Parameter Optimization of EDM Characteristics on Ti-6Al-4V Using Different Electrodes

Sumanth, P.; Reddy, Madhusudhan; Shaik, Imran; Maddu, Jagadeeswara Rao

doi:10.1088/1757-899x/1185/1/012022

Cited by 3 publications

(4 citation statements)

References 8 publications

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“…Among them, usage of this alloy in some applications, such as medical implants, wastewater treatment plants, etc., requires antibacterial coating [ 12 ]. Copper material has proven antibacterial activity since it helps to increase human immunity [ 13 ]. So, in this work, copper material was proposed as coating material.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Bronze Electrode in Electrical Discharge Coating Process for Copper Coating

et al. 2023

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One of the widely used non-traditional machines for machining of hard materials into complex shapes and different sizes is the electrical discharge machine (EDM). Recently, the EDM has been used for deposition by controlling the input parameters (current and duty cycle). This work was carried out to evaluate the readily available bronze (88% Cu + 12% Sn) electrode for deposition of copper material on titanium alloy. Experiments were conducted according to Taguchi experimental design considering the input parameters of current, Ton, Toff and preheating temperature of substrates. Titanium alloy was further hardened by preheating at temperatures of 100 °C, 300 °C and 500 °C and quenching in brine, castor oil and vegetable oil in order to avoid workpiece erosion. After this treatment, hardness, grain area, grain diameter and number of grains were characterized to compare with pretreated substrates. Then, the treated substrates were taken for copper deposition with the EDM. Output parameters such as material deposition rate (MDR), electrode wear rate (EWR), coating thickness (CT), elemental composition and surface crack density (SCD) were found. Material characterization was carried out using a scanning electron microscope (SEM) with energy dispersive X-ray spectroscopy (EDX) and optical microscopy. Output parameters were optimized with technique for order of preference by similarity to ideal solution (TOPSIS) to find optimum parameters. A sixth experiment with parameter values of Ton of 440 µs, Toff of 200 µs, preheating temperature of 300 °C and quenching medium of castor oil was optimum with MDR of 0.00506 g/m, EWR of 0.00462 g/m, CT of 40.2 µm and SCD 19.4 × 107 µm2.

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Section: Introductionmentioning

confidence: 99%

Evaluation of Bronze Electrode in Electrical Discharge Coating Process for Copper Coating

et al. 2023

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“…However, traditional EDM often uses a hard electrode, and it has some problems such as an uncontrollable discharge gap, an unstable deposition transition process, and unevenly deposited material, making its application in complex surface processing limited. 29 Therefore, in order to solve the abovementioned problems and to compensate for the defects of electroplating and conventional EDM, we design a flexible brush electrode (silver brush), which has the ability to adapt to complex groove interiors in EDM. The use of the flexible brush electrode in EDM allows the antimicrobial silver to be deposited uniformly onto the titanium microgrooved surface in a metallurgical bond that is strong and resistant to peeling.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, electrical discharge machining (EDM) is also a promising method because the EDM deposited layer is metallurgically bonded to the substrate with high bond strength and does not flake easily. However, traditional EDM often uses a hard electrode, and it has some problems such as an uncontrollable discharge gap, an unstable deposition transition process, and unevenly deposited material, making its application in complex surface processing limited …”

Section: Introductionmentioning

confidence: 99%

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Electric Spark Deposition of Antibacterial Silver Coating on Microstructured Titanium Surfaces with a Novel Flexible Brush Electrode

Shi

Zhang

et al. 2022

ACS Omega

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Infection caused by orthopedic titanium implants, which results in tissue damage, is a key factor in endosseous implant failure. Given the seriousness of implant infections and the limitations of antibiotic therapy, surface microstructures and antimicrobial silver coatings have emerged as prominent research areas and have displayed certain antimicrobial effects. Researchers are now working to combine the two to produce more effective antimicrobial surfaces. However, building robust and homogeneous coatings on complex microstructured surfaces is a tough task due to the limits of surface modification techniques. In this study, a novel flexible electrode brush (silver brush) instead of a traditional hard electrode was designed with electrical discharge machining, which has the ability to adapt to complex groove interiors. The results showed that the use of flexible electrode brush allowed silver to be deposited uniformly in titanium alloy microgrooves. On the surface of Ag-TC4, a uniformly covered deposit was visible, and it slowly released silver ions into a liquid environment. In vitro bacterial assays showed that a Ag-TC4 microstructured surface reduced bacterial adhesion and bacterial biofilm formation, and the antibacterial activity of Ag-TC4 against Staphylococcus aureus and Escherichia coli was 99.68% ± 0.002 and 99.50% ± 0.007, respectively. This research could lay the groundwork for the study of antimicrobial metal bound to microstructured surfaces and pave the way for future implant surface design.

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Optimization of pulse on time to improve quality of microplate implants produced by EDM die-sinking

Kurniawan,

Ariyatmoko,

Murdiwati Putri

et al. 2024

J Braz. Soc. Mech. Sci. Eng.

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Parameter Optimization of EDM Characteristics on Ti-6Al-4V Using Different Electrodes

Cited by 3 publications

References 8 publications

Evaluation of Bronze Electrode in Electrical Discharge Coating Process for Copper Coating

Evaluation of Bronze Electrode in Electrical Discharge Coating Process for Copper Coating

Electric Spark Deposition of Antibacterial Silver Coating on Microstructured Titanium Surfaces with a Novel Flexible Brush Electrode

Optimization of pulse on time to improve quality of microplate implants produced by EDM die-sinking

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