Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Study on Performance Improvement in Magnetic Abrasive Polishing Assisted by Silicone Gel Medium

실리콘 겔에 의한 자기연마가공의 성능 향상에 관한 연구

  • Kim, Sang-Oh (Dept. of Mechanical Engineering, Pukyoung Nat'l Univ.) ;
  • Kwak, Jae-Seob (Dept. of Mechanical Engineering, Pukyoung Nat'l Univ.)
  • Received : 2010.05.13
  • Accepted : 2010.08.13
  • Published : 2010.10.01
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Abstract

In general, magnetic abrasive polishing can be used to effectively produce a mirror-like surface; however, industrial applications of this process involve some unsolved problems. For example, the polishing efficiency is low, and the used abrasives have to be treated. In this study, which is aimed at solving these problems, a novel medium of silicone gel, consisting of ferromagnetic particles and abrasives, is developed, and the effect of this medium is assessed on the basis of Taguchi's experimental method. The workpiece is a tungsten carbide steel and the surface roughness after magnetic abrasive polishing using the silicone gel is evaluated.

유연성 공구를 가진 자기연마는 고경도 소재 및 자유곡면 형상 표면의 나노메터급 가공이 가능한 강점을 지닌다. 이러한 자기연마에서 자기연마입자는 시간적, 비용적 측면에서 단순 혼합형 입자가 유리하다. 그러나 단순혼합형 입자는 가공 중 공구로부터 쉽게 이탈하게 되어 가공 시간이 증가 할수록 매우 낮은 가공 효율을 가진다. 따라서 본 연구에서는 단순 혼합형 입자에 오일을 대신하여 실리콘 겔을 매개물로 사용하는 자기연마 입자를 연구하고 그 특성을 분석하였다. 그 결과 자기력 향상과 별개로 입자간 응집력을 높여 입자의 이탈을 줄여 표면거칠기의 향상에 효과가 높음을 확인 하였다. 그리고 실험계획법을 이용하여 고경도 소재인 텅스텐 카바이드의 실리콘 겔 자기연마에서 각 공정변수가 표면거칠기의 향상에 미치는 특성을 평가하고 이를 최적화 하였다.

Keywords

References

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Cited by

  1. Evaluations of Magnetic Abrasive Polishing and Distribution of Magnetic Flux Density on the Curvature of Non-Ferrous Material vol.36, pp.3, 2012, https://doi.org/10.3795/KSME-A.2012.36.3.259
  2. Study on Abrasive Adhesion and Polishing Effect in Wet Magnetic Abrasive Polishing vol.38, pp.8, 2014, https://doi.org/10.3795/KSME-A.2014.38.8.887