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Doloi, Biswanath
- A Review on Laser Assisted Jet Electrochemical Machining Process
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Authors
Affiliations
1 Jadavpur University, Kolkata, India and with Ideal Institute of Engineering, Kalyani, IN
2 Department of Mechanical Engineering, Jadavpur University, Kolkata, IN
1 Jadavpur University, Kolkata, India and with Ideal Institute of Engineering, Kalyani, IN
2 Department of Mechanical Engineering, Jadavpur University, Kolkata, IN
Source
Journal of the Association of Engineers, India, Vol 90, No 1-2 (2020), Pagination: 39-46Abstract
Hybrid Machining Processes (HMP) consist of two different types of machining processes which are applied at the same time in the machining zone. These processes are applied for machining of various advanced materials of complex shapes and sizes. One of the important HMP is Laser Assisted Jet Electrochemical Machining (LAJECM) where a laser beam of low power and a jet of electrolyte are coaxially focused through a nozzle on a particular machine zone. Thus it eliminates the stray machining effect of ECM process. Machining zone temperature as well as electrolyte current density is increased by laser. Thus electrochemical dissolution rate and MRR are increased. In this process, jet of electrolyte is used as tool which eliminates the complex tool design problem of stand-alone ECM process. Laser assistance in ECM process improves precision, accuracy, surface quality and also productivity. Various researchers have performed their research work on LAJECM. This article focuses on various aspects and implementations of LAJECM.Keywords
HMP, Electrochemical Machining, LAJECM, Localization Effect.References
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- Pajak, P.T., De Silva, A. K. M., Me Geough, J.A. and Harrison, D.K, Modelling the aspects of precision and efficiency in laser-assisted jet electrochemical machining (LAJECM), Journal of Materials Processing Technology, Vol.149, No.1-3, pp.512518, 2004.
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- Modelling and Analysis on Performance of ECDM Process for the Fabrication of μ-Channels on Glass through Response Surface Methodology
Abstract Views :254 |
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Authors
Affiliations
1 Production Engineering Department, Jadavpur University, Kolkata, W.B, IN
1 Production Engineering Department, Jadavpur University, Kolkata, W.B, IN
Source
Manufacturing Technology Today, Vol 18, No 9 (2019), Pagination: 39-51Abstract
The process electro-chemical discharge micro-machining can be utilized to produce micro-channels, micro-profiles, blind holes and miniature parts with ceramic, composite, quartz and glass. This research paper enlightens the development of micro-ECDM system and the influences of process variables like duty ratio (%), pulse frequency (Hz), electrolyte concentration (wt%) and applied voltage (V) on material removal rate (MRR), overcut (OC), heat affected zone (HAZ) and surface roughness (Ra) to improve the machining efficiency as well as better quality of surface integrity during micro-channel cutting on glass using spring feed mechanism in ECDM process. The mathematical models of above machining criteria are established with help of response surface methodology (RSM) and their adequacies have been justified through Analysis of Variance (ANOVA) test. This research article also emphasises on the single and multi-objective optimization to find out suitable parametric condition for micro-channel cutting on glass. MRR is found maximum at 55V/30wt%NaOH/40%/200Hz and better surface quality of μ-channel is achieved with higher machining depth at 35V/30wt%NaOH/60%/660Hz. Further, this research paper includes a qualitative analysis of micro-channels based on SEM and XRD analyses to identify the phase change, micro-cracks and presence of uncut silica debris in the channels.Keywords
ECDM, μ-Channel, RSM, Glass.References
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