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Experimental studies on the performance of multilayer coated carbide tool in hard turning of high strength low alloy steel

Published online by Cambridge University Press:  17 August 2015

R. Suresh ,
S. Basavarajappa  and
V.N. Gaitonde
R. Suresh*
Affiliation:
Department of Mechanical Engineering, Alliance College of Engineering and Design, Alliance University, Bangalore 562106, Karnataka, India
S. Basavarajappa
Affiliation:
Department of Studies in Mechanical Engineering, U.B.D.T. College of Engineering, Davangere 577004, Karnataka, India
V.N. Gaitonde
Affiliation:
Department of Industrial & Production Engineering, B.V.B. College of Engineering & Technology, Hubli 580031, Karnataka, India
*
a)Address all correspondence to this author. e-mail: sureshchiru09@gmail.com
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Abstract

The aim of the present investigation is to identify the wear mechanisms of multilayer coated carbide tool under different machining conditions during turning of hardened AISI 4340 steel. The chemical vapor deposited multilayer coated (TiN/MT TiC,N/Al2O3) carbide tool was used. The worn surfaces of the cutting tools were examined under digital optical microscope, scanning electron microscope, and elemental analysis. The investigation results showed a strong correlation between the cutting conditions and tool wear. The cutting speed and feed rate ensure the dominant effects on the tool wear followed by the depth of cut and also the progress of tool wear were verified under different intervals of time. The flank and rake faces of the cutting tool were severely gouged by the hard particles of workpiece material exhibited abrasive wear phenomenon. Intermittently, chipping at cutting edge, notching and catastrophic failure modes were observed in continuous machining.

Keywords

hard turningcoated carbide tooltool wearwear mechanism
Type
Articles
Information
Journal of Materials Research , Volume 30 , Issue 20 , 28 October 2015 , pp. 3056 - 3064
Copyright
Copyright © Materials Research Society 2015 

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