Investigation of Electrochemical Machining Using Nanosecond Voltage Pulse Packets

Abstract

The paper studies the electrochemical machining using packets of voltage pulses with the individual pulses from 10 to 100 ns, the interelectrode gap of 10 to 30 microns, the different duty cycle of pulses and various duty cycle of packages. Typical cyclograms of cyclic and pulse-cyclic machining for working conditions using and not using the flushing interelectrode gap are given. The simulation of the dimensional electrochemical machining process using nanosecond voltage pulses for the conditions of competition of the double electric layer charging and anodic dissolution of metal is performed. The local one-dimensional approximation is used in the simulation. The influence of the processes of charge of the double electric layer and anodic dissolution on the process parameters are shown. The change of anode potential depending on the voltage pulse number in the package and processing conditions is investigated. The influence of the duty cycle of the voltage pulses in the package on the residual charge of the double electric layer in the subsequent voltage pulses of the package is estimated. The ratio of processing time and flushing time is considered. The time of single flushing is estimated. Process performance evaluation is performed.