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首页> 外文期刊>Journal of Manufacturing Processes >Effect of metal transfer mode on spatter and arc stability in underwater flux- cored wire wet welding
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Effect of metal transfer mode on spatter and arc stability in underwater flux- cored wire wet welding

机译：金属转移方式对水下药芯焊丝湿焊飞溅和电弧稳定性的影响

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摘要

The effect of metal transfer mode on spatter and arc stability during underwater flux-cored wire wet welding at different process parameters are investigated adopting the synchronous acquisition system of X-ray image and electric signal. Two spatter modes i.e. the local droplet repelled spatter and the droplet explosion spatter were observed for the first time. The generation of the local droplet repelled spatter is attributed to the excessive and unstable repulsive forces, while the droplet explosion spatter is caused by the unstable repulsive forces and gas dynamic force. Welding spatters and arc stability depend on the metal transfer mode. During wide-angle globular repelled transfer mode, the droplet repelled spatter mode is observed and the forming frequencies of the local droplet repelled spatter and droplet explosion spatter are higher than other transfer modes. The short-circuit explosions are observed in short-circuit explosive transfer mode, causing numerous short-circuit explosive spatters. With the increase of arc voltage, both the spatter loss coefficient and voltage variation coefficient decrease firstly to the minimum at the arc voltage of 32 V and then increases gradually, attributed to the type and proportion of metal transfer mode.
机译：利用X射线图像和电信号的同步采集系统，研究了金属转移方式对水下药芯焊丝湿焊过程中不同工艺参数下飞溅和电弧稳定性的影响。首次观察到两种飞溅模式，即局部液滴排斥飞溅和液滴爆炸飞溅。局部液滴排斥飞溅的产生是由于过大和不稳定的排斥力，而液滴爆炸飞溅是由不稳定的排斥力和气体动力引起的。焊接飞溅和电弧稳定性取决于金属传输方式。在广角球形排斥转移模式中，观察到液滴排斥飞溅模式，并且局部液滴排斥飞溅和液滴爆炸飞溅的形成频率高于其他转移模式。在短路爆炸物传递模式中观察到短路爆炸，从而导致大量的短路爆炸物飞溅。随着电弧电压的增加，飞溅损失系数和电压变化系数在电弧电压为32 V时均先减小到最小值，然后逐渐增加，这归因于金属转移方式的类型和比例。

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  • 来源
    《Journal of Manufacturing Processes》 |2018年第10期|161-168|共8页
  • 作者

    Fu Yunlong; Guo Ning; Du Yongpeng; Chen Hao; Xu Changsheng; Feng Jicai;

  • 作者单位

    Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol Weihai, Shandong Prov Key Lab Special Welding Technol, Weihai 264209, Peoples R China;

    Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol, State Key Lab Adv Welding & Joining, Harbin 150001, Heilongjiang, Peoples R China;

    Harbin Inst Technol Weihai, Shandong Prov Key Lab Special Welding Technol, Weihai 264209, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Underwater wet welding; Welding spatter; Arc stability; Metal transfer mode;

    机译：水下湿焊​​焊接飞溅电弧稳定性金属传递方式;

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