Performance Study on Electro Chemical Machining of High Hardened Steel

Electrochemical Machining (ECM) is a non-traditional process used mainly to cut hard or difficult to cut metals, where the application of a more traditional process is not convenient. This work shows study of the effect of Sodium Nitrate solution (NaNO₃) on Material Removal Rate (MRR), Surface roughness and Overcut of high hardened die steel by ECM. In addition to analyzing the effects of influencing factors on High hardened die steel for finding the optimum parameters, four different process parameters were undertaken for this study; applied voltage, tool feed rate, electrolyte discharge rate and three types of electrolyte solution. The effects of NaNO₃ aqua solution on the work piece are studied and the relationship among the variables have been determined for achieving maximum MRR and minimum surface roughness and overcut. NaNO₃ aqua electrolyte solution presented the better results of the MRR, surface roughness, and overcut in electrochemical machining of high hardened die steel.