Experimental Investigation on the Electrode Specific Performance in Micro-EDM of Die-Steel

Kadirvel, A.; Hariharan, P.; Gowri, S.

doi:10.1080/10426914.2013.763959

Cited by 34 publications

(10 citation statements)

References 20 publications

(22 reference statements)

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“…Among the three electrodes, AgW was chosen as the best choice for the finishing micro-EDM of WC. Kadirvel et al [109] compared different electrodes during micro-EDM of EN24 die steel. AgW achieved better removal rate when compared to CuW and W electrodes, but inferior to copper electrodes.…”

Section: Silver Tungsten (Agw)mentioning

confidence: 99%

Materials used for sinking EDM electrodes: a review

Czelusniak

Higa

Torres

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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Over the years, sinking electrical discharge machining has become one of the most important production technologies to manufacture very accurate three-dimensional complex components on any electrically conductive material. This article reports a literature review on the diversity of conventional and non-conventional materials that are used or have potential to be used as EDM electrodes. In addition, additive manufacturing of EDM electrodes are also reviewed. Keywords Sinking electrical discharge machining • EDM electrodes • Materials for electrodes • Additive manufacturing List of symbols î e Discharge current (A) t 0 Pulse interval time (μs) p in Dielectric inlet pressure (Pa) t d Ignition delay time (μs) t e Discharge duration (μs) t i Pulse duration (μs) t p Pulse cycle time (μs) u e Discharge voltage (V) û i Open-circuit voltage (V) V e Electrode wear rate (mm 3 /min) V w Material removal rate (mm 3 /min) W e Discharge energy (J)

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Section: Silver Tungsten (Agw)mentioning

confidence: 99%

Materials used for sinking EDM electrodes: a review

Czelusniak

Higa

Torres

et al. 2018

J Braz. Soc. Mech. Sci. Eng.

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“…With the developing of miniaturization trends, micro EDM has become one of the most effective and economical manufacturing processes in the area of micro-electromechanical systems (MEMS), high-precision masks and micro nozzles, because of its non-contact machining characteristics [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Effect of Electrode Size on the Performances of Micro-EDM

Liu

Zhang

Zhu

et al. 2015

Materials and Manufacturing Processes

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Understanding the effect of processing parameters on the tool electrode wear during micro electrical discharge machining (Micro EDM) is helpful to predict and compensate the electrode wear, so as to improve the machining precision. In this paper, experiments are carried out and the influences of tool electrode diameter on the micro EDM process are discussed based on the skin effect and area effect. It is demonstrated that the machining speed, tool wear and taper rate are different with the increase of tool electrode diameter. Due to the skin effect and area effect, larger electrode diameter results in higher material removal rate along with higher tool wear rate. The electrode material removal increment is more than the workpiece material removal increment with the increase of tool electrode diameter, which leads to the increase of relative tool wear ratio. Discharge energy is concentrated on the tool surface which enhances the possibility of discharge on the side face and the corner of the tool electrode during the micro EDM, especially when drilling with a larger tool electrode. As a result, a tool electrode with larger diameter results in a higher taper rate.

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“…Meena and Azad [14] performed an analysis of micro electric discharge machining of Ti-6Al-4V alloy in order to identify the significant process variable on MRR and TWR. Kadirivel et al [15] conducted experimental investigations with different tool electrodes to test their ability to machine die-steel in µEDM. Tool electrode materials were identified as tungsten, copper tungsten and silver tungsten to conduct the experiments.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations into the Effects of Microelectric-Discharge Milling Process Parameters on Processing Ti–6Al–4V

Kuriachen

Mathew

2014

Materials and Manufacturing Processes

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Micro electric discharge milling is acquiring more importance in micro manufacturing because of its unique ability to produce three dimensional micro cavities with high aspect ratio in electrically conductive advanced materials regardless of its mechanical properties. The present study investigates the effects of major micro electric -discharge milling process variables (Voltage (V), Capacitance(C), electrode rotational speed (ERS) and feed rate (FR)) on Ti-6Al-4V. The output performance measures were identified as material removal rate (MRR) and tool wear rate (TWR) to assess the machinability of Ti-6AL-4V. Experiments were designed and carried out based on response surface methodology-Box Behnken statistical design. The most influencing parameters for responses (MRR, TWR) were found to be capacitance and feed rate. At a capacitance of 0.4 µF and feed rate of 18 mm/min, maximum MRR of 0.9756 mg/hr and TWR of 0.6342 mg/hr were observed. Similarly at 0.01 µF and 6mm/min, minimum MRR of 0.2308 mg/hr and TWR of 0.1259 mg/hr were obtained. Downloaded by [UNAM Ciudad Universitaria] at 20:25 25 December 2014 2

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Experimental Investigation on the Electrode Specific Performance in Micro-EDM of Die-Steel

Cited by 34 publications

References 20 publications

Materials used for sinking EDM electrodes: a review

Materials used for sinking EDM electrodes: a review

Effect of Electrode Size on the Performances of Micro-EDM

Experimental Investigations into the Effects of Microelectric-Discharge Milling Process Parameters on Processing Ti–6Al–4V

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