Comparative Analysis for Hard Turning of Cryogenically Treated and Non Treated EN8 Steel by Using TNMG 160408 Insert

International Journal of Mechanical Engineering
© 2018 by SSRG - IJME Journal
Volume 5 Issue 5
Year of Publication : 2018
Authors : Kazi Razaul Aarefeen, N.A. Kadam
How to Cite?

Kazi Razaul Aarefeen, N.A. Kadam, "Comparative Analysis for Hard Turning of Cryogenically Treated and Non Treated EN8 Steel by Using TNMG 160408 Insert," SSRG International Journal of Mechanical Engineering, vol. 5,  no. 5, pp. 40-48, 2018. Crossref,


En8 steel is the most commonly used steel in applications like gears, bolts, pins, studs, etc. These applications of En8 material require it to be readily machinable and, at the same time, possess a sufficiently high amount of hardness and strength. A conventional heat treatment process used to enhance the mechanical properties of En8 steel consists of quenching and tempering. Cryogenic processing consists of quenching the material, then treating it at a temperature as low as –193°C, followed by material tempering. Turning is becoming more popular for hardened steels as it has several benefits over grinding. The hard-turning process is defined as machining the work material having a hardness greater than 45 H.R.C. PCBN or hardened inserts are dominant tool materials for hard turning applications due to their high hardness, high wear resistance, and high thermal stability. Compared to grinding operations, hard turning has higher material removal rates, the possibility of greater process flexibility and lower energy consumption. The objective of the present work is to compare the results obtained by cyo-treated and non treated workpiece and to establish a correlation between cutting parameters such as cutting speed, feed rate and depth of cut with machining force, material removal rate and surface roughness on both cryo- treated and non treated EN8 workpieces. The TNMG inserts with a chamfer edge profile are used for turning. It is found that the use of lower feed value, lower Depth of cut with the cutting speed 135 and 180 m/min ensures minimum cutting forces, surface roughness and high M.R.R. 235m/min, 0.2 mm/rev, and 0.5 mm is the optimum parameter obtained by Grey Relational Analysis.


EN8 Steel, Cryogenic treatment, Material Removal Rate (M.R.R.), Force Measurement, Surface Roughness, Response Surface Methodology (R.S.M.), Grey Relational Analysis. (G.R.A.)


