中国机械工程2016，Vol.27Issue(15)：2069-2074,6.DOI:10.3969/j.issn.1004-132X.2016.15.015
基于固体润滑剂与原位反应双机制自润滑陶瓷刀具
Self-lubricating Ceramic Cutting Tool with Solid Lubricant-based and a Double-situ Reaction Mechanism
摘要
Abstract
A self-lubricating ceramic cutting tool was produced by the hot pressing vacuum sinte-ring process,with the substrate of Al2 O3/TiB2 and the addition of CaF2 .Meanwhile the dry cutting tests were carried out.In the process of friction and wear test,there were four Al2 O3/TiB2/CaF2 (ABF)materials with different contents of CaF2 .The results show that the friction coefficient of the material decreases with the increase of its contents of CaF2 .The formation of CaF2 in the wear layer of a solid lubricating film during the anti-friction lubricant film played a role,in the cutting tests which were carried out with respect to 45 steel at the speed of 120 m/min,the average friction coefficient of the ABF tools is much lower than that of the normal ceramic knives tool (AG2).And the main reason was the lubricating film which generated by the solid lubricant CaF2 and the situ reaction of TiB2 , when the ABF self-lubricating ceramic tool was cutting under the high speed.Meanwhile,with the in-crease of temperature and the cutting speed,its lubricating effect is improved significantly.关键词
陶瓷刀具/自润滑/摩擦磨损/干切削Key words
ceramic material/self-lubrication/friction and wear behavior/dry cutting分类
通用工业技术引用本文复制引用
刘景文,周后明,周文,邓建新,张高峰,周友行..基于固体润滑剂与原位反应双机制自润滑陶瓷刀具[J].中国机械工程,2016,27(15):2069-2074,6.基金项目
国家自然科学基金资助项目(51375418,51375419) （51375418,51375419）
湖南省自然科学基金资助项目(13JJ8007) （13JJ8007）
