It is indicated from the results that effected by the high frequency group pulse power, higher machining quality is obtained by choosing higher main pulse frequency.

Meanwhile, a new electrochemical machining power supply is introduced in detail-a power supply for high frequency group pulse electrochemical machining used in the micro-machining.

Investigates influences of pulses on the bottom gap, the side gap and the electrolyte flow field in ultra-short group pulses (UGP) electrochemical machining.