NDLI: Comparative Study for Tool Wear Rate in EDM Using Tool of Graphite , Copper & Silver

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Comparative Study for Tool Wear Rate in EDM Using Tool of Graphite , Copper & Silver

Content Provider	Semantic Scholar
Author	Santoki, Priyesh N. Bhabhor, Prof. Ashwin P.
Copyright Year	2015
Abstract	The electrical discharge machining (EDM) is one of the latest non-traditional machining processes, based on thermoelectric energy between the workpiece and tool. In this machining process, the material is removed electrothermally by a series of successive discrete discharges between two electrically conductive materials (tool and workpiece). The performance of the process, to a large extent, depends on the tool material, workpiece material & manufacturing method of the tool. A suitable selection of tool can reduce the cost of machining. The performance of EDM is find out on the basis of Tool Wear Rate (TWR), Overcut (OC), Material Removal Rate (MRR) and Surface Roughness (SR). The important machining parameters of EDM which affecting on the performance parameters are discharge current, pulse on time, pulse off time, arc gap, flushing pressure, voltage and duty cycle. Taguchi design of experiments is used to conduct experiments by varying the parameters current, pulse on time and pulse off time. The process performance is measured in terms of Tool Wear Rate (TWR). In this research EDM experiment using Graphite, Copper & Silver tool & AISI 304 Stainless Steel workpiece has been done for optimizing TWR and reducing cost of manufacturing. Finally it is found that the graphite tool is more suitable. In certain characteristics silver tool gives better performance but the cost becomes high for machining so keeping in mind cost and other some characteristics a copper tool is more suitable than silver tool. The experimental results indicate that the current significantly affects the TWR followed by pulse on time & pulse off time. Keywords— Electrical Discharge Machining, MRR, OC, SR, TWR
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.ijemr.net/DOC/ComparativeStudyForToolWearRateInEDMUsingToolOfGraphiteCopperAndSilver(314-321).pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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