Improvement of process performance of powder mixed electrical discharge machining by optimisation -A Review

ABSTRACT

Electrical discharge machining (EDM) is the most efficient and prevalent advanced machining process for difficult to machine materials, such as superalloys, composite materials, and heat-resistant steels. The efficiency of the machining process is measured in terms of material removal rate, surface roughness, and tool wear rate. The downsides of EDM are its relatively low removal rate (MRR), comparative poor surface finish, and excessive tool wear ratio (TWR). To overcome the aforementioned issue, powder mixed electrical discharge machining (PMEDM) is a dependable method for increasing EDM performance. This paper reports on recent work on the evolution of PMEDM and the effects of process parameters as well as an optimisation on machining performance. The paper also discusses the year-wise research work carried out by various researchers using EDM on different materials using various optimisation techniques.

KEYWORDS:

• Powder mixed electrical discharge machine
• material removal rate
• tool wear rate
• heat-affected zone
• surface roughness
• optimisation

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability statement

Data sharing is not applicable to this article as no new data were created or analyzed in this study.