Journal of Northeastern University Natural Science ›› 2020, Vol. 41 ›› Issue (12): 1721-1726.DOI: 10.12068/j.issn.1005-3026.2020.12.008

• Mechanical Engineering • Previous Articles     Next Articles

Preparation and Grinding Performance of High Magnetic Field Vitrified Bond CBN Grinding Wheel

SHI Ying, WANG Xue-zhi, YU Tian-biao, WANG Wan-shan   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China.
  • Received:2019-12-15 Revised:2019-12-15 Online:2020-12-15 Published:2020-12-22
  • Contact: SHI Ying
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Abstract: In view of the random grain orientation and low strength of vitrified bond CBN wheel, a high magnetic field was introduced into the preparation process of grinding wheel. During the preparation process, the Ni-plating CBN abrasive grains were added. It was found that the appropriate magnetic field strength could achieve the deflection of the Ni-plating CBN. In addition, the appropriate magnetic field strength is conducive to improving the strength of vitrified CBN composite materials. When the magnetic field strength was 6 T, the bending strength of vitrified CBN composite materials was the highest, and the value reached 79.5 MPa. Finally, it is proved that the specific grinding energy of CBN grinding wheel with high magnetic field was slightly lower than that of ordinary vitrified bond grinding wheel when grinding titanium alloy TC4. This research may have important practical significance for improving the properties of CBN grinding wheel and exploring new preparation technology.

Key words: high magnetic field, vitrified bond, CBN, grinding wheel, bending strength

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