Study of surface roughness in wire electrochemical micro machining

Xu, Kun; Zeng, Yongbin; Li, Peng; Zhu, Daiyin

doi:10.1016/j.jmatprotec.2015.03.007

Cited by 54 publications

(28 citation statements)

References 15 publications

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“…In electrochemical micromachining, pulsed current is widely used to improve machining accuracy and reduce stray corrosion [17]. Our preliminary pulsed current experiments have indicated that both the pulse duty cycle and frequency had great influence on the machining quality, and pulse duty cycle less than 50 % and frequency less than 1000 Hz were helpful to reduce stray corrosion of micro-dimple arrays generated with NaNO 3 electrolyte.…”

Section: Investigating the Generation Of Micro-dimple Arrays With Pulmentioning

confidence: 87%

Electrochemical micromachining of micro-dimple arrays on the surface of Ti-6Al-4V with NaNO3 electrolyte

Chen

Hou

2016

Int J Adv Manuf Technol

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Titanium alloys are widely used in the aerospace and biomedical industries. Micro-dimple arrays, as a kind of surface texture, have been applied on titanium alloy surfaces to enhance tribological behaviour as well as to affect the biological performance of titanium implants. Through-mask electrochemical micromachining (TMEMM) is a promising approach to generate micro-dimple arrays on metal surfaces. In general, sodium bromide and methanol-sulfuric acid, which could dissolve the passive oxide layer on titanium alloy surfaces, are used as electrolytes to generate micro-dimple arrays. However, these electrolytes are caustic, which can damage the equipment, and are unfavourable for industrial applications. In this paper, an environmentally friendly NaNO 3 electrolyte was employed to generate micro-dimple arrays on titanium alloy surfaces in TMEMM with a reusable mask; this made the process more efficient and safer. Experiments showed that there was serious stray corrosion on the titanium alloy surfaces when the micro-dimple arrays were generated using direct current. To obtain high-quality micro-dimple arrays, a pulsed current was employed in TMEMM. The results showed that machining parameters of applied voltage of 24 V, pulse duty cycle of 10 % and frequency of 100 Hz were appropriate to improve the machining quality. Micro-dimple arrays with no stray corrosion were thus generated. Moreover, the electrolyte temperature also influenced the machining accuracy, and a low electrolyte temperature of 20°C was useful to reduce the undercutting of micro-dimples and improve machining localization. With the optimized parameters, micro-dimples with a diameter of 110 μm and depth of 20 μm were generated.

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Section: Investigating the Generation Of Micro-dimple Arrays With Pulmentioning

confidence: 87%

Electrochemical micromachining of micro-dimple arrays on the surface of Ti-6Al-4V with NaNO3 electrolyte

Chen

Hou

2016

Int J Adv Manuf Technol

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“…The same the anode surface depassivation and efficiency of dissolution products, hydrogen and heat transportation out of interelectrode area could be significantly improved and the speed of ECM cutting can be increased. In case of micro WECM it could be difficult because of smaller wire diameter of ~ 10µm [20]. It looks as very interesting area of a new research.…”

Section: Discussionmentioning

confidence: 99%

Biological Inspirations in Details Construction and Manufacturing Processes

Ruszaj¹,

Cygnar²,

Budzik³

2019

AJMA

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Any machine-tool or manufacturing process designed by engineers is not as excellent as plants, animals or processes occurring in natural surroundings, which have been designed by The NATURE in evolution process. The bridge between solutions occurring in natural surroundings and technique create the BIONIC. The bionic (from Greece words "bioslife" and "mimesis-to mimic") is an interdisciplinary science which investigated alive organisms, materials and processes occurring in the natural surroundings in order to apply results in technical solutions. The bionic achievements have been applied in many branches of technique. Nowadays it is very important to start the intensive research on bio-inspired applications in the area of production engineering. However it is not optimistic that there are many factories and engineers who don't apply bio-inspirations in their professional activities. The results of investigations presented in this paper can encourage for wider applications of bioinspirations in engineering. So, in the paper there are presented general informations about methodology of bio-inspired design. Then, the practical application and results are presented. The special attention is payed for bio-improvements in manufacturing systems, mechanical parts shape and inside structure designing, special properties of surface layer creation and innovations in drilling and grinding operations. The general idea of the paper is to generate some kind of braking down in the classical view on engineering and manufacturing processes further development.

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“…Obróbka elektrochemiczna mikroelementów czy mikrostruktur jest zwykle realizowana w operacjach: drążenia (bez ruchu obrotowego elektrody), wiercenia (z ruchem obrotowym elektrody), frezowania (z ruchem obrotowym elektrody) oraz strugania (bez ruchu obrotowego elektrody) [19][20][21][22][23][24][25][26]. W przypadku mikroobróbki (d << 1 mm) poważny problem stanowią wykonanie i pozycjonowanie elektrody roboczej.…”

Section: Mikroobróbka Elektrochemicznaunclassified

“…25,26,27], z których wynika, że ta metoda jest już stosowana w wytwarzaniu elementów lub struktur o wymiarach od ok. 100 µm.…”

Section: Mikroobróbka Elektrochemicznaunclassified

Electrochemical machining – state of the art and direction of development

Ruszaj

2017

Mechanik

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Electrochemical machining process (ECM) can be applied for efficient shaping advanced materials conducting electrical current, which are difficult or impossible for machining using conventional methods. In electrochemical machining, the workpiece is an anode and material is removed as a result of electrochemical reactions “atom by atom” without mechanical forces. This mechanism of material removal make it possible to obtain high quality of machined surface layer with uniform properties. The very important advantage of ECM process is also the fact that there is not a tool wear (working electrode – cathode), because the equivalent reaction to anodic dissolution is hydrogen generation on cathode surface and hydrogen can be easily removed from, the inter-electrode gap by electrolyte flow. Because of this advantages, the ECM process is widely applied in space, aircraft, car and electromechanical industry and research stimulating ECM development are carried out.

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Study of surface roughness in wire electrochemical micro machining

Cited by 54 publications

References 15 publications

Electrochemical micromachining of micro-dimple arrays on the surface of Ti-6Al-4V with NaNO3 electrolyte

Electrochemical micromachining of micro-dimple arrays on the surface of Ti-6Al-4V with NaNO3 electrolyte

Biological Inspirations in Details Construction and Manufacturing Processes

Electrochemical machining – state of the art and direction of development

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