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四、脉冲镀金脉冲电镀实际上是用很高频率下的间断直流进行电镀。频率可达到1000HZ,通电时间为100微秒,断电时间1000微秒。峰值电流可达平均电流的10～12倍。推荐采用方波、其它波形也用过、只有方波最好、而且频率越高效果越好。单相半波频率低、最高不会超过100HZ。实际使用的方波是带有圆角的(如图10),如果是真正的方波就会出现突出的尖峰,比峰值电流可以大10倍,造成尖端放电现象使镀液遭到破坏。同时在断电时会出现反向峰,使电极
Fourth, pulse gilded pulse plating is actually using a very high frequency of intermittent DC plating. Frequency up to 1000HZ, power on time of 100 microseconds, power off time of 1000 microseconds. Peak current up to 10-12 times the average current. It is recommended to use square wave, other waveforms are also used, only the best square wave, and the higher the frequency the better. Single-phase half-wave frequency is low, the maximum will not exceed 100HZ. The actual square wave is rounded (Figure 10). If it is a true square wave, a prominent spike will appear, which is ten times larger than the peak current, causing the tip discharge to destroy the bath. At the same time there will be reverse peak power, so that the electrode