Tomographic spectroscopic observation of argon and metal vapor behavior in MIG arc welding

Spectroscopic measurements for GMA phenomena have been performed. The studies have reported that the metal vapor behavior greatly affects the arc properties. However, they can be applied only to axially symmetric phenomena because of the assumption used for the measurement. GMA welding is normally p...

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Bibliographic Details
Published inWelding in the world Vol. 60; no. 1; pp. 117 - 125
Main Authors Nomura, Kazufumi, Kataoka, Kotaro, Mimura, Kohei, Hirata, Yoshinori, Kishi, Takashi
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer Berlin Heidelberg 01.01.2016
Subjects
Chemistry and Materials Science
Materials Science
Metallic Materials
Research Paper
Solid Mechanics
Theoretical and Applied Mechanics
Measurement
Spectroscopy
Plasma
Spray transfer
Imaging
Optics
Globular transfer
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Summary:Spectroscopic measurements for GMA phenomena have been performed. The studies have reported that the metal vapor behavior greatly affects the arc properties. However, they can be applied only to axially symmetric phenomena because of the assumption used for the measurement. GMA welding is normally performed while moving and most of the phenomena become axially asymmetric. In this study, we constructed a simultaneous and multi-directional measurement system using multiple CCD cameras which can capture such axially asymmetric GMA phenomena. We measured the arc radiation by means of two types of narrowband interference filters for Ar and Fe during one measurement and observed axially asymmetrical intensity distributions in the globular and spray transfer mode. We found that the globular transfer mode that has seemingly chaotic distribution can be regarded as a distribution where the deviation of Ar is larger than Fe from an axially symmetric double-ring distribution.
ISSN:0043-2288
1878-6669
DOI:10.1007/s40194-015-0267-7