Research on Pulse Electrochemical Finishing

摘要

Top-quality surfaces are obtained by means of pulse electrochemical finishing (PECF) in neutral electrolyte. The rules of effect of experimental parameters such as electrolyte concentration, pulse current density, electrolyte flow rate, interelectrode gap, cathode scanning velocity and chemical composition of spices materials on surface quality are analyzed based on the experiments in detail. Moreover, the optimal parameters are determined. Taking stainless steel for example, a mirror-like surface could be gained by PECF and the surface roughness value could be reduced from more than Ra 0.8 μ m to less than Ra 0.04 μ m within 1 ～ 2 seconds. The experiments show that PECF will play an important role in finishing key parts in the modern manufacturing industries.