摘要
采用前中值电流波形控制方法可以实现对熔滴过渡过程的控制。首先从熔滴过渡过程能量传递的角度,利用Simulink工具对脉冲波形和能量进行了仿真,然后利用所研制的熔化极脉冲气体保护焊设备进行了前中值波控试验,并与仿真结果相结合,从能量的角度深入分析了中值时间和中值电流对熔滴过渡过程的影响。结果表明,采用前中值波形控制方法,通过设置合理的中值时间和中值电流,有利于控制熔滴的长大和过渡,实现一脉一滴过渡,焊接质量好。
A thorough research on the forward median current waveform control method was carried out. Firstly, from the angle of the energy delivery at the droplet transition, the Simulink tool was used to carry on imitating and analyzing the pulse waveform and pulse energy. On this foundation, a novel GMAW-P equipment was developed to carry on the craft experiments, and the imitating results were verified, in the mean time from the angle of energy, the effects on the droplet transfer of the forward current value and the forward current time were studied in depth. The results indicate that by setting suitable forward median current value and forward median current time, the forward median current waveform control method can reach good controllability of the droplet growth and transition, and can achieve one pulse one droplet transfer and perfect welding quality.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2007年第1期83-86,共4页
China Mechanical Engineering
基金
国家自然科学基金资助项目(50375054)
