Feasibility Analysis of Powder-Mixed Deionized Water as Dielectric for Machining Ti6Al4V

Joshi, Ayanesh Y.; Joshi, Anant

doi:10.1007/s40032-020-00639-7

Cited by 6 publications

(3 citation statements)

References 22 publications

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“…The modification on a PM-EDMed surface can be evidenced in the form of a noticeably thick recast layer exhibiting upgraded surface properties such as improved surface integrity, micro-cracks, corrosion resistance, wear resistance, and biocompatibility [ 214 , 215 ]. In the case of PM-EDM of Ti and Ti alloys, B 4 C [ 216 ], surfactant, graphite, TiO 2 [ 217 , 218 ], SiC, Al 2 O 3 [ 219 – 222 ], Si [ 223 ], and carbon nanotubes (CNTs) [ 224 ] powder particles were primarily used. For instance, with variation in the powder characteristics (particle sizes and concentrations) of SiC and Al 2 O 3 powders and dielectric mediums (such as EDM oil, deionized water, and tap water), considerable changes in the surface roughness (SR), recast layer thickness (RLT), material subtraction/removal rate (MRR), and tool wear rate (TWR) were witnessed [ 225 – 227 ].…”

Section: Surface Modification Of Metallic Implant Biomaterialsmentioning

confidence: 99%

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

Davis

Singh

Jackson

et al. 2022

Int J Adv Manuf Technol

141

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There is a tremendous increase in the demand for converting biomaterials into high-quality industrially manufactured human body parts, also known as medical implants. Drug delivery systems, bone plates, screws, cranial, and dental devices are the popular examples of these implants - the potential alternatives for human life survival. However, the processing techniques of an engineered implant largely determine its preciseness, surface characteristics, and interactive ability with the adjacent tissue(s) in a particular biological environment. Moreover, the high cost-effective manufacturing of an implant under tight tolerances remains a challenge. In this regard, several subtractive or additive manufacturing techniques are employed to manufacture patient-specific implants, depending primarily on the required biocompatibility, bioactivity, surface integrity, and fatigue strength. The present paper reviews numerous non-degradable and degradable metallic implant biomaterials such as stainless steel (SS), titanium (Ti)-based, cobalt (Co)-based, nickel-titanium (NiTi), and magnesium (Mg)-based alloys, followed by their processing via traditional turning, drilling, and milling including the high-speed multi-axis CNC machining, and non-traditional abrasive water jet machining (AWJM), laser beam machining (LBM), ultrasonic machining (USM), and electric discharge machining (EDM) types of subtractive manufacturing techniques. However, the review further funnels down its primary focus on Mg, NiTi, and Ti-based alloys on the basis of the increasing trend of their implant applications in the last decade due to some of their outstanding properties. In the recent years, the incorporation of cryogenic coolant-assisted traditional subtraction of biomaterials has gained researchers’ attention due to its sustainability, environment-friendly nature, performance, and superior biocompatible and functional outcomes fitting for medical applications. However, some of the latest studies reported that the medical implant manufacturing requirements could be more remarkably met using the non-traditional subtractive manufacturing approaches. Altogether, cryogenic machining among the traditional routes and EDM among the non-traditional means along with their variants, were identified as some of the most effective subtractive manufacturing techniques for achieving the dimensionally accurate and biocompatible metallic medical implants with significantly modified surfaces.

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Section: Surface Modification Of Metallic Implant Biomaterialsmentioning

confidence: 99%

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

Davis

Singh

Jackson

et al. 2022

Int J Adv Manuf Technol

141

View full text Add to dashboard Cite

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“…Naik et al [13] conducted experiments on the EDM of Aluminum metal matrix composites and found discharge current significantly improved the surface polish. Joshi et al [14] investigated and found that deionized water combined with abrasive powder was good medium for EDM machining of titanium alloys that are difficult to cut. Any electrically conductive material of a specific hardness may be machined using the thermoelectric EDM method.…”

