• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2022, Vol. 58 ›› Issue (15): 134-143.doi: 10.3901/JME.2022.15.134

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Study on Wear of Grinding Wheel in Ultrasonic Assisted Dry Side Grinding of SiCf/SiC Composites

DONG Zhigang, MA Huaiyao, KANG Renke, YANG Feng, BAO Yan   

  1. Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024
  • Received:2021-12-03 Revised:2022-04-18 Published:2022-10-13

Abstract: The wear of grinding wheel in ultrasonic assisted dry side grinding of SiCf/SiC composite is studied to provide theoretical and technical support for ultrasonic grinding of SiCf/SiC composite.The wear experiments of SiCj/SiC composite ultrasonic assisted dry side grinding wheel are carried out, and the influence of ultrasonic vibration on the wear of grinding wheel is studied.Observing and analyzing the surface of grinding wheel, extracting the wear characteristics of abrasive particles and revealing the wear mechanism of grinding wheel;Counting the wear plane areas of abrasive particles and mastering the wear laws of grinding wheel;The effects of grinding wheel wear and ultrasonic vibration on grinding force, material removal rate and surface roughness are analyzed.The research shows that in ordinary dry side grinding and ultrasonic assisted dry side grinding, the wear of grinding wheel is mainly attritious wear, resulting in flat wear plane and rough wear plane.After the introduction of ultrasonic vibration, the fracture wear increases, including the phenomenon of grit fracture and grit pull-out;There is less debris blockage, but it will produce large abrasive wear plane;The grinding wheel diameter decreases more obviously, the grinding force increases slightly, and the material removal rate decreases;The surface roughness of the workpiece is significantly reduced, and the surface roughness Sa value can be reduced by about 30%.

Key words: SiCf/SiC, ceramic matrix composite, ultrasonic assisted grinding, grinding wheel wear

CLC Number: