Article ID Journal Published Year Pages File Type
7119413 Materials Science in Semiconductor Processing 2015 6 Pages PDF
Abstract
This paper studies the discharge characteristics of metal and semiconductor processing by WEDM, proves single-channel discharge in metal EDM and finds multi-channel discharge phenomenon in semiconductor EDM. The mechanism has been analyzed in this paper. The main reason for multi-channel discharge is the existence of body resistor and contact barrier; thus, there still exists a high potential difference between the electrode wire and the surrounding area of discharge points after the dielectric breakdown, and this potential difference can form a second discharge. The effects of multi-channel discharge on the processing efficiency of semiconductor EDM are also studied. The energy of each discharge channel is roughly equal, and thus the multi-channel discharge at the same time can increase the energy utilization ratio of the pulsed power supply and improve the processing efficiency.
Related Topics
Physical Sciences and Engineering Engineering Electrical and Electronic Engineering
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