Contribution of metal vapor mass at periphery part of pulsed arc to electromagnetic force in weld pool
Contribution of metal vapor mass at periphery part of pulsed arc to electromagnetic force in weld pool
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脉冲电弧周边金属蒸气质量对熔池电磁力的贡献
DOI：
10.1002/eej.23199
复制
发表时间：
2019
影响因子：
0.4
通讯作者：
Iwao Toru
中科院分区：
文献类型：
--
作者：
Tanaka Tatsuro;Maeda Yoshifumi;Yamamoto Shinji;Iwao Toru
电弧焊因其价格低廉、焊后强度高而被广泛应用于各种焊接方法中。然而，由于焊接缺陷导致桥梁倒塌等事故的发生是一个问题。要求低成本、高生产率的焊接无焊接缺陷。脉冲TIG焊是一种廉价的、高质量的焊接方法。电弧温度的瞬态响应和阳极产生的铁蒸气的瞬态响应使电磁力发生变化。然而，对脉冲TIG焊接中金属蒸气的分析，只对阳极附近的金属蒸气浓度、瞬态现象和热流密度进行了分析。因此，对带控制因子的侵彻深度的理论解释尚未深入研究。本文阐述了脉冲电弧外围金属蒸气质量对焊池电磁力的贡献。结果表明，随着频率的增加，外围部分的铁蒸气质量减小。在一个循环内，铁蒸汽在轴中心处于停滞状态。熔池中向熔深方向的电磁力在轴心处增大。因此，外围部分的金属蒸气质量对轴向中心的电磁力增量起着重要作用。
The arc welding has been used in various welding methods because it is inexpensive and high in strength after welding. However, it is a problem that accidents such as collapse of the bridge occur because of the welding defects. The welding of low cost and high productivity is required without the welding defects. The pulsed TIG welding is inexpensive and capable of high‐quality welding. The electromagnetic force contributing to penetration changes because the transient response of arc temperature and iron vapor generated from anode occurs. However, the analysis of pulsed TIG welding with metal vapor has been elucidated only metal vapor concentration near anode with transient phenomenon and heat flux. Thus, the theoretical elucidation of penetration depth with control factor has not been researched. In this paper, the contribution of metal vapor mass at the periphery part of pulsed arc to the electromagnetic force in the weld pool is elucidated. As a result, the iron vapor mass at periphery part decreased with increasing the frequency. The iron vapor was stagnated at axial center within one cycle. The electromagnetic force to the penetration depth direction in weld pool increased at axial center. Therefore, the metal vapor mass at periphery part plays an important role for the electromagnetic force increment at axial center.
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DOI：
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发表时间：
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期刊：
Quarterly Journal of The Japan Welding Society
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