基于界面酸化的微细电解加工用脉冲电源设计

doi:10.16180/j.cnki.issn1007-7820.2021.08.007

电子科技 ›› 2021, Vol. 34 ›› Issue (8): 37-42.doi: 10.16180/j.cnki.issn1007-7820.2021.08.007

基于界面酸化的微细电解加工用脉冲电源设计

田元波,刘桂礼,孔全存

北京信息科技大学仪器科学与光电工程学院,北京 100192

收稿日期:2020-04-10 出版日期:2021-08-15 发布日期:2021-08-17
作者简介:田元波(1991-),男,硕士研究生。研究方向:智能检测与信息处理。|刘桂礼(1964-),男,教授。研究方向:光机电一体化与智能系统。|孔全存(1976-),男,博士,高级实验师。研究方向:微细电加工。
基金资助:
国家自然科学基金(51675054)

Design of Pulse Power Supply for Micro ECM Based on Interface Acidification

TIAN Yuanbo,LIU Guili,KONG Quancun

School of Instrument Science and Opto-Electronics Engineering,Beijing Information Science and Technology University, Beijing 100192,China

Received:2020-04-10 Online:2021-08-15 Published:2021-08-17
Supported by:
National Natural Science Fundation of China(51675054)

摘要/Abstract

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^-4mm³·s^-1提升到6.55×10^-4 mm³·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。

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

Abstract:

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 NaNO₃ electrolyte. The experiment results show that compared with the two-electrode pulse power, the erosion rate increases from 3.21×10^-4 mm³·s^-1 to 6.55×10^-4 mm³·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.

Key words: micro electrochemical machining, interface acidification, pulse power supply, pulse interval period, machining locality, erosion rate, electrolyte, stainless steel, array hole

中图分类号:

TN784+.1

田元波,刘桂礼,孔全存. 基于界面酸化的微细电解加工用脉冲电源设计[J]. 电子科技, 2021, 34(8): 37-42.

TIAN Yuanbo,LIU Guili,KONG Quancun. Design of Pulse Power Supply for Micro ECM Based on Interface Acidification[J]. Electronic Science and Technology, 2021, 34(8): 37-42.

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基于界面酸化的微细电解加工用脉冲电源设计

Design of Pulse Power Supply for Micro ECM Based on Interface Acidification

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