湖南大学学报（自然科学版）2023，Vol.50Issue(12)：112-121,10.DOI:10.16339/j.cnki.hdxbzkb.2023312
结合剂分散性对陶瓷结合剂cBN固结磨具微观结构和性能的影响
Effect of Vitrified Bond Dispersion on Microstructure and Properties of Vitrified Bond cBN Grinding Tools
摘要
Abstract
The effect of the concentration of silane coupling agent KH560 on the dispersion and placement stability of the vitrified bond was investigated,together with the mechanism of modification.Furthermore,cBN grinding tools were prepared with vitrified bond of different dispersion,and the influence of modification methods of vitrified bond and storage time on the micro-mechanism,mechanical properties and grinding performance of cBN grinding tools were studied.The results show that when the KH560 addition was 3.0％,the vitrified bond powder displayed the best dispersion and placement stabilization.The microstructure of CBN abrasive tools prepared by using 3.0％KH560 modified vitrified bond powder for 360 h was uniform,and the bending strength and Rockwell hardness reached the maximum values of 189.3 MPa and 100.15 HRB,which were 12.72％and 5.82％higher than those of unmodified cBN grinding tools respectively.The surface roughness value of the workpiece was 0.054 μm when using this grinding tool to honed the inner holed of bearing steel,which was 48.6％lower than that of the workpiece processed by unmodified cBN grinding tools.关键词
陶瓷结合剂/表面改性/cBN磨料/力学性能/磨削性能Key words
vitrified bond/surface modification/cBN abrasive/mechanical properties/grinding performance分类
金属材料引用本文复制引用
刘小磐,贺洛霆,鄢永高,潘晓毅,陈帅鹏,岳嵩..结合剂分散性对陶瓷结合剂cBN固结磨具微观结构和性能的影响[J].湖南大学学报（自然科学版）,2023,50(12):112-121,10.基金项目
国家自然科学基金资助项目(751229124),National Natural Science Foundation of China(751229124) （751229124）
广西重点研发计划项目(AB20159010),Key Research and Development Project of Guangxi(AB20159010) （AB20159010）
