Improved methodology for calculating the processes of surface anodic dissolution of spark eroded recast layer at electrochemical machining with wire electrode

Abstract

The wire electro discharge machining (WEDM) process produces surfaces that require some kind of finishing operation. The precision electrochemical machining is one of techniques used mainly to improve the steels’ appearance. It is also desirable to remove the white uppermost recast layer (produced by the WEDM process) so as to improve the surface functional performance. The paper develops a mathematical model for wire electrochemical machining and employs this model in the experimental validation of the modified layer anodic dissolution processes. The effected comparison of experimental and calculated data for the first time allows specifying  the numerical values of the electrochemical dissolution rate as to surface layers of steel obtained under different conditions of electrical discharge machining. The results obtained contribute to the extended practical implementation of the combined technologies when wire electro discharge and wire electrochemical machining. consecutively applied.