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primary topic: High-speed turning of AISI 4340 alloy steel using carbide tools in a sustainable minimum quantity lubrication environment

High-speed turning of AISI 4340 alloy steel using carbide tools in a sustainable minimum quantity lubrication environment
type: AcademicArticle
type: Article
abstract: Purpose: This study aims to investigate the machining performance of CVD-coated carbide tools by considering most crucial machinability aspects: cutting force, tool life, surface roughness and chip morphology in high-speed hard turning of AISI 4340 alloy steel under a sustainable minimum quantity lubrication (MQL) environment. Design/methodology/approach: The purpose of this study is to analyze the performance of coated carbide tools under MQL environment therefore, machining tests were performed in accordance with the Taguchi L9 orthogonal array, accommodating the three crucial machining parameters such as cutting speed (V = 300â��400 m/min), feed rate (F = 0.1â��0.2 mm/rev) and depth of cut (DOC = 0.2â��0.4 mm). The measured or calculated values obtained in each experimental run were validated for normality assumptions before drawing any statistical inferences. Taguchi signal-to-noise (S/N) ratio and analysis of variance methodologies were used to examine the effect of machining variables on the performance outcomes. Findings: The quantitative analysis revealed that the depth of cut exerted the most significant influence on cutting force, with a contributing rate of 60.72. Cutting speed was identified as the primary variable affecting the tool life, exhibiting a 47.58 contribution, while feed rate had the most dominating impact on surface roughness, with an overall contributing rate of 89.95. The lowest cutting force (184.55 N) and the longest tool life (7.10 min) were achieved with low machining parameters at V = 300 m/min, F = 0.1 mm/rev, DOC = 0.2 mm. Conversely, the lowest surface roughness (496 nm) was achieved with high cutting speed, low feed rate and moderate depth of cut at V = 400 m/min, F = 0.1 mm/rev and DOC = 0.3 mm. Moreover, the microscopic examination of the chips revealed a serrated shape formation under all machining conditions. However, the degree of serration increased with an incremental raise with cutting speed and feed rate. Research limitat…
date: 2025
volume: 77
issue: 5
is part of: Industrial Lubrication and Tribology
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Emerald Publishing
type: Organization

Industrial Lubrication and Tribology
type: Collection
issn: 00368792

Jaharah A. Ghani
type: Person
given name: Jaharah
family name: A. Ghani

Nabil Jouini
type: Person
given name: Nabil
family name: Jouini

Afifah Juri
type: Person
given name: Afifah
family name: Juri

Saima Yaqoob
type: Person
given name: Saima
family name: Yaqoob

Shalina Sheik Muhamad
type: Person
given name: Shalina
family name: Sheik Muhamad

Che Hassan Che Haron
type: Person
given name: Che Hassan
family name: Che Haron

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primary topic: High-speed turning of AISI 4340 alloy steel using carbide tools in a sustainable minimum quantity lubrication environment