Proceedings of the International MultiConference of Engineers and Computer Scientists 2011 Vol II, IMECS 2011, March 16 - 18, 2011, Hong Kong Assessment on Magnetic Flux Density of Magnetic Array Table in Magnetic Abrasive Polishing Process Jae-Seob Kwak, Han-Sung Kang Abstract—Magnetic abrasive polishing (MAP) is one of the advanced finishing processes. But to polish non-ferrous material using the MAP process is low efficiency because the process is fundamentally possible by help of a magnetic force and the magnetic force for non-ferrous material is low. This study aims to develop the magnetic array table and control the magnetic polarity for improving the magnetic force in the MAP of non-ferrous materials. The magnetic array table newly designed has 32 electro-magnets. Moreover it can be easily controlled by the change of polarity. To improve the magnetic force efficiently on the non-ferrous material, the simulation and experimental verification of magnetic flux density are performed according to variation of the magnetic polarity. In the result of study, it is observed that MAP with magnetic array table has better surface roughness than without magnetic array table. Index Terms—MAP (Magnetic Abrasive Polishing), Magnetic Flux Density, Magnetic Array Table, Electro Magnet Analysis I. INTRODUCTION I N the present technological world many products require a surface roughness of the order of a micro/nanometer. Magnetic abrasive polishing (MAP) is one of the advanced finishing processes, which produces a high level of surface quality [1,2]. MAP is a process in which workpiece surface is smoothened by removing the material in the form of micro chips by abrasive particles in the presence of magnetic field in the finishing zone [3]. The working gap between workpiece and inductor is filled with mixture of ferromagnetic particles and abrasive powder popularly known as magnetic abrasive particles. These particles form a flexible magnetic abrasive brush which does not require dressing. Magnetic abrasive particle are either bonded (fabricated by compacting and sintering of the mixture) or unbounded (mechanical mixture of ferromagnetic and abrasive particle) [4]. The tool can remove a very small amount of materials from a workpiece and then a better surface can be produced after polishing the workpiece without damages on the surface [5,6]. Nevertheless, it is very difficult to polish non-ferrous materials off using the MAP J. S. Kwak Department of Mechanical Engineering Pukyong National University Nam-Gu, Busan, South Korea (phone: +82-51-629-6139; e-mail: