Abstract
A large number of parameters significantly affect the performance of electrical discharge machining (EDM) which is a non-conventional technique. The choice of the EDM parameters depends on workpiece-electrode material combination. So, the selection of parameters becomes intricate. This manuscript presents the surface characteristics of the machined surface in EDM on Ti-5Al-2.5Sn titanium alloy. The surface roughness and the microstructure of the machined surface are explored for different EDM parameters and electrode materials. Experimentation was accomplished using negative polarity of copper, copper-tungsten and graphite electrode. In this study, peak current, pulse-on time, pulse-off time and servo-voltage are taken into consideration as process variables. The surface roughness is greatly influenced by peak current and pulse-on time among the selected electrical parameters. Among the three electrodes, the copper electrode produces the lowest surface roughness whilst graphite electrode gives the highest surface roughness. The surface characteristics (crater, crack and globule) are distorted on account of discharge energy. In context of fine surface characteristics, the copper can become as first choice electrode materials.
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References
Liu X, Chu PK, Din C (2004) Surface modification of titanium, titanium alloys, and related materials for biomedical applications. Mater Sci Eng R. doi:10.1016/j.mser.2004.11.001
Kuroda D, Niinomi M, Morinaga M, Kato Y, Yashiro T (1998) Design and mechanical properties of new β type titanium alloys for implant materials. Mater Sci Eng A. doi:10.1016/S0921-5093(97)00808-3
Khan MAR, Rahman MM, Kadirgama K (2015) An experimental investigation on surface finish in die-sinking EDM of Ti-5Al-2.5Sn. Int J Adv Manuf Technol. doi:10.1007/s00170-014-6507-y
Rahman MM, Khan MAR, Kadirgama K, Noor MM, Bakar RA (2010). Mathematical modeling of material removal rate for Ti-5Al-2.5Sn through EDM process: a surface response method. Advances in Control, Chemical Engineering, Civil Engineering and Mechanical Engineering 34–37
Khan MAR, Rahman MM, Kadirgama K, Ismail AR (2012a) Mathematical model for wear rate of negative graphite electrode in electrical discharge machining on Ti-5A1-2.5Sn. Jurnal Teknologi 59:57–61
Lovatt R (2008) The development of a lightweight electric vehicle chassis and investigation into the suitability of tial for automotive applications. M.Sc. Thesis. The University of Waikato, Hamilton, New Zealand
Khan MAR, Rahman MM, Kadirgama K, Maleque MA, Bakar RA (2011a) Artificial intelligence model to predict surface roughness of Ti-15-3 alloy in EDM process. World Academic Science Engineering Technology 74:121–125
Rahman MM, Khan MAR, Noor MM, Kadirgama K, Bakar RA (2011) Optimization of machining parameters on surface roughness in EDM of Ti-6Al-4V using response surface method. Advance Materials Research. doi:10.4028/www.scientific.net/AMR.213.402
Khan MAR, Rahman MM, Kadirgama K (2012b) Mathematical model and optimization of surface roughness during electrical discharge machining of Ti-5Al-2.5Sn with graphite electrode. Adv Sci Lett. doi:10.1166/asl.2012.4211
Khan MAR, Rahman MM, Kadirgama K, Bakar RA (2012c) Artificial neural network model for material removal rate of Ti-15-3 in electrical discharge machining. Energy Education Science and Technology Part A: Energy Science and Research 29(2):1025–1038
Maher I, Ling LH, Sarhan AAD, Hamdi M (2015) Improve wire EDM performance at different machining parameters—ANFIS modelling. IFAC-PapersOnLine 48(1):105–110
Chen SL, Yan BH, Huang FY (1999) Influence of kerosene and distilled water as dielectrics on the electric discharge machining characteristics of Ti–6A1–4V. Journal of Materials Processing Technologies 87:107–111
Hascalik A, Caydas U (2007) Electrical discharge machining of titanium alloy (Ti–6Al–4V). Appl Surf Sci. doi:10.1016/j.apsusc.2007.05.031
Caydas U, Hascalik A (2008) Modeling and analysis of electrode wear and white layer thickness in die-sinking EDM process through response surface methodology. International J Adv Manuf Technol. doi:10.1007/s00170-007-1162-1
Fonda P, Wang Z, Yamazaki K, Akutsu Y (2008) A fundamental study on Ti–6Al–4V’s thermal and electrical properties and their relation to EDM productivity. Journal of Materials Processing Technologies. doi:10.1016/j.jmatprotec.2007.09.060
Rao GKM, Janardhana GR, Rao DH, Rao MS (2008) Development of hybrid model and optimization of metal removal rate in electric discharge machining using artificial neural networks and genetic algorithm. ARPN Journal of Engineering and Applied Science 3(1):19–30
