Optimization of the EDM Drilling Process to Increase the Productivity and Geometrical Accuracy

Risto, M.; Haas, R.; Munz, M.

doi:10.1016/j.procir.2016.02.247

Cited by 23 publications

(17 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The geometrical accuracy by adjusting discharge energy and electrode diameter and its influence on the amount of MRR were investigated [8]. Four different electrode diameters ranging from 1.6 to 1.9 mm diameters are used to achieve the desired hole on D2 tool steel/Tool steel X153CrMoV12-1.…”

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

View full text Add to dashboard Cite

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.

show abstract

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

View full text Add to dashboard Cite

show abstract

“…The Positive polarity has more machining efficiency and low relative wear in short pulse and moderate electrical parameters are suggested [7]. The geometrical accuracy by adjusting Discharge energy and electrode diameter and influences on the amount of MRR was investigated [8]. Four different electrode diameters ranged from 1.6 mm to 1.9 mm diameters are used to achieve the desired hole on D2 tool steel/Tool steel X153CrMoV12-1.…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental Investigation of Drilling Small Hole on Duplex Stainless Steel (SS2205) Using EDM

Rajaram

Rajkumar

Balasundaram

et al. 2018

Mechanics and Mechanical Engineering

View full text Add to dashboard Cite

This work investigates drilling of small holes of Ø 3 mm on duplex Stainless Steel. Its machinability index is very low (0.66) as compared to other steels, hence Electrical Discharge Machine is used. The input parameters are Current, Spark Gap & Di electric Pressure. Each input parameter is considered for 3 levels. Therefore total number of experiments is 3×3×3 – 27. To reduce the number of runs, Taguchi L9 orthogonal array is used, which is having advantage of maximum and minimum trial runs in its design. The output response is metal removal rate. To find the best operating parameter, the regression model of ANOVA is given to input of MAT Lab-Genetic Algorithm. The experimental results indicated that models are significant. The test result indicated that the contributions of current is 42.42%, Di electric pressure is 35.36% and Spark gap is 1.93% on metal removal rate. From Genetic Algorithm it is observed among three levels of factors, lower value of current and Di electric pressure produced maximum metal removal rate. The SS 2205 has wide variety of applications such as high pressure components, control valves etc., which are having large number of components to it. Hence performing micro holes on such high hardness alloy is useful.

show abstract

“…Generally, the following methods are used in EDM to remove debris deposits: Z-axis retraction, flushing, EDM parameter optimization, and electrode planetary motion. 7–14 However, large-scale machining and hemisphere machining involve area effect as well as materials with special geometric shapes that hinder machining debris removal. Therefore, this study combined slotted electrodes with rotary machining to improve the debris removal effect, increase MRRs, obtain the optimal slotted electrode model, and analyze the electrical discharge waveforms.…”

Section: Introductionmentioning

confidence: 99%

Effect of slotted electrodes on improvement in machining performance of large-scale electrical discharge machining

Jiang

2018

Proceedings of the Institution of Mechanical Engineers, Part B:

View full text Add to dashboard Cite

Under special conditions, electrical discharge machining is prone to experiencing poor machining removal rate. This creates debris deposits that lead to decreased machining efficiency and poorer machining quality in the machining workpieces during machining operations. Thus, the present study investigated the use of slotted electrodes to improve machining debris removal and compared the machining capability of such electrodes with that of cylindrical, nonslotted electrodes. Concurrently, oscilloscopes were used to measure the machining voltage and current signals during the machining process, in which waveforms were analyzed to gain insight into the electrical discharge condition of the electrical discharge machining. Compared with general cylindrical, nonslotted electrodes, the deep slotted electrodes improved the material removal rate on large-scale and hemisphere electrical discharge machining result by 91% and 116.7%, respectively. The experiment results also show that slotted electrodes are inapplicable to finishing operations. Therefore, during roughing operations, slotted electrodes should be used to lower machining time; during finishing operations, cylindrical, nonslotted electrodes should be used to adjust machining precision.

show abstract

Optimization of the EDM Drilling Process to Increase the Productivity and Geometrical Accuracy

Cited by 23 publications

References 2 publications

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

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

Experimental Investigation of Drilling Small Hole on Duplex Stainless Steel (SS2205) Using EDM

Effect of slotted electrodes on improvement in machining performance of large-scale electrical discharge machining

Contact Info

Product

Resources

About