Surface finishing achieved by ECM with a moving wire electrode

Furuyama, Kohta; Kunieda, Masanori; Hashimoto, Takashi; Yuzawa, Takashi

doi:10.2526/ijem.21.18

Cited by 12 publications

(2 citation statements)

References 6 publications

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“…Thereby, ECM has been widely used to fabricate some special difficult-to-machine components, such as the jet engine turbine blades, steam turbine blades, etc. Also, ECM can be used in the mirror-finishing machining [4,5], whose surface quality even can be comparable with the mechanical polishing [6]. Recently, with the development of microelectromechanical systems (MEMS) and other small precise parts, the demand for micro machining is constantly increasing.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Electrochemical Micromachining of Micro Through-Hole by Using Micro Helical Electrode

et al. 2020

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The instability of machining process caused by the difficulty of the electrolyte refresh in electrochemical micromachining (EMM) of micro through-hole has been an unsolved problem. Thus, this paper investigates the electrochemical micromachining of micro through-hole by using a micro helical electrode combining with the jetting electrolyte. With the help of high-speed rotation of micro helical electrode and its spiral shape, the internal electrolyte can be stirred while the external jetting electrolyte can flow into the hole along the spiral groove to refresh the electrolyte effectively, thereby, improving the machining stability of EMM. Firstly, the influence of the process parameters on the fabrication of micro through-hole in the EMM by using micro helical electrode without non-conductive mask is investigated. Based on the optimization of the process parameters, a micro through-hole with an inlet dimension of 121.6 μm and an outlet dimension of 114.9 μm is obtained successfully. Furthermore, this paper also tries to use the micro helical electrode coated with the non-conductive mask to decrease the bad influence of the stray corrosion attack. It is found that the non-conductive mask coated on the surface of micro helical electrode can improve the machining accuracy significantly under the condition of low pulse frequency (≤1 KHz). However, its good effect on preventing the stray corrosion decreases along with the increase of the pulse frequency.

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Section: Introductionmentioning

confidence: 99%

Investigation on the Electrochemical Micromachining of Micro Through-Hole by Using Micro Helical Electrode

et al. 2020

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“…The current density should be high enough to have a higher material removal rate and decreases workpiece surface roughness. 2 The IEG should be defined properly to have better copying accuracy of the tool on the workpiece.…”

mentioning

confidence: 99%

Analysis of Mechanisms Affecting the Tool in Pulsed Electrochemical Machining

Ghasemiansafaei,

Schaefer,

Hall

et al. 2023

J. Electrochem. Soc.

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Electrochemical machining (ECM) is an important technology in machining difficult-to-cut materials. The contactless nature of ECM and anodic dissolution of the workpiece propound no tool ablation. Nevertheless, in a few studies, tool damages, namely the formation of pits and geometrical changes, have been observed, which is the investigative goal of this work. This study considers three hypotheses to investigate tool changes during pulsed electrochemical machining (PECM) which are hydrogen embrittlement, cavitation erosion, and cathodic corrosion. A systematic study of monitoring possible tool (1.4112 martensitic stainless steel) changes during ECM and PECM in aqueous NaNO3 electrolyte is performed. Experimental results of this study show that hydrogen embrittlement and cavitation erosion are not the reason for causing changes in the tool. Cathodic corrosion might be the reason for the changes in the tool in this study; however, more investigation is needed. The approach in this study is investigating the microstructure of the tool regarding different aspects before and after ECM and PECM, as the microstructure stores information regarding phenomena occurring during any process.

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Micro Electrochemical Machining

Natsu¹

2018

Micro/Nano Technologies

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Surface finishing achieved by ECM with a moving wire electrode

Cited by 12 publications

References 6 publications

Investigation on the Electrochemical Micromachining of Micro Through-Hole by Using Micro Helical Electrode

Investigation on the Electrochemical Micromachining of Micro Through-Hole by Using Micro Helical Electrode

Analysis of Mechanisms Affecting the Tool in Pulsed Electrochemical Machining

Micro Electrochemical Machining

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