交流脉冲MIG焊其焊缝熔深及焊丝熔化速度不仅与焊接电流有关，而且与负极性比率有关。
Weld penetration and wire melting speed of AC PMIG welding not only have relationship with welding current but also with electrode negative ratio.
文中给出的算例表明，适当控制通入的电流强度，可以达到有效控制裂尖熔化区尺寸以及形成焊口的目的。
If a current with proper intensity has been switched on, the goal of controlling the melting and welding dimension effectively around the crack tip can be obtained.
研究表明，双电极焊条两焊芯熔化的一致性受焊条类型、接电流等因素的影响。
The melting consistency of two cores is influenced by electrode type, welding current etc.
为此，本论文研究了焊丝熔化速度的影响因素，并以高速摄像为手段研究了旋转射流过渡临界电流值的影响因素。
The influencing factors of wire molten rates are studied, and the critical current of rotating spray transfer mode is also studied by using high-speed motion analyzer.
为此，本论文研究了焊丝熔化速度的影响因素，并以高速摄像为手段研究了旋转射流过渡临界电流值的影响因素。
The influencing factors of wire molten rates are studied, and the critical current of rotating spray transfer mode is also studied by using high-speed motion analyzer.
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