Investigation of the Effects of EDM Parameters on Surface Roughness

Authors : Serkan YAMAN, Orhan ÇAKIR

Pages : 46-54

View : 14 | Download : 21

Publication Date : 2020-06-01

Article Type : Research Paper

Abstract :In this experiment a novel machining methodology is presented for hardened powder tool steel insert ignore into journalissuearticles values(PMD23); which has better mechanical properties than conventional high speed steels. Electric discharge machining insert ignore into journalissuearticles values(EDM); is a non-traditional method that mainly used for extremely hard and complex shaped metals which is very difficult to machine with conventional methods. Effects of the electric discharge machining on surface roughness insert ignore into journalissuearticles values(Ra); and material removal rate insert ignore into journalissuearticles values(MRR); is experimentally studied. The selected machining parameters were current insert ignore into journalissuearticles values(12, 16 and 20A);, pulse on time insert ignore into journalissuearticles values(600, 400, and 200µs); and time interval insert ignore into journalissuearticles values(400, 200 and 100µs);. Changes on the EDM parameters result in the changes in the surface roughness and material removal rate, higher values of current, pulse on time and time interval increased the Ra and MRR.
Keywords : EDM, Tool Steel, Machining Parameters, Surface Roughness, Material Removal Rate