Effect of micro-powder suspension and ultrasonic vibration of dielectric

fluidin micro-EDM processes—Taguchi

approachGunawan Setia Prihandana a,b,!, Muslim Mahardika b, M. Hamdi a, Y.S. Wong c, Kimiyuki Mitsui d

a Department of Engineering Design and Manufacture, University of Malaya, Lembah Pantai, Kuala Lumpur 50603, Malaysia

b School of Integrated Design Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

c Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore

d Department of Mechanical Engineering, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan

簡報人 :江柏翰指導老師 :戴子堯

outline

•1. Introduction•2. Experimental setup•3. Results and discussion•4. Conclusions

Introduction

This paper presents the effect of using micro-powder suspended indielectric fluid and ultrasonic vibration in micro-EDM processes,investigates the frequency of the sparks during machiningprocesses in pure dielectric fluid and powder suspended dielectricfluid, which had never been done by other studies in the samefield, and uses the Taguchi approach to determine the optimumprocess parameters to increase the material removal rate withoutdegrading its surface quality.

Experimental setup

Results and discussion

Conclusions• 1.MoS2加入加工液中，會分佈在電流的路徑中，可以游離 C 離子，可將孔洞加工得較平坦， MoS2具有高潤滑性，且可改善表面質量。

• 2.加工液以超音波振動可以增加材料的去除率，且可防止粉末沉積底部讓粉末可以在電極和工件流動