Application of electrical discharge machining for machining of semi-conductor materials

In recent years, the research work in material science has encouraged thedevelopment of advanced ceramic materials. boron carbide has many applications inindustries for manufacturing of products such as water jet nozzle and abrasive particles.in this paper several experimental tests have been conducted to study the eect ofprocess parameters in machining of boron carbide b4c by using the electrical dischargemachining process edm. the eect of voltage variation, current intensity, on-pulse ando-pulse durations on surface roughness (ra) and material removal rate (mrr) werestudied simultaneously by utilizing the design of experiment (doe) technique. thisresearch work indicated that the edm process can be used to machine semi-conductormaterials such as b4c successfully. in addition, it was found that, the quantity ofmaterial removal rate and the quality of workpart surface roughness could be aected bythe variations of these process parameters. finally, the experimental results obtained werecompared with the published results reported by other scientist, and a good agreement wasfound between them.