Journal
PRECISION ENGINEERING-JOURNAL OF THE INTERNATIONAL SOCIETIES FOR PRECISION ENGINEERING AND NANOTECHNOLOGY
Volume 64, Issue -, Pages 300-306Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.precisioneng.2020.05.001
Keywords
Shearthickening fluids; Ti-6Al-4V; Finishing; Surfaceroughness; Nanolevel
Categories
Funding
- National Natural Science Foundation of China [51875329, 51905323]
- Taishan Scholar Special Foundation of Shandong Province [tsqn201812064]
- Shandong Provincial Natural Science Foundation, China [ZR2017MEE050]
- Shandong Provincial Key Research and Development Project, China [2018GGX103008]
- Scientific Innovation Project for Young Scientists in Shandong Provincial Universities, China [2019KJB030]
- Key Research and Development Project of Zibo City, China [2019ZBXC070]
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The available magnetic field assisted finishing process is considered as the critical stage for improvement of workpiece surface quality. This paper aims to investigate the key quality performance of an enhanced magnetic abrasive finishing in achieving nanolevel finish on Ti-6Al-4V workpieces with initial micrometer surface roughness values. The finishing media, combining the intelligent shear thickening fluids (STFs), carbonyl iron particles and SiC particles, is developed. Finishing experiments for Ti-6Al-4V workpieces are conducted using an established platform, aiming to investigate the effects of varying STFs concentration, working gap, feed rate and spindle rotational speed. It is observed from the experimental results that the developed finishing media is effective for surface finishing comparing to the finishing media without STFs. The surface roughness of 54 nm was achieved from the initial value of 1.17 mu m, which improved by over 95%, under the experimental conditions of 0.8 mm working gap, 15000 mm/min feed rate, 900 rpm spindle rotational speed and 15 wt% STFs. Surface observations showed that a smooth surface without obvious scratches was obtained.
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