• CN:11-2187/TH
  • ISSN:0577-6686

›› 2008, Vol. 44 ›› Issue (4): 189-194.

• 论文 • 上一篇    下一篇



  1. 南京航空航天大学机电工程学院; 江苏工业学院机械工程系
  • 发布日期:2008-04-15

Character of Flow Field on Turbine Blade with 3-Electrode Feeding Method in Electrochemical Machining

XU Zhengyang;ZHU Di;WANG Lei;SHI Xianchuan   

  1. College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics Department of Mechanical Engineering, Jiangsu Polytechnic University
  • Published:2008-04-15

摘要: 为合理利用流场因素对叶片电解加工的影响,提高叶片电解加工的精度和表面质量,结合自行研制的新型三头进给叶片电解加工机床,建立电解加工流场的数学模型,设计新的“双向进液”的流动形式及适应该流动形式的电解加工夹具,分析气泡率、温度、压力、流速等因素对电解加工的影响。进行叶片电解加工试验,试验表明,流场设计合理,有利于保证加工的稳定性,提高叶片加工质量,并可实现叶片叶身、缘板的全方位电解加工。

关键词: 电解加工, 发动机叶片, 流场, 巴厘线, 参数辨识, 切深模型, 砂轮修整, 声发射信号

Abstract: For making full use of the influence of flow field on blade electrochemical machining (ECM) and improving the accuracy and surface quality of blade, a mathematical model of electrolyte flow in the interelectrode gap is presented and the calculated dis- tributions of several flow parameters such as volumetric gas-phase concentration, temperature, pressure and velocity of electrolyte are also given. A new electrolyte flow mode of “dual directional inlets” flow mode is developed for using the new 3-electrode feeding ECM tool of turbine blade. The clamping fixture for blade machining which applies the flow mode is also designed. The experimental investigations are carried out in order to evaluate the rationality of the designed flow field and the results reveal that the accuracy and surface quality of blade are enhanced.

Key words: Electrochemical machining (ECM), Flow field, Turbine blade, Acoustic emission signal, Ballig, Cutting depth model, Grinding wheel dressing, Parameters identification