研究１．２ｍｍＨ０８Ｍｎ２ＳｉＡ焊丝在富氩保护气体保护下进行脉冲ＭＡＧ焊过程中，当选用的脉冲峰值电流高于形成轴向喷射过渡与旋转喷射过渡临界电流值时，随着脉冲能量的增大，将使熔滴过渡特征产生规律性变化，同时也导致电弧形态与焊缝成形呈现明显的改变。本研究成果对推广和选用脉冲ＭＡＧ焊有重要参考价值 Study 1.2mmH08Mn2SiA wire in the process of pulse MAG welding under the protection of argon-rich shielding gas, when the pulse peak current used is higher than the critical current value of the axial jet transition and rotary jet transition, with the pulse energy increases, Will make the droplet transition characteristics produce regular changes, but also lead to the arc shape and weld formation showed a significant change. The results of this research have important reference value for the popularization and selection of pulsed MAG welding