Rao GKM, Rangajanardhaa G, Rao DH, Rao MS (2009) Development of hybrid model and optimization of surface roughness in electric discharge machining using artificial neural networks and genetic algorithm. Journal of Materials Processing Technologies. doi:10.1016/j.jmatprotec.2008.04.003
Kao JY, Tsao CC, Wang SS, Hsu CY (2010) Optimization of the EDM parameters on machining Ti–6Al–4 V with multiple quality characteristics. Int J Adv Manuf Technol. doi:10.1007/s00170-009-2208-3
Raghav G, Kadam BS, Kumar M (2013) Optimization of material removal rate in electric discharge machining using mild steel. International Journal of Emerging Science and Engineering 1(7):2319–6378
Pawade MM, Banwait SS (2013) A brief review of die sinking electrical discharging machining process towards automation. Am J Mech Eng. doi:10.12691/ajme-1-2-4
Khan MAR, Rahman MM (2013) Development of regression equation for surface finish and analysis of surface integrity in EDM. International Journal of Mechanical, Industrial Science and Engineering 7(3):105–110
Ahmad S, Lajis MA (2013) Electrical discharge machining (EDM) of inconel 718 by using copper electrode at higher peak current and pulse duration. IOP Conf Series : Materials Science and Engineering 50:1–7
Daneshmand S, Kahrizi EF, Abedi E, Abdolhosseini MM (2013) Influence of machining parameters on electro discharge machining of niti shape memory alloys. Int J Electrochem Sci 8:3095–3104
Gill AS, Kumar S (2016) Surface roughness and microhardness evaluation for EDM with Cu–Mn powder metallurgy tool. Journal of Materials and Manufacturing Processes 31(4):514–521. doi:10.1080/10426914.2015.1070412
Gopalakannan S, Senthilvelan T (2012) Effect of electrode materials on electric discharge machining of 316 L and 17-4 PH stainless steels. J Miner Mater Charact Eng 11:685–690
Hegab HA, Gadallah MH, Esawi AK (2015) Modeling and optimization of electrical discharge machining (EDM) using statistical design. Manuf Rev. doi:10.1051/mfreview/2015023
Kathiresan M, Sornakumar T (2010) EDM studies on aluminum alloy-silicon carbide composites developed by vortex technique and pressure die casting. Journal of Minerals & Materials Characterization & Engineering 9(1):79–88
Reddy VV, Valli PM, Kumar A, Reddy CS (2015) Influence of process parameters on characteristics of electrical discharge machining of PH17-4 stainless steel. J Adv Manuf Syst. doi:10.1142/S0219686715500122
Singh B, Singh P, Tejpal G, Singh G (2012) An experimental study of surface roughness of h11 steel in EDM process using copper tool electrode. International Journal of Advanced Engineering Technology 3(4):130–133
Daneshmand S, Kahrizi EF, Neyestanak AAL, Monfared V (2014) Optimization of electrical discharge machining parameters for Niti shape memory alloy by using the Taguchi method. J Mar Sci Technol. doi:10.6119/JMST-013-0624-1
Gostimirovic M, Kovac P, Sekulic M, Skoric B (2012) Influence of discharge energy on machining characteristics in EDM. J Mech Sci Technol. doi:10.1007/s12206-011-0922-x
Kopeliovich D (2009) Titanium alpha and near alpha alloys. Substances and Technologies. http://www.substech.com/dokuwiki/doku.php?id=titanium_alpha_and_near-alpha_alloys. Accessed 28 Feb 2009
Kopeliovich D (2008) Titanium alpha alloy, grade 6 (Ti-5Al-2.5Sn). Substances and Technologies. http://www.substech.com/dokuwiki/doku.php?id=titanium_alpha_alloy_grade_6_ti-5Al-2.5Sn. Accessed 16 May 2008
Jahan MP, Wong YS, Rahman M (2009) A study on the fine-finish die-sinking micro-EDM of tungsten carbide using different electrode materials. J Mater Process Technol. doi:10.1016/j.jmatprotec.2008.09.015
Amorim FL, Weingaertner WL (2007) The behavior of graphite and copper electrodes on the finish die-sinking electrical discharge machining (EDM) of AISI P20 tool steel. J Braz Soc Mech Sci Eng 29(4):367–371
Mehta S, Rajurkar A, Chauhan J (2009) A review on current research trends in die-sinking electrical discharge machining of conductive ceramics. International Journal of Recent Trends in Engineering 1(5):100–104
Khan MAR, Rahman MM, Kadirgama K, Maleque MA, Ishak M (2011b) Prediction of surface roughness of Ti-6Al-4V in electrical discharge machining: a regression model. Journal of Mechanical Engineering and Science 1:16–24
Jones FD, Ryffel HH, Oberg E, McCauley CJ, Heald RM (2004) Machinery's handbook, 27th edn. Industrial Press, New York, pp 629–745
Wu KL, Yan BH, Huang FY, Chen SC (2005) Improvement of surface finish on SKD steel using electro-discharge machining with aluminum and surfactant added dielectric. International Journal of Machine Tools & Manufacture. doi:10.1016/j.ijmachtools.2004.12.005