Section: Literature Reviewmentioning

confidence: 99%

Experimental Study on Effect of Process Characteristics during Electronic Discharge Machining of Titanium Alloy Using Multi Hole Tool Electrode

Niranjan

Singaravel

Raju

et al. 2023

AMR

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Due to outstanding material qualities such as higher strength to weight ratio, resistance to corrosion and resistance to fatigue, titanium alloys (Ti-6Al-4V) are widely applied in aerospace industries. Such a challenging to machine and necessary expensive convenctional machinery materials can cut using Electrical Discharge Machining (EDM). This work involves the study of influence of process characteristics on the performance quality of EDM during machining of Ti-6Al-4V. The process characteristics that are considered in this study are Current (9-15amps) or Input power (I.P. of 3-5 kVA), pulse on (60-80 μsec) and pulse off (20-40μsec) times, the pressure of dielectric fluid (6-10 MPa). The effectiveness of the EDM is measured using rate of tool wear (TWR) and rate of material removal (MRR) during machining, taper angle and surface roughness (SR). Dry brass multi hole tool electrode is used along with deionized water as the dielectric medium. Taguchi L18 orthogonal design is used for experimentation. The optimal combination of process characteristics is determined.

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“…The results showed the current and pulse on time have a significant effect on MRR, TWR, and SR. In addition, the change of pulse off time and powder concentration improved the SR. 14 The deionized water improves the machining environment in contrast to kerosene. 15 In addition, no carbon deposition occurs on the machined surface and no environmental damage is observed.…”

Section: Introductionmentioning

confidence: 99%

Effects of hybrid Al₂O₃- SiO₂ nanoparticles in deionized water on the removal rate and surface roughness during electrical discharge machining of Ti-6Al-4V

Oskueyan

Abedini

Hajialimohammadi

2021

Proceedings of the Institution of Mechanical Engineers, Part E:

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Nowadays, special attention is paid to the application of nanoparticles to improve the performance of Electrical Discharge Machining (EDM). In this paper, modeling and optimizing the process parameters of Nanopowder Mixed Electrical Discharge Machining (NPMEDM) is studied. In this study, the effect of aluminum oxide (Al2O3) and silicon oxide (SiO2) nanoparticles on the deionized water dielectric is investigated simultaneously in the process of electrical discharge machining of Ti-6Al-4V alloy. After analyzing the parameters, the discharge current, concentration, pulse on time, and relative composition are considered as input factors. Response Surface Methodology (RSM) using Design-Expert software is employed for the design of the experiments, analysis of the results, and optimization of the parameters. The results show that the best surface morphology is obtained by machining with the addition of nanoparticles in the relative composition of 50%. In this percentage of the composition, the surface of the workpiece has the least value of crack and recast layer. In addition, the maximum value of the material removal rate (MRR) and minimum value of tool wear rate (TWR) can be achieved in the discharge current of 12 A, pulse on-time of 100 μs, and relative composition of 75% Al2O3 – 25% SiO2.

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Feasibility Analysis of Powder-Mixed Deionized Water as Dielectric for Machining Ti6Al4V

Cited by 6 publications

References 22 publications

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

Experimental Study on Effect of Process Characteristics during Electronic Discharge Machining of Titanium Alloy Using Multi Hole Tool Electrode

Effects of hybrid Al₂O₃- SiO₂ nanoparticles in deionized water on the removal rate and surface roughness during electrical discharge machining of Ti-6Al-4V

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Feasibility Analysis of Powder-Mixed Deionized Water as Dielectric for Machining Ti6Al4V

Cited by 6 publications

References 22 publications

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

A comprehensive review on metallic implant biomaterials and their subtractive manufacturing

Experimental Study on Effect of Process Characteristics during Electronic Discharge Machining of Titanium Alloy Using Multi Hole Tool Electrode

Effects of hybrid Al2O3- SiO2 nanoparticles in deionized water on the removal rate and surface roughness during electrical discharge machining of Ti-6Al-4V

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Effects of hybrid Al₂O₃- SiO₂ nanoparticles in deionized water on the removal rate and surface roughness during electrical discharge machining of Ti-6Al-4V