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Volume 9, issue 2 | Copyright
Mech. Sci., 9, 231-243, 2018
https://doi.org/10.5194/ms-9-231-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 20 Jul 2018

Research article | 20 Jul 2018

Analysis of Burr Formation in Low Speed Micro-milling of Titanium Alloy (Ti-6Al-4V)

Gulfam Ul Rehman1, Syed Husain Imran Jaffery1, Mushtaq Khan1, Liaqat Ali1, Ashfaq Khan2, and Shahid Ikramullah Butt1 Gulfam Ul Rehman et al.
  • 1School of Mechanical and Manufacturing Engineering (SMME), National University of Science and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan
  • 2Department of Mechanical Engineering, University of Engineering and Technology (UET),Peshawar, KPK, Pakistan

Abstract. The use of titanium based alloys in aerospace and biomedical applications make them an attractive choice for research in micro-machining. In this research, low speed micro-milling is used to analyze machinability of Ti-6Al-4V alloy as low speed machining setup is not expensive and it can be carried out on conventional machine tools already available at most machining setups. Parameters like feed per tooth, cutting speed and depth of cut are selected as machining variables and their effect on burr formation is analyzed through statistical technique analysis of variance to determine key process variables. Results show that feed per tooth is the most dominant factor in burr formation (81% contribution ratio). The effect of depth of cut was found to be negligible. It was also observed that micro-milling at optimum process parameters showed minimum burr formation. In terms of burr formation, as compared to high speed machining setup, better results were achieved at low speed machining setup by varying machining parameters.

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The research into micro machining of advanced alloys finds its applications in the aerospace, automotive, biomedical and healthcare and other industrial areas. One of the major concern is to produce parts at micro level without further rework, specifically surface finish. In order to achieve this, suitable process parameters and machining strategy needs to be identified for advanced alloy. The research presented here focuses on this aspect of the machining of Titanium Alloy.
The research into micro machining of advanced alloys finds its applications in the aerospace,...
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