[Study of the effect of heat source separation distance on plasma physical properties in laser-pulsed GMAW hybrid welding based on spectral diagnosis technique].
[Study of the effect of heat source separation distance on plasma physical properties in laser-pulsed GMAW hybrid welding based on spectral diagnosis technique].
复制标题
基于光谱诊断技术的激光脉冲GMAW复合焊热源间距对等离子体物理性能的影响研究
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
Fang Li
中科院分区：
文献类型：
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作者：
Weineng Liao;Xueming Hua;Wang Zhang;Fang Li
本文利用玻尔兹曼光谱法计算了激光-脉冲GMAW复合焊接中不同热源分离距离下等离子体的峰值电子温度。利用等离子体谱的斯塔克宽度计算了相应条件下等离子体的峰值电子密度。结合高速摄影技术，研究了热源分离距离对电子温度和电子密度的影响。结果表明，随着热源分离距离的增加，激光等离子体的电子温度和电子密度没有明显变化。等离子体的电子温度下降，电子密度先升高后降低。
In the present paper, the authors calculated the plasma's peak electron temperatures under different heat source separation distance in laser- pulse GMAW hybrid welding based on Boltzmann spectrometry. Plasma's peak electron densities under the corresponding conditions were also calculated by using the Stark width of the plasma spectrum. Combined with high-speed photography, the effect of heat source separation distance on electron temperature and electron density was studied. The results show that with the increase in heat source separation distance, the electron temperatures and electron densities of laser plasma did not changed significantly. However, the electron temperatures of are plasma decreased, and the electron densities of are plasma first increased and then decreased.