脉冲TIG焊由于其优越的特性而广泛应用于工业中, 准确测量电弧温度对分析焊接过程有重要意义。 论文基于光谱学理论计算了氩元素的粒子数密度与温度之间的关系曲线, 计算了794.8 nm氩原子谱线的发射系数与温度之间的关系曲线, 利用高速摄影获得了794.8 nm特征谱的电弧图像, 根据Abel变换和标准温度法计算了脉冲TIG焊峰值时刻和基值时刻的电弧温度场分布。

Pulsed TIG welding is widely used in industry due to its superior properties, and the measurement of arc temperature is important to analysis of welding process. The relationship between particle densities of Ar and temperature was calculated based on the theory of spectrum, the relationship between emission coefficient of spectra line at 794.8 nm and temperature was calculated, arc image of spectra line at 794.8 nm was captured by high speed camera, and both the Abel inversion and Fowler-Milne method were used to calculate the temperature distribution of pulsed TIG welding.