No abstract

Wire electrical discharge machining (WEDM) is well known process for machining hard materials, Development of empirical model has been a major activity in metal cutting research. This paper presents an application of central composite face centered design for developing surface roughness model in WEDM of AISI 52100 steel. Four process parameters namely Pulse on time, Pulse off time, Water pressure and Wire feed are considered as input parameters. Each parameter was set at three levels. Based on the experimental data, a mathematical model in terms of process parameters was developed for surface roughness using multiple linear regression. Confirmation tests were performed to verify the predictability of the developed model.