Influence of Welding Current and Focal Position on the Resonant Absorption of Laser Radiation in a TIG Welding Arc
Influence of Welding Current and Focal Position on the Resonant Absorption of Laser Radiation in a TIG Welding Arc
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焊接电流和焦点位置对 TIG 焊接电弧激光辐射谐振吸收的影响
DOI：
10.1016/j.phpro.2014.08.064
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发表时间：
--
期刊：
影响因子：
--
通讯作者：
L. Overmeyer
中科院分区：
文献类型：
--
作者：
B. Emde;M. Huse;J. Hermsdorf;S. Kaierle;V. Wesling;L. Overmeyer
研究了焊接电流和焦点位置对TIG焊电弧中激光辐射共振吸收的影响。激光束垂直于电弧被引导以避免与电极相互作用。激光功率测量表明，在通过电弧后，测量的激光功率降低高达18%。这种减少是由于氩气保护气体原子和810.4 nm和811.5 nm激光辐射的相互作用。这种相互作用强烈地受到调节的焊接电流以及激光束和电弧的调节的影响。降低焊接电流或将激光束移出电弧中心线可降低电离概率。为了降低电弧的电阻，增加电离是必要的。
The work presents the influence of welding current and focal position on the resonant absorption of diode laser radiation in a TIG welding arc. The laser beam is guided perpendicular to the electrical arc to avoid an interaction with the electrodes. Laser power measurements have shown a reduction of the measured laser power up to 18% after passing the electrical arc. This reduction results from the interaction of argon shielding gas atoms and laser radiation at 810.4 nm and 811.5 nm. The interaction is strongly affected by the adjusted welding current and the adjustment of the laser beam and the electrical arc. Lowering the welding current or shifting the laser beam out of the centerline of the electrical arc reduces the ionization probability. An increased ionization is necessary to decrease the resistance of the electrical arc.
735 – 850 nm 波长范围内氩的一光子和二光子激发光电光谱
影响因子：
1.6
作者：
Hideyuki Matsuta;K. Wagatsuma;K. Kitagawa
通讯作者：
K. Kitagawa