Surfactant and graphite powder–assisted electrical discharge machining of titanium alloy

Kolli, Murahari; Kumar, Adepu

doi:10.1177/0954405415579019

Cited by 58 publications

(31 citation statements)

References 33 publications

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“…However, a good finishing without compromise of the material's crystal arrangement or initial performance was achieved. Addition of graphite powder and the surfactant to the dielectric fluid greatly reduced the thickness of the formed recast layer, thereby enhancing the biomedical performance of Ti-6Al-4V [38]. A reasonable transfer of material between the dielectric additives, electrodes materials, was observed during AM-EDM of die steels [39,40].…”

Section: Introductionmentioning

confidence: 92%

“…Although a hard and adhesive recast layer is expected to enhance the corrosion and wear resistance of the metallic implant, a thick recast layer should be avoided or polished, to reduce the risk of the implant mechanical failure [149]. The recast layer thickness largely depends on the dielectric fluid type, the pulse-on time, and the powder concentration [11,38]. EDM with kerosene as dielectric fluid produces thinner and porous recast layer as well as finer and harder surface when compared to water emulsion.…”

Section: Formation and Influence Of Recast Layer On Edmedmentioning

confidence: 99%

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A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Aliyu

Rani

Ginta

et al. 2017

Advances in Materials Science and Engineering

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Surface treatment remained a key solution to numerous problems of synthetic hard tissues. The basic methods of implant surface modification include various physical and chemical deposition techniques. However, most of these techniques have several drawbacks such as excessive cost and surface cracks and require very high sintering temperature. Additive mixed-electric discharge machining (AM-EDM) is an emerging technology which simultaneously acts as a machining and surface modification technique. Aside from the mere molds, dies, and tool fabrication, AM-EDM is materializing to finishing of automobiles and aerospace, nuclear, and biomedical components, through the concept of material migrations. The mechanism of material transfer by AM-EDM resembles electrophoretic deposition, whereby the additives in the AM-EDM dielectric fluids are melted and migrate to the machined surface, forming a mirror-like finishing characterized by extremely hard, nanostructured, and nanoporous layers. These layers promote the bone in-growth and strengthen the cell adhesion. Implant shaping and surface treatment through AM-EDM are becoming a key research focus in recent years. This paper reports and summarizes the current advancement of AM-EDM as a potential tool for orthopedic and dental implant fabrication. Towards the end of this paper, the current challenges and future research trends are highlighted.

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Section: Introductionmentioning

confidence: 92%

Section: Formation and Influence Of Recast Layer On Edmedmentioning

confidence: 99%

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Aliyu

Rani

Ginta

et al. 2017

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Second phase experimentation has been conducted by adding surfactant in these dielectrics. Span 20 (chemical composition = C18H34O6) is used as a surfactant for developing a homogeneous powder mixture in the dielectric [31]. Table 4 shows the selection of input parameter and their level as machining factors such as pulse on time, pulse off time, gap voltage and fluid level.…”

Section: Methodsmentioning

confidence: 99%

“…Two mostly used dielectric fluids such as deionised water and kerosene are applied in the present study. The performance efficiency of powder mixed WEDM is strongly dependent on the conductivity of the dielectric when current pusses through it [31]. Due to changes in dielectrics conductivity, their influence in responses is different in nature.…”

Section: Influence Of Machining Parameter and Dielectric Fluid On Mrrmentioning

confidence: 99%

Performance Analysis on Eco-friendly Machining of Ti6Al4V using Powder Mixed with Different Dielectrics in WEDM

Chakraborty

Mitra

Bose

2020

IJAME

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The recent scenario of modern manufacturing is tremendously improved in the sense of precision machining and abstaining from environmental pollution and hazard issues. In the present work, Ti6Al4V is machined through wire EDM (WEDM) process with powder mixed dielectric and analyzed the influence of input parameters and inherent hazard issues. WEDM has different parameters such as peak current, pulse on time, pulse off time, gap voltage, wire speed, wire tension and so on, as well as dielectrics with powder mixed. These are playing an essential role in WEDM performances to improve the process efficiency by developing the surface texture, microhardness, and metal removal rate. Even though the parameter’s influencing, the study of environmental effect in the WEDM process is very essential during the machining process due to the high emission of toxic vapour by the high discharge energy. In the present study, three different dielectric fluids were used, including deionised water, kerosene, and surfactant added deionised water and analysed the data by taking one factor at a time (OFAT) approach. From this study, it is established that dielectric types and powder significantly improve performances with proper set of machining parameters and find out the risk factor associated with the PMWEDM process.

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“…S/N response graph for SRDuring pulse on time the heat energy melts the work piece in the time period.This energy splits into huge number of sparks which decrease the crater size results in increase of surface finish[12]. The impact and consequence of pulse on time is greater for SR.…”

mentioning

confidence: 99%

Parametric optimization of Edm on Hastelloy C-276 Using Taguchi L18 Technique

Basha¹,

Kolli²,

Raju³

2018

IJET

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Due to development in machining science the use of composites and alloys is a great deal for every industry. Hastelloy C276 the most versatile corrosion resistant nickel based super alloy which is used for industrial applications is considered for doing the experiments .The high nickel and molybdenum content provides better corrosion resistance at extreme environments. In this report, the experiments are performed by using Taguchi L18 technique and their results are used for performance of each process parameters on their output responses. The process parameters considered for experimentation are discharge current, pulse- on- time, type of electrode and pulse off time for the output responses of material removal rate and surface roughness. Eco-friendly (drinking water) is used as a dielectric fluid. The experiments are designed and conducted using Taguchi L18 technique and analyze the influence of each process parameters on machining performance characteristics. Further, mathematical equations were developed using the statistical software MINITAB17.0.ANOVA is used for analyzing the experimental results obtained. It was observed from the response table that the average values of MRR and SR for pulse on time, discharge current, electrode are identified as important process parameters.

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Surfactant and graphite powder–assisted electrical discharge machining of titanium alloy

Cited by 58 publications

References 33 publications

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

A Review of Additive Mixed-Electric Discharge Machining: Current Status and Future Perspectives for Surface Modification of Biomedical Implants

Performance Analysis on Eco-friendly Machining of Ti6Al4V using Powder Mixed with Different Dielectrics in WEDM

Parametric optimization of Edm on Hastelloy C-276 Using Taguchi L18 Technique

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