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ABSTRACT
The objective of this study is to analyse the surface finish achieved during turning of AISI 4340 cylindrical steel components in three machining conditions namely, flooded, near-dry and dry conditions with three separate CNMG 431-PF 4325 800 diamond finish Titanium Nitride (TiN) coated carbide cutting tool. The machining parameters considered in this study are cutting velocity, feed rate and depth of cut. The surface roughness of the machined components is measured using a surface roughness tester and subsequently, a mathematical model is developed for the average surface roughness values through regression analysis. The significance of the selected machining parameters and their levels on surface roughness is found by analysis of variance (ANOVA) and F-test. The results revealed that machining under near-dry condition provides better product surface quality in equivalence with the machined product surface quality under flooded condition.
Nomenclature
| v | = | Cutting velocity in m/min |
| f | = | Feed rate in mm/rev |
| d | = | Depth of cut in mm |
| Ra | = | Surface roughness in μm |
| r | = | Correlation coefficient |
| Fe | = | Ferrous |
| Ni | = | Nickel |
| Cr | = | Chromium |
| Mn | = | Manganese |
| C | = | Carbon |
| Mo | = | Molybdenum |
| Si | = | Silicon |
| Cu | = | Copper |
| PCLNR | = | ISO designation for the tool holder |
| CNMG | = | ISO designation for tool |
| AISI | = | American Iron and Steel Institute |
Disclosure statement
No potential conflict of interest was reported by the authors.
Additional information
Notes on contributors
Milon D. Selvam
Milon D Selvam received his BTech degree in Mechanical Engineering from Bharath Institute of Higher Education and Research, Chennai, India, ME degree in Manufacturing Engineering from Anna University, India and a Ph.D degree from Karpagam Academy of Higher Education, India in 2007, 2009 and 2018 respectively. Presently, he is doing research in the field of metal cutting fluids. He has various publications in both national and international journals. His current research interests include manufacturing of materials, metal cutting, metal cutting fluids and machining optimisation.
N. M. Sivaram
N.M. Sivaram received his BE degree in Production Engineering from PSG College of Technology, Coimbatore in 2008; MTech degree in Industrial Safety Engineering from National Institute of Technology, Tiruchirappalli in 2010 and PhD degree in Mechanical Engineering from Anna University, Chennai in 2014. He is currently working as Assistant Professor in the Department of Mechanical Engineering, National Institute of Technology Puducherry, Karaikal, India. He has 30 papers published in international journals. His current research interests include manufacturing engineering and industrial safety engineering.