Abu Zeid OA (1997) On the effect of electrodischarge machining parameters on the fatigue life of AISI D6 tool steel. Journal of Materials Processing Technologies 68:27–32
Tsai KM, Wang PJ (2001) Semi-empirical model of surface finish on electrical discharge machining. International Journal of Machine Tools & Manufacture 41:1455–1477
Garg RK, Singh KK, Sachdeva A, Sharma VS, Ojha K, Singh S (2010) Review of research work in sinking EDM and WEDM on metal matrix composite materials. Int J Adv Manuf Technol. doi:10.1007/s00170-010-2534-5
Mahdavinejad RA (2009) EDM process optimisation via predicting a controller model. Archives of Computational Materials Science and Surface Engineering 1(3):161–167
Puertas I, Luis CJ (2003) A study on the machining parameters optimisation of electrical discharge machining. Journal of Materials Processing Technologies. doi:10.1016/S0924-0136(03)00392-3
Ramasawmy H, Blunt L, Rajurkar KP (2005) Investigation of the relationship between the white layer thickness and 3D surface texture parameters in the die-sinking EDM process. Precis Eng. doi:10.1016/j.precisioneng.2005.02.001
Soni JS, Chakraverti G (1995) Effect of electrode material properties on surface roughness and dimensional accuracy in electro-discharge machining of high carbon high chromium die steel. Journal of institution engineering (India) Part PR: Production Engineering Division 76:46–51
Pradhan MK, Biswas CK (2009) Modeling and analysis of process parameters on surface roughness in EDM of AISI D2 tool steel by RSM approach. International Journal of Engineering and Applied Sciences 5(5):346–351
Amorim FL, Weingaertner WL (2004) Die-sinking electrical discharge machining of a high-strength copper-based alloy for injection molds. J Braz Soc Mech Sci Eng 26(2):137–144
Lee SH, Li XP (2001) Study of the effect of machining parameters on the machining characteristics in electrical discharge machining of tungsten carbide. Journal of Materials Processing Technologies 115:344–358
Ramasawmy H, Blunt L (2004) Effect of EDM process parameters on 3D surface topography. Journal of Materials Processing Technologies. doi:10.1016/S0924-0136(03)00652-6
Lin YC, Lee HS (2008) Machining characteristics of magnetic force-assisted EDM. Int J Mach Tools Manuf. doi:10.1016/j.ijmachtools.2008.04.004
Kiyak M, Cakir O (2007) Examination of machining parameters on surface roughness in EDM of tool steel. J Mater Process Technol. doi:10.1016/j.jmatprotec.2007.03.008
Wu KL, Yan BH, Lee JW, Ding CG (2009) Study on the characteristics of electrical discharge machining using dielectric with surfactant. Journal of Materials Processing Technologies. doi:10.1016/j.jmatprotec.2008.09.005
Descoeudres, A. (2006). Characterization of electrical discharge machining plasmas. Ph.D. Thesis. Ecole Polytechnique Federale de Lausanne, Switzerland
Lee HT, Tai TY (2003) Relationship between EDM parameters and surface crack formation. J Mater Process Technol. doi:10.1016/S0924-0136(03)00688-5
Bhattacharyya B, Gangopadhyay S, Sarkar BR (2007) Modelling and analysis of EDMED job surface integrity. J Mater Process Technol. doi:10.1016/j.jmatprotec.2007.01.018
Bonny K, Baets PD, Wittenberghe JV, Delgado YP, Vleugels J, Biest OV et al (2010) Influence of electrical discharge machining on sliding friction and wear of WC–Ni cemented carbide. Tribol Int. doi:10.1016/j.triboint.2010.08.008
Chiang KT (2008) Modeling and analysis of the effects of machining parameters on the performance characteristics in the EDM process of Al2O3+TiC mixed ceramic. Int J Adv Manuf Technol. doi:10.1007/s00170-007-1002-3
Yan BH, Lin YC, Huang FY, Wang CH (2001) Surface modification of SKD 61 during EDM with metal powder in the dielectric. Materials Transaction JIM 42(12):2597–2604
Patel KM, Pandey PM, Rao PV (2009) Determination of an optimum parametric combination using a surface roughness prediction model for EDM of Al2O3/SiCw/TiC ceramic composite. Mater Manuf Process. doi:10.1080/10426910902769319
Senthilkumar V, Omprakash BU (2011) Effect of titanium carbide particle addition in the aluminium composite on EDM process parameters. Journal of Manufacturing Process. doi:10.1016/j.jmapro.2010.10.005
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Khan, M.A.R., Rahman, M. Surface characteristics of Ti-5Al-2.5Sn in electrical discharge machining using negative polarity of electrode. Int J Adv Manuf Technol 92, 1–13 (2017). https://doi.org/10.1007/s00170-017-0028-4
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DOI: https://doi.org/10.1007/s00170-017-0028-4