摘要
对三电极高速CO2双边角焊焊接工艺进行研究,通过LabVIEW电信号采集与高速摄影分析了焊接质量及过程稳定性.结果表明,焊接中引导电流应为最大,且引导焊枪与中间焊枪之间电流差距100A左右可获得理想的焊缝成形,中间焊枪与跟随焊枪的电流差距大小对焊接质量无明显影响,且焊枪指向位置在底板为宜.在同一工艺时,随着焊接速度增大,焊接过程变得不稳定,同一焊接速度时,试验电流400/300/300A组合时焊接过程最稳定.大电流组合时,应增大焊丝之间距离以减小电弧之间的干扰.
The effect of welding currents and welding speed on bead appearance and shape of triple-electrode high speed CO2 fillet welding on double sides was investigated. It was found that the current of leading electrode should be the highest,and current difference between leading electrode and middle electrode had better be 100A or above to obtain good weld quality. The current difference between middle electrode and trailing electrode don't play an obvious role in weld quality,and the electrode offset should be at flat plate. Welding process stability was analyzed through current and voltage acquisition signals characteristic parameters on LabVIEW and high speed photograph. It indicated that the voltage fluctuation increased with the increment of welding speed,the fluctuation by 400/300/300A combination is the lowest at the same welding speed,and the inter-wire distance should be increase to decrease the arc interference.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2010年第7期105-108,共4页
Transactions of The China Welding Institution
