Investigation on Wire Electrochemical Discharge Micro-Machining

With the development of MEMS, the machining demand and requirements for difficult-to-machine metal micro parts are getting higher. Microelectric discharge machining is an effective method to process difficult-to-machine metals. However, the recast layer caused by high temperatures in microelectric d...

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Main Authors: Weijing Kong, Ziyu Liu, Rudong Zhang, Yongbin Zeng
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:Micromachines
Subjects:
Online Access:https://www.mdpi.com/2072-666X/14/8/1505
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author Weijing Kong
Ziyu Liu
Rudong Zhang
Yongbin Zeng
author_facet Weijing Kong
Ziyu Liu
Rudong Zhang
Yongbin Zeng
author_sort Weijing Kong
collection DOAJ
description With the development of MEMS, the machining demand and requirements for difficult-to-machine metal micro parts are getting higher. Microelectric discharge machining is an effective method to process difficult-to-machine metals. However, the recast layer caused by high temperatures in microelectric discharge machining affects the properties of machined materials. Here, we propose the wire electrochemical discharge micro-machining (WECDMM) and develop a new electrolyte system, which removes the recast layer. In this study, the mechanism of WECDMM was elucidated. The electrolyte was optimized through a comparison experiment, and NaNO<sub>3</sub>-glycol solution was determined as the best electrolyte. The influences of key process parameters including the conductivity of the electrolyte, pulse voltage, pulse-on time and wire feed rate were analyzed on the slit width, standard deviation, the radius of fillet at the entrance of the slit and roughness. Typical microstructures were machined, which verified the machining ability of WECDMM.
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spelling doaj.art-3c35eb5dbee448008980e16cc5edb7972023-11-19T02:12:36ZengMDPI AGMicromachines2072-666X2023-07-01148150510.3390/mi14081505Investigation on Wire Electrochemical Discharge Micro-MachiningWeijing Kong0Ziyu Liu1Rudong Zhang2Yongbin Zeng3College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaCollege of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, ChinaWith the development of MEMS, the machining demand and requirements for difficult-to-machine metal micro parts are getting higher. Microelectric discharge machining is an effective method to process difficult-to-machine metals. However, the recast layer caused by high temperatures in microelectric discharge machining affects the properties of machined materials. Here, we propose the wire electrochemical discharge micro-machining (WECDMM) and develop a new electrolyte system, which removes the recast layer. In this study, the mechanism of WECDMM was elucidated. The electrolyte was optimized through a comparison experiment, and NaNO<sub>3</sub>-glycol solution was determined as the best electrolyte. The influences of key process parameters including the conductivity of the electrolyte, pulse voltage, pulse-on time and wire feed rate were analyzed on the slit width, standard deviation, the radius of fillet at the entrance of the slit and roughness. Typical microstructures were machined, which verified the machining ability of WECDMM.https://www.mdpi.com/2072-666X/14/8/1505micro hybrid machiningwire electrochemical discharge machiningelectrochemicaldischarge
spellingShingle Weijing Kong
Ziyu Liu
Rudong Zhang
Yongbin Zeng
Investigation on Wire Electrochemical Discharge Micro-Machining
Micromachines
micro hybrid machining
wire electrochemical discharge machining
electrochemical
discharge
title Investigation on Wire Electrochemical Discharge Micro-Machining
title_full Investigation on Wire Electrochemical Discharge Micro-Machining
title_fullStr Investigation on Wire Electrochemical Discharge Micro-Machining
title_full_unstemmed Investigation on Wire Electrochemical Discharge Micro-Machining
title_short Investigation on Wire Electrochemical Discharge Micro-Machining
title_sort investigation on wire electrochemical discharge micro machining
topic micro hybrid machining
wire electrochemical discharge machining
electrochemical
discharge
url https://www.mdpi.com/2072-666X/14/8/1505
work_keys_str_mv AT weijingkong investigationonwireelectrochemicaldischargemicromachining
AT ziyuliu investigationonwireelectrochemicaldischargemicromachining
AT rudongzhang investigationonwireelectrochemicaldischargemicromachining
AT yongbinzeng investigationonwireelectrochemicaldischargemicromachining