Generating complicated surface with electrolyte jet machining

Natsu, Wataru; Ikeda, Tomone; Kunieda, Masanori

doi:10.1016/j.precisioneng.2006.02.004

Cited by 153 publications

(76 citation statements)

References 3 publications

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“…In addition, there are no heat affected zones, residual stress, cracks, or burrs seen with mechanical or thermal machining methods like cutting, grinding, electrical discharge machining, and laser beam machining, because EJM is an electrochemical process. In previous researches [11,12], it was found that high current density in the electrolyte jet brings about mirror-like surface, while lower current density results in rough topography. Hence, the surface becomes smooth at the center of the jet with high current density when the jet is standing still.…”

Section: Introductionmentioning

confidence: 99%

Mirror-like finishing by electrolyte jet machining

Kawanaka¹,

Kunieda²

2015

CIRP Annals

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108

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Section: Introductionmentioning

confidence: 99%

Mirror-like finishing by electrolyte jet machining

Kawanaka¹,

Kunieda²

2015

CIRP Annals

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108

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“…The relationship between current density and current efficiency is exaggerated for EJP techniques due to large spatial current density differentials [32]. This causes localised regions where current density exceeds the well-understood activation threshold and thus the onset of machining.…”

Section: Profile Fidelity Enhancementsmentioning

confidence: 99%

Transitory electrochemical masking for precision jet processing techniques

Mitchell-Smith

Speidel

Clare

2018

Journal of Manufacturing Processes

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a b s t r a c tElectrochemical jet processing techniques provide an efficient method for large area surface structuring and micro-milling, where the metallurgy of the near-surface is assured and not adversely affected by thermal loading. Here, doped electrolytes are specifically developed for jet techniques to exploit the Gaussian energy distribution as found in energy beam processes. This allows up to 26% reduction in dissolution kerf and enhancements of the defined precision metric of up to 284% when compared to standard electrolytes. This is achieved through the filtering of low energy at discrete points within the energy distribution curve. Two fundamental mechanisms of current filtering and refresh rate are proposed and investigated in order to underpin the performance enhancements found using this methodology. This study aims to demonstrate that a step change in process fidelity and flexibility can be achieved through optimisation of the electrochemistry specific to jet processes.

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“…Electrochemical Machining with a closed electrolytic free jet (Jet-ECM) is an innovative micro manufacturing procedure which applies high current densities with a high degree of local removal, high localization of erosion and a high surface quality (Natsu et al 2007;Hackert et al 2007Hackert et al , 2008aHackert et al , 2009). In Jet-ECM the electric current between the anodic work piece and the cathodic tool is supplied via an electrolyte jet which is ejected from a small nozzle like illustrated in Fig.…”

Section: Jet-ecmmentioning

confidence: 99%

Design and realization of micro structured surfaces for thermodynamic applications

et al. 2011

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In the present work different micro structures with high potential for convection and nucleate boiling processes were presented. Based on literature appropriate micro structures were selected which should offer the possibility to enhance the heat transfer capability. By help of thermodynamic simulations it could be demonstrated that the convective heat transfer can be improved by use of micro structured surfaces. Especially calottes, micro channels and micro columns were determined. Primarily, the surface enlargement has the determining influence on the heat transfer efficiency. However, the design of the geometries and the arrangement of the structures also effect the heat transfer. Especially for forced convection processes the influence of these parameters has to be examined in further investigations. By use of electrochemical and laser beam machining the selected structures were manufactured in copper work pieces. With Jet-ECM realized micro structures offer a high exactness with excellent surface qualities. The high potential of Jet-ECM for a reproducible fabrication of micro structures for thermodynamic applications is obvious. Laser machined micro structures are distinguished by rough surfaces which can offer an additional positive effect on the heat transfer phenomena. So laser beam machining is also suitable for the reproducible machining of thermodynamically appropriate micro structures

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Generating complicated surface with electrolyte jet machining

Cited by 153 publications

References 3 publications

Mirror-like finishing by electrolyte jet machining

Mirror-like finishing by electrolyte jet machining

Transitory electrochemical masking for precision jet processing techniques

Design and realization of micro structured surfaces for thermodynamic applications

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