Processing of titanium-based human implant material using wire EDM

Kumar, S. Suresh; Khan, M. Adam; Muralidharan, B.

doi:10.1080/10426914.2019.1566609

Cited by 35 publications

(14 citation statements)

References 23 publications

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“…The study revealed that workpiece could be machined with higher efficiency due to continuous machining. Kumar et al [32] machined titanium for biomedical application and found Ton and voltage most significant parameters on surface roughness. Ying et al [33] revealed that RLT increased with the increase in Ip while machining with diamond abrasives.…”

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confidence: 99%

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

et al. 2020

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Surface modification is given vital importance in the biomedical industry to cope with surface tissue growth problems. Conventionally, basic surface treatment methods are used which include physical and chemical deposition. The major drawbacks associated with these methods are excessive cost and poor adhesion of coating with implant material. To generate a bioactive surface on an implant, electric discharge machining (EDM) is a promising and emerging technology which simultaneously serves as machining and surface modification technique. Besides the surface topology, implant material plays a very important role in surgical applications. From various implant materials, titanium (Ti6Al4V ELI) alloy is the best choice for long-term hard body tissue replacement due to its superior engineering, excellent biocompatibility and antibacterial properties. In this research, EDM’s surface characteristics are explored using Si powder mixed in dielectric on Ti6Al4V ELI. The effect of powder concentration (5 g/L, 10 g/L and 20 g/L) along with pulse current and pulse on time is investigated on micro and nanoscale surface topography. Optimized process parameters having a 5 g/L powder concentration result in 2.76 μm surface roughness and 13.80 μm recast layer thickness. Furthermore, a nano-structured (50–200 nm) biocompatible surface is fabricated on the surface for better cell attachment and growth. A highly favourable carbon enriched surface is confirmed through EDS which increases adhesion and proliferation of human osteoblasts.

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confidence: 99%

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

et al. 2020

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“…In this procedure, a metallic wire acts as tool electrode in EDM procedure that is comparable to outline cutting using a band saw. The wire electrode moves through computer assisted numerical control to attain three dimensional forms (Kumar, Khan and Muralidharan, 2019;.…”

Section: Wire-electrical Discharge Machining (Wedm)mentioning

confidence: 99%

Methods and variables in Electrical discharge machining of titanium alloