Results 151 to 160 of about 590 (187)
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Studying the microhardness on the surface of SKD61 in PMEDM using tungsten carbide powder
International Journal of Modern Physics B, 2020Electrical discharge machining (EDM) process is widely used to process hard materials in the industry. The process of electrical discharge is changed and called PMEDM when alloy powder is added in the oil dielectric. In this study, the effect of tungsten carbide alloy powder added in the dielectric on the microhardness of surface (HV) status of the ...
Van Tao Le +4 more
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Comparative study of low-frequency vibrations assigned to a workpiece in EDM and PMEDM
International Journal of Modern Physics B, 2020This study deals about the influence of vibrations incorporated into a workpiece during powder-mixed electrical discharge machining (PMEDM) on quality measures such as material removal rate (MRR), surface roughness [Formula: see text] and microhardness.
Quang Dung Le +3 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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Influence of the Agglomeration Phenomenon on the Recast Surface in PMEDM Environment
2020The agglomeration phenomenon that occurs in PMEDM environment is one of the significant obstacles in enhancing the removal operation in this environment. This phenomenon has been investigated by the prior studies to improve the microhardness (MH) and recast layer thickness (RLT). However, these studies have not focused on the type of agglomeration that
M. A. Abbas, M. A. Lajis
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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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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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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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The International Journal of Advanced Manufacturing Technology, 2020
Bioactive hydroxyapatite (HA) powder has been used as an addition in dielectrics for powder-mixed electrical discharge machined titanium (Ti) alloys as orthopedic implants. However, the low electrical conductivity of the HA powder renders discharge unstable and results in a low machining efficiency. This study aimed to improve the material removal rate
Yuan-Ta Yu +4 more
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Bioactive hydroxyapatite (HA) powder has been used as an addition in dielectrics for powder-mixed electrical discharge machined titanium (Ti) alloys as orthopedic implants. However, the low electrical conductivity of the HA powder renders discharge unstable and results in a low machining efficiency. This study aimed to improve the material removal rate
Yuan-Ta Yu +4 more
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Effect of process parameters on the surface crack density of AISI 304 in PMEDM
World Journal of Engineering, 2017Purpose In this study, powder mixed electro discharge machining (PMEDM) has been performed for the machining of AISI 304 stainless steel by using the tungsten carbide electrode when silicon carbide (SiC) powder is mixed with kerosene. The purpose of this study is to find the optimal value and ascertain the effect of significant machining parameters on
Munmun Bhaumik, Kalipada Maity
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Experimental Investigation of White Layer Formation on Machining Silicon Steel in PMEDM Process
Silicon, 2020The silicon steel can be easily machined using electrical discharge machining process due to its higher strength. Since the white layer thickness and propoerties can affect the surface performance measures in the process, it is important to investigate the effects of process parameters on white layer. In the present study, an experimental investigation
T. Muthuramalingam, Nguyen Huu Phan
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