Based on the technology of rotating impeller DE gassing in aluminum alloy melt, the effect of pulse gas current on the gas bubble size by studied with the water modeling method.

在铝合金熔体净化旋转喷吹技术的基础上，采用水力模拟实验研究了脉冲进气方式对气泡大小的影响。

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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.

单片机对焊接电流、电弧电压、电流给定、脉冲周期、占空比、基值电流、收弧电流衰减时间、前气和后气时间等焊接参数进行采样、计算和控制。

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The gas switch with coaxal field distortion electrodes used in type DPF-300 current pulse discharge system is introduced.

介绍了为D PF - 300型脉冲电流源同步放电系统研制的同轴型场畸变火花开关。

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