摘要
高频脉冲电源是实现精密微细电解加工的重要因素之一。为兼顾加工定域性及提升工件蚀除速率,基于界面酸化特性机理,文中研制了一种能实现脉间期内向工件/电解液界面加酸特性的高频脉冲电源。利用研制的高频脉冲电源,进行微细电解加工实验。采用0.5 mol·L^(-1) NaNO3电解液,在0.5 mm厚的304不锈钢上加工阵列孔。实验结果显示,采用研制的高频脉冲电源加工阵列孔,蚀除速率由双电极脉冲电源的3.21×10^(-4) mm^(3)·s^(-1)提升到6.55×10^(-4) mm^(3)·s^(-1),工件蚀除速率得到明显提高,证明了所设计脉冲电源的可靠性。
The high-frequency pulse power supply is one of the important factors to achieve precise micro electrochemical machining.In order to take into account the machining locality and increase the erosion rate of workpiece,the study develops a high-frequency pulse power supply based on interface acidification mechanism,which is able to add acid to the workpiece/electrolyte interface during the pulse interval period.The micro-electrochemical machining experiment is carried out using the developed high-frequency pulse power supply.The pulse power supply is utilized to process array holes on 0.5mm thick 304 stainless with 0.5 mol·L^(-1) NaNO 3 electrolyte.The experiment results show that compared with the two-electrode pulse power,the erosion rate increases from 3.21×10^(-4) mm^(3)·s^(-1) to 6.55×10^(-4) mm^(3)·s^(-1) by using high-frequency pulse power to process array holes.The workpiece erosion rate is significantly improved,which proves the reliability of the designed pulse power supply.
作者
田元波
刘桂礼
孔全存
TIAN Yuanbo;LIU Guili;KONG Quancun(School of Instrument Science and Opto-Electronics Engineering,Beijing Information Science and Technology University, Beijing 100192,China)
出处
《电子科技》
2021年第8期37-42,共6页
Electronic Science and Technology
基金
国家自然科学基金(51675054)。
关键词
微细电解加工
界面酸化
脉冲电源
脉间期
加工定域性
蚀除速率
电解液
不锈钢
阵列孔
micro electrochemical machining
interface acidification
pulse power supply
pulse interval period
machining locality
erosion rate
electrolyte
stainless steel
array hole
