Investigation on Feasibility of Polishing Concave Surfaces Using Magnetic Compound Fluid Slurry
Ming Feng*,**,, Yingrui Xie**, Leran Chen**, and Yongbo Wu**
*College of Mechanical and Electrical Engineering, Wenzhou University
Wenzhou City, Zhejiang 325035, China
**Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, China
Concave surfaces are widely used in the shells of smart devices, such as smartphones, watches, or molds. The quality of the concave surface is important in enhancing the value of these products. In order to improve the surface quality, the polishing process is crucial for removing defects on the concave surface and for smoothing the surface after machining or grinding. Magnetic assisted polishing is a promising method that can be used to meet the high standard of surface quality required. In this work, as a promising smart material in nano-precision polishing, magnetic compound fluid (MCF) slurry was used for the first time to polish a concave surface with a magnet that is magnetized in the radial direction. A simulation of the magnetic field distribution was performed in advance to clarify the polishing characteristics in theory. Subsequently, a polishing experiment was conducted to investigate the feasibility of this polishing method. Finally, the results demonstrated that both a curved surface and a flat surface could be polished successfully. Furthermore, the nano-precision PV value (the distance from the peak to the valley in the surface profile) and the surface roughness Ra were obtained for both areas, and this method was demonstrated to be capable of polishing concave surfaces and worthy of further research.
-  Y. Manabe, H. Murakami, T. Hirogaki, E. Aoyama, and T. Furuki, “Mirror-Surface Finishing by Integrating Magnetic-Polishing Technology with a Compact Machine Tool,” Int. J. Automation Technol., Vol.13, No.2, pp. 207-220, 2019.
-  K. Takahashi, “Deburring Finishing Using a Magnetic Polishing Machine,” Int. J. Automation Technol., Vol.4, No.1, pp. 33-37, 2010.
-  M. Anzai, T. Nakagawa, N. Yoshioka, and S. Banno, “Development of Inline Micro-Deburring Applying Magnetic-Field-Assisted Polishing,” Int. J. Automation Technol., Vol.4, No.1, pp. 9-14, 2010.
-  Y. Tani, K. Kawata, and K. Nakayama, “Development of high-efficient fine finishing process using magnetic fluid,” CIRP Annals, Vol.33, Issue 1, pp. 217-220, 1984.
-  S. D. Jacobs, S. A. Arrasmith, and I. A. Kozhinova et al., “An overview of magnetorheological finishing (MRF) for precision optics manufacturing (invited contribution),” Ceramic Trans., Vol.102, pp. 185-199, 1999.
-  K. Shimada et al., “Characteristics of magnetic compound fluid (MCF) in a rotating rheometer,” J. of Magnetism and Magnetic Materials, Vol.252, pp. 235-237, 2002.
-  Y. Wu, K. Shimada, Y. C. Wong, and M. Kato, “Effects of particles blend ratio on surface quality in surface polishing using magnetic polishing liquid (MPL),” Int. J. Advances in Abrasive Technology, Vols.291-292, pp. 337-342, 2005.
-  M. Nomura, N. Makita, T. Fujii, and Y. Wu, “Effects of Water Supply Using Ultrasonic Atomization on the Working Life of MCF Slurry in MCF Polishing,” Int. J. Automation Technol., Vol.13, No.6, pp. 743-748, 2019.
-  T. Furuya, Y. Wu et al., “Fundamental performance of magnetic compound fluid polishing liquid in contact-free polishing of metal surface,” J. of Materials Processing Technology, Vol.201, Issues 1-3, pp. 536-541, 2008.
-  H. Guo and Y. Wu, “Behaviors of MCF (Magnetic Compound Fluid) Slurry and its Mechanical Characteristics: Normal and Shearing Forces under a Dynamic Magnetic Field,” Experimental Force: J. of JSEM, Vol.12, No.4, pp. 369-374, 2013.
-  H. Guo, Y. Wu et al., “Effects of pressure and shear stress on material removal rate in ultra-fine polishing of optical glass with magnetic compound fluid slurry,” J. of Materials Processing Technology, Vol.214, Issue 11, pp. 2759-2769, 2014.
-  Y. Wang, Y. Wu, and M. Nomura, “Feasibility study on surface finishing of miniature V-grooves with magnetic compound fluid slurry,” Precis. Eng., Vol.45, pp. 67-78, 2016.
-  M. Feng, Y. Wu, Y. Wang et al., “Investigation on the polishing of aspheric surfaces with a doughnut-shaped magnetic compound fluid (MCF) tool using an industrial robot,” Precision Engineering, Vol.61, pp. 182-193, 2020.
-  H. Guo and Y. Wu, “Ultrafine polishing of optical polymer with zirconia-coated carbonyl iron-particle-based magnetic compound fluid slurry,” Int. J. Adv. Manuf. Technol., Vol.85, pp. 253-261, 2016.
-  Y. Wang, Y. Wu, H. Guo et al., “A new magnetic compound fluid slurry and its performance in magnetic field-assisted polishing of oxygen-free copper,” J. of Applied Physics, Vol.117, No.17, 17D712, 2015.
-  L. Jiao, “The Effect of Magnetic Field Distribution on Material Removal in Magnetic Compound Fluid Wheel Polishing,” J. of Mechanical Engineering, Vol.49, 79, 2013.
-  M. Feng, Y. Wang, T. Bitoh et al., “Polishing investigation on zirconia ceramics using magnetic compound fluid slurry,” Int. J. of Abrasive Technology, Vol.9, No.4, pp. 257-275, 2019.
-  H. Guo, Y. Wu, D. Lu et al., “Ultrafine Polishing of Electroless Nickel-Phosphorus-Plated Mold with Magnetic Compound Fluid Slurry,” Materials and Manufacturing Processes, Vol.29, Issues 11-12, pp. 1502-1509, 2014.
-  M. Feng, Y. B. Wu et al., “Fundamental investigation on the polishing aspheric elements with doughnut-shaped MCF slurry,” Key Eng. Mater., Vol.792, pp. 179-184, 2018.
-  K. Shimada, T. Fujita, H. Oka, Y. Akagami, and S. Kamiyama, “Hydrodynamic and magnetized characteristics of MCF (magnetic compound fluid),” Trans. Jpn. Soc. Mech. Eng., Vol.67, pp. 3034-3040, 2001.
-  Y. Wang, Y. Wu, and M. Nomura, “Fundamental investigation on nano-precision surface finishing of electroless Ni-P-plated STAVAX steel using magnetic compound fluid slurry,” Precis. Eng., Vol.48, pp. 32-44, 2017.
-  A. K. Singh, S. Jha, and P. M. Pandey, “Design and development of nanofinishing process for 3D surfaces using ball end MR finishing tool,” Int. J. of Machine Tools and Manufacture, Vol.51, No.2, pp. 142-151, 2011.
This article is published under a Creative Commons Attribution-NoDerivatives 4.0 Internationa License.