Study of electrical discharge machining parameters for mould steel AISI P20

Jamkamon, Kamonpong; Janmanee, Pichai

doi:10.5481/kkuenj.2013.40.1.11

Cited by 3 publications

(2 citation statements)

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“…The inclination of the wall surfaces and holes as electrode materials will be heated by the reactor power into heat until melted and remove debris caused by the substance fluid dielectric. After sparks, substance fluid dielectric through privatization will cause borne particles of material removed from the surface of the spark caused the spartans called Micro spark side between materials with electrodes until a wall surface slopes [7,8]. Influences that affect the taper and materials used in drilling Inconel 718 with the Micro-EDM.…”

Section: Hole Taper Of Workpiecementioning

confidence: 99%

Alloy Inconel 718 by 3D Micro-Electro Discharge Machining

Kumkoon

Raksiri

Jansuwan

2014

AMM

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This article aims to show the effects of the Micro-EDM process that influences the hole taper by comparing the parameters values during micro-drilling hole on the inconel 718 material. The condition of Micro-EDM drilling spark on the surface workpiece was 300 μm of depth and 200 μm of diameter tungsten carbide electrode. The experiment was carried out under the cover of hydrocarbon, using fluid dielectric cooling. The experiment parameters included on-time duty factor, off-time, voltage, frequency, and current, respectively. The experiment, it was found that the hole taper an immense effect on the machinability of drilling the workpieces, cause melting and recasting in the spark area, making a decrease in the ability of debris removal. Moreover, the experiment result, the tapered workpiece showed a minimized is 16.87 s, when using parameters at current 32 mA, frequency 150 Hz, and voltage 110 v, respectively. The optimal parameters to affected minimum hole taper is 0.195 degree, when using parameters at current 32 mA, frequency 130 Hz, and voltage 110 v, respectively.

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Section: Hole Taper Of Workpiecementioning

confidence: 99%

Alloy Inconel 718 by 3D Micro-Electro Discharge Machining

Kumkoon

Raksiri

Jansuwan

2014

AMM

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“…Bai et al developed the electrical discharge surface alloying of the superalloy Haynes 230 with Al and Mo. The product specimen uses the Al-Mo electrode with a positive polarity shows an alloyed layer constituted mainly of NiAl phase [6]. Che-Chung Wang et al conducted an experiment studying the surface characteristics of Ni-based superalloys and found that a positive process could create a thicker recast layer than with negative polarity [5].…”

Section: Introductionmentioning

confidence: 99%

Effects of Cu-Zn-Ni Electrode during EDM of SUS 304 Material

Janmanee

Chuvaree

Jamkamon

2014

AMM

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In this study, experiments were performed to study the effects of electrode materials mixed with nickel in electrical discharge machining (EDM) of SUS 304 material. Experiments were constructed using parameters consisting of pulse-on time, pulse-off time, discharge current and electrode polarity, respectively. The analysis of structural features of the surface was accomplished using a scanning electron microscope (SEM) as well as an element analysis created on the surface, after the EDM process, by using Energy-dispersive x-ray spectroscopy (EDS). The results of the experiments found that nickel elements in the electrode material have an effect on the working performance of material removal rate and electrode wear ratio. The electrode wear ratio reduces when nickel elements increase. Moreover, the surface roughness had the lowest level at electrode 15 % nickel element. Thus, electrode wear during the EDM process of nickel element from electrodes and other elements, combined with surface metalworking, becomes a recast layer of nickel.

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Deep Hole of AISI P20 Mold Steel Material by Electrical Discharge Machining

Jamkamon

Janmanee

2014

AMM

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This research aimed to study the machining efficiency of AISI P20 steel by Electrical Discharge Machining (EDM) using rod copper electrode to machining material by 50 mm depth of machining was mainly assessed from Materials Removal Rate (MRR) and Electrode Wear Ratio (EWR). From the experiment designed to use Taguchi technique of data analysis and suitable parameter prediction, the highest MRR was at on-time of 150 μs, off-time of 2 μs and electric current level was at 15 A or 0.25 A/mm2. Predicted value was at 19.2395 mm3/min which was equal to real experiment, showing Materials Removal Rate of 19.647 mm3/min (with error of 2.12 percent) .Moreover, it was found that gap would increase with the size of electrode and depth of machining caused by movement of particles removed from side surface of electrode, which cause micro sparks at the side of the material workpiece.

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Study of electrical discharge machining parameters for mould steel AISI P20

Cited by 3 publications

References 0 publications

Alloy Inconel 718 by 3D Micro-Electro Discharge Machining

Alloy Inconel 718 by 3D Micro-Electro Discharge Machining

Effects of Cu-Zn-Ni Electrode during EDM of SUS 304 Material

Deep Hole of AISI P20 Mold Steel Material by Electrical Discharge Machining

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