Parametric study into erosion wear in a computer numerical controlled electro-discharge machining process

Experiments with different values of discharge current, pulse duration time and interval time in electro-discharge machining were conducted to investigate their effects on the material removal rate, surface quality and dimensional accuracy of the tool and product. Optimum pulse duration and pulse interval values in EDM that either produce the highest erosion rate or fine surface finish have been shown to have significant importance to the machining process.