Abstract
This study analyzed the influence of magnetic induction intensity on the plasma electron temperature distribution and the molten pool flow behavior by high-speed imaging and spectral analysis. With the increase in magnetic induction intensity, the plasma high-temperature center region gradually increased, and the plasma electron temperature increased from the bottom of the groove to the edge of the groove. The magnetic field showed a stirring effect on the molten pool. Certain magnetic field intensities can make the molten pool more uniform and flow more stable. Compared with the penetration depth and penetration area size of the weld with or without a magnetic field, the penetration depth and penetration area of the weld under the magnetic field increased. A certain range of magnetic induction intensity can be coupled with other process parameters to achieve an ideal effect and form a weld.
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