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Measurement of arc light spectrum in the MAG welding method

Węglowski M. S.

Metrology and Measurement Systems

2009

Vol. 16, nr 1

143-159

Welding arc light can be seen as a signal carrying essential information about the welding process and exploited in the monitoring of the welding process. Results of experimental research on the radiation of the welding arc in the Metal Active Gas (MAG) welding method are presented for an industrial platform. The methodology of calculation of the spectrophotometer spectral response is presented. The range of the tested wavelengths has been limited to visible radiation of the welding arc in the range of 340-500 nm. The conditions of arc burning were modified by changing the welding parameters. During experiments the welding current was changed in the range of 104-235 A. The analysis of the spectrum of the radiation of the welding arc is investigated. This method can be useful for the monitoring of arc welding and laser welding processes.