摘要
连续碳化硅纤维增强碳化硅基复合材料(SiC_(f)/SiC)具有密度低、模量高、强度高、耐高温和抗氧化等优点,在航空航天领域具有广阔的应用前景。针对SiC_(f)/SiC复合材料加工过程中易产生纤维断裂、翘曲和拔出等问题,采用电镀金刚石磨头对SiC_(f)/SiC复合材料进行超声辅助磨削试验研究,测量并对比超声辅助磨削与普通磨削在不同磨削参数下磨削力和磨削力比的变化,观察加工表面质量。结果表明:超声辅助磨削能显著降低SiC_(f)/SiC的磨削力比并提升表面质量,但当磨削速度不断增加时,超声辅助加工的效果减弱并趋于普通磨削。
Silicon carbide ceramic matrix composite(SiC_(f)/SiC) has the advantages of low density, high modulus, high strength, high temperature resistance, oxidation resistance and so on, and has a broad application prospect in the aerospace field.In order to solve the problems of fiber fracture, warping and pull-out in the process of machining SiC_(f)/SiC composites, ultrasonic assisted grinding of SiC_(f)/SiC composites is carried out by using electroplated diamond grinding rod.The changes of grinding force and grinding force ratio between ultrasonic assisted grinding and ordinary grinding under different grinding parameters are measured and compared, and the machined surface quality is observed.The results show that the grinding force ratio of SiC_(f)/SiC can be significantly reduced and the surface quality can be improved by ultrasonic assisted grinding.However, when the grinding speed increases, the effect of ultrasonic assisted grinding becomes weaker and tends to ordinary grinding.
作者
王学智
丛铭
刘清遥
王奔
王明海
Wang Xuezhi;Cong Ming;Liu Qingyao;Wang Ben;Wang Minghai(School of Mechatronics Engineering,Shenyang Aerospace University,Shenyang 110136,China;不详)
出处
《工具技术》
北大核心
2023年第3期9-14,共6页
Tool Engineering
基金
辽宁省自然科学基金(2021-MS-263)
辽宁省教育厅青年科技人才“育苗”项目(JYT2020132)
沈阳航空航天大学航空制造工艺数字化国防重点学科实验室开放基金资助项目(SHSYS202101)。
