Tomographic spectroscopic observation of argon and metal vapor behavior in MIG arc welding
Tomographic spectroscopic observation of argon and metal vapor behavior in MIG arc welding
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DOI：
10.1007/s40194-015-0267-7
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发表时间：
2015
影响因子：
2.1
通讯作者：
K. Nomura;Kotaro Kataoka;Kohei Mimura;Y. Hirata;Takashi Kishi
中科院分区：
文献类型：
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作者：
K. Nomura;Kotaro Kataoka;Kohei Mimura;Y. Hirata;Takashi Kishi
对GMA现象进行了光谱测量。研究表明，金属蒸气行为对电弧性能有很大影响。然而，由于测量所用的假设，它们只能应用于轴对称现象。GMA焊接通常在移动时进行，大多数现象变得轴向不对称。在这项研究中，我们构建了一个多方向的同时测量系统，利用多个CCD摄像机来捕捉这种轴不对称的GMA现象。我们利用Ar和Fe两种窄带干涉滤光片在一次测量中测量了弧光辐射，观察到了球状和喷雾转移模式下的轴向不对称强度分布。我们发现，表面上具有混沌分布的球状转移模可以看作是Ar比Fe偏离轴对称双环分布的分布。
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.