Table 5: Processing parameters of multimaterial electrodes for EDM.

ItemsParameters

Workpiece materialDie steel
Multimaterial electrodesIron and copper; copper and copper-tungsten; brass and copper
Machining polarityNormal
Thickness of workpiece (mm)4
Pulse on time, Ton (s)12.5
Pulse interval time, Toff (s)7.5
Breakdown voltage, Ub (V)45
Peak current, Ip (A)0.8
Diameter of cylindrical electrode (mm)2
Machining time, t (s)3.0
DielectricDeionized water