电弧电压是焊接电弧的主要参数之一。电弧电压值及其分布反映了电弧稳定性,焊条熔化率,也反映了熔滴过渡类型。但在统观的数据上,过去只能测定其平均值,或者定性地测定其摆动范围。这在某些研究工作中是很不够的。如在手工焊条研制中,少量药皮成分的改变引起的电压平均值变化是不大的,测定比较困难,因而只能增加配方次 Arc voltage is one of the main parameters of the welding arc. Arc voltage and its distribution reflect the arc stability, electrode melting rate, but also reflects the type of droplet transition. However, in the general view of the data, in the past can only determine the average, or qualitative determination of the swing range. This is not enough in some research work. As in the manual electrode development, a small amount of changes in the composition of the drug caused by the average voltage is not large, the determination is more difficult, which can only increase the number of formulations