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前言对熔化极气体保护焊来说,焊接质量主要决定于电弧燃烧的稳定性和金属熔滴过渡特性。影响电弧稳定性和熔滴过渡特性的因素很多,从电弧本身来说,主要取决于弧柱及近电极区的有关电热过程}此外还决定于电源通过特定电路对电弧的供电情况(如不同的电源特性、电路各参数等)以及电弧放电的物理条件,诸如电极性质、保护介质
Foreword For MIG welding, the welding quality depends mainly on the stability of the arc combustion and the metal droplet transfer characteristics. There are many factors which affect the stability of the arc and the characteristics of the droplet transfer. From the arc itself, it depends mainly on the electric heating process of the arc column and the near electrode region. In addition, it depends on the power supply of the arc through the specific circuit (such as different Power supply characteristics, circuit parameters, etc.) and the physical conditions of the arc discharge, such as the nature of the electrodes, the protective media