Abstract
Online video diagnostics was used in the process of laser metal deposition. The method of short-time correlation was applied to analyse fluctuations in the size of the molten pool. Power distributions of the cross correlation of the breadth and length of the pool depending on the intensity of laser irradiation up to 30 kW/cm2 are obtained. The intermittency in parameters of the molten pool is associated with changes in the structure of convective Marangoni flows in the melt during the formation of the bead. It is shown to decrease the duration of the regular changes in the parameters of the molten pool with the increase in the intensity of laser irradiation.
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