Open AccessInvestigation of powder mixed electrical discharge machining and process parameters optimization using Taguchi based overall evaluation criteria
Author(s) -
M. Ashok,
T. Niranjan,
S. Chokalingam,
B. Singaravel
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1057/1/012075
Subject(s) - electrical discharge machining , materials science , liquid dielectric , taguchi methods , dielectric , machining , process (computing) , electrode , orthogonal array , composite material , metallurgy , computer science , optoelectronics , chemistry , operating system
Electrical Discharge Machining is a type of nontraditional process can be used for machining of hard materials and making of complicated shape.In EDM, the important parameters are tool, workpiece and dielectric liquid. Dielectric liquid is used to enhance ionization during the process. Powder Mixed EDM (PMEDM) is preferred for enhance the process efficiency. In this work, nano alumina (Al2O3) powder is added to the dielectric liquid and the process parameters effects are investigated. Input parameters considered are pulse on time, pulse off time and current. Output parameters considered are rate of material removal, surface quality and wear in electrode. Nano powders are mixed in the ratio of 2% to the EDM oil during the operation with dielectric fluid weight ratio. Process parameters are optimized using Taguchi based Overall Evaluation Criteria (OEC). The result revealed thatPMEDM is enhanced the process efficiency.