论文部分内容阅读
采用电解加工工艺对叶片型面进行加工,可以有效提高发动机叶片加工效率,降低生产成本。针对GH4169G合金叶片型面,开展了精密振动电解加工试验研究。结果表明:高频脉冲电流和阴极机械振动具有改善极间流场特性、降低阳极钝化和阴极的产物吸附的作用,可以大幅改善加工效果;采用参数组加工电压15V、阴极振动频率25Hz、开通角度Ra 150°~195°、脉冲频率3000Hz时,获得最优的型面加工质量,型面轮廓度为-0.012~+0.013mm,表面粗糙度值为0.51μm,证明精密振动电解加工工艺满足叶片型面的加工要求。
Electrolytic processing of the blade surface processing, can effectively improve engine blade processing efficiency and reduce production costs. For the GH4169G alloy blade profile, carried out a precision vibrating electrolytic machining experimental study. The results show that the high frequency pulse current and the mechanical vibration of the cathode have the characteristics of improving the flow field between the electrodes and reducing the anode passivation and product adsorption of the cathode, which can greatly improve the processing effect. The processing parameters are set as follows: voltage 15V, cathode vibration frequency 25Hz, Angle Ra 150 ° ~ 195 °, the pulse frequency of 3000Hz, the best surface finish quality, profile profile of -0.012 ~ +0.013 mm, the surface roughness value of 0.51μm, the proof of precision vibration electrolysis process to meet the blade Surface processing requirements.