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| Investigation on precision grinding of PcBN Inserts by vitrified diamond grinding wheels prepared by different processes |
| CHEN Jianli 1，LIU Yibo 1，2，LIU Yang2，WANG Xiongfei2，TIAN Likun 1，2，KONG Shuaifei 1，2 |
| （1.Advanced Technology & Materials Co. Ltd. Beijing 100081, China; 2.Beijing Gang Yan Diamond Products
Company, Beijing 102200, China） |
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Abstract The vitrified bond and related grinding wheel were prepared by melt-quench water method and sol-gel
method respectively. The effects of preparation technology on the phase, linear expansion coefficient, bending
strength and diamond dispersion of the binder were studied. The machining performance of ceramic bond pre‐
pared by different technology on PcBN tool was studied. The results show that SiO2 crystals precipitate in the
binder prepared by melt-quench water method, and the coefficient of SiO2 crystals increases the thermal expan‐
sion coefficient and decreases the bending strength of the binder. The agglomeration of M2.5/5 diamond in
fusion-quenched water bonding method reduces the holding force of the binder on diamond and increase the sur‐
face roughness of PcBN tool grinding.
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Received: 13 July 2022
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Corresponding Authors:
刘一波（1966—），男，教授级高级工程师，主要研究方向为超硬材料及粉末冶金制品的制备与研究。
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2023, Vol. 33 
