Experimental investigation to improve metal removal rate (MRR)‎ and surface roughness in electrochemical machining

Abstract EN

Electrochemical machining (ECM) is a non-traditional machining proc ess which is the controlle d removal of me tal by anodic dissolution in an electroly tic cell in which the workpiece is the anode and the tool is cathode.

In ECM, metal removal rate (MRR) takes place due to atomic dissolution of work mate rial.

Elec trochemical dissolution is governed by Faraday ’s laws.I n this study the ECM is used to remove metal from the internal hole of the workpiece from aluminum alloy using NaCl solution.

The rates of improvement in MRR are (6.48, 1.81, 3.74, 13.24, 3.11) % for curre nt densities of (2.82, 4.24, 5.65, 7.07, 8.48) A/cm 2 respec tive ly , when compared with the stationary tool, and the rotating electrode gives bette r surface finish than the stationary e lec trode, were the enhancement rates in roughness are (7, 31.72, 7.91, 15.49, 1.34)% for current density values of (2.82, 4.24, 5.65, 7.07, 8.48) A/cm 2 respectively .