Numerical simulation of high-current vacuum arcs with an external axial magnetic field

2003 ◽  
Vol 31 (5) ◽  
pp. 890-901 ◽  
Author(s):  
E. Schade ◽  
D.L. Shmelev
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Axial Magnetic Field ◽  
High Current

High-current vacuum arc under axial magnetic field: Numerical simulation and comparisons with experiments

2006 ◽  
Vol 100 (11) ◽  
pp. 113304 ◽  
Author(s):  
Lijun Wang ◽  
Shenli Jia ◽  
Zongqian Shi ◽  
Mingzhe Rong
Keyword(s):  
Magnetic Field ◽  
Numerical Simulation ◽  
Axial Magnetic Field ◽  
Vacuum Arc ◽  
High Current

Radiation Power of a High-Current Vacuum Arc Stabilized by an Axial Magnetic Field in the Visible and UV Ranges of the Spectrum

2021 ◽  
Vol 47 (2) ◽  
pp. 118-121
Author(s):  
Yu. A. Barinov ◽  
K. K. Zabello ◽  
A. A. Logachev ◽  
I. N. Poluyanova ◽  
E. V. Sherstnev ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Axial Magnetic Field ◽  
Radiation Power ◽  
Vacuum Arc ◽  
High Current

scholarly journals 3D Numerical Study of External Axial Magnetic Field-Controlled High-Current GMAW Metal Transfer Behavior

Materials ◽  
2020 ◽  
Vol 13 (24) ◽  
pp. 5792
Author(s):  
Lei Xiao ◽  
Ding Fan ◽  
Jiankang Huang ◽  
Shinichi Tashiro ◽  
Manabu Tanaka
Keyword(s):  
Magnetic Field ◽  
Axial Magnetic Field ◽  
Numerical Study ◽  
Metal Transfer ◽  
Temperature Fields ◽  
Dominant Factor ◽  
Conductive Heat ◽  
High Current ◽  
Spray Transfer ◽  
Transfer Behavior

For gas metal arc welding (GMAW), increasing the welding current is the most effective way to improve welding efficiency. However, much higher current decreases the welding quality as a result of metal rotating-spray transfer phenomena in the high-current GMAW process. In this work, the external axial magnetic field (EAMF) was applied to the high-current GMAW process to control the metal transfer and decrease the welding spatters. A unified arc-droplet coupled model for high-current GMAW using EAMFs was built to investigate the metal rotating-spray transfer behavior. The temperature fields, flow fields in the arc, and droplet were revealed. Considering all the heat transferred to the molten metal, the Joule heat was found to be the dominant factor affecting the droplet temperature rise, followed by the anode heat. The conductive heat from the arc contributed less than half the value of the other two. Considering the EAMFs of different alternating frequencies, the arc constricting effects and controlled metal transfer behaviors are discussed. The calculated results agree well with the experimental high-speed camera observations.

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