CAJ | 학술논문

激光电弧复合焊中，热源间距会影响到等离子体物理特性，进而影响到焊接过程的稳定性及焊接质量。基于Boltzmann作图法和Stark展宽法研究了不同热源间距下的激光-脉冲GM AW复合焊峰值阶段的温度场和电子密度分布，并结合高速摄影手段分析了热源间距对温度和电子密度的影响规律。光谱诊断结果表明，随着热源间距的增大，激光等离子体的温度和电子密度都没有明显的变化；电弧温度出现下降，电弧电子密度则呈现先增高后降低的趋势。
격광전호복합한중，열원간거회영향도등리자체물리특성，진이영향도한접과정적은정성급한접질량。기우Boltzmann작도법화Stark전관법연구료불동열원간거하적격광-맥충GM AW복합한봉치계단적온도장화전자밀도분포，병결합고속섭영수단분석료열원간거대온도화전자밀도적영향규률。광보진단결과표명，수착열원간거적증대，격광등리자체적온도화전자밀도도몰유명현적변화；전호온도출현하강，전호전자밀도칙정현선증고후강저적추세。
In the present paper ,the authors calculated the plasma’s peak electron temperatures under different heat source sepa-ration 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 arc plasma decreased ,and the electron densities of arc plas-ma first increased and then decreased .