Spectroscopic analysis of the arc plasma of underwater wet flux-cored arc welding

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• 作者：Chuanbao Jia^a ; ^{jiachuanbao@gmail.com} ; ^{jiachuanbao@163.com} ; Tao Zhang^a ; ^{zhangtaolj@126.com} ; Sergii Yuri Maksimov^b ; ^{maksimov@paton.kiev.ua} ; Xin Yuan^a ; ^{samuelyuan@126.com}
• 关键词：Underwater welding ; Flux-cored arc welding ; Spectroscopic analysis ; Composition ; Arc plasma
• 刊名：Journal of Materials Processing Technology
• 出版年：2013
• 出版时间：August, 2013
• 年：2013
• 卷：213
• 期：8
• 页码：1370-1377
• 全文大小：1227 K

文摘

Experiments in air and under water (0.4 m depth) were conducted and the spectrum signals collected. The width of the weld under water was about two-thirds of the width in air, suggesting that the arc plasma was compressed by the water environment. The two sets of spectrum signals were largely similar except for the ultraviolet spectrum, from where the environmental effects were inferred. The analysis identified a unique peak at 656.2793 nm in the underwater spectrum, consistent with H atomic transitions, suggesting that H atoms become involved, although without affecting the overall spectral similarity of the two environments. In either environment the arc plasma was mainly composed of self-shielding gas and evaporated metals, with only minor effects stemming from the interaction with water.