The welding current, arc voltage, preset current, the period and ratio of pulse, base current, down slope time, gas pre and post flow time are sampled, calculated and controlled by microprocessor.
The results show that the relations between the excitation temperature and arc dischargable post under different current and different electrode gap.
在电极间隙增大时电弧放电柱放大而激发温度升高。
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It has also been found that diffused vacuum arcs with a high current gives a low post-arccurrent and that the limitation to the breaking capacity for dif…