Research on Technique of Pulse Electrochemical Surface Finishing

Pulse electrochemical surface finishing is an anodic dissolution process of metal as anode ion by ion, easily realizes surface finishing. Because of using high frequency short pulse current, the flowing field, electrical field and electrochemical behavior inside the inter-electrode gap have been improved obviously. So it can use less inter-electrode gap, and finally leads to improving surface finishing quality, efficiency and ensuring machining accuracy. Another interesting aspect of it is the availability of several electrical parameters such as pulse current density, pulse time, and duty cycle for process optimization. In this paper, Pulse electrochemical finishing (PECF) and pulse electrochemical compound finishing (PECCF) are introduced. The main technical parameters, including in inter-electrode gap, current density, compositions of steel materials and pulse parameters on the resulting surface finish were investigated. PECF and PECCF on different surface including plane and shaft´s surface are introduced. Well-pleasing experimental results is gained.