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Experimental Investigation of Discharge Phenomena in Electrochemical Discharge Machining Process

Electrochemical discharge machining (ECDM) is a promising non−traditional processing technology used to machine non−conductive materials, such as glass and ceramic, based on the evoked electrochemical discharge phenomena around the tool electrode. The discharge in ECDM is a key factor that affects t...

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Autores principales: Tang, Weidong, Zhu, Yuhao, Kang, Xiaoming, Mao, Cong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9967572/
https://www.ncbi.nlm.nih.gov/pubmed/36838067
http://dx.doi.org/10.3390/mi14020367
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author Tang, Weidong
Zhu, Yuhao
Kang, Xiaoming
Mao, Cong
author_facet Tang, Weidong
Zhu, Yuhao
Kang, Xiaoming
Mao, Cong
author_sort Tang, Weidong
collection PubMed
description Electrochemical discharge machining (ECDM) is a promising non−traditional processing technology used to machine non−conductive materials, such as glass and ceramic, based on the evoked electrochemical discharge phenomena around the tool electrode. The discharge in ECDM is a key factor that affects the removal of material. Moreover, the discharge current is an important indicator reflecting the discharge state. However, the discharge characteristics remain an open topic for debate and require further investigation. There is still confusion regarding the distinction of the discharge current from the electrochemical reaction current in ECDM. In this study, high−speed imaging technology was applied to the investigation of the discharge characteristics. By comparing the captured discharge images with the corresponding discharge current, the discharge can be classified into three types. The observations of the discharge effect on the gas film indicate that a force was exerted on the gas film during the discharge process and the shape of the gas film was changed by the force. In addition, the energies released by different types of discharge were calculated according to the voltage and current waveforms. The discharge frequency was found to increase with the increase in applied voltage and the frequency of the second type of discharge was approximately equal to that of the third type when the applied voltage was higher than 40 V.
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spelling pubmed-99675722023-02-27 Experimental Investigation of Discharge Phenomena in Electrochemical Discharge Machining Process Tang, Weidong Zhu, Yuhao Kang, Xiaoming Mao, Cong Micromachines (Basel) Article Electrochemical discharge machining (ECDM) is a promising non−traditional processing technology used to machine non−conductive materials, such as glass and ceramic, based on the evoked electrochemical discharge phenomena around the tool electrode. The discharge in ECDM is a key factor that affects the removal of material. Moreover, the discharge current is an important indicator reflecting the discharge state. However, the discharge characteristics remain an open topic for debate and require further investigation. There is still confusion regarding the distinction of the discharge current from the electrochemical reaction current in ECDM. In this study, high−speed imaging technology was applied to the investigation of the discharge characteristics. By comparing the captured discharge images with the corresponding discharge current, the discharge can be classified into three types. The observations of the discharge effect on the gas film indicate that a force was exerted on the gas film during the discharge process and the shape of the gas film was changed by the force. In addition, the energies released by different types of discharge were calculated according to the voltage and current waveforms. The discharge frequency was found to increase with the increase in applied voltage and the frequency of the second type of discharge was approximately equal to that of the third type when the applied voltage was higher than 40 V. MDPI 2023-01-31 /pmc/articles/PMC9967572/ /pubmed/36838067 http://dx.doi.org/10.3390/mi14020367 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tang, Weidong
Zhu, Yuhao
Kang, Xiaoming
Mao, Cong
Experimental Investigation of Discharge Phenomena in Electrochemical Discharge Machining Process
title Experimental Investigation of Discharge Phenomena in Electrochemical Discharge Machining Process
title_full Experimental Investigation of Discharge Phenomena in Electrochemical Discharge Machining Process
title_fullStr Experimental Investigation of Discharge Phenomena in Electrochemical Discharge Machining Process
title_full_unstemmed Experimental Investigation of Discharge Phenomena in Electrochemical Discharge Machining Process
title_short Experimental Investigation of Discharge Phenomena in Electrochemical Discharge Machining Process
title_sort experimental investigation of discharge phenomena in electrochemical discharge machining process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9967572/
https://www.ncbi.nlm.nih.gov/pubmed/36838067
http://dx.doi.org/10.3390/mi14020367
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