Dimensional Accuracy in Dry Micro Wire Electrical Discharge Machining

Ali, Mohammad Yeakub; Banu, Asfana; Salehan, Muhammad; Adesta, Erry Yulian Triblas; Hazza, Muataz Hazza Faizi Al; Shaffiq, Muhammad

doi:10.15282/jmes.12.1.2018.4.0298

Cited by 25 publications

(1 citation statement)

References 36 publications

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“…Electrical Discharge Machine (EDM) [1] has become the most popular and extensively recognised non-traditional machining processes [2] particularly in the die making industries [3]. The process is used to produce very complex shapes irrespective of hardness in the electrically conductive material [4][5][6]. EDM is a thermoelectric advanced machining process which works based on the principle of tranformation of electric into thermal energy.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on electro-discharge surface modification phenomenon of P20+Ni die steel using green P/M composite electrode

Ramdatti

Gohil²,

Dave

2021

JMES

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In the present work, attempts have been made to optimize the EDM process with an aspect of surface modification of AISI P20+Ni die steel using powder metallurgy (P/M) electrode. Experiments have been performed according to central composite rotatable (CCD) design using response surface methodology (RSM). Effects of compaction pressure (Cp), peak current (Ip), pulse-on time (Ton), and duty cycle (τ) were correlated with surface roughness (SR) and microhardness (MH). Adequacy of mathematical model has been checked by performing ANOVA. Composite desirability approach was used to obtain optimal set of parameters for minimum SR and maximum MH. The errors between the predicted and experimental value of responses at the optimal set of parameters for SR and MH maintain within 5.26% and -3.64% respectively. Scanning electron microscope and energy dispersive spectroscopy analysis confirmed the transfer of P/M electrode material on the work surface. The result indicates three times improvement in microhardness of EDMed surface.

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Section: Introductionmentioning

confidence: 99%

Experimental investigation on electro-discharge surface modification phenomenon of P20+Ni die steel using green P/M composite electrode

Ramdatti

Gohil²,

Dave

2021

JMES

View full text Add to dashboard Cite

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Investigation of process parameters for stable micro dry wire electrical discharge machining

Banu

Ali

Rahman

et al. 2019

Int J Adv Manuf Technol

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Micro dry wire electrical discharge machining (μDWEDM) is a process where gas is used as the dielectric fluid instead of a liquid. In this process , certain modifications of wire electrical discharge machining (WEDM) are needed during the machining operation to achieve stable machining. Smooth and stable machining operation in μDWEDM process remains as a critical issue. Thus, this paper presents the investigation of process parameters for a stable μDWEDM process. The investigation was performed on a stainless steel (SS304) with a tungsten wire as the electrode using integrated multi-process machine tool, DT 110 (Mikrotools Inc., Singapore). View all related documents based on references

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Stability of micro dry wire EDM: OFAT and DOE method

Banu

Ali

Rahman

et al. 2020

Int J Adv Manuf Technol

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Micro dry wire electrical discharge machining (μDWEDM) is an environmental-friendly machining process where gas is used as the dielectric fluid instead of liquid. In this process, certain modifications of wire electrical discharge machining (WEDM) are required during the machining operation for stable machining. In μDWEDM, the process is considered stable if the machining is continuous without any interruption due to wire breakage or wire lag. However, in the present state of the arts, stable and smooth machining process using μDWEDM remains a critical issue. Hence, the objectives of this research are to establish a stable μDWEDM process using two different experimental approaches: one-factor-at-a-time (OFAT) and design of experiment (DOE) method. The investigation was performed on a stainless steel (SS304) with a tungsten wire as the electrode using integrated multiprocess machine tool, DT 110 (Mikrotools Inc., Singapore). Types of dielectric fluid, dielectric fluid pressure, polarity, threshold voltage, wire tension, wire feed rate, wire speed, gap voltage, and capacitance were the controlled parameters. The machining length of the microchannels was measured using scanning electron microscope (SEM) (JEOL JSM-5600, Japan). Analysis based on these two experimental approaches shows that stable μDWEDM process is achievable when the types of dielectric fluid, dielectric fluid pressure, polarity, threshold voltage, wire tension, wire feed rate, and wire speed remain as the fixed parameters while the capacitance and gap voltage remain as the controlled parameters.

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Dimensional Accuracy in Dry Micro Wire Electrical Discharge Machining

Cited by 25 publications

References 36 publications

Experimental investigation on electro-discharge surface modification phenomenon of P20+Ni die steel using green P/M composite electrode

Experimental investigation on electro-discharge surface modification phenomenon of P20+Ni die steel using green P/M composite electrode

Investigation of process parameters for stable micro dry wire electrical discharge machining

Stability of micro dry wire EDM: OFAT and DOE method

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