Title: Cutting process optimisation and modelling in dry turning of AISI H13 tool steel with brazed carbide tip

Authors: Sanghamitra Das; Hrishikesh Pathak; Rakesh Doley; Satadru Kashyap

Addresses: Department of Mechanical Engineering, Tezpur University, Tezpur, Assam 784028, India ' Department of Mechanical Engineering, Tezpur University, Tezpur, Assam 784028, India ' Department of Mechanical Engineering, Tezpur University, Tezpur, Assam 784028, India ' Department of Mechanical Engineering, Tezpur University, Tezpur, Assam 784028, India

Abstract: Surface finish and increased productivity (increased material removal rate (MRR)) are two premier performance parameters in machining and determination of optimal cutting parameters influencing the machining performance is paramount for different cutting conditions, cutting tools and workpiece materials. This study focuses on optimising a set of cutting parameters (cutting speed, feed rate and depth of cut) during dry turning operation of AISI H13 tool steel using a brazed uncoated tungsten carbide tip as the cutting tool material. Taguchi's L9 orthogonal array was employed for minimising surface roughness and maximising MRR based on signal-to-noise ratio results. Analysis of variance (ANOVA) conducted showed that the feed rate affected the performance responses (surface roughness and MRR) the most. Additionally, artificial neural network (ANN) and regression models were developed for both surface roughness and MRR, which showed promising prediction capability for calculating the surface roughness and MRR at any combination of cutting speed, feed and depth of cut.

Keywords: dry turning; Taguchi methods; surface roughness; MRR; material removal rate; ANOVA; analysis of variance; ANNs; artificial neural networks; regression analysis; cutting process optimisation; modelling; tool steel; surface quality; brazed carbide tip; tool tips; tungsten carbide; cutting speed; feed rate; depth of cut; orthogonal arrays; signal-to-noise ratio; SNR.

DOI: 10.1504/IJPTECH.2016.074181

International Journal of Precision Technology, 2016 Vol.6 No.1, pp.42 - 60

Received: 18 Apr 2015
Accepted: 20 Jul 2015
Published online: 14 Jan 2016 *

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