航空发动机弯管内表面磁力研磨技术的研究进展  

Research progress on magnetic grinding technology for the inner surface of aircraft engine bend

作　　者：肖春芳[1] 韩冰[2] 谢臻 Xiao Chunfang;Han Bing;Xie Zhen(Hunan Aircraft Maintenance Engineering Technology Research Center,Changsha Aeronautical Vocational and Technical College,Changsha 410124,China;School of Mechanical Engineering and Automation,University of Science and Technology Liaoning,Anshan 114051,China;Sheet Metal Factory of AVIC Chengdu Engine Co.,Ltd,Chengdu 610503,China)

机构地区：[1]长沙航空职业技术学院湖南省飞机维修工程技术研究中心,湖南长沙410124 [2]辽宁科技大学机械工程与自动化学院,辽宁鞍山114051 [3]中国航发成都发动机有限公司钣金分厂,四川成都610503

出　　处：《电镀与精饰》2024年第12期91-100,共10页Plating & Finishing

基　　金：湖南省自然科学基金资助项目(2024JJ8073)。

摘　　要：航空发动机弯管的内表面质量影响发动机的整体性能和安全。磁粒研磨具有无须专用加工设备、精度高、柔性和仿形性好、易于实现自动化等优势,有望成为航空发动机弯管内表面精密加工的主要技术途径。介绍了磁粒研磨的方法和机理,总结了聚磁装置对磁粒研磨的影响,各因素及交互作用因素对表面粗糙度和材料去除的影响。提出了基于开槽磁极的离散法提高磁粒研磨精度和效率和基于遗传算法优化的BP神经网络预测最佳航空发动机弯管磁粒研磨工艺参数的优化思路,并归纳了磁粒研磨效果评价方法。列举了磁粒研磨技术在航空发动机弯管内表面精密加工中的应用,并对航空发动机弯管内表面磁力研磨技术的发展趋势进行了展望。As a core component of the aviation engine piping system,the quality of the inner surface of the bent pipe determines the overall performance and safety of the engine.Magnetic abrasive grinding has advantages such as no need for specialized processing equipment,high precision,good flexibility and profiling,and easy automation.It is expected to become the main technical approach for precision machining of the inner surface of aircraft engine bent pipes.It introduced the methods and mechanisms of magnetic particle grinding,summarizes the effects of magnetic pole shape,magnetic pole head taper,and magnetic pole slotting on magnetic particle grinding,as well as the effects of process parameters such as working gap,speed,mixing ratio,and mesh number on surface roughness and material removal.It was proposed that discrete method based on slotted magnetic poles to improve the precision and efficiency of magnetic particle grinding.It was proposed that optimization approach based on genetic algorithm optimized BP neural network to predict the optimal magnetic particle grinding process parameters for aircraft engine bend pipes.The evaluation method for magnetic particle grinding effect was summarized.It listed the application of magnetic particle polishing technology in precision machining of the inner surface of aircraft engine bends,and looked forward to the development trend of magnetic particle polishing technology for the inner surface of aircraft engine bends.

关 键 词：航空发动机弯管 磁粒研磨机理 工艺参数 效果评价 发展趋势 

分 类 号：TG580.68[金属学及工艺—金属切削加工及机床]