Arc stability of underwater wet flux-cored arc welding
Arc stability of underwater wet flux-cored arc welding
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发表时间：
2012
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通讯作者：
Huang Jin
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作者：
Huang Jin
以焊接电压的标准差（SD）和变异系数（CV）的倒数作为电弧稳定性的指标，在水下湿法焊接试验的基础上，研究了不同焊接条件下水下湿法药芯焊丝焊接电弧稳定性，建立了电弧稳定性的敏感性模型，分析了焊接电流、焊接电压、焊接速度和水深等焊接参数对电弧稳定性的敏感性，结果表明，随着水深的增加，电弧稳定性变差，尤其是在浅水区，随着水深的增加，电弧稳定性急剧下降;随着焊接速度的增加，电弧稳定性也随之下降;焊接电压对电弧稳定性影响很大，适当提高焊接电压可以提高电弧稳定性。
Standard deviation(SD) and the reciprocal of coefficient of variation(CV) of welding voltage are used as the index of arc stability.The arc stability of underwater wet flux-cored arc welding in different welding conditions was studied based on underwater wet welding experiments.Sensitivity models of arc stability have been built and sensitivities of welding parameters on arc stability,such as welding current,voltage,speed and water depth,were analyzed.The results showed that the arc stability got worse as water depth increased.Especially in shallow water,the arc stability decreased dramatically as the water depth increased.Arc stability also decreases with the increasing of welding speed.The welding voltage has a great influence on arc stability and increasing the welding voltage appropriately will improve the arc stability.