PPCA-TIG焊过程中MnCl_(2)和CaF_(2)活性剂电弧光谱对比研究  

Spectral Analysis of PPCA-TIG Welding Arc based on MnCl_(2)and CaF_(2)

作　　者：姜百川 黄勇[1,2] 岳仕麒 何正刚 位亚魁 黄健康[1,2] JIANG Baichuan;HUANG Yong;YUE Shiqi;HE Zhenggang;WEI Yakui;HUANG Jiankang(School of Materials Science and Engineering,Lanzhou University of Technology,Lanzhou 730050,China;State Key Laboratory of Advanced Processing and Reuse of Nonferrous Metals,Lanzhou University of Science and Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学材料科学与工程学院,甘肃兰州730050 [2]兰州理工大学有色金属先进加工与再利用国家重点实验室,甘肃兰州730050

出　　处：《电焊机》2024年第7期55-61,共7页Electric Welding Machine

基　　金：国家自然科学基金资助项目(5196050178)。

摘　　要：PPCA-TIG焊作为一种高效焊接方法,提高了活性元素在熔池表面的利用率,但对该电弧物理行为的理解仍存在空缺。为阐明PPCA-TIG焊中活性元素在电弧中的分布特征和对电弧物理行为的影响规律,拟采用光谱法,设计电弧空域逐点扫描同步采集系统,使用CaF_(2)、MnCl_(2)两种活性剂,采用Stark谱线法计算电弧电子密度,并对Ca、Mn元素的分布特征进行讨论。结果表明,相同参数下,加入MnCl_(2)和CaF_(2)活性剂后能明显提高整体电弧的电离度和电子密度,在热输入保持不变的情况下,电子密度的提高导致电流密度增加,熔池表面的热量更加集中,从而增加焊缝熔深。PPCA-TIG welding as a high-efficiency welding method improves the utilisation of active elements on the surface of the molten pool,but there is still a gap in the understanding of the physical behaviour of this arc.In order to elucidate the distribution characteristics of active elements in the arc and the influence law on the physical behaviour of the arc in PPCA-TIG welding,this paper intends to adopt the spectroscopic method,design the arc airspace point-by-point scanning synchronous acquisition system,and use two active agents,CaF_(2) and MnCl_(2),to calculate the electron density of the arc by using the Stark spectral line method,and the distribution characteristics of the Ca and Mn elements are discussed.The results show that under the same parameters,the addition of MnCl_(2)and CaF_(2) active agents can significantly increase the overall arc ionisation,and can significantly increase the electron density of the arc.Under the condition that the heat input is kept unchanged,the increase in electron density leads to an increase in current density,and the heat on the surface of the molten pool is more concentrated,thus increasing the weld depth.

关 键 词：PPCA-TIG焊 活性剂 电子密度 电弧光谱 电弧温度 

分 类 号：TG444[金属学及工艺—焊接]