【摘要】 一脉一滴是GMAW-P焊最理想的一种过渡形式。为了获得这种过渡形式,需要焊接脉冲波控参数之间的良好配合。结合仿真与试验研究,从能量的观点研究了在后中值波形控制方法中两个关键脉冲参数——中值时间和中值电流对GMAW-P焊的影响。试验表明,当设置适当的中值电流和中值时间时,能向熔滴过渡过程提供合适的能量,有利于实现一脉一滴,熔滴过渡过程的可控性好,焊接过程稳定,焊缝质量好。更多还原

【Abstract】 The one droplet per pulse transfer in GMAW-P is the most favorable transfer mode for its high welding quality.To obtain this droplet transfer mode,the pulse waveform control parameters should be matched perfectly.Combine with simulink analysis and experiment,the effects of the two key parameters of(median time,median current)of the backward median current waveform control method is studied from the view of energy.The results indicate that when the backward median current value and time is set suitably,a suitable energy can be supplied for the droplet transition which is good for the one droplet per pulse transfer.The process can be with good controllability of the transition,stable welding process and high welding quality.更多还原