航空发动机圆板槽壁重熔层去除研究  

Research on remelting layer removal of circular plate groove wall of aeroengine

作　　者：吴冬[1] 张亚光 高军帅 米天健 郝娟[2] 姚特力 Wu Dong;Zhang Yaguang;Gao Junshuai;Mi Tianjian;Hao Juan;Yao Teli(Aviation Maintenance Engineering College,Xi'an Aeronautical Polytechnic Institute,Xi'an 710089,China;School of Materials Science and Engineering,Xi'an University of Technology,Xi'an 710048,China)

机构地区：[1]西安航空职业技术学院航空维修工程学院,陕西西安710089 [2]西安理工大学材料科学与工程学院,陕西西安710048

出　　处：《电镀与精饰》2023年第11期9-17,共9页Plating & Finishing

基　　金：国家自然科学基金(51306126);陕西省自然科学基金项目(2021JQ-889);陕西省教育厅2021年度科研计划(21JP057);陕西省高校青年创新团队(2020061)。

摘　　要：以GH600高温镍铬铁基固溶强化高温合金板材和电火花制作圆板月牙卡槽为试样,基于磁力研磨方法,创新通过环氧AB胶喷胶和陶瓷磨粒喷砂复合技术制备磁性金属基陶瓷固结磨粒,实现圆板卡槽槽壁重熔层的高效自动化均一去除。通过抛光过程中的磨削量数据分析,基于外圆切入表面磨削理论揭示磁力研磨系统下材料表面去除机理和参量间量化关系。研究发现磁力研磨去除量随时间具有极限值,传统磁针磨粒无法应对较硬的高温合金重熔层的去除,金属基陶瓷固结磨粒增强了传统磁力研磨对加工材料硬度的限制并提升磨削效率近10倍,对高温合金研磨6 h后磨削量双边可达0.2 mm并充分去除重熔层,满足尺寸公差要求,研磨后无表面缺陷和元素污染,解决了航空发动机圆板槽壁重熔层去除这一工程界关键难题。丰富了磁力研磨系统中的微切削机理并揭示去除机理是切削转变为滑擦,去除量h随时间t呈反比函数。The GH600 high temperature nickel chromium iron base solid solution strengthened hightemperature alloys plate and the circular plate crescent slot made by electric spark were used as samples.Based on the magnetic abrasive grinding method,the magnetic metal base ceramic consolidated abrasive particles were innovatively prepared by the composite technology of epoxy AB glue spraying and ceramic abrasive sand blasting,to achieve the efficient and automatic uniform removal of the remelting layer on the circular plategroove wall.Through the analysis of grinding quantity data in the polishing process,the material surface removal mechanism and the quantitative relationship between the parameters under the magnetic abrasive grinding finishing system are revealed based on the cylindrical cut in surface grinding theory.The research found that the removal amount of magnetic abrasive grinding has a limit value over time.The traditional magnetic needle abrasive grains cannot cope with the removal of the harder remelting layer of high-temperature alloys.The metal matrix ceramic consolidated abrasive grains have enhanced the limit of traditional magnetic abrasive grinding on the hardness of processing materials and improved the grinding efficiency by nearly 10 times.For high-temperature alloys,after 6 h of grinding,the removal amount of grinding can reach 0.2 mm on both sides,and the remelting layer can be fully removed and meet the dimensional tolerance requirements,There are no surface defects and element contamination after grinding,which solves the key problem of remelting layer removal from circular plate of aeroengine,enriches the micro cutting mechanism in the magnetic abrasive finishing system and reveals that the removal mechanism is that cutting changes into sliding,the removal amount h is an inverse function of time t.

关 键 词：高温合金 航空发动机圆板 重熔层 磁力研磨 固结磨粒 

分 类 号：V21[航空宇航科学与技术—航空宇航推进理论与工程]