摘要
本文研究了利用原位凝固剂的水化反应对陶瓷结合剂CBN油石进行原位凝固成型,试验结果表明:当油石中原位凝固剂含量超过4wt%时,可以实现CBN油石的原位凝固,油石中原位凝固剂含量越高,油石凝固的时间越短,凝固后体积收缩率越小,当原位凝固剂含量超过8wt%时,油石凝固后体积不再收缩。对油石的烧结体的显微结构研究表明:当油石中原位凝固剂含量适当时,烧结后的油石孔径分布较干压样和注浆样窄,显微结构更加均匀,油石硬度波动小。
Molding technology is a key factor that affects the performance of honing stone. This paper studied the in-situ consolidation of vitrified bond CBN honing stone by means of the hydrated reaction of in-situ peptizer. The result indicated that when the in-situ peptizer content surpassed 4wt%, it made the CBN honing stone in-situ molded. With higher content of the in-situ peptizer, the coagulation time of the CBN honing stone decreased and volume shrinkage rate of the CBN honing stone got smaller, when the in-situ peptizer content surpassed 8wt% , there is no more volume shrinkage of CBN honing stone. Studying on the mierostructure of the sintering CBN honing stone revealed that with suitable content of the in-situ peptizer, the pore distribution tended to be narrow, the microstructure was more uniform and the hardness fluctuation was smaller than pressing molding and injected molding.
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2008年第5期56-59,共4页
Diamond & Abrasives Engineering
基金
湘潭大学低维材料及其应用技术教育部重点实验室开放基金(KF200605)
湖南大学SIT项目
关键词
陶瓷结合剂
原位凝固
CBN油石
孔隙率
耐火度
vitrified bond
in-situ consolidation
CBN honing stone
porosity
refractoriness
