Effect of micro MoS₂ powder mixed dielectric fluid on surface quality and material removal rate in micro-EDM processes

抄録

Efficiency is currently becomes the main problem in μ-EDM processes. To have high efficiency in μ-EDM processes means that the workpiece machined is not only having good surface quality but also need to have high material removal rate during the machining process. In order to increase the efficiency in μ-EDM processes, micro MoS₂ powder mixed dielectric fluid is proposed as one of the solution. This study investigated the effect of micro MoS₂ powder mixed dielectric fluid with focusing on obtaining good surface quality and higher material removal rate. It was observed that by suspending micro MoS₂ powder can produce better surface quality by removing black spot in the center of surface machined. The better in surface quality also followed by increasing in material removal rate up to 70 % in certain of combination of tool electrode and workpiece material.