摘要
介绍了水下焊接的发展现状和脉冲MIG焊接的特点,详细介绍了高压焊接试验系统,主要研究了在0.1～0.7MPa的空气环境中(即60m水深范围内)脉冲MIG焊电弧形态的变化及其规律。通过大量试验证明,随着环境压力的增大,电弧会出现一定程度的压缩,焊接电流增大也会导致弧长变短,而适当提高电弧电压可以有效解决弧长压缩的问题。试验结果同样表明,脉冲MIG焊应用于60m水深范围内是可行的。
It was introduced that the current development state of the underwater welding and the features of the pulsed MIG welding in the paper,and detailed high pressure welding test system, and mainly discussed the changes and rules of arc shape for pulsed MIG welding under 0.1~0.7 MPa pressures air environment (which meant within the water depth of 60 m). It was proven through large amount of experiments that the arc would be compressed to a certain degree with the increase of environmental pressure,and increase of the welding current would also cause the arc length to be shortened,but the problem of arc length compression could be improved effectively by increasing the welding voltage properly. The results also showed that it was feasible to apply the pulsed MIG welding within 60 m of water depth.
出处
《焊接技术》
北大核心
2010年第10期7-10,共4页
Welding Technology
基金
国家高技术研究发展计划(863)重大项目(2002AA602012)
国家自然科学基金资助项目(40776054)
北京市新世纪百千万人才工程培养经费资助
