基于NaNO_3电解液的TC4薄板阵列群孔电解加工研究

A Study on Electrolytic Machining of Array Holes on TC4 Sheet Based on NaNO_3 Electrolyte

以NaNO3溶液为电解液,利用掩模电解加工原理,采用大功率脉冲电源进行实验。选择电源占空比、脉冲频率、加工电压、电解液温度4个主要参数进行研究,讨论了在以NaNO3溶液为电解液的情况下,不同的加工参数对加工阵列小孔锥度的影响。实验结果表明,采用NaNO3溶液为电解液,选用适当的电源参数和电解液温度,加工的阵列小孔能够达到较低的锥度,且孔径大小和公差均在设计要求范围内,可用于批量生产加工。

By taking NAN03 solution as an electrolyte and by introducing the principle of mask electrolytic machining and high-power pulsed electric source, this experiment completes the study on four main parameters i.e. selection of power duty cycle, pulse frequency, processing voltage and electrolyte temperature while the impact of different processing parameters to the processing array is reviewed in case of taking NaNO3 solution as the electrolyte. Experimental results show that when using NAN03 solution as the electrolyte with appropriate choice of power parameters and the electrolyte temperature it can be applied to batch processing provided that the array holes to be processed have lower taper and the pore sizes and the tolerances are within the scope of the design requirements.