Macro electrochemical milling and its hybrid variants

QU, Ningsong; FANG, Xiaolong; ZHANG, Junzhong; KONG, Huanghai; LIU, Yang; WANG, Minglu; YUE, Xiaokang; MA, Yuehong; SHEN, Zhihao; CHEN, Jiajie

doi:10.1016/j.cja.2023.12.015

Cited by 8 publications

(1 citation statement)

References 151 publications

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“…Jet electrochemical micromilling (JEMM) is an electrochemical machining (ECM) method. It employs a metal nozzle with an outer diameter less than 1 mm as the tool cathode and is combined with high-precision multi-axis numerical control movements [7]. JEMM is based on electrochemical anodic dissolution for processing metallic materials; the noncontact machining process avoids some of the drawbacks associated with traditional mechanical machining, such as rapid tool wear, the formation of burrs, and deformation [8,9].…”

Section: Introductionmentioning

confidence: 99%

Jet Electrochemical Micromilling of Ti-6Al-4V Using NaCl–Ethylene Glycol Electrolyte

Niu,

Huang,

Ming

et al. 2024

Micromachines

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Titanium alloys are widely used in aerospace and biomedicine because of their excellent mechanical characteristics, but these properties also make such alloys difficult to cut. Jet electrochemical micromilling (JEMM) is based on the principle of electrochemical anodic dissolution; it has some inherent advantages for the machining of titanium alloy microstructures. However, titanium oxidizes readily, forming an oxide film that impedes a uniform dissolution during electrochemical machining. Therefore, a high voltage and an aqueous NaCl electrolyte are usually used to break the oxide film, which can lead to severe stray corrosion. To overcome this problem, the present study investigated the JEMM of Ti-6Al-4V using a NaCl–ethylene glycol (NaCl-EG) electrolyte. Electrochemical testing showed that Ti-6Al-4V exhibits a better corrosion resistance in the NaCl-EG electrolyte compared to the aqueous NaCl electrolyte, thereby reducing stray corrosion. The localization and surface quality of the grooves were enhanced significantly when using JEMM with a NaCl-EG electrolyte. A multiple-pass strategy was adopted during JEMM to improve the aspect ratio, and the effects of the feed depth and number of passes on the multiple-pass machining performance were investigated. Ultimately, a square annular microstructure with a high geometric dimensional consistency and a smooth surface was obtained via JEMM with multiple passes using the optimal parameters.

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Section: Introductionmentioning

confidence: 99%