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Preparation and Performance Analysis of Porous Composite-bonded CBN Grinding Wheels
DING Wenfeng * #
College of Mechanical and Engineering School, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
*Correspondence author
#Submitted by
Subject:
Funding: the Ph.D. Program Foundation of Ministry of Education of China （No.No. 20103218120026）, Natural Science Foundation of China （No.No. 51005116）
Opened online:12 June 2012
Accepted by: none
Citation: DING Wenfeng.Preparation and Performance Analysis of Porous Composite-bonded CBN Grinding Wheels[OL]. [12 June 2012] http://en.paper.edu.cn/en_releasepaper/content/4480897
 
 
Fabrication experiments of porous composite-bonded CBN wheels are conducted using alumina (Al2O3) bubbles, CBN grains, Cu-Sn-Ti alloy and graphite particles. Influence of sintering parameters and porosity on the bending strength of the CBN composite blocks is measured and analyzed. Dressing and grinding practice is carried out. The results show that the optimal sintering temperature of the CBN composite blocks is 880℃. When the porosity of composite blocks is 8-45 %, the strength reaches 51-103 MPa. Regular shape of the pores is obtained after dressing. Both the grinding force and grinding temperature of the composite-bonded CBN wheel are lower than that of the vitrified one under the same grinding condition, which indicates the better grinding performance of the new-type porous composite-bonded CBN wheel.
Keywords:sintering; porous CBN wheel; alumina bubbles; bending strength; grinding performance
 
 
 

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