The Effect of Nickel Micro Powder Suspended Dielectric on EDM Performance Measures of EN-19 Steel

Accomplishment of high machining rates along with good surface quality is a major concern in electric discharge machining process. Powder-mixed electric discharge machining in which suitable powder particles are impregnated in dielectric has gone forth as a potential solution to this problem. Nevertheless, challenges such as dielectric circulation, homogeneous blending of the powder particles in the dielectric, debris removal and quantity of the powder material required have to be addressed carefully before implementing this process on a large scale in the manufacturing industry. Extensive research in the field of electric discharge machining using powder-suspended dielectrics has started only in the recent years. In this article, a comprehensive review of the research going on in the field of powder-mixed electric discharge machining is presented. The emphasis is given on powder-mixed electric discharge machining mechanism, influence of powder characteristics and machining parameters on various responses. Some of the major application areas, variants of the basic powder-mixed electric discharge machining process and possibilities of further improvement are also discussed.

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“…However, pulse energy dominates striking effect at high pulse current leading to less tool wear. 15,87…”

Section: Influence Of Machining Parameters On Characteristics Of Pmedmmentioning

confidence: 99%

State of the art in powder-mixed electric discharge machining: A review

Talla

Gangopadhayay

Biswas

2016

Proceedings of the Institution of Mechanical Engineers, Part B:

101

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“…Kung et al [38] studied the influence of MRR and electrode wear ratio in the PMEDM of cobalt-bonded tungsten carbide. Kojha et al [39,40] Elaborate scrutiny of the literature reveals that material removal mechanism of PMEDM process is very complex and theoretical modeling of the process is very difficult. Regarding empirical results, much research work is required with more work-tool-powder-parametric combinations to make the process commercially applicable.…”

Section: Literature Reviewmentioning

confidence: 99%

Parametric Optimization of PMEDM Process using Chromium Powder Mixed Dielectric and Triangular Shape Electrodes

Ojha¹,

Garg²,

Singh³

2011

JMMCE

Self Cite

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In this article, parametric optimization for material removal rate (MRR) and tool wear rate (TWR) study on the powder mixed electrical discharge machining (PMEDM) of EN-8 steel has been carried out. Response surface methodology (RSM) has been used to plan and analyze the experiments. Average current, duty cycle, angle of electrode and concentration of chromium powder added into dielectric fluid of EDM were chosen as process parameters to study the PMEDM performance in terms of MRR and TWR. Experiments have been performed on newly designed experimental setup developed in laboratory. Most important parameters affecting selected performance measures have been identified and effects of their variations have been observed.

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“…The combination of PMEDM with USM was reported to have yielded an alloyed layer that improved the hardness and wear resistance of Al-Zn-Mg alloy when it was machined with TiC powder additive [5]. The use of PMEDM combination was also reported have increase material removal rate and surface quality [6,7]. In another study, increase in peak current and addition of Al2O3 powder produced higher recast layer thickness and the micro-cracks [8].…”

Section: Introductionmentioning

confidence: 96%

Electro-Discharge Machining of Aluminum Alloy with Nickel Powder-Mixed Dielectric

P¹,

K²

2018

jaar

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Powder-mixed dielectric fluid is one of the innovations of electrode-discharge machining (EDM) which seeks to improve the process outputs by addition of Nickel powders to the dielectric during machining. In the present study, the influence of Nickel powder in kerosene dielectric fluid on EDM process outputs was investigated. Experiments were conducted with the outputs as material removal rate (MRR) and surface roughness(Ra). During the EDM, the discharge current was varied between 3 and 15 A, while powder concentration ranges between 2 and 10 g/l. Results indicate that the highest MRR of 39.888 mm3 /min was obtained with Nickel powder concentration of 6 g/l at the current of 9A, where as the lowest SR of 3.397 μm was obtained with Nickel concentration of 3 g/l at the current of 3A.

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The Effect of Nickel Micro Powder Suspended Dielectric on EDM Performance Measures of EN-19 Steel

Cited by 14 publications

References 17 publications

State of the art in powder-mixed electric discharge machining: A review

State of the art in powder-mixed electric discharge machining: A review

Parametric Optimization of PMEDM Process using Chromium Powder Mixed Dielectric and Triangular Shape Electrodes

Electro-Discharge Machining of Aluminum Alloy with Nickel Powder-Mixed Dielectric

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