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Lookup NU author(s): Amin Dadgari, Dr Dehong Huo, Dr David Swailes
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
© 2018, Editorial Office of Nanotechnology and Precision Engineering. All right reserved. Short tool life and rapid tool wear in micromachining of hard-to-machine materials remain a barrier to the process being economically viable. In this study, standard procedures and conditions set by the ISO for tool life testing in milling were used to analyze the wear of tungsten carbide micro-end-milling tools through slot milling conducted on titanium alloy Ti-6Al-4V. Tool wear was characterized by flank wear rate, cutting-edge radius change, and tool volumetric change. The effect of machining parameters, such as cutting speed and feedrate, on tool wear was investigated with reference to surface roughness and geometric accuracy of the finished workpiece. Experimental data indicate different modes of tool wear throughout machining, where nonuniform flank wear and abrasive wear are the dominant wear modes. High cutting speed and low feedrate can reduce the tool wear rate and improve the tool life during micromachining.However, the low feedrate enhances the plowing effect on the cutting zone, resulting in reduced surface quality and leading to burr formation and premature tool failure. This study concludes with a proposal of tool rejection criteria for micro-milling of Ti-6Al-4V.
Author(s): Dadgari A, Huo D, Swailes D
Publication type: Article
Publication status: Published
Journal: Nami Jishu yu Jingmi Gongcheng/Nanotechnology and Precision Engineering
Year: 2018
Volume: 1
Issue: 4
Pages: 218-225
Print publication date: 01/12/2018
Online publication date: 03/01/2019
Acceptance date: 02/04/2016
Date deposited: 23/04/2019
ISSN (print): 1672-6030
ISSN (electronic): 2589-5540
Publisher: Tianjin University
URL: https://doi.org/10.1016/j.npe.2018.12.005
DOI: 10.1016/j.npe.2018.12.005
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