FIELD: electricity.
SUBSTANCE: welding laser beam is emitted along the welding path, located on the parts to be welded, and can also radiate the reference laser beam along the scanning path, located in the melt bath on the parts to be welded, which are melted by emission from the welding laser beam. At that the response light emission from the welding area is received, and the quality control of the welded section is performed by comparing the Fourier transform, performed for the ratio between the intensity of the first light emission response component, containing the glowing of the vapour and the intensity of the second component, containing the heat emission light or for the relation changing rate between the indicated intensities, with the specified threshold value.
EFFECT: using of the invention makes it possible to improve the accuracy of the defects control in the welded section.
8 cl, 20 dwg
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