With the application of pulse power technology in the ECM,the gap between the pole extremely reduced, the processing accuracy has improved significantly. ECM is due to the use of electrochemical corrosion in addition to dissolving the processing, metal ions to form are removed, theoretically can reach very high machining accuracy. And post-processing on the surface of the workpiece surface will not produce other special processing methods (such as electron beam, laser, EDM) from the heat affected zone of residual stress and defects. Therefore, be used microfabrication become an important research direction.
This paper analyzes the Micro-ECM principles and features of the Micro-ECM main factors,Discussion on the pulse power of the precision machining parameters and the relationship came to the conclusion : application of high-frequency, narrow width pulse power in the ECM processing is conducive to narrow the gap, enhance localized processing, Stray reduce corrosion, thereby increasing machining accuracy.
Designed and produced a nanosecond pulse power adjustable. Research and analysis of this power supply circuit waveform occurred, plastic circuit and power amplifier circuit theory, the power supply frequency. Duty cycle and pulse amplitude characteristics of the continuously adjustable to meet the general requirements of Micro-ECM wide applications in the future. Applications developed by the nanosecond pulse power for micro-electrochemical machining tests, the successful processing of out-micron level to achieve the desired goals. This suggests that the power of practical, stable and reliable.
大概改了下,有些术语和解释我真的不太清楚