The Influence of Longitudinal Magnetic Field on the CO<sub>2 </sub>Arc Shape

CHANG Yunlong (常云龙); LIU Mingxu (刘明旭); LU Lin (路林); A. S. BABKIN; Bo-Young LEE

doi:10.1088/1009-0630/17/4/11

Plasma Science and Technology > 2015 > 17(4): 321-326. > DOI: 10.1088/1009-0630/17/4/11

CHANG Yunlong (常云龙), LIU Mingxu (刘明旭), LU Lin (路林), A. S. BABKIN, Bo-Young LEE. The Influence of Longitudinal Magnetic Field on the CO₂Arc Shape[J]. Plasma Science and Technology, 2015, 17(4): 321-326. DOI: 10.1088/1009-0630/17/4/11

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The Influence of Longitudinal Magnetic Field on the CO₂Arc Shape

1 Institute of Material Science and Engineering, Shenyang University of Technology, Shenyang 110870, China 2 Metallurgical Institute, Lipetsk State Technical University, Lipetsk 398024, Russia 3 School of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang, Gyeonggi-do 412-791, Republic of Korea

Funds: supported by National Natural Science Foundation of China (No. 51275314) and the Program of Science and Technology Foundation of Shenyang, China (F13-316-1-04)

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Received Date: May 11, 2014

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Abstract

Abstract

The CO₂ arc welding was carried out under a longitudinal magnetic field, and the arc shape has been studied by using a high-speed camera. From the camera images, we know that under the action of the longitudinal magnetic field, the upper end of the arc will constrict and the lower end of the arc will expand. It would become a bell-type shape and rotate at a high- speed in the optimum range of magnetic field parameters. The arc shape was simulated using a mathematical model, which was established based on experiment data and theoretical knowledge, and mechanism analysis has been carried out regarding the effect of longitudinal magnetic field on CO ₂ welding arcs.
- longitudinal magnetic field,
- high-speed camera,
- the arc of CO₂ welding,
- computer simulation technology

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