China Mechanical Engineering ›› 2022, Vol. 33 ›› Issue (07): 797-803,810.DOI: 10.3969/j.issn.1004-132X.2022.07.005

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Electrochemical Trepanning for Long Thin-walled Blades

ZHANG Xiaobo;ZHU Dong   

  1. College of Mechanical and Electronic Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing,210016
  • Online:2022-04-10 Published:2022-05-04

长窄型薄壁叶片的套料电解加工

张晓博;朱栋   

  1. 南京航空航天大学机电学院,南京,210016
  • 通讯作者: 朱栋(通信作者),男,1982年生,教授、博士研究生导师。研究方向为精密电化学加工、电化学制造数控机床设计等。E-mail:zhudong@nuaa.edu.cn。
  • 作者简介:张晓博,男,1996年生,硕士研究生。研究方向为电化学加工。E-mail:xiao7590@163.com。
  • 基金资助:
    国家自然科学基金(91860135);
    国家科技重大专项(2017-Ⅶ-0004-0097);
    中央高校基本科研业务费专项资金(NE 2017003)

Abstract: In order to realize the machining of long thin-walled blades, the flow form of electrolyte flowing into the blade profile uniformly was designed, and the simulations and comparisons of diversion outflow and the open outflow were performed. The results show that the uniformity and stability of the flow field may be optimized by adding diversion channels. Experiments on the electrochemical trepanning of thin-walled blades were performed, and the machining of thin-walled blades at 1.4 mm/min was realized. The surface roughness values of hubs are decreased from 0.532 μm to 0.307 μm, and the surface roughness values of blades are decreased from 0.816 μm to 0.583 μm.

Key words: thin-walled blade, electrochemical trepanning, flow field simulation, surface roughness

摘要: 为实现长窄型薄壁叶片的套料电解加工,设计了电解液沿叶片轮廓四周进液的流动方式,开展了导流式出液和开放式出液的仿真对比分析,结果表明,导流式出液可以明显改善加工区域内流场的均匀性。开展了薄壁叶片套料电解加工试验研究,在进给速度1.4 mm/min下实现了薄壁叶片的套型加工,轮毂表面粗糙度从0.532 μm 降低至0.307 μm,叶片型面粗糙度从0.816 μm 降低至0.583 μm。

关键词: 薄壁叶片, 套料电解加工, 流场仿真, 表面粗糙度

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