Investigation of micro-drilling in AISI H13 steel using ECMM under distinct electrolytes-finding optimal setting

Abstract

ABSTRACT Using an unconventional micro-drilling technique called electrochemical micro-machining (ECMM), one can make intricate geometrical patterns on extremely hard, electrically conducting and low thermal diffusing surfaces. AISI H13 tool steel is an exceptional corrosion-resistant steel because it has roughly equal proportions of austenite and ferrite. In this investigation, ECMM method is employed to drill holes in AISI H13 steel with the help of copper as electrode material with three distinct electrolytes (NaCl, NaNO3 and NaClO3). To forecast the response values and deviation in experimental trials, RSM and ANN were utilized. In addition, to identify the crucial factors affecting the surface quality features, the COPRAS technique and ANOVA were used. With the use of response surface plots, the effects of process variables on, material removal rate, surface roughness, and overcut were studied. The confirmation test was used to evaluate the best parameter settings (Electrolyte-NaNO3, electrolyte concentration-30 g/liter, and feed rate-0.6 mm/min for copper electrode).