Experimental Investigations during Dry EDM of Inconel - 718

Bhandare, Amar S.; Dabade, Uday A.

doi:10.1088/1757-899x/114/1/012035

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…Tungsten wire with 70 µm was used as the tool electrode since it has high tensile strength and load-carrying capability [35]. Compressed air [36] was used as the dielectric fluid. The experimental parameters are listed in Table 1 were selected based on the capability of the machine, type of machining material, and tool material [3].…”

Section: Methodsmentioning

confidence: 99%

Dimensional Accuracy in Dry Micro Wire Electrical Discharge Machining

Ali¹,

Banu²,

Salehan³

et al. 2018

J. MECH. ENG. SCI.

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Dimensional accuracy is important in fabricating miniaturized product in order to reduce the material waste and machining cost as well as to achieve a better quality product. This paper presents the analysis and modelling of dimensional accuracy in dry micro wire electrical discharge machining with control parameters of gap voltage and wire tension. The investigation was performed on stainless steel using integrated multi-process micro machine tools DT 110 with compressed air as the dielectric fluid and tungsten as the wire electrode. The dimensional accuracy was determined through kerf width differences of the machined slots. The kerf width was measured using scanning electron microscope. Full factorial was used to design the experiment while analysis of variance (ANOVA) was used to analyse the results as well as to evaluate the adequacy of the developed model. Based on ANOVA, both parameters; gap voltage and wire tension have high influence on kerf width differences. The optimum machining parameters for minimum kerf width differences were found to be 85 V gap voltage and 10 % wire tension. The developed model is adequate since the percentage error (2.13 %) is relatively small. It is recommended that different type of gases should be used for further investigation in order to determine the accuracy of the dry micro wire EDM.

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Section: Methodsmentioning

confidence: 99%

Dimensional Accuracy in Dry Micro Wire Electrical Discharge Machining

Ali¹,

Banu²,

Salehan³

et al. 2018

J. MECH. ENG. SCI.

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show abstract

“…Several attempts were made to improve the process of dry EDM using its combination with other technologies like ultrasonic vibrations. Ultrasonic vibration electrical discharge machining in gas was discovered to be an excellent machining process in the experiments [6,10].…”

mentioning

confidence: 99%

Comparative Analysis of Stationary and Rotary Electrode on Dry EDM in Machining of Hastelloy C276

Dongre¹,

Raut²,

Kulkarni³

et al. 2022

KEM

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Dry EDM is a variation of the standard EDM method in which the liquid dielectric is replaced with a gaseous medium during the machining process. This paper presents comparative analysis of stationary and rotary electrode on Dry EDM in machining of Hastelloy C276 using copper EC grade rod as electrode and air as dielectric medium. Solid cylindrical (stationary and rotary) tool electrodes are used, and high-velocity gas is fed between the electrode and the workpiece through it into the discharge gap. The high-velocity gas flow into the gap assists debris clearance and reduces tool and workpiece overheating at the discharge areas. The dry EDM technique is currently known to have reduced tool wear, a smaller discharge gap, fewer residual stresses, a smaller white layer, and a smaller heat-affected zone, in addition to being ecologically friendly. To improve response factors such as material removal rate (MRR), surface roughness (Ra), and tool wear rate (TWR), Taguchi's L9 orthogonal array approach is utilised to design the trials and study the effects of different process parameters. Discharge current (I), pulse on time (Ton), Voltage (V), pressure (P), and tool rotational speed (N) were the varied input parameters. It is observed that the rotary electrode gives better MRR compared to stationary. The analysis of results show that current (I), pulse on time (Ton) and pulse off time (Toff) are the dominant factors that influence MRR and EWR.

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Experimental Investigations during Dry EDM of Inconel - 718

Cited by 2 publications

References 8 publications

Dimensional Accuracy in Dry Micro Wire Electrical Discharge Machining

Dimensional Accuracy in Dry Micro Wire Electrical Discharge Machining

Comparative Analysis of Stationary and Rotary Electrode on Dry EDM in Machining of Hastelloy C276

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