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Study on the correlation between plasma electron temperature and penetration depth in laser welding processes

机译:激光焊接过程中等离子体电子温度与穿透深度的相关性研究

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摘要

The plasma electron temperature has been estimated starting from the spectroscopic analysis of the optical emission of the laser-generated plasma plume during quite diverse stainless steel welding procedures (c.w. CO2 and pulsed Nd:YAG). Although the optical emissions present different spectral features, a discrete contribution of several iron lines can be highlighted in both types of welding. We have found that the electron temperature decreases as the laser power is enhanced, in static as well as dynamic conditions. Such a result could be useful to develop a closed loop control system of the weld penetration depth.
机译:等离子体电子温度是从光谱分析开始的,该光谱分析是在非常多样的不锈钢焊接程序(C.w. CO2和脉冲Nd:YAG)中激光产生的等离子体羽流的光发射进行的。尽管光发射具有不同的光谱特征,但在两种焊接方式中都可以突出显示几条铁线的离散贡献。我们发现,在静态和动态条件下,电子温度都随着激光功率的增加而降低。这样的结果对于开发焊缝熔深的闭环控制系统可能是有用的。

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