Study of laser radiation absorption in a TIG welding arc
Study of laser radiation absorption in a TIG welding arc
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DOI：
10.1007/s40194-015-0222-7
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发表时间：
2015-01
影响因子：
2.1
通讯作者：
R. Kozakov;G. Gött;D. Uhrlandt;B. Emde;J. Hermsdorf;V. Wesling
中科院分区：
文献类型：
--
作者：
R. Kozakov;G. Gött;D. Uhrlandt;B. Emde;J. Hermsdorf;V. Wesling
低功率激光辐射可用于影响电弧焊接过程，目的是稳定或引导工件上的电弧附着。最近的研究表明，与红外辐射相比，共振辐射吸收可能是有益的。后者主要在工件表面被吸收，而在弧线辐射范围内的激光辐射可以对电弧产生明显的影响。通过光谱、辐射功率和电压测量，系统地研究了钨极惰性气体（TIG）电弧对811 nm附近和400 W激光功率范围内的激光辐射的吸收。对于在120 A的TIG电弧，发现相当大的辐射吸收，而电弧电压改变了一些毫伏，和线发射系数的变化主要在外部的电弧。
Low-power laser radiation can be used to influence an arc welding process with the aim of stabilisation or guiding the arc attachment at the workpiece. Recent studies showed that resonant radiation absorption can be beneficial compared with infrared radiation. The latter is mostly absorbed at the workpiece surface, whereas laser radiation in the range of arc line radiation can have an explicit impact on the arc. The absorption of laser radiation in the range around 811 nm and laser power up to 400 W by a tungsten inert gas (TIG) arc is studied systematically by spectroscopic, radiation power and voltage measurements. For a TIG arc at 120 A, considerable radiation absorption is found whereas arc voltage is changed by some millivolt, and line emission coefficients change mainly in the outer part of the arc.