摘要
本文采用单层钎焊金刚石镶块式砂轮磨削氧化锆陶瓷，并对其表面完整性进行实验研究。包括：采用单因素实验法测定其表面粗糙度，并通过SEM对其表面／亚表面损伤进行观察，得出以下结论：（1）氧化锆陶瓷材料的去除方式以显微塑性去除为主，同时存在脆性去除。去除过程中产生大量由脆性断裂形成的凹坑及表面／亚表面微裂纹；（2）氧化锆陶瓷的表面粗糙度随砂轮速度增加呈下降趋势，随工件速度及磨削深度的加大呈上升趋势。本文试验加工所得氧化锆陶瓷材料的表面粗糙度范围为：0．12-0．5um。
In this paper, researches were made on the surface integrity of zirconia ground with brazed diamnod wheel. The surface roughness was measured using mono factor method. The surface/subsurface damages were observed by SEM. Based on our experiment results,it can be concluded that, the ground surface of zirconia was generated by the modes of plastic removal and brittle removal, the former was the main mode. Lots of dimples and microcracks appeared on the ground surface because of brittle fracture effect. The ground surface roughness tended to decrease as the wheel speed increased, while it tended to in crease as the feed speed and grinding depth increased. The surface roughness of the ground zirconia reached -. 12 - 0.5 um.
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2008年第5期71-74,共4页
Diamond & Abrasives Engineering
基金
航空科学基金资助项目(H0514-052)
关键词
工程陶瓷
钎焊砂轮
磨削
表面完整性
engineering ceramics
brazed grinding wheel
grinding
surface integrity
