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电解加工中阴极流场设计合理是保证加工正常进行的前提。针对数控展成电解精加工整体叶轮时使用的直线刃阴极流场设计,通过对阴极几何模型的建立,导出了数值模拟时所需要的数值模型。由电解加工过程中电解液运动为湍流状态,确定了采用标准k-ε模型对稳定加工状态时电解液流道中的流场进行了数值模拟,分析了流道结构对电解液流动速度的影响,其结果与试验结果基本吻合,表明采用流体动力学方法对电解加工中阴极流场设计进行理论指导是可行的。
Electrolytic cathode flow field design is reasonable to ensure the normal processing of the premise. Aiming at the design of the linear flow field of the linear blade used in the electrolytic finishing of the NC impeller, a numerical model for the numerical simulation was derived through the establishment of the cathode geometry model. Electrolyte processing was turbulent during the electrolysis process. It was confirmed that the standard k-ε model was used to numerically simulate the flow field in the electrolyte during steady state processing. The effect of flow channel structure on the electrolyte flow rate was analyzed. The results are in good agreement with the experimental results, which shows that it is feasible to use the hydrodynamic method to theoretically guide the cathode flow field in the electrolytic machining.