中文摘要：

通过调整焊接参数,对不同焊接参数下(弧长、电流、气流量),钢(直流正接)和铝(直流反接)TIG焊电弧的光谱分布信息进行了采集,研究不同焊接参数下焊接电弧光谱信息的变化规律。结果表明,钢TIG焊过程中,不同谱段辐射强度会随弧长增加而增加,但在弧长较长时与较短时变化规律不同;其中线谱较少区域与弧长变化之间的线性度最好;辐射随焊接电流的增加成正比增加;在气流量较大时,随气流量变化不明显,气流量较小时存在明显影响。铝在TIG焊中,随弧长变化,光谱辐射强度没有明显变化;辐射随焊接电流的增加成正比增加;在气流量较大时随气流量变化不明显,气流量较小时存在明显影响。

英文摘要：

Through adjusting welding parameters such as welding current,arc length and gas flow rate,the spectral distributions of TIG welding arc were collected.In order to explore the variation of arc radiation in different spectral zone,TIG welding processes of steel and aluminum were studied for spectral distribution analysis,respeetively.For TIG welding of steel,the light radiation increases with the arc length in different spectral zone,among which the radiation intensity in spectral zones with less line spectru...