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Laser micro-nano texturing of a polycrystalline ultra-hard cutting tool to improve wear behaviour
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Paper Abstract

Polycrystalline diamond cutting tools are widely used for drilling and turning applications due to their high wear resistance and long durability, however the issue of adhesion of workpiece to the cutting tool significantly affects the cutting tool lifetime. Using a nanosecond fibre laser surface texturing of polycrystalline diamond single point cutting tools is proposed to improve diamond wear and anti-adhesion properties in machining aluminium alloys. The textures, with topographical features’ depths and pitch ranging from tens of nanometers to tens of micrometers, were first milled using a fibre laser (1064-nm wavelength) at different fluences, feed speeds and pulse durations, and finally characterised using a combination of Scanning Electron Microscopy, White Light Interferometry and Energy Dispersive X-Ray (EDX). The effect of different textures on the wear properties was investigated in turning tests under dry conditions. The tests were stopped every 20 passes and the wear analysed through an Alicona optical 3D measurements. The online monitoring and post-processing of the cutting forces and the microscopical characterisation of the tested cutting tools allowed the evaluation of the effects of texture design and adhesive properties. For textures depths in the order of 260nm and post process roughness in the order of tens of nanometers, a reduction of cutting force and an improvement of antiadhesive effect were achieved in dry turning.

Paper Details

Date Published: 4 March 2019
PDF: 9 pages
Proc. SPIE 10906, Laser-based Micro- and Nanoprocessing XIII, 1090607 (4 March 2019); doi: 10.1117/12.2507208
Show Author Affiliations
Manuela Pacella, Loughborough Univ. (United Kingdom)
Amir Badiee, Univ. of Lincoln (United Kingdom)
Priyanka Ghosh, Loughborough Univ. (United Kingdom)

Published in SPIE Proceedings Vol. 10906:
Laser-based Micro- and Nanoprocessing XIII
Udo Klotzbach; Akira Watanabe; Rainer Kling, Editor(s)

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