Abstract
Concerning about the pulsed current discharge in water which used for rough machining process of wire electric discharge machining, we performed measurements of single pulsed arc voltage, observed the developing process of arc discharge by using ICCD camera and examined discharge crater dependence on the discharge current. Based on these result of measurements of transient arc phenomena, we constructed a simple discharge model of arc plasma extension. As a result, we proposed the optimal pulsed discharge current under various processing conditions to improve the machining performance for Wire-EDM. The analysis of the pulsed arc discharge phenomena will form the basis of technology for realizing high-performance drive control schemes for Wire-EDM.
