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Removal characteristics and performance of brick-shape permanent magnet–assisted magnetorheological lapping

  • Yongqiang WangEmail author
  • Zhiqiang Xu
  • Shaohui Yin
ORIGINAL ARTICLE
  • 31 Downloads

Abstract

A brick-shape magnet–assisted magnetorheological (MR) lapping was proposed for ultra-smooth flat surface finish, where a straight ribbon was produced to enhance polishing efficiency. Finite element analysis was performed to understand the magnetic property of the brick-shape magnet. Polishing marks and surface topographies were compared with the removal functions and distributions to reveal effects of translational oscillation, period ratio, work gap, eccentricity and trough speed on surface finish. Trajectories were calculated for kinematical analysis. Polishing performances on K9, sapphire and GaN showed that the polishing area was expanded to 1100 mm2 by the brick-shape magnet. Surface planarity as 1 μm in PV with sub-nanometric roughness were obtained on sapphire, GaN and K9 substrates from removal rates of 0.019, 0.037 and 0.437 μm/min respectively.

Keywords

Magnetorheological lapping Roughness Planarity Removal 

Notes

Funding information

This work was financially supported by the Natural Science Foundation of Hunan province (Grant no. 2018JJ2328), the Foundation of Education Department of the Hunan province (Grant no. 17C1368) and the China Scholarship Council (201808430059). ZQX was funded by the Youth Program of National Natural Science Foundation of China (Grant no. 51605410). SHY was supported by the National Natural Science Foundation of China (Grant no. 51675171).

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.School of Mechanical EngineeringUniversity of South ChinaHengyangPeople’s Republic of China
  2. 2.School of Mechanical and Mining EngineeringThe University of QueenslandQueenslandAustralia
  3. 3.School of Mechanical EngineeringXiangtan UniversityXiangtanPeople’s Republic of China
  4. 4.National Engineering Research Centre for High Efficiency GrindingHunan UniversityChangshaPeople’s Republic of China

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