Abstract
The effects of electrical discharge machining (EDM) parameters on drilled-hole quality such as taper and surface finish are evaluated. Microwave-sintered magnesium nano composites (reinforced with 0.8 and 1.2 wt.% of nano alumina) are used as work materials. Experiments were conducted using Taguchi methodology to ascertain the effects of EDM process parameter. The process parameters such as pulse-on time, pulse-off time, voltage gap, and servo speed were optimized to get better surface finish and reduced taper. ANOVA analyses were carried out to identify the significant factors that affect the hole accuracy and the surface roughness. Confirmation tests were performed on the predicted optimum process parameters. Pulse-on time and the servo speed are identified as major response variables. Micro structural changes and the effects of nano particle reinforcement in the drilled hole were studied through SEM micrographs.
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References
Dr.-Ing. Adolf Beck, E.H. (1940) The technology of magnesium and its alloys, Hughes, London
Hassan SF, Gupta M (2002) Development of a novel magnesium-copper based composite with improved mechanical properties. Mater Res Bull 37:377–389
Mayencourt C, Schaller R (2002) Mechanical-stress relaxation in magnesium-based composites. Mater Sci Eng A325:286–291
Ho KF, Gupta M, Srivatsan TS (2004) The mechanical behavior of magnesium alloy AZ91 reinforced with fine copper particulates. Mater Sci Eng A369:302–308
Benedict Gary F (1987) Nontraditional manufacturing process. Marcel Dekker, New York
Ho KH, Newman ST (2003) State of the art electrical discharge machining (EDM). Int J Mach Tools Manuf 43:1287–1300
Karthikeyan R, Lakshminarayanan PR et al (1999) Mathematical modeling of electric discharge machining of aluminum–silicon carbide particulate composites. J Mater Process Technol 87:59–63
Hocheng H, Lei WT, Hsu HS (1997) Preliminary study of material removal in electrical discharge machining of SiC/Al. J Mater Process Technol 63:813–818
Manna A, Bhattacharyya B (2005) Taguchi gauss elimination method: a dual response approach for parametric optimization of CNC wire cut EDM of PR Al-SiC MMC. Int J Adv Manuf Technol 28(1):67–75
Biing HY, Che CW (1999) The machining characteristics of Al2O3/6061 Al composites using rotary electro discharge machining with a tube electrode, J. Mater Process Technol 95:222–231
Biing HY, Hsien CT et al (2005) Examination of wire electrical discharge machining of Al2O3 p/6061 Al composites. Int J Mach Tools Manuf 45:251–259
Mohan B, Rajadurai A, Satyanarayana KG (2004) Electric discharge machining of Al-SiC metal matrix composites using rotary tube electrode. J. Mater Process Technol. 153–154:987–985
Hassan SF, Gupta M (2005) Development of high performance magnesium nano composites using nano alumina reinforcement. Mater Sci Eng A392:163–168
Aravindan S, Naveen Sait A, Noorul Haq A (2008) A machinability study of GFRP pipes using statistical techniques. Int J Adv Manuf Technol 37(11-12):1069
Montgomery DC (2006) Design and analysis of experiments, 5th edn. Wiley, New York
Said Jahanmir Ramulu M, Koshy P (1999) Machining of ceramics and composites. Marcel Dekker, New York
Muller F, Moaghan J (2000) Non conventional machining of particle reinforced metal matrix composite. Int J Mech Tools Manuf 40:1351–1366
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Ponappa, K., Aravindan, S., Rao, P.V. et al. The effect of process parameters on machining of magnesium nano alumina composites through EDM. Int J Adv Manuf Technol 46, 1035–1042 (2010). https://doi.org/10.1007/s00170-009-2158-9
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DOI: https://doi.org/10.1007/s00170-009-2158-9