Open AccessOptimization Design of Electrochemical Machining Process of SKD11 Tool Steel Using Weighted Principal Component Analysis (WPCA)
Author(s) -
Nuraini Lusi,
Dian Ridlo Pamuji,
Akhmad Afandi,
Galang Sandy Prayogo
Publication year - 2020
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/854/1/012024
Subject(s) - taguchi methods , machining , electrochemical machining , brass , orthogonal array , electrolyte , surface roughness , voltage , principal component analysis , materials science , tool steel , process (computing) , design of experiments , electrode , electrical discharge machining , mechanical engineering , metallurgy , composite material , computer science , engineering , mathematics , statistics , chemistry , electrical engineering , copper , operating system
This research was carried out on electrochemical machining (ECM) process using a workpiece material of SKD 11 tool steel and electrode of brass. Three process variables, i.e., voltage, electrolyte concentration and gap width with three levels for each process variables investigated. Based on the number of process variables and its level, an orthogonal array of L9 and two times replications employed in the design of the experiment. Setting a combination of significant machining parameters to maximize the material removal rate and minimize the surface roughness of the workpiece based on the results of optimization using the Taguchi method and weighted principal component analysis is a combination of voltage factors at level 3 of 48 V, electrolyte concentration at level 2 of 150 g/l, and gap width at level 1 of 1 mm. Machining parameter that has the greatest contribution is an electrolyte concentration which is 41.98%, then the contribution of voltage of 32.33%, and the gap width is 5.63%. Based on the results of confirmation experiments reveal that principal component analysis can effectively acquire the optimal combination of cutting parameters.