纳米氧化锆增韧氧化铝基陶瓷刀具切削HT200时的切削性能研究  

Study on Cutting Performance of Nano-Scale Zirconia Toughening Alumina Matrix Ceramic Tool Materials When Cutting HT200

作　　者：钟金豹[1] 黄传真[2] 

机构地区：[1]内蒙古科技大学机械工程学院,内蒙古包头014010 [2]山东大学机械工程学院,济南250061

出　　处：《组合机床与自动化加工技术》2015年第2期24-26,29,共4页Modular Machine Tool & Automatic Manufacturing Technique

摘　　要：文章研究了陶瓷刀具A15Zc和A20Z(c+m)在不同切削速度下切削HT200时的切削性能。通过对比后刀面磨损量,对比了两种刀具在不同切削速度下的抗磨损能力;并与另外一种已商业化的氧化铝基陶瓷刀具SG4(Al2O3/(W,Ti)C)作对比,探索了两种刀具合适的加工条件。通过对刀具前后刀面磨损形貌SEM研究,得出了两种刀具在两种切削速度下的主要磨损形态和主要磨损机理。该文对纳米相变增韧陶瓷刀具的研制及应用具有较大指导意义。Compared to the commercial ceramic tool SG4, the cutting performance of nano-scale ZrO2 toughening Al2O3 matrix ceramics tool materials, such as A15Zc and A20Z（c＋m）, in machining cast iron HT200. When machining cast iron HT200, the wear resistance of A15Zc is better than that of A20Z（ c＋m）, and tool flank wear width of A15Zc and A20Z（c＋m） at the low speed of 115m/min is bigger than that at the high cutting speed of 320m/min. The wear patterns at the low cutting speed are tool wear on rake face and flank as well as notch wear, and the wear mechanisms arre bonding and abrasive wear. The wear patterns at the high cutting speed are tool wear on flank and notch wear, and the wear mechanisms are fa-tigue and abrasive wear.

关 键 词：陶瓷刀具 切削性能 磨损机理 

分 类 号：TH162[机械工程—机械制造及自动化] TG711[金属学及工艺—刀具与模具]