New Developments in Electro-Chemical Machining

Rajurkar, K. P.; Zhu, Di; McGeough, J. A.; Kozak, J.; Silva, A.K.M. De

doi:10.1016/s0007-8506(07)63235-1

Cited by 578 publications

(264 citation statements)

References 35 publications

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“…The type of electrolyte to be used has been investigated [35,36] alongside concentration [31,37], which have been shown to improve precision. However, these innovations, although effective in general ECM, are not so applicable to EJP.…”

Section: Profile Fidelity Enhancementsmentioning

confidence: 99%

“…A further adaptation is the introduction of a pulsed current power supply. First exploited in general electrochemical machining [37,44,45] inhomogeneity in the flow field is reduced due to the rapid updating of the electrolyte. This ensures that machining is restricted to beneath the jet as the electric double layer takes longer to form in the lower current density areas at the periphery of the jet [46,47].…”

Section: Profile Fidelity Enhancementsmentioning

confidence: 99%

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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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Section: Profile Fidelity Enhancementsmentioning

confidence: 99%

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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“…The left side of the triangle represents the set of energy carriers: Photons, Electrons, Ions, Plasma, Abrasives, Cutting edges, and Fluid jet. The right side of the triangle consists of types of working media: Solid particles, Electrolyte, Fluid, Dielectric, and (Gas Rajurkar et al 1999).…”

Section: Common Features Of Ntm and Focus On Energy-materials Interactionmentioning

confidence: 99%

European Journal of Engineering Education

2013

European Journal of Engineering Education

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“…Hassas işleme için sayısal kontrollü elektrokimyasal mikroişleme (EMİ) yapan freze tezgâhları önerilmiştir [16] ve mikroişleme koşullarının iyileştirilmesi amacıyla deneysel ve matematiksel modelleme çalışmaları devam etmektedir [17][18][19][20][21] Ülkemizde elektronik, havacılık, savunma, uzay ve tıbbi malzeme sanayilerinin geleneksel talaşlı imalat yöntemleri ile karşılanamayan özel üretim taleplerinde EKİ yöntemi avantaj sağlayacaktır. Daha hassas, verimli, güvenilir ve çevre dostu olarak kabul görebilmesi için algılama, kontrol, makina ucu tasarımı, atık azaltma-işleme-uzaklaştırma süreçleri gibi alanlardaki teknolojik gelişmelerin EKİ tezgâhlarına dahil edilmesi gerekmektedir [7]. EKİ süreç değişkenlerinin eniyilemesi için matematiksel modelleme ve simülasyon çalışmaları yapılmakla birlikte [8][9][10][11] …”

Section: Gi̇ri̇ş (Introduction)unclassified

Otomatik Kontrollü Elektrokimyasal İşlemenin (Eki) İncelenmesi Ve Uygulaması

Onel¹

2014

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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ÖZETBu çalışmada ülkemizde henüz uygulama imkanı bulamayan ileri bir metal işleme yöntemi olan elektrokimyasal işleme (EKİ) yöntemi incelenmiştir. Yeni bir EKİ tezgâhı, üç-eksenli bilgisayarlı sayısal denetimli (CNC) bir tezgâhın elektrokimyasal işlemeye uygun şekilde geliştirilerek darbeli doğru akım güç kaynağı, dikey yönde elektrot aralığı kontrolünü sağlayan servo kontrol sistemi, elektrolit vakumlama, arıtma ve geri-çevrim sistemi ile bütünleştirilmesi ile elde edilmiştir. EKİ sisteminin istenilen sınırlarda kontrollü çalışması katot ucu tasarımının doğru yapılması, katot ile anot arasındaki mesafenin hassas ayarlanması, akım ve gerilim değerlerinin kontrol altında tutulması ve elektrot yüzeylerinin maskelenmesi ile sağlanmıştır. Sistemin kararlı çalışabilmesi için elektrolit derişiminin sabit tutulması gerektiği tespit edilmiştir. Anahtar kelimeler: Elektrokimyasal işleme, metal işleme, bilgisayarlı sayısal denetim (CNC), servo kontrol INVESTIGATION AND APPLICATION OF AUTOMATIC CONTROLLED ELECTROCHEMICAL MACHINING (ECM) ABSTRACTIn this study, electrochemical machining (ECM), an advanced metal processing method that has not found application in Turkey, has been investigated. A new ECM device was developed by customizing a threedimensional CNC machine for electro-chemical applications and integrating it with pulsed DC power supply, servo motor control system that provides vertical gap control, electrolyte vacuum, purification and recycle system. Controlled operation of the system within desired limits was achieved by correct design of the cathode tool, effective adjustment of the vertical gap between the anode and the cathode, accurate control of electric current and voltage values, and masking the surface of the electrodes. It was found that keeping the electrolyte concentration constant was necessary for the system stability.

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New Developments in Electro-Chemical Machining

Cited by 578 publications

References 35 publications

Transitory electrochemical masking for precision jet processing techniques

Transitory electrochemical masking for precision jet processing techniques

European Journal of Engineering Education

Otomatik Kontrollü Elektrokimyasal İşlemenin (Eki) İncelenmesi Ve Uygulaması

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