| 光谱学与光谱分析 |
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| Plasma Temperature Calculation and Coupling Mechanism Analysis of Laser-Double Wire Hybrid Welding |
| ZHENG Kai1, LI Huan1, YANG Li-jun1*, GU Xiao-yan1, GAO Ying2 |
1. Tianjin Key Laboratory of Advanced Joining Technology，Tianjin University，Tianjin 300072，China
2. Tianjin Key Laboratory of High Speed Cutting and Precision Machining，Tianjin University of Technology and Education，Tianjin 300222，China |
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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.
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Received: 2012-09-02
Accepted: 2012-11-20
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Corresponding Authors:
YANG Li-jun
E-mail: yljabc@tju.edu.cn
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