Title: Derivation of optimum abrasive for improving magnetic polishing rate for hybrid metal AM titanium alloy and creating a polishing prediction model

Authors: Takamasa Hirano; Tatsuya Furuki; Hiroyuki Kousaka

Addresses: Graduate School of Natural Science and Technology, Gifu University, 1-1, Yanagido, Gifu, Gifu 501-1193, Japan ' Graduate School of Natural Science and Technology, Gifu University, 1-1, Yanagido, Gifu, Gifu 501-1193, Japan ' Graduate School of Natural Science and Technology, Gifu University, 1-1, Yanagido, Gifu, Gifu 501-1193, Japan

Abstract: The supply of artificial replacement products such as artificial joints and artificial bones is increasing and is expected to increase in the future. Therefore, it is considered that integrating processes from additive manufacturing (AM) to cutting and polishing in a hybrid metal AM machine could greatly contribute to the stable supply of products. In addition, it is possible to manufacture artificial replacement products suitable for each patient simply by changing the 3D model. In this study, focusing on polishing, we applied a magnetic polishing method in which a permanent magnet tool was attached to the spindle of the machining centre, and a magnetic abrasive was attached to the tool and rotated. Magnetic polishing was performed on a hybrid metal AM titanium alloy, and the effects of changes in the composition of the magnetic polishing paste on the polished surface properties and polishing rate were investigated. A polishing prediction model with an optimal abrasive that can be used to derive the polishing path and time was constructed.

Keywords: magnetic polishing; abrasive paste; metal additive manufacturing; machining centre; Ti-6Al-4V; Preston constant.

DOI: 10.1504/IJAT.2020.109871

International Journal of Abrasive Technology, 2020 Vol.10 No.2, pp.106 - 121

Received: 03 Jan 2020
Accepted: 23 Jun 2020
Published online: 28 Sep 2020 *

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