Electrical Discharge Machining Process on Tungsten Carbide Using Copper Titanium-Nitride Electrode Materials

Tungsten carbide, commonly used as a cutting tool, has hard properties. However, being brittle makes the material difficult machining to shape. Therefore, the researcher tested the electrical discharge machining process on tungsten carbide using copper titanium-nitride electrode materials to study the creation of a copper titanium-nitride (Cu-TiN) composite electrode that went through the sintering process. The temperature 1,100 “°C” use a compression force of 180 “MPa” at different mixing ratios. that affects work efficiency in the electrolysis machining process of tungsten carbide, it was found that the copper titanium-nitride (Cu-TiN) electrode with a mixture ratio of Cu 80%, Ni 3%, TiN 17% had the highest hardness value of 100. 76. “HV”. It has the lowest electrical resistance value of 0. 39188 “Ω'cm” that allows electric current to flow through most easily than other mixture ratios. Including copper at a ratio of 1 00% and bonding of the neck growth. The bond between the particles was the best from the SEM test, so the researcher used a mixture ratio of Cu 80%, Ni 3 %, TiN 17% as the electrode in the EDM process on tungsten carbide workpieces. compare with 100% copper alloy electrode, using the efficiency factor by adjusting the current and the control variable values were kept constant in the same experiment of adjusting the on-time and adjusting the off-time. It was found that the MRR material removal rate of tungsten carbide materials among the electrode mixtures of Cu80%, Ni3%, Tin17%, it had the best removal value of 0. 0047 “g/min” and had the lowest surface roughness value on tungsten carbide workpieces at 1.787 “µm”.