氮化硅陶瓷柱塞套油孔的超声振动加工  

The Ultrasonic Vibration Processing of Oil Holes in Silicon Nitride Ceramic Plunger Sleeve

作　　者：郭昉[1] 张保国[1] 田欣利[1] 王健全[1] 李富强[1] 毛亚涛[1] 

机构地区：[1]装甲兵工程学院再制造技术重点实验室,北京100072

出　　处：《材料工程》2013年第3期22-26,共5页Journal of Materials Engineering

基　　金：国家自然科学基金项目(51075309)

摘　　要：有限元分析表明,与金属柱塞偶件相比,性能良好的热压烧结氮化硅陶瓷柱塞偶件具有十分优异的性能,能够有效地提高发动机油泵的性能,然而陶瓷材料的高硬度和脆性使其加工特别困难,特别是小孔的加工更加困难。在综合分析小孔加工方法的基础之上,选用超声振动加工技术对氮化硅陶瓷柱塞套油孔进行加工,制定了柱塞套的加工工艺规程,设计了专用夹具和加工工具,对进出油孔和润滑油孔的加工进行了详细介绍。通过数码显微镜观察发现,超声振动加工得到的陶瓷柱塞套油孔质量非常好,与金属柱塞套油孔相比,陶瓷柱塞套油孔的入口质量更好。Finite element analysis showed that hot-press sintered silicon nitride ceramic plunger parts, which with good performances, could effectively improve the performance of the engine oil pump com- pared with the metal plunger. However, high hardness and brittleness of ceramic materials made it particularly difficult to process ceramics, especially in the processing of holes. Based on analyzing the processing methods of holes, the ultrasonic vibration processing technique was used to process holes in silicon nitride ceramic plunger sleeve, developed the process planning of sleeve, designed the special fixtures and tools, and then described the processing of inlet and outlet oil holes and lubrication holes in detail. Observed by digital microscope, the quality of holes machined by ultrasonic vibration pro- cessing is very perfect compared with the holes in metal plunger sleeve.

关 键 词：氮化硅陶瓷 柱塞偶件 超声振动加工 有限元分析 

分 类 号：TB321[一般工业技术—材料科学与工程]