深小孔电解加工阴极侧壁绝缘层制备及试验  

Preparation and Experiment of Cathode Side Wall Insulation in Deep-Hole Electrochemical Machining

作　　者：钟紫鹏 苏国康 李俊飞 王瑞祥 张永俊[1,2] ZHONG Zipeng;SU Guokang;LI Junfei;WANG Ruixiang;ZHANG Yongjun(Guangdong University of Technology,Guangzhou 510006,China;Guangzhou Key Laboratory of Nontraditional Machining and Equipment,Guangzhou 510006,China)

机构地区：[1]广东工业大学,广州510006 [2]广州市非传统制造技术及装备重点实验室,广州510006

出　　处：《航空制造技术》2024年第12期102-109,共8页Aeronautical Manufacturing Technology

基　　金：广东省科技计划(2017B090913004)。

摘　　要：航空发动机零部件中存在大量深小孔,不仅孔径小、深径比大,而且要求孔表面没有再铸层,这些特点给孔的加工带来了很多困难。电解加工是一种有效的加工方法,针对大深径比小孔电解加工所用的阴极侧壁绝缘层制备困难,且使用过程中容易损坏的问题,尝试了多种材料、多种方式的绝缘层制备方法,并对其在加工过程中的性能稳定性进行了试验研究,最终提出了一种基于弹性石英毛细管的新型多层复合绝缘层制备方法,并借助该方法制作管阴极,在不锈钢材料上成功加工出直径1.1 mm、深径比达181的深小孔。There are a lot of deep holes in aero-engine parts,which are not only small aperture,large aspect ratio,but also require no recast layer on the surface of the hole.These characteristics bring a lot of difficulties to the machining of the hole.Electrochemical machining(ECM) is an effective machining method.In view of the difficulties in preparing the side wall insulating layer of cathode used in ECM of small holes with extra large aspect ratio and the problems that it is easy to be damaged in the process of use,a variety of materials and methods for preparing the insulating layer were tried,and the performance stability during the processing was experimentally studied.Finally,a new preparation method of multilayer composite insulating layer based on fused silica capillary column was proposed,and the tube cathode was fabricated by this method.A deep hole with a diameter of 1.1 mm and a depth to diameter ratio of 181 was successfully fabricated on stainless steel material.

关 键 词：大深径比小孔 电解加工 侧壁绝缘 弹性石英毛细管 不锈钢 

分 类 号：TG662[金属学及工艺—金属切削加工及机床] V263[航空宇航科学与技术—航空宇航制造工程]