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Open AccessArticle

An Investigation into Laser-Assisted Electrochemical Discharge Machining of Transparent Insulating Hard-Brittle Material

1
Laser Technology Institute, School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013, China
2
Fengjiang Intelligent Technology Co., Ltd., Changzhou 213100, China
*
Author to whom correspondence should be addressed.
Micromachines 2021, 12(1), 22; https://doi.org/10.3390/mi12010022
Received: 27 October 2020 / Revised: 4 December 2020 / Accepted: 24 December 2020 / Published: 27 December 2020
Electrochemical discharge machining (ECDM) and laser machining are emerging nontraditional machining technologies suitable for micro-processing of insulating and hard-brittle materials typified by glass. However, poor machinability of glass is a major constraint, which remains to be solved. For the micro-grooves processed by ECDM, the bottom surface is usually uneven and associated with protrusion structures, while the edges are not straight with obvious wave-shaped heat-affected zones (HAZs) and over-cutting. Besides, the cross section of the micro-grooves processed by the laser is V-shape with a large taper. To solve these problems, this study proposed the laser-assisted ECDM for glass micro-grooving, which combines ECDM and laser machining. This study compared morphological features of the single processing method and the hybrid processing method. The results show that ECDM caused cylindrical protrusions at the bottom of the microgrooves. After processing these micro-grooves by laser, the cylindrical protrusions were removed. However, the edge quality of the microgrooves was still poor. Therefore, we used the laser to get microgrooves first, so we got micro-grooves with better edge quality. Then we use ECDM to improve the taper of microgrooves and the cross-sectional shape of the microgrooves transformed from a V-shape to a U-shape. View Full-Text
Keywords: electrochemical discharge machining; laser machining; glass; micro-groove electrochemical discharge machining; laser machining; glass; micro-groove
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MDPI and ACS Style

Zhao, D.; Zhang, Z.; Zhu, H.; Cao, Z.; Xu, K. An Investigation into Laser-Assisted Electrochemical Discharge Machining of Transparent Insulating Hard-Brittle Material. Micromachines 2021, 12, 22. https://doi.org/10.3390/mi12010022

AMA Style

Zhao D, Zhang Z, Zhu H, Cao Z, Xu K. An Investigation into Laser-Assisted Electrochemical Discharge Machining of Transparent Insulating Hard-Brittle Material. Micromachines. 2021; 12(1):22. https://doi.org/10.3390/mi12010022

Chicago/Turabian Style

Zhao, Douyan; Zhang, Zhaoyang; Zhu, Hao; Cao, Zenghui; Xu, Kun. 2021. "An Investigation into Laser-Assisted Electrochemical Discharge Machining of Transparent Insulating Hard-Brittle Material" Micromachines 12, no. 1: 22. https://doi.org/10.3390/mi12010022

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