A power supply creates high-frequency electrical pulses across a tiny gap (0.005 mm to 1 mm) between a tool electrode and the workpiece.
The process occurs within a —typically hydrocarbon oil or deionized water—which acts as both an electrical insulator and a coolant. Electrical discharge machining
Between sparks, the dielectric fluid flushes away the eroded particles (debris) to prevent short circuits and prepare the gap for the next discharge. Main Types of EDM Electrical Discharge Machining (EDM) - Beltim & Associates the dielectric fluid ionizes
When the voltage reaches a "breakdown" point, the dielectric fluid ionizes, forming a plasma channel. The resulting sparks generate localized temperatures between 8,000°C and 12,000°C , vaporizing the material. 000°C and 12