聚晶金刚石刀具低温冷却铣削SiC/SiC复合材料磨损试验研究
Wear Experimentand Reserch of Poly crystalline Diamond Tools on SiC/SiC Composite Milling under Cryogenic Cooling Condition
王凯 1徐亮 1王新永 1裴天河 1魏金花 1钟扬 1闫卫东 1王松 1金恩泽 1李军平 1赵国龙 2年智文2
作者信息
- 1. 航天材料及工艺研究所先进功能复合材料技术重点实验室,北京 100076
- 2. 南京航空航天大学机电学院,江苏南京 210016
- 折叠
摘要
采用超硬聚晶金刚石(PCD)刀具对SiC/SiC陶瓷基复合材料进行干式和低温液氮冷却铣削试验研究,获得PCD刀具在干式和低温液氮冷却铣削条件下的前刀面和后刀面磨损形貌;分析PCD刀具在干式和低温液氮冷却铣削条件下的主要磨损形式,测得PCD刀具在干式和低温液氮冷却铣削条件下的刀具使用寿命.研究表明:在干式铣削条件下,PCD刀具前刀面的主要磨损形式为刀尖磨钝和崩刃;而在低温液氮冷却铣削条件下,PCD刀具前刀面的主要磨损形式为刀尖磨钝和微剥落;与干式铣削条件相比,PCD刀具在低温液氮冷却铣削条件下寿命提高约71.4％.
Abstract
Polycrystalline diamond(PCD)tools were used to mill SiC/SiC composite under dry and cryogenic cooling conditions,obtaining wear morphology of the rake and flank surfaces on the PCD tool.The wear modes of the PCD tools were analyzed,and the tool service life was measured.The reserch results show that the major wear modes of the PCD tools are tool nose fracture and edge tripping under the dry milling condition,while the major wear modes are tool nose fracture and spalling under the cryogenic cooling condition.To compare with the PCD tool under the dry cutting condition,the usage life of the PCD tools under the cryogenic cooling condition increases up to 71.4％.
关键词
SiC/SiC复合材料/干式铣削/低温液氮冷却铣削/PCD刀具/磨损形貌/磨损形式Key words
SiC/SiC composites/dry milling/cryogenic cooling milling/PCD tool/wear morphology/wear mode引用本文复制引用
基金项目
先进功能复合材料技术重点实验室开放基金项目(6142906210610)
出版年
2024
国家科技期刊平台
NSTL
万方数据