摘要
原位自生TiB_2/Al复合材料具有密度小,比强度高,比模量大等特点,在航空航天领域具有广泛的应用前景。为探索原位自生TiB_2/Al复合材料的磨削加工性能,选用单晶刚玉SA砂轮、白刚玉WA砂轮和CBN砂轮在不同磨削参数下对TiB_2/Al复合材料进行磨削试验。首先研究了砂轮材质、转速、工件速度、磨削深度对工件表面粗糙度的影响规律;其次通过对工件表面形貌、磨屑形态、砂轮磨损的观测分析,探索了原位自生TiB_2/Al复合材料磨削表面成形机制;最后基于试验数据,给出了TiB_2/Al复合材料磨削工艺参数优选域。本研究可为颗粒增强金属基复合材料磨削加工提供基础理论支撑。
In-situ TiB2/Al composites have extensive application prospect in the field of aeronautics and astronautics due to their outstanding mechanical properties,such as low density,high specific strength and high specific modulus.Grinding experiments were conducted to analyze the grinding performance of in-situ TiB2/Al composites in different grinding parameters by using single alumina wheel,white alumina wheel,and cubic boron nitride wheel respectively.The influence of grinding wheel,wheel speed,workpiece speed,and depth of cut on surface roughness were investigated.Moreover,the topography of grinding surface,grinding chips,and the wear on grinding wheel were observed to analyze the surface forming mechanism of in-situ TiB2/Al composites.Finally,the optimal grinding parameters were selected based on the experimental date.The research contents and conclusions will provide theory support for in-situ TiB2/Al composite grinding process.
作者
张永强
周超羡
林坤阳
汪文虎
蒋睿嵩
ZHANG Yongqiang;ZHOU Chaoxian;LIN Kunyang;WANG Wenhu;JIANG Ruisong(AECC Commercial Aircraft Engine Co., Ltd., Shanghai 200126, China;Key Laboratory of Contemporary Design and Integrated Manufacturing, Northwestern Polytechnical University,Xi’an 710072, China)
出处
《航空制造技术》
2017年第17期101-106,共6页
Aeronautical Manufacturing Technology
作者简介
通讯作者：蒋睿嵩，副教授，研究方向为航空发动机复合材料切削及涡轮叶片精密成形技术，E-mail：jiangrs@nwpu.edu.cn。
