An Investigation into Surface Roughness of EDM Using Soft Particles Suspension in Silicone Oil |
| Journal |
Key Engineering Materials (Volumes 389 - 390) |
| Volume |
Advances in Abrasive Technology XI |
| Edited by |
Tsunemoto Kuriyagawa, Libo Zhou, Jiwang Yan and Nobuhito Yoshihara |
| Pages |
430-435 |
| DOI |
10.4028/www.scientific.net/KEM.389-390.430 |
| Online since |
September, 2008 |
| Authors |
Yao Yang Tsai, Chih Kang Chang |
| Keywords |
Abrasive, Hard Particle, PMDEDM, Polymer, Soft-Particles |
| Abstract |
Electrical discharge machining (EDM) is an excellent technology to machining die and
mold, but it is uneasy to obtain mirror-like surface. Powder-Mixed dielectric electrical discharge
machining (PMD-EDM) is the innovative technology of EDM process, which can improve the
quality of machined surface and applied in EDM finish machining now. The powder is usually hard
particles, such as Al, Cu, Cr and Si in PMD-EDM. This paper presents a new research of PMD-EDM
with suspending soft particles and abrasive grits in the dielectric fluid, especially focus on surface
roughness. Experimental result shows the EDM process with polymer particles and abrasive grits can
be carried out in silicone oil and the surface roughness has the finer improvement when increasing the
rotation speed. Also, the effect of hard particles suspending in dielectric fluid are also discussed and
compared. The surface roughness using polymer particles and abrasive in specific condition was
better than only hard particles in silicone oil. Moreover, mixing abrasive and polymer in EDM can
perform the polishing process. |
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