Behavior characteristics of abrasives for improving surface integrity in magnetic pin polishing
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DOI 10.1007/s12206-020-09 -y
Journal of Mechanical Science and Technology 34 (10) 2020 Original Article DOI 10.1007/s12206-020-2218-5 Keywords: · Surface integrity · Magnetorheological fluid · Magnetic pin polishing process · Magnetic energy · Kinetic energy
Correspondence to: Jae-Seob Kwak [email protected]
Citation: Lee, J.-H., Kwak, J.-S. (2020). Behavior characteristics of abrasives for improving surface integrity in magnetic pin polishing. Journal of Mechanical Science and Technology 34 (10) (2020) ?~?. http://doi.org/10.1007/s12206-020-2218-5
Behavior characteristics of abrasives for improving surface integrity in magnetic pin polishing Jung-Hee Lee and Jae-Seob Kwak Department of Mechanical Engineering, Pukyong National University, Busan 48547, Korea
Abstract
Since surface finishing is a necessary process to meet various requirements in a manufacturing stage, numerous finishing method have been studied to improve the surface integrity. In particular, use of magnetic energy has been developed due to benefits for complex surface. However, it is an immature technique for non-ferrous materials due to low permeability, and also it is the time-consuming process for large area, which is caused be low finishing rate. To overcome drawbacks of magnetic finishing methods, this study suggests a magnetic pin polishing (MPP) process affected by combined magnetic and kinetic energy. According to analysis of experimentation, surface roughness improved due to pin‘s dynamic motion which is generated by magnetic force and torque in presence of the magnetic field.
Received April 21st, 2020 Revised
July 1st, 2020
Accepted July 15th, 2020
1. Introduction
† This paper was presented at ICMR2019, Maison Glad Jeju, Jeju, Korea, November 27-29, 2019. Recommended by Guest Editor Insu Jeon
Improvement of surface integrity is largely important to determine product quality, reliability, and manufacturing costs in a manufacturing process. To obtain finished products satisfying multi-objective requirements with desired functional performance, a number of engineering industries have widely applied conventional finishing techniques such as honing, lapping and grinding in the last decades. Recently they have faced challenging tasks of discovering innovative techniques, as small-sized components with integrated functions are in demand. In order to overcome inherent problems traditional methods have, hybrid finishing processes, for instance electrolytic in process dressing, electric discharge diamond grinding, and so force, are employed. However, these technologies still have limitation of shape, size and constant force acting on abrasives against workpieces. Hence, efforts to develop applicable finishing methods for small-scaled complex surface are required to achieve better surface characteristics related to friction loss, fatigue life and wear resistance [1, 2]. Among the new processes, magnetic abrasive finishing (MAF) assisted by magnetic field has been widely applied. Although it brings benefits to achieve high geometric accur
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