A Brief Note On Electrical Discharge Machining ( Edm )

CHAPTER 2 2. LITERATURE SURVEY 2.1 Introduction Literature review is one of the scope studies. It works as guide to run this analysis. From the early stage of the project, various literature studies have been done. Research journals, books, printed or online conference article were the main source in the project guides. Literature review section work as reference, to give information and guide base on journal and other source in the media. We are broadly classified all the paper into five different category, i.e. paper related to Electrical discharge machining (EDM), material related (workpiece or tool), some paper related to the effect of input parameters on (MRR,TWR and SR), dielectric fluid and the effect of flushing. 2.2 Electrical discharge machining (EDM) It is a process that is used to remove metal through the action of an electrical discharge of short duration and high current density between the tool and the workpiece [18-19]. (EDM) is a non-traditional type of precision processing using an electrical spark-erosion process between the electrode and the working piece of electrically conductive immersed in a dielectric fluid [20]. Since it has more special gains, the (EDM) has been widely applied in modern metal industry for producing complex cavities in moulds and dies, which are difficult to manufacture by conventional machining. The use of (EDM) in the production of forming tools to produce plastics mouldings, die castings, forging dies etc., has