Investigation of inner-jet electrochemical milling of nickel-based alloy GH4169/Inconel 718

Niu, Shen; Qu, Ningsong; Fu, Shuxing; Fang, Xiaolong; Li, Hansong

doi:10.1007/s00170-017-0680-8

Cited by 40 publications

(15 citation statements)

References 23 publications

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“…Obróbka ECM uniwersalnymi elektrodami jest procesem stabilnym oraz wygodnym do matematycznego modelowania, symulacji komputerowej oraz automatyzacji, jednak ma jedną istotną wadę, a mianowicie bardzo małą wydajność. Tego rodzaju obróbkę stosuje się do operacji specjalnych, takich jak wytwarzanie elementów cienkościennych, obróbka szczelin czy kieszeni [23] oraz operacje wykończeniowe (wygładza-nie) powierzchni po zgrubnym frezowaniu klasycznym lub obróbce elektroerozyjnej (rys. 15, 16) [19].…”

Section: Drążenie Elektrochemiczneunclassified

“…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

“…21 usuwanie produktów roztwarzania z obszaru obróbki wspomagane jest przez specjalną strukturę powierzchni bocznej drutu (rys. 21,23). Taka struktura generuje burzliwość przepływu elektrolitu przez szczelinę, co poprawia skuteczność usuwania produktów reakcji i umożliwia zwiększenie prędkości wycinania.…”

Section: Podsumowanie I Wnioskiunclassified

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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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Section: Drążenie Elektrochemiczneunclassified

Section: Mikroobróbka Elektrochemicznaunclassified

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Electrochemical machining – state of the art and direction of development

Ruszaj

2017

Mechanik

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“…In order to improve the machining quality of a specific machining object, more scholars choose to optimize machining parameters, such as the machining voltage, duty cycle, impulse frequency, and electrolyte concentration, to achieve better machining quality [ 20 , 21 , 22 , 23 , 24 , 25 , 26 ]. At present, research on cathode materials mainly focus on the application of single cathode material in electrochemical machining, such as brass, copper alloy, or iron alloy, while there has been less research in the field of electrochemical machining [ 27 , 28 , 29 , 30 ]. Another main reason is that as 304 stainless steel, brass, and tungsten steel are the most common tool electrodes [ 31 ], the focus is generally put on the optimization of the cathode structure during the design of the electrochemical machining cathode, while the influence of the cathode material on electrochemical machining is often ignored.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Influence of Tool Electrode Material on Electrochemical Micromachining of 304 Stainless Steel

Bian

et al. 2021

Materials

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Different cathode materials have different surface chemical components and machining capacities, which may finally result in different machining quality and machining efficiency of workpieces. In this paper, in order to investigate the influence of cathode materials on the electrochemical machining of thin-walled workpiece made of 304 stainless steel, five cylindrical electrodes are used as the target working cathodes of electrochemical machining to conduct experiments and research, including 45# steel, 304 stainless steel, aluminum alloy 6061, brass H62, and tungsten steel YK15. The stray current corrosion, taper, and material removal rate were used as the criteria to evaluate the drilling quality of efficiency of a thin-walled workpiece made of 304 stainless steel. The research results show that from the perspectives of stray current corrosion and taper, aluminum alloy 6061 is an optimal tool cathode, which should be used in the electrochemical machining of thin-walled workpieces made of 304 stainless steel; on the aspect of material removal rate, the 45# steel, 304 stainless steel, and aluminum alloy 6061 present close material removal rates, all of which are higher than that of brass H62 and tungsten steel YK15. Based on comprehensive consideration of both machining quality and machining efficiency, the aluminum alloy 6061 is the best option as the cathode tool in the electrochemical machining of thin-walled workpieces made of 304 stainless steel.

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“…Niu et al [15] investigated the ECM of the nickel-based GH4169/Inconel 718 superalloy and resulted in the chipping rate, surface, and uniform Machining gap quality improved by increasing the progress rate. In addition, a method was provided for electrolyte current as jets for electrochemical milling on this nickel-based superalloy, which has good productivity and stability, especially for deep-depth chipping.…”

Section: Introductionmentioning

confidence: 99%

Review Microstructure of Nickel-Based Single-Crystal CMSX-4 Superalloy after Electrochemical Machining

Mehrvar

Mirak

Motamedi

2021

Preprint

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A special position has been created for using the nickel-based single-crystal CMSX-4 superalloy at high temperatures due to the improved mechanical properties of this material and the absence of grain boundary in the crystal lattice. Also, electrochemical machining can be an effective method for machining this superalloy due to its unique performance in metal machining, like creating stress-free surfaces, high-level surface smoothness, and machining of complex geometries. This single crystal superalloy's microstructure consists of three phases: Gamma, Gamma prime, and a bit of carbide. Gamma prime is distributed cubically and homogeneously in the Gamma field without any boundaries and as a single crystal. It is essential not to change the microstructure after the production process or machining. In the present research, electrochemical machining was performed on CMSX-4 single crystal superalloy. The workpiece's microstructure was then investigated before and after electrochemical machining using scanning electron microscopy and EDS analysis from two sides. No changes were seen in CMSX-4 infrastructure after electrochemical machining EDS analysis and Images.

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Investigation of inner-jet electrochemical milling of nickel-based alloy GH4169/Inconel 718

Cited by 40 publications

References 23 publications

Electrochemical machining – state of the art and direction of development

Electrochemical machining – state of the art and direction of development

Experimental Study on the Influence of Tool Electrode Material on Electrochemical Micromachining of 304 Stainless Steel

Review Microstructure of Nickel-Based Single-Crystal CMSX-4 Superalloy after Electrochemical Machining

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