Özet:

In this study, metal was removed by electro erosion processing method using Copper Chromium Zirconium Alloy Electrode from Sleipner Cold Work Tool Steel with 60-62 HRC hardness value. In this context, experiments were carried out using three different discharge currents (6,25; 12,5; 25 A), three different pulse on times (3; 6; 9 µs), three different pulse off times (4; 6; 8 µs). The effects of the used processing parameters on the fundamental performance outputs such as surface roughness, kerf angle, processing time were determined by analytical measurements and macro analysis. As a result of the analysis, the processing time increased significantly with the increase in the pulse off time and decreased with the increase of the working current and pulse on times. The increase in the working current increased the spark between the workpiece and the electrode, increasing the point melting and evaporation, as a result of which the surface roughness increased. The electrode was worn out due to the effect of the low pulse on time and high pulse off time parameters, as it worked more per unit time, as a result of this wear, the average kerf angle increased. As a result of the % 100 and % 300 increase in the discharge current, the average surface roughness increased by % 62 and % 87, respectively. Failure to evacuate debris and residues caused by wear of both the workpiece and the electrode material during EDM or sticking to electrode tips were caused irregularity in the processing time, surface roughness and kerf formation due to electrode wear.

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