A Review of Flushing Techniques Used in Electrical Discharge Machining

Abstract

Flushing is a very important function in any electrical discharge machining (EDM) operation. It not only serves to remove the eroded debris from the spark-gap region but also has various other functions which highly influence the outcome of this machining process. Although the influence of flushing as a wholesome requirement on the efficiency and stability of machining conditions in EDM has been extensively investigated, little has been reported concerning the effects of the various individual flushing techniques that are available in the industry. An examination of the influence of flushing pressure and a review of the various flushing approaches utilized is presented in this paper.