Experimental Investigation of EDM Parameters on Stainless Steel&amp;En41b

Dastagiri, M.; Kumar, Amit

doi:10.1016/j.proeng.2014.12.439

Cited by 25 publications

(14 citation statements)

References 6 publications

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“…With the same objective, Dastagiri and Kumar [30] selected a 2 3 factorial design with three center points and developed a mathematical model to predict MRR, average surface roughness and hardness using input parameters, such as current intensity, voltage, pulse time and duty factor. In the same way, Barenji et al [17] used a full factorial design including 32 experiments to determine the effects of some process parameters on MRR and TWR, and Spedding et al [31] selected a central composite experimental design for modelling the wire EDM process of an AISI 420 workpiece with a brass electrode.…”

Section: Introductionmentioning

confidence: 99%

Analytical Modelling of Energy Density and Optimization of the EDM Machining Parameters of Inconel 600

Salcedo

Puertas

Pérez

2017

Metals

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Abstract:In this present research work, a new modelling of energy density in EDM (Electrical Discharge Machining) is proposed. Energy density can be defined as the amount of energy needed to get a unit volume of material removed, and for its modelling, the whole EDM process has been taken into account. This new definition lets us quantify the energy density that is being absorbed by the workpiece and the electrode. Results are compared to those obtained by die sinking EDM in an Inconel ® 600 alloy using Cu-C electrodes. Currently, this material is of great interest for industrial applications in the nuclear, aeronautical and chemical sectors, due to their combinations of good mechanical properties, corrosion resistance and extreme hardness at very high temperatures. The experimental results confirm that the use of negative polarity leads to a higher material removal rate, higher electrode wear and higher surface roughness. Moreover, the optimal condition to obtain a maximum MRR (Material Removal Rate) of 30.49 mm 3 /min was: 8 A, 100 µs and 0.6, respectively, for the current intensity, pulse time and duty cycle.

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Section: Introductionmentioning

confidence: 99%

Analytical Modelling of Energy Density and Optimization of the EDM Machining Parameters of Inconel 600

Salcedo

Puertas

Pérez

2017

Metals

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“…The electrode rotation speed main parameter that affects output parameters followed by voltage, and the spark time. Full factorial design with three central point design of experiments (DOEs) is developed with a mathematical regression equation to predict the process parameters on machining stainless steel [14]. Input parameters are current, voltage, pulse on, and duty factor.…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental Investigation of Drilling Small Hole on Duplex Stainless Steel (SS 2205) Using EDM

Rajaram¹,

Rajkumar²,

Balasundaram³

et al. 2019

Mechanics and Mechanical Engineering

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This work investigates drilling of small holes of 3 mm in diameter on duplex stainless steel. Its machinability index is very low (0.66) when compared to other steels; hence, electrical discharge machining is used. The input parameters are current, spark gap, and dielectric pressure. Each input parameter is considered for three levels. Therefore, the total number of experiments is 3 × 3 × 3 = 27. To reduce the number of runs, Taguchi L9 orthogonal array is used, which have the advantage of maximum and minimum trial runs in its design. The output response is metal removal rate (MRR). To find the best operating parameter, the regression model generated using ANOVA is given as input for MATLAB genetic algorithm (GA). The experimental results indicated that models are significant. The test result indicated that the contribution of the current on the MRR is 42.42%, dielectric pressure is 35.36%, and spark gap is 1.93%. From GA, it is observed that among these three factors, lower value of current and dielectric pressure produced the maximum MRR. The SS 2205 has wide variety of applications, such as high pressure components and control valves, which have large number of components attached to it. Hence, performing micro holes on such high hardness alloy is useful.

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“…Electrode wear ratio and surface roughness are lower in ultrasonic assisted EDM. Dastagiri et al investigated EDM process parameters on stainless steel & En41b [33]. Material removal rate, tool wear rate, surface roughness, hardness parameters are controlled.…”

Section: Influence Of Electrical Process Parametersmentioning

confidence: 99%

Review of State of Art and Process Parameter Influence in EDM Technology

Abuthakeer¹,

Kaameswaran²,

chalam³

et al. 2017

IJETT

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Electric Discharge Machining (EDM) is a non-conventional machining process in which material is removed electrically by the application of a high voltage. Over the years the EDM process has cast itself into various specialized forms such as Wire cut EDM, EDM drilling etc. This paper presents a study of all the major improvements that have been implemented on EDM machining in the recent years. Various techniques proposed by researchers to improve the machining characteristics and to increase versatility of the EDM process have discussed in this paper. It should be noted that there is no well-defined relations between the electrical process parameters of an EDM process and the output variables like surface roughness, material removal rate etc. The influence of these material vary widely with material being machined. Hence, a study has been done on the influence of these parameters on the various process characteristics of EDM process.

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Experimental Investigation of EDM Parameters on Stainless Steel&En41b

Cited by 25 publications

References 6 publications

Analytical Modelling of Energy Density and Optimization of the EDM Machining Parameters of Inconel 600

Analytical Modelling of Energy Density and Optimization of the EDM Machining Parameters of Inconel 600

Experimental Investigation of Drilling Small Hole on Duplex Stainless Steel (SS 2205) Using EDM

Review of State of Art and Process Parameter Influence in EDM Technology

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