Three-dimensional machining of insulating ceramics materials with electrical discharge machining

The insulating ceramics were processed with sinking and wire cut electrical discharge machining(EDM). The new technology was named as the assisting electrode method. In the machining, the electrical conductive material was adhered on the surface of insulating workpiece as the starting point of elect...

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Bibliographic Details
Published in:Transactions of Nonferrous Metals Society of China 2009-09, Vol.19 (z1), p.s150-s156
Main Authors: FUKUZAWA, Yasushi, MOHRI, Naotake, GOTOH, Hiromitsu, TANI, Takayuki
Format: Article
Language:English
Subjects:
assisting electrode method
Carbon
Ceramics
Electric discharge machining
Electrical discharge
electrical discharge machining
Electrodes
insulating ceramics
Machining
Silicon nitride
Workpieces
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Summary:The insulating ceramics were processed with sinking and wire cut electrical discharge machining(EDM). The new technology was named as the assisting electrode method. In the machining, the electrical conductive material was adhered on the surface of insulating workpiece as the starting point of electrical discharge. As the processing operated in oil, the electrical conductive product composed of decomposition carbon element from working oil adhered on the workpiece during discharge. The discharges generated continuously with the formation of the electrical conductive layer. So, the insulating ceramics turn to the machinable material by EDM. We introduced the mechanism and the application of the machining of insulating ceramics such as Si 3N 4 and ZrO 2.
ISSN:1003-6326
DOI:10.1016/S1003-6326(10)60263-4