Abstract
Solutions are needed for increasing the material removal rate without degrading surface quality in micro-electrical discharge machining (μ-EDM). This paper presents a new method that consists of suspending micro-MoS2 powder in dielectric fluid and using ultrasonic vibration during μ-EDM processes. The Taguchi method is adopted to ascertain the optimal process parameters to increase the material removal rate of dielectric fluid containing micro-powder in μ-EDM using a L18 orthogonal array. Pareto analysis of variance is employed to analyze the four machining process parameters: ultrasonic vibration of the dielectric fluid, concentration of micro-powder, tool electrode materials, and workpiece materials. The results show that the introduction of MoS2 micro-powder in dielectric fluid and using ultrasonic vibration significantly increase the material removal rate and improves surface quality by providing a flat surface free of black carbon spots.
Original language | English |
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Pages (from-to) | 1035-1041 |
Number of pages | 7 |
Journal | International Journal of Machine Tools and Manufacture |
Volume | 49 |
Issue number | 12-13 |
DOIs | |
Publication status | Published - Oct 2009 |
Externally published | Yes |
Keywords
- Material removal rate
- Micro-electric discharge machining
- Micro-powder suspended in dielectric fluid
- Taguchi method
- Ultrasonic vibration of dielectric fluid