抄録
This paper discusses the electrode wear in electrical discharge machining (EDM) of carbon fiber reinforced plastics (CFRP) in order to clarify the mechanism of low electrode wear. Sinking EDM of CFRP using EDM oil or deionized water was carried out, and the electrode wear rate and the waveform of discharge current were measured. It is found that low electrode wear is realized in the case of EDM oil. The reason of this is carbon adhesion due to long pulse discharges. It is also found that when long pulse discharge does not occur, low electrode wear is also realized, because of increasing the gap length.
