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Development of Ultraprecision Finishing Technique using Bonded Magnetic Abrasives  

윤종학 (서울산업대학교 기계공학과)
박성준 (연세대학교 NT연구단)
안병운 (서울산업대학교 대학원 기계공학과)
Publication Information
Transactions of the Korean Society of Machine Tool Engineers / v.12, no.5, 2003 , pp. 59-66 More about this Journal
Abstract
This study suggests the new ultraprecision finishing techniques for micro die and mold parts using magnetic field-assisted polishing. Conventional magnetic abrasives have several disadvantages, which are missing of abrasive particle and inequal mixture between magnetic particle and abrasive particle. Therefore, bonded magnetic abrasive particles are fabricated by several method. For example, plasma melting and direct bonding. Carbonyl iron powder is used as magnetic particle there silicon carbide and alumina are abrasive particles. Developed magnetic abrasives are analyzed using SEM. Feasibility of magnetic abrasive and polishing performance of this magnetic abrasive particles also have been investigated. After polishing, surface roughness of workpiece is reduced from 85.4 ㎚ Ra to 9 ㎚ RA.
Keywords
Magnetic Field-assisted Polishing; Magnetic Particle; Abrasive Particle;
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