[1] Gaurav Bartarya, S.K.Choudhury, "State of the art in hard turning," International Journal of Machine Tools & Manufacture 53 (2012) 1–14.
[2] C.E.H. Ventura, J. Kohler, B. Denkena, "Cutting edge preparation of PCBN inserts by means of grinding and its application in hard turning," CIRP Journal of Manufacturing Science and Technology (2013).1-8
[3] T. Ozel, Y. Karpat, A. Srivastava, Hard turning with variable micro-geometry PcBN tools, CIRP Annals - Manufacturing Technology 57 (2008) 73–76
[4] Abhijeet S. Morea, Wenping Jiang, W.D. Brownb, Ajay P. Malshe, "Tool wear and machining performance of CBN–TiN coated carbide inserts and PCBN compact inserts in turning AISI 4340 hardened steel", Journal of Materials Processing Technology 180 (2006) 253–262
[5] Gaurav Bartaryaa, S.K.Choudhury, "Effect of cutting parameters on cutting force and surface roughness during finish hard turning AISI52100 grade steel", Procedia CIRP 1 ( 2012 ) 651 – 656.
[6] Satish Chinchanikar, S.K. Choudhury, "Effect of work material hardness and cutting parameters on the performance of coated carbide tool when turning hardened steel: An optimization approach," Measurement 46 (2013) 1572–1584
[7] Hamdi Aouici, Yallese, Kamel Chaoui, Mabrouki, Rigal, "Analysis of surface roughness and cutting force components in hard turning with CBN tool: Prediction model and cutting conditions optimization," Measurement 45 (2012) 344-353
[8] Ilhan Asiltürk, Harun Akku, "Determining the effect of cutting parameters on surface roughness in hard turning using the Taguchi method," Measurement 44 (2011) 1697–1704
[9] Amanda Lynne McKie, "Mechanical Properties of CBN-Al Composite Materials Dependence on Grain Size of CBN and Binder Content," Thesis for M.S at University of the Witwatersrand, Johannesburg October 2009,10-180
[10] M.Y. Noordin, V.C. Venkatesh, S. Sharif, S. Elting, A. Abdullah, "Application of response surface methodology in describing the performance of coated carbide tools when turning AISI 1045 steel", Journal of Materials Processing Technology 145 (2004) 46–58.
[11] B. Denkena, J. Köhler, C.E.H. "Ventura Customized cutting edge preparation using grinding," Precision Engineering 37 (2013) 590– 598.
[12] Ashok Kumar Sahoo, Bidyadhar Sahoo, "Experimental investigations on machinability aspects in finish hard turning of AISI 4340 steel using uncoated and multilayer-coated carbide inserts", Measurement 45 (2012) 2153–2165.
[13] M.M.A. Khana, Mithua, N.R. Dharb, "Effects of minimum quantity lubrication on turning AISI 9310 alloy steel using vegetable oil-based cutting fluid", Journal of Materials Processing Technology 209 (2009) 5573–5583.
[14] Bernhard Karpuschewskia, Konrad Schmidta, Julia Prilukovab, Jozef Be not, Ildikó Ma nkovác, Nguyen Trong Hieud "observed influence of tool edge preparation on the performance of ceramic tool inserts when hard turning," Journal of Materials Processing Technology 209 (2013) 1978–1988.
[15] Kistler Handbook for –5 to 10 kN 9257B type dynamometer and 5070A. Type multi charge amplifier for Multicomponent Force Measurement, 485e-02.14.
[16] Douglas C. Montgomery "Design and Analysis of Experiments" Wiley, Singapore, 5th Edition 1996, 11-19,170-200
[17] Alpesh R. Patel, Vallabh D. "Analysis and Prediction of Tool Wear, Machined Surface Roughness in Hard Turning" IJSRD - International Journal for Scientific Research & Development| Vol. 2, Issue 02, 2014 |, PP-76-83.
[18] John O. Rawlings, Sastry G. Pantula, David A. Dickey, "Applied regression analysis: A research tool, 2nd edition", Springer-Verlag London Limited 1998,62-98
[19] AmitPhogat, "Optimization of cutting parameters for turning operations based on response surface methodology" International Journal of Enhanced Research in Science Technology &EngineeringVol. 2 Issue 7, July-2013, pp: (83-89).
[20] Singiresu S. Rao, "Engineering Optimization: Theory and Practice, Fourth Edition," John Wiley & Sons, Inc.56-135
[21] P.K.Roy, H.Bagchi, Y.V.Deshmukh, "Cutting tool technology" vol 1, Nirali Prakashan, Edition 1999, 55-167
[22] P. Jayaraman, L. Mahesh Kumar, "Multi-response Optimization of Machining Parameters of Turning AA6063 T6 Aluminium Alloy using Grey Relational Analysis in Taguchi Method", Procedia Engineering 97 ( 2014 ) 197 – 204
[23] Amitabha Ghosh, Asok Kumar Mallik, "Manufacturing Science," Second edition, East-west publication, 2010, 179-213
[24] KK Arbar A, "Study And Analysis Of Effect Of Coating On Hss Cutting Tool A Review Paper" International Journal of Science, Engineering and Technology Research (IJSETR) Volume 2, Issue 4, April 2013, PP 814-817.
[25] Zahia Hessainia, Ahmed Belbah, Mohamed Athmane Yallese, Tarek Mabrouki, Jean-François Rigal, "On the prediction of surface roughness in the hard turning based on cutting parameters and tool vibrations," Measurement 46 (2013) 1671–1681
[26] Mr.L.Suresh Kumar, Dr.S.M.Verma, P.RadhakrishnaPrasad, P.Kiran Kumar, Dr.T.Siva Shanker. "Experimental Investigation for Welding Aspects of AISI 304 & 316 by Taguchi Technique for the Process of T.I.G. & M.I.G. Welding". International Journal of Engineering Trends and Technology (IJETT), V2(2):28-33 Sep to Oct 2011.
[27] Arvind Kumar, "Optimization of Material Removal Rate in C.N.C. Turning of Mild Steel 1018 using Taguchi method", IJITKMSpecial Issue (ICFTEM-2014) May 2014 pp. 231-237.
[28] Ashish Yadav, Ajay Bangar, "Optimization of Turning Process Parameters for Their Effect on EN24 Material Workpiece Hardness by Using Taguchi Parametric Optimization Method" International Journal of Mechanical and Industrial Engineering (IJMIE), Volume-1, Issue-3, 2012, P.P. 36-40.
[29] B.Suresh, Pon.Azhagiri, T.Senthil Kumar, B.Kumarakurubaran," Experimental Investigation on Surface Roughness and Material Removal Rate during Turning of EN8 Steel" International Journal of Emerging Technologies in Engineering Research (IJETER) Volume 4, Issue 6, June (2016)
[30] Mansi M Lakhani, Niyati Raut, "Influence of Cryogenic Processing on Microstructure and Properties of En8 Steel" International Journal of Scientific & Engineering Research, Volume 8, Issue 2, February-2017 ISSN 2229-5518.
[31] P. Baldissera* and C. Delprete," Deep Cryogenic Treatment: A Bibliographic Review" The Open Mechanical Engineering Journal, 2008, vol 2, 1-11 1