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Investigation and Prediction of ECMM characteristics of Hardened Die Steel with Nanoparticle Added Electrolytes Using Hybrid Deep Neural Network

Kanniyappan Vijayakumar, Tamilperuvalathan Sekar

Polish Journal of Chemical Technology

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2022

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Vol. 24, nr 4

7--22

EN

In our work, the process efficiency of the ECMM should be improved by using different combinations of nano-particles and added electrolytes. The superior aim of this work is to improve and predict the ECMM machining characteristics of die hardened steel, namely material removal rate (MRR), Tool wear rate (TWR) and Surface Roughness (Ra). The machining conditions are optimized using Response Surface Methodology (RSM) based on Box Behnken Design. The better Nano electrolyte is optimized using Deer Hunting Optimization (DHO) based on the machined outcomes, and the performances are predicted using a hybrid Deep Neural Network (DNN) based DHO. The hybrid DNN-DHO based predicted outcome of MRR is 0.361 mg/min, TWR is 0.272 mg/min and Ra is 2.511 μm. The validation results show that our proposed DNN-DHO model performed well and obtained above 0.99 regression for both training and validation of DNN-DHO, where the root mean square error ranges between 0.018 and 0.024.

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Experimental investigation of the electrochemical micromachining process of Ti-6Al-4V titanium alloy under the influence of magnetic field

Gopinath T. Praveena, Prasanna J., Sastry C. Chandrasekhara, Patil Sandeep

Materials Science Poland

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2021

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Vol. 39, No. 1

124--138

EN

An attempt has been made to study the influence of magnetic field on the micro hole machining of Ti-6Al-4V titanium alloy using electrochemical micromachining (ECMM) process. The presence of magneto hydro dynamics (MHD) is accomplished with the aid of external magnetic field (neodymium magnets) in order to improve the machining accuracy and the performance characteristics of ECMM. Close to ideal solution for magnetic and nonmagnetic field ECMM process, the parameters used are as follows: concentration electrolyte of 15 g/l; peak current of 1.35 A; pulse on time of 400 s; and duty factor of 0.5. An improvement of 11.91–52.43% and 23.51–129.68% in material removal rate (MRR) and 6.03–21.47% and 18.32–33.09% in overcut (OC) is observed in ECMM of titanium alloy under the influence of attraction and repulsion magnetic field, respectively, in correlation with nonmagnetic field ECMM process. A 55.34% surface roughness factor reduction is ascertained in the hole profile in magnetic field-ECMM in correlation with electrochemical machined titanium alloy under nonmagnetic field environment. No machining related stress is induced in the titanium alloy, even though environment of electrochemical machining process has been enhanced with the presence of magnetic field. A slight surge in the compressive residual factor, aids in surge of passivation potential of titanium alloy, resulting in higher resistance to outside environment.

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Wybrane problemy technologii elektrochemicznej i elektroerozyjnej mikro-narzędzi

Skoczypiec S., Kozak J., Ruszaj A.

Inżynieria Maszyn

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2009

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R. 14, z. 1

20-30

PL

Szczególne miejsce wśród metod wytwarzania oprzyrządowania i narzędzi do mikro-odlewania i mikro-formowania zajmują metody niekonwencjonalne tj. obróbka elektroerozyjna i elektrochemiczna. W artykule przedstawiono charakterystykę obu tych procesów oraz problemy związane z ich wdrożeniem do przemysłu. Przedstawiono również koncepcję połączenia obu tych metod w jeden, sekwencyjny proces wytwarzania pozwalający w znacznym stopniu zminimalizować wady cechujące wymienione sposoby, jednocześnie wykorzystując w pełni ich zalety.

EN

In group of methods designed for machining of technological equipment and tools for micro-casting and micro-forming special attention is connected with application of unconventional processes, such as: electrochemical (ECMM) and electrodischarge (EDMM) micromachining. In the paper description of both processes and typical problems connected with industrial application has been presented. In the last section the proposition of ECMM and EDMM combination into single, sequential process, which gives possibility to minimize disadvantages and strengthen the advantages of electrochemical and electrodischarge micromachining processes.

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Koncepcja obrabiarki do hybrydowej sekwencyjnej technologii EC/EDMM

Skoczypiec S., Ruszaj A.

Inżynieria Maszyn

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2007

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R. 12, z. 4

62-69

PL

W artykule, na tle charakterystyki procesów mikroobróbki elektrochemicznej (ECMM) i elektroerozyjnej (EDMM) przedstawiona została koncepcja hybrydowej sekwencyjnej technologii EC/EDMM, która polega na połączeniu obu przedstawionych mikroobróbek w sekwencyjny proces i ich realizację na jednym urządzeniu integrującym obie technologie. Przeprowadzona charakterystyka technologiczna obrabiarek do ECMM i EDMM pozwala na wyróżnienie identycznych podzespołów funkcjonalnych, co jest podstawą do budowy obrabiarki do sekwencyjnej hybrydowej technologii EC/EDMM.

EN

In the group of methods applied for machining of technological equipment and tools for micro-casting and micro-forming, special attention is paid on application of electrochemical (ECMM) and electrodischarge (EDMM) micromachining. In the paper the description of ECMM and EDMM and conception of both processes combination into single, sequential process has been presented. This combination gives possibility to minimize disadvantages and emphasizes advantages of electrochemical and electrodischarge micromachining processes. Presented technological characteristics of ECMM and EDMM machine-tools gives possibility to identify versatile functional subsystems, what is the base for EC/EDMM hybrid sequential machine-tool design.