[Plasma temperature calculation and coupling mechanism analysis of laser-double wire hybrid welding].

The plasma radiation of laser-double wire hybrid welding was collected by using fiber spectrometer,the coupling mechanism of arc with laser was studied through high-speed photography during welding process,and the temperature of hybrid plasma was calculated by using the method of Boltzmann plot.The results indicated that with laser hybrid,luminance was enhanced;radiation intensity became stronger;arc was attracted to the laser point;cross section contracted and arc was more stable.The laser power,welding current and arc-arc distance are important factors that have great influence on electron temperature.Increase in the laser power,amplification of welding current and reduction of arc-arc distance can all result in the rise of temperature.