Published Paper Details:

Among recently developed non-conventional machining techniques, Electro Discharge Machining (EDM) is one of the most widely used methods for ''hard to machine'' materials such as heat-treated tool steel and other ''hard-to-machine'' materials, such as ceramics and hastelloy, nitralloy, nemonic alloys, carbides, and heat-resistant steels. To remove electrode material, EDM uses high-frequency sparks between the tool and the workpiece. The EDM process's material removal rate (MRR), tool wear rate (TWR), and surface integrity are three of its most important performance metrics. The goal of EDM is to produce a machined component with an excellent surface quality while also achieving a high MRR. Machining parameter settings that yield the highest MRR are directly related to surface area, which has become an essential problem in the approaching widespread use of AISI P20 in the manufacturing industry. To make injection molding tools, the tooling industry uses AISI P20 steel. Because of their higher strength and hardness, these steels are classified as ''difficult to process.'' materials. Because of this, standard and non-traditional machining of AISI P20 steel is known to provide significant difficulties. As a result of these considerations, an experiment was conducted to examine the EDM surface's productivity, quality, surface integrity, and accuracy. Working with an AISI P20 steel work-piece and copper electrode, the research was conducted. Discharge current (Ip), time on pulse (Ton), time off pulse (Toff), time up lift (Tup), and time on work (Tw) are just a few of the important machining characteristics that will be examined. MRR, TWR, Surface Roughness (SR), Micro hardness (MH), and the influence of machining settings on these responses were studied.