eddy current; High frequency magnetic field; Metal active gas welding; Weld pool;
D O I：
10.3901/JME.2013.08.065
中图分类号：
学科分类号：
摘要：
Recent years, downward welding is used widely more and more in petrochemical, pipeline engineering and so on. However, with the increase in volume of weld pool during downward welding, weld pool becomes instable because of influence of gravity, even affecting the good bead shape. Weld pool mechanical behavior and the control strategy of the weld pool forming is analyzed and researched, on the base, a method is proposed in the welding that the Lorenz force produced to overcome bad effect of gravity component when the weld pool is exposed to exterior high frequency alternative magnetic field. The numerical simulation on electromagnetic field, eddy current field and electromagnetic force in the interior of weld pool are implemented. 45 degree and 90 degree downward welding experiments are carried out to verify the theory analysis. Experiment results show that it is feasible for using eddy current technology to overcome weld pool instable resulted by gravity component in downward metal active gas(MAG) welding. © 2013 Journal of Mechanical Engineering.
引用
收藏
页码：65 / 70
页数：5
相关论文
共 16 条
  • [1] Chang X., Zong Z., Lin W., Et al., Present situation and development tendency of the vertical down welding technology of pipeline in China, Welding, 11, pp. 5-8, (2001)
  • [2] Murray R.G., Cooper N., Building submarine components from duplex stainless steels, Welding Journal, 85, 11, pp. 32-33, (2006)
  • [3] Masoumi F., Shahriari D., Effects of welding positions on mechanical properties and microstructure in weld metal of high strength steel, Advanced Materials Research, 83, pp. 1121-1127, (2010)
  • [4] Li Z., Advanced Joint Method, (2000)
  • [5] Zheng Z., The improvement of efficiency in all position gas tungsten arc welding(GTA), Journal of Marine Technology, 6, pp. 27-31, (1985)
  • [6] Tang D., Feng B., Li C., Et al., Study on the all-position back sealing welding of pipeline, Electric Welding Machine, 36, 9, pp. 37-42, (2006)
  • [7] Yang C.L., Guo N., Lin S.B., Et al., Application of rotating arc system to horizontal narrow gap welding, Science and Technology of Welding and Joining, 14, 2, pp. 172-177, (2009)
  • [8] Luo J., Jia C., Wang Y., Et al., Mechanism of the gas tungsten-arc welding in longitudinal magnetic field controlling, Acta Metallurgica Sinica, 37, 2, pp. 212-216, (2001)
  • [9] Chen S., Wang J., Wang H., Et al., Principle of rotating transfer undergoing longitudinal magnetic field control, Transactions of the China Welding Institution, 26, 3, pp. 45-54, (2005)
  • [10] Yanagi K., Effect of magnetic field on the behavior and sustaining characteristics of low-current DC vacuum arc, Electrical Engineering, 161, 1, pp. 1-9, (2007)
12