Non-conventional machining processes as viable alternatives for production with specific reference to electrical discharge machining

Abstract

The so-called non-conventional machining techniques can no longer be called 'non traditional', since they have wide range of applications. Electrical Discharge Machining (EDM) is one such technique, which so far was limited to tool room work for die and mould making. The inflow of high technology and products has produced phenomenal changes in the technological environment. Industries, which have to enter the critical phase of competition in the global market for their products, require the advancement in non-conventional machining process to meet the challenges. This paper describes progress with respect to present situation and future trends in non-conventional machining, particularly, about the Electrical Discharge Machining to review extensively what has been done in the past. It is basically a critical assessment of the present state-of-art of the wide and complex field of non-conventional machining, based on the information obtained from the relevant literature, industry, and discussion at seminar and conferences. This is also illustrated by several specific examples. Some recent developments and new trends are highlighted. Some of these techniques can be competitive with conventional manufacturing methods. In some of the cases they are the only efficient solution for realizing the specific industrial products.