Results 141 to 150 of about 546 (176)
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Surface Morphology and Corrosion Behavior in Nano PMEDM
Key Engineering Materials, 2016This research study was conducted to investigate the effect of nanoaluminum powder mixed electrical discharge machining (PMEDM) on surface morphology and corrosion rate of titanium alloy material. The development of devices such as implants in biomedical engineering application nowadays requires materials having good mechanical and physical properties.
Ahmad Majdi Abdul-Rani +2 more
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Multi-Objective Optimization of PMEDM Input Factors for Processing Cylindrical Shaped Parts
Materials Science Forum, 2021The present work deals with multi-objective optimization of powder mixed electric discharge machining (PMEDM) when processing cylindrically shaped parts. In this work, the pulse on time Ton, the pulse off time Toff, the powder concentration Cp, the pulse current IP, and the server voltage SV were chosen for the optimization problem.
Tran Thi Hong +7 more
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Simulation of Particles’ Activity in Discharge Channel of PMEDM
Applied Mechanics and Materials, 2007Powder mixed EDM can effectively improve the surface quality of a machined workpiece. In order to study the mechanism of powder mixed EDM process, particles’ activities in working conditions are simulated and corresponding experiments are done. A 3D electric fields model described by finite element method of the particles suspended in working fluid in ...
Yuan Gang Wang, Fu Ling Zhao
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Minimum roughness value in PMEDM with low-frequency vibration applied to workpiece
Modern Physics Letters B, 2023In powder-mixed electrical discharge machining (PMEDM), the application of low-frequency vibrations to a workpiece is considered beneficial to the machining quality. This study evaluates the average surface roughness (Ra) of SKD61 steel workpieces subjected to low-frequency vibrations during PMEDM using a Cu electrode and titanium powder. Specifically,
Phan Nguyen Huu +2 more
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Aluminium powder mixed rotary electric discharge machining (PMEDM) on Inconel 718
Australian Journal of Mechanical Engineering, 2017AbstractThe rotary tool is a recent innovation of PMEDM. Aluminium oxide (Al2O3) powder with a particle concentration of 0.5–1.5 gm/l was added into the dielectric to study improved machining performance. Inconel 718 was machined using copper–tungsten electrode with tool rotation about 300 rpm.
Sagar Patel +2 more
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A review of performance optimization and current research in PMEDM
Materials Today: Proceedings, 2019Abstract The EDM method is non-conventional in machining for machining of geometrically unpredictable or hard materials and electrically conductive materials that cannot be machined with ordinary forms of machining. With latest strategies, research has emphasized EDM's increased machining efficiency.
M. Jawahar +2 more
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Effect of Input Parameters on Electrode Wear in PMEDM Cylindrical Shaped Parts
Key Engineering Materials, 2020This paper deals with the effect of input parameters of Powder Mixed Electric Discharge Machining (PMEDM) process on the surface roughness when processing cylindrical shaped parts. In this work, the workpiece material is 90CrSi alloy tool steel and the nanopowder is silicon carbide. Also, five input parameters including the pulse on time, the pulse off
Le Hong Ky +7 more
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Material Selection for PMEDM Process
International Journal of Mechanical Engineering and Robotics ResearchPowder Mixed Electro-Discharge Machining (PMEDM) is a non-traditional machining process. This method is used more and more to machine complex surfaces, parts made from materials with high hardness. Three indispensable components in PMEDM are powder, dielectric fluid and electrode.
Nguyen Van Thien, Nguyen Hong Son
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Reverse-polarity PMEDM using self-welding bundled 3D-laminated microelectrodes
Journal of Materials Processing Technology, 2019Abstract To improve the fabrication efficiency of three-dimensional (3D) microelectrode and to eliminate the discharge ridges on microstructures that are machined by laminated microelectrodes, Sn-plated Cu foils were used to prepare a bundled 3D-laminated microelectrode.
Zhao-zhi Wu +5 more
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Technology and research developments in powder mixed electric discharge machining (PMEDM)
Journal of Materials Processing Technology, 2007Abstract Powder mixed electric discharge machining (PMEDM) is one of the recent innovations for the enhancement of capabilities of EDM process. In PMEDM, the electrically conductive powder is mixed in the dielectric of EDM, which reduces the insulating strength of the dielectric fluid and increases the spark gap between the tool and workpiece.
H.K. Kansal +2 more
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