Performance of Cu-Cr-Zr electrodes in electrical discharge machining of tungsten carbide composite material base using Taguchi method

Janmanee, Pichai

doi:10.1504/ijmmm.2016.077711

Cited by 5 publications

(9 citation statements)

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“…Electrical discharge machining (EDM) is a modern processing machining method for materials that are difficult to use with conventional methods [1][2][3] as a result of high hardness, high wear resistance, and other special properties [3][4][5][6][7][8][9]. EDM is a machining process that removes some of the work material from the workpiece using the high temperature produced by spark discharges to erode the workpiece [3,8,10].…”

Section: Introductionmentioning

confidence: 99%

Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode

Jamkamon

Janmanee

2021

Applied Sciences

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The performance of electrical discharge machining for drilling holes decreases with machining depth because the conventional flushing and electrode cannot completely eliminate debris particles from the machining area. In this study, a modified electrode for self-flushing in the electrical discharge machining process with a step cylindrical shape was designed to improve machining performance for deep hole drilling. The experimental results of the step cylindrical electrode showed that the material removal rate increased by approximately 215.7%, 203.8%, and 130.4%, and the electrode wear ratio decreased by approximately 47.2%, 63.1%, and 37.3%, when compared with a conventional electrode for the diameters of 6, 9, and 12 mm, respectively. In addition, the gap clearance and concavity of the side wall of the drilled hole was reduced with the step cylindrical electrode. The limited high flank of the electrode led to an increase in the escape area of the debris that was partially removed from the machining area, and the limited secondary spark on the side wall of the electrode resulted in a reduction in machining time.

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Section: Introductionmentioning

confidence: 99%

Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode

Jamkamon

Janmanee

2021

Applied Sciences

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“…Figure 11 shows the densities of the Cu-Ni-TiN electrodes. The values are similar, except for the 85% Cu-3% Ni-12% TiN electrode fabricated at a pressure of 20 MPa, which had the highest density (8.5472 g/cm 3 ). The 80% Cu-3% Ni-17% TiN electrode fabricated at a pressure of 18 MPa exhibited a density of 5.89439 g/cm 3 .…”

Section: Density/porosity Resultsmentioning

confidence: 73%

“…The values are similar, except for the 85% Cu-3% Ni-12% TiN electrode fabricated at a pressure of 20 MPa, which had the highest density (8.5472 g/cm 3 ). The 80% Cu-3% Ni-17% TiN electrode fabricated at a pressure of 18 MPa exhibited a density of 5.89439 g/cm 3 . The different densities are due to the different properties and shapes of the metal powders, as well as the sintering process [37,38].…”

Section: Density/porosity Resultsmentioning

confidence: 73%

“…The main and essential factors for efficiency in material processing include workpiece material, electrode material, experimental conditions such as duty factor, gap, pulse current and open circuit voltage, fluid dielectric substances, etc. [3,4]. The cutting tools, called electrodes, for the EDM process are essential.…”

Section: Introductionmentioning

confidence: 99%

“…The cutting tools, called electrodes, for the EDM process are essential. It is important to consider the appropriate use for the workpiece material, especially with special hardness material such as tungsten carbide, which is difficult to form due to its high hardness and high melting point [3][4][5]. Therefore, it is imperative to select the appropriate electrode material in order to obtain good results after processing in terms of precision in both size and surface roughness, as well as workpiece surfaces free from small cracks [4].…”

Section: Introductionmentioning

confidence: 99%

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Characteristics of Ternary Metal (Cu-Ni-TiN) Electrodes Used in an Electrical Discharge Machining Process

Saodaen

Janmanee

Rodchanarowan

2021

Metals

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In the industrial field, electric discharge machining (EDM) is the most commonly used non-traditional machining process because it has the potential to machine electrically conductive materials of high hardness. To satisfy the need for rapid and economical fabrication of EDM electrodes, techniques that use the addition of more metal in the manufacturing process are gaining in popularity. This study presents an investigation of the characterization of ternary metals (Cu–Ni–TiN) for EDM electrodes by using powder metallurgy, which leads to enhancement of the mechanical properties, such as the hardness, electrical properties, and other properties, for the formation of Cu in Ni-TiN electrodes using a cold press at pressures of 18, 20, and 22 MPa. The influences of the parameters of this process were identified for the betterment of Cu–Ni–TiN on the surface. The specimens were calcined in a furnace at 1100 °C for 1 h, with a mixture of argon and hydrogen gas as a controlled gas in the ratio of 95:5. The specimens were investigated in terms of hardness, electric resistivity, apparent density, and porosity. The results show that the 80% Cu–3% Ni–17% TiN electrode at 18 MPa had the highest hardness (124.38 HV) and the lowest electric resistivity (0.39188 cm), while the specimen increased Cu with a ratio of 85% Cu–3% Ni–12% TiN, and a pressure of 20 MPa was found to have the highest density (8.5472 g/cm3) and the lowest porosity (6.2922%). As a further confirmation of the above results, the X-ray diffraction (XRD) patterns of the surfaces of the specimens exhibited major phases that supported the ternary Cu–Ni–TiN phase. However, we also achieved the successful use of Cu–Ni–TiN electrodes as a titanium source (as an alternative to the conventional metal powder) to provide a novel approach to fabricating composite electrodes through the EDM process.

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Controlling corrosion rate of Magnesium alloy using powder mixed electrical discharge machining

Razak

Rani

Saad

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Performance of Cu-Cr-Zr electrodes in electrical discharge machining of tungsten carbide composite material base using Taguchi method

Cited by 5 publications

References 0 publications

Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode

Improving Machining Performance for Deep Hole Drilling in the Electrical Discharge Machining Process Using a Step Cylindrical Electrode

Characteristics of Ternary Metal (Cu-Ni-TiN) Electrodes Used in an Electrical Discharge Machining Process

Controlling corrosion rate of Magnesium alloy using powder mixed electrical discharge machining

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