摘要
针对先进陶瓷材料的切割加工中存在着切割效率低、工具磨损快等问题,本文通过用金刚石压齿锯片加工氧化铝陶瓷的实验,研究锯片的磨损失效机制,探讨高效低成本的先进陶瓷切割技术。实验中用金刚石压齿锯片在不同加工条件下对氧化铝陶瓷材料和玉石进行切割加工,测量切割法向力和切向力,并跟踪锯片刃口形貌的变化及其磨损过程。实验结果表明,由于材料性质的差异,氧化铝陶瓷的切割力和力比均要明显大于玉石。锯片的磨损是由于该类型锯片的刃口上金刚石磨料浓度太低,而且结合剂的把持力不足导致金刚石大量脱落而失效的,并造成金属基体与工件间的摩擦加剧,切割比能也相应增加。
Because of the low efficiency and fast tool wear when sawing advanced ceramics, in this paper, a diamond notched-rim-blade was used for sawing alumina ceramic to evaluate the wear mechanism and to search for a cost-efficient sawing technology. In the experiment, alumina ceramic and jade were sawn under different machining conditions. The normal and tangential sawing forces were measured. The topography of the notchedrim-blade edge was observed during the wear process. From the results, it can be found that sawing forces and force ratio tor alumina ceramic were both larger than gem. The wear of the diamond notched-rim-blade during ceramic sawing was due to low diamond concentration on the blade edge and poor retention of bond to diamond, which led to serious friction between the core and workpiece. Therefore, the specific sawing energy increased correspondingly.
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2008年第6期21-25,共5页
Diamond & Abrasives Engineering
基金
厦门市科技计划项目(3502Z20073042)
福建省科技计划项目(2006F1007)
关键词
金刚石压齿锯片
氧化铝陶瓷
比能
磨损
diamond notched-rim-blade
alumina ceramic
specific energy
wear
