Analysis of MRR and TWR on OHNS Die Steel with Different Electrodes Using Electrical Discharge Machining


Article Preview

Electrical Discharge Machining is a machining method primarily used for hard metals or those that are impossible to be machined with traditional techniques. The experimental investigation of material removal rate and tool wear rate during machining of oil hardened non-shrinking steel with brass and copper electrodes using EDM machine was carried out in this paper. This investigation presents the analysis and evaluation of heat affected zones and surface finish of the work piece using different tool electrodes and varying the machine parameters. The commercial grade kerosene oil has been used as dielectric fluid. The effect of various important EDM parameters such as discharge current (Ip) 2 to12A, pulse duration (Ton and Toff) and sparking voltage (V) of 80±5% have been used to yield the response in terms of Material Removal Rate (MRR) and Tool Wear Rate (TWR). Further a detailed analysis of the heat affected regions was also been carried out by using scanning electron microscopy.





S. Nallusamy "Analysis of MRR and TWR on OHNS Die Steel with Different Electrodes Using Electrical Discharge Machining", International Journal of Engineering Research in Africa, Vol. 22, pp. 112-120, 2016

Online since:

February 2016





* - Corresponding Author

[1] Trupti G. Raut and M.Y. Shinde, A review on optimization of machining parameters in EDM, Int. Journal of Innovative Research in Science, Engg. and Tech., Vol. 4(3), (2015), pp.893-896.


[2] Kuldeep Ojha, R.K. Garg and K.K. Singh, MRR improvement in sinking electrical discharge machining: A review, Journal of Minerals & Materials Characterization & Engineering, Vol. 9(8), (2010), pp.709-739.


[3] N. Anand et al, Analysis of the influence of EDM parameters on surface quality, MRR, EWR and microhardness of AISI O2 (1. 2842), International Journal of Scientific and Engineering Research, Vol. 5(3), (2014), pp.850-857.

[4] Asif Iqbal and Ahsan Ali Khan, Modeling and analysis of MRR, EWR and surface roughness in EDM milling through response surface methodology, American Journal of Engineering and Applied Sciences, 2010, 3(4), 611-619.


[5] Kapil Banker et al, Parameter optimization of electro discharge machine of AISI 304 steel by using taguchi method, International Journal of Application or Innovation in Engineering & Management, Vol. 3(8), (2014), pp.20-24.

[6] Manjinder Singh et al, Experimental investigation of machining parameters using rotary electrode for EDM of HCHCR D2 steel, Advances in Materials and Manufacturing Technology, Vol. 4(10), (2015), pp.83-86.

[7] Surender Kumar, Satpal Kundu and Ravinder, Optimization of process parameter and experimental investigation of MRR on H-13 die tool steel using EDM with application of taguchi technique, International Journal of Engg. and Mgt. Research, Vol. 4(1), (2014).

[8] Kamaljit Singh, An experimental investigation: machining of OHNS steel by EDM, Journal of Engineering, Computers & Applied Sciences, Vol. 2(6), (2013), pp.39-42.

[9] Dalbir Singh, Naveen Beri and Anil Kumar, Some investigations on electrical discharge machining of OHNS steel with a copper tungsten powder metallurgy electrode using response surface methodology, Journal of Metallurgical Engineering, Vol. 1(1-2), (2011).

[10] C. Mathalai et al, An experimental investigation of machining parameters of EDM of OHNS steel, International Journal of Engg. Research and Tech., Vol. 2(12), (2013), pp.2419-2427.

[11] Pushpendra S bharti, Maheshwari and Sharma, Experimental investigation of in conel 718 during die-sinking electric discharge machining, International Journal of Engineering Science and Technology, Vol. 2(11), (2010), pp.6464-6473.

[12] Rajesh Choudhary, Kumar and Garg, Analysis and evaluation of heat effected zones of electrical discharging machining of EN 31 die steel, Indian Journal of Engineering and Material Sciences, Vol. 17, (2010), pp.91-98.

[13] Boujelbene et al, Influence of machining parameters on the surface integrity in electrical discharge machining, Archives of Materials Science and Engg., Vol. 37(2), (2009), pp.110-116.

[14] Ahsan Ali Khan, Mohammad Yeakub Ali and Md. Mohafizul Haque, A study of electrode shape configuration on the performance of die sinking EDM, International Journal of Mechanical and Materials Engineering, Vol. 4(1), (2009), pp.19-23.

[15] Fred L. Amorim and Walter L. Weingaertner, The behavior of graphite and copper electrodes on the finish die-sinking electrical discharge machining (EDM) of AISI P20 tool steel, Journal of the Brazilian Society of Mech. Sciences and Engg., Vol. 29(4), (2007).


[16] Tomadi and Hassan, Analysis of influence of EDM parameters on surface quality, material removal rate and electrode wear on tungsten carbide, Proceedings of the International Multi-Conference of Engineers and Computer Scientists, Vol. 2, (2009).

Fetching data from Crossref.
This may take some time to load.