Electric Discharge Machining with Graphene Reinforced Aluminium Metal Matrix Composite (Gr Al MMC) Tool for EN 31 Die Steel Work Piece

作     者：Mondal, Subrata Paul, Goutam Mondol, Koustov Mondal, Subhas Chandra 

作者机构：University of Engineering and Management WB Kolkata India Indian Institute of Engineering Science and Technology Howrah WB Shibpur India 

出 版 物：《Journal of The Institution of Engineers (India): Series C》 (J. Inst. Eng. Ser. C)

年 卷 期：2025年第106卷第2期

页      面：541-551页

核心收录：

学科分类：12[管理学] 080602[工学-钢铁冶金] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 0709[理学-地质学] 070901[理学-矿物学、岩石学、矿床学] 0806[工学-冶金工程] 08[工学] 0802[工学-机械工程] 

基　　金：No funding was received to assist with the preparation of this manuscript 

主　　题：Metallic matrix composites 

摘      要：The addition of graphene to aluminium (Al) matrices has garnered significant attention for machining operations and EDM toolmaking. In this study, the primary objective was to explore the behaviour of Graphene-reinforced Al metal matrix composites (Gr-Al MMCs) during the EDM process when used as tool material on EN 31 die steel workpiece. Gr-Al MMCs was prepared using powder metallurgy, with graphene incorporated in three different compositions (0.5%, 1%, and 1.5% by weight), along with copper (5% by weight) and silicon carbide (2% by weight). These materials were processed using the Taguchi L9 orthogonal array into cylindrical shapes of 19 mm in length and 10 mm in diameter, forming nine different samples. Each of the sample was employed in experimentation for every run of the EDM die sinking operation, utilizing the above tool-workpiece combination. SEM images were taken using a Scanning Electron Microscope (HITACHI S-3400 N) which shows micro voids and recast layers in the microstructure of the tool and the workpiece. By employing Taguchi L9 design of experiments and Signal to Noise ratio analysis, optimal EDM parameters were identified: low current-Ip (1 amp), medium pulse-on time-Ton (75 µs), and low gap voltage-Sv (30 V) for minimum tool wear, while a medium gap voltage (40 V) yielded maximum Material Removal Rate (MRR). © The Institution of Engineers (India) 2025.