title: [Plasma temperature calculation and coupling mechanism analysis of laser-double wire hybrid welding].
abstract: 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.
authors.affiliation: Tianjin Key Laboratory of Advanced Joining Technology, Tianjin University, Tianjin 300072, China. zhengkai@tju.edu.cn
authors.forename: Kai
authors.initials: K
authors.lastname: Zheng
authors.forename: Huan
authors.initials: H
authors.lastname: Li
authors.forename: Li-Jun
authors.initials: LJ
authors.lastname: Yang
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Gu
authors.forename: Ying
authors.initials: Y
authors.lastname: Gao