气体保护金属极电弧焊
保护气体
材料科学
焊接
极性(国际关系)
电极
电磁屏蔽
弧(几何)
复合材料
等离子弧焊接
电弧焊
钨极气体保护焊
机械
冶金
化学
机械工程
生物化学
物理
物理化学
工程类
细胞
作者
Zhidong Yang,Jian‐Dong Huang,Kai Xu,Peng He
标识
DOI:10.1080/10426914.2023.2219318
摘要
The effect of polarity and shielding gases on the droplet transfer behavior and formation trend of cable-type welding wire gas metal arc welding was studied under the same welding parameters. An acquisition system was used to observe welding parameters, droplet transfer and arc behavior. The results showed that the arc shapes with different polarities under the same shielding gas were different. The arc length and width in direct current electrode positive (DCEP) mode were smaller than those in direct current electrode negative (DCEN) mode. For the same polarity and different shielding gases, with increasing CO2 gas content, the arc length and width gradually decreased. In DCEP mode, droplet transfer was characterized by globular and projected droplet transfer modes. The droplet transfer modes with different polarities differed under different shielding gases. The droplet transfer mode was basically the same for the same polarity. With increasing CO2 content, the weld bead formation gradually improved.
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