Electrical Discharge Machining (EDM) Characteristics Associated with Electrical Discharge Energy on Machining of Cemented Tungsten Carbide

Lin, Yufeng; Chen, Yong; Chen, Lin; Tzeng, Hsinn-Jyh

doi:10.1080/10426910801938577

Cited by 88 publications

(51 citation statements)

References 17 publications

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“…Figures 2(a) and 2(c) show that MRR increases with the increase in pulse-on time and current, which is similar to the findings of previous literature [17,29]. MRR increases with the increase in current and pulse-on time because of the generation of high temperature between the electrodes, which can result in excessive melting and evaporation of the material out of the workpiece surface.…”

Section: One-variable-at-a-time Approachsupporting

confidence: 89%

“…Mahdavinejad [3] EDM of WC-Co Lin et al [17] EDM characteristics associated with electrical discharge energy on machining of cemented tungsten carbide Kung et al [18] The material removal rate and electrode wear ratio on the powder mixed electrical discharge machining of cobaltbonded tungsten carbide Jahan et al [19] Modeling and experimental investigation on the effects of nano powder-mixed dielectric in micro-electro discharge machining of tungsten carbide Shayan et al [20] Parametric study of the selection of optimal solutions in dry wire cut machining of cemented tungsten carbide (WC-Co) Assarzadeh and Ghoreishi [21] Statistical modeling and optimization of process parameters in electro-discharge machining of cobalt-bonded tungsten carbide composite (WC/6%Co) Green EDM Tan et al [22] A decision-making framework model of cutting fluid selection for green manufacturing and a case study…”

Section: Mahdavinejad Andmentioning

confidence: 99%

“…Several researchers, such as Jeswani [12], Wong et al [13], Kumar et al [14], and Han et al [15] used graphite powder for EDM of DTM materials and found it significantly useful. This process assisted us in selecting the graphite powder as abrasive in EDM of WC-Co. Table 1 [3,[17][18][19][20][21][22][23][24][25][26][27][28] describes the work done and gaps in literature with respect to EDM of WC. Jeswani [12] investigated EDM with distilled water and kerosene oil as dielectric fluid.…”

Section: Introductionmentioning

confidence: 98%

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Assessing the effects of different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine material (WC-Co)

Singh

Sharma

2016

Front. Mech. Eng.

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Electrical discharge machining (EDM) is a well-known nontraditional manufacturing process to machine the difficult-to-machine (DTM) materials which have unique hardness properties. Researchers have successfully performed hybridization to improve this process by incorporating powders into the EDM process known as powder-mixed EDM process. This process drastically improves process efficiency by increasing material removal rate, micro-hardness, as well as reducing the tool wear rate and surface roughness. EDM also has some input parameters, including pulse-on time, dielectric levels and its type, current setting, flushing pressure, and so on, which have a significant effect on EDM performance. However, despite their positive influence, investigating the effects of these parameters on environmental conditions is necessary. Most studies demonstrate the use of kerosene oil as dielectric fluid. Nevertheless, in this work, the authors highlight the findings with respect to three different dielectric fluids, including kerosene oil, EDM oil, and distilled water using one-variable-at-a-time approach for machining as well as environmental aspects. The hazard and operability analysis is employed to identify the inherent safety factors associated with powder-mixed EDM of WC-Co.

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Section: One-variable-at-a-time Approachsupporting

confidence: 89%

Section: Mahdavinejad Andmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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Assessing the effects of different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine material (WC-Co)

Singh

Sharma

2016

Front. Mech. Eng.

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“…Although extensive research work has been reported on EDM characteristics, it suffers from a few limitations such as low machining efficiency, tool electrode wear and over cut. To overcome these limitations, researchers [3][4][5][6][7][8][9][10] have conducted various studies. Rajurkar and Lin [11] have conducted an extensive review on machining of titanium alloy using EDM and related influencing factors.…”

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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“…Modern field-emission theories and thermal field emission theories, especially F-N equation descriptions, demonstrated that electrons escaping from surface needed to overcome surface barriers to work, which would translate into heat energy, and gave the reactive functions of material [6][7][8]. Mao, C et al conducted that with longer pulse-on time, the power available between the anode and cathode becomes greater, thus strengthening discharge energy [9]. Liu et al [10] derived electrodes complied with skin effect when flowing through the electrodes, which gave space boundary conditions for energy analysis of material removal [11].…”

Section: Introductionmentioning

confidence: 99%

Study of the method during Micro- EDM Process

Liu¹,

Hana²

2015

Proceedings of the 2015 International Conference on Structural, Mechanical and Material Engineering

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Abstract-In this paper, the work energy on the machined surface during electrical discharge machining (short in EDM) process were modeling analyzed based on the electron field emission theory, electron sputtering theory and the effect of resistance heat of electron current when the tool electrode is positive. A series of single-hole EDM experiments and the metallographic examinations were designed. The study shows that the concentration ratio of the work energy on the machined surface increase with the increase of the equivalent radius ratio of real discharging area and the area of workpiece end surface and the reduction of the interelectrode discharging current. While it can be obtained that the ratio of the resistance heat to the total work energy increase with the decrease of the equivalent radius ratio of real discharging area and the area of workpiece end surface and the increase of the interelectrode discharging current.

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Electrical Discharge Machining (EDM) Characteristics Associated with Electrical Discharge Energy on Machining of Cemented Tungsten Carbide

Cited by 88 publications

References 17 publications

Assessing the effects of different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine material (WC-Co)

Assessing the effects of different dielectrics on environmentally conscious powder-mixed EDM of difficult-to-machine material (WC-Co)

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

Study of the method during Micro- EDM Process

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