Abstract:

Electrochemical machining (ECM) can be used to achieve a desired workpiece surface. This machining method can be applied in principle to micromachining, precision finishing, and even to nano-fabrication. In order to develop green manufacturing and microfabrication, an innovative micro-electrochemical machining methodthe electrochemical machining in pure water (PWECM) was studied. Water dissociation accelerated with the function of a cation exchange membrane and an increase in current density. The ultrasonic vibration assistant was applied to PW-ECM. Process stability was ensured for reaction products from the zone of machining. In addition, anodic films were removed by electrolyte vibrating impact and cavitating for minus press after using the ultrasonic vibration.

Key words: electrochemical machining (ECM); pure water; cation exchange membrane; water dissociation