横向磁脉冲MAG焊电弧旋转机理研究

孙志星; 路林; 包正义; 詹瑜; 汤传圣

doi:10.7512/j.issn.1001-2303.2020.10.20

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横向磁脉冲MAG焊电弧旋转机理研究
Effect of tra nsverse magnetic field on shape of MAG welding arc
2020年50卷第10期页码：97-102
纸质出版：2020
DOI： 10.7512/j.issn.1001-2303.2020.10.20
稿件说明：

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孙志星, 路林, 包正义, 等. 横向磁脉冲MAG焊电弧旋转机理研究[J]. 电焊机, 2020,50(10):97-102. DOI： 10.7512/j.issn.1001-2303.2020.10.20.

SUN Zhixing, LU Lin, BAO Zhengyi, et al. Effect of tra nsverse magnetic field on shape of MAG welding arc[J]. Eletric Welding Machine2020, 50(10): 97-102. DOI： 10.7512/j.issn.1001-2303.2020.10.20.

摘要

通过外加横向磁场控制焊接电弧形态是磁控焊接技术的重要研究领域

文中通过外加横向磁场的方式来改变电弧的能量分布以及电弧形态变化从而探寻外加磁场对电弧形态及熔滴过渡的影响规律。结果表明

MAG焊电弧在保持原有"钟罩型"形态时

末端发生后拖;同时

横向磁场的加入使熔滴过渡频率加快

熔滴过渡周期缩短。电弧末端后拖可有效抑制熔池内液体流动

改善焊缝成形。

Abstract

Controlling the shape of the welding arc by applying a transverse magnetic field is an important research field of magnetron welding technology. In this paper

the transverse magnetic field is applied to change the arc energy distribution and arc shape change to explore the effect of the applied magnetic field on the arc shape and the excessive droplets. The results of the study show that

while maintaining the original bell-shaped shape of the MAG welding arc

the end dragged behind. At the same time

the addition of transverse magnetic field accelerates the excessive frequency of droplets and shortens the period of excessive droplets.Trailing after the end of the arc can effectively inhibit the liquid flow in the molten pool and improve the weld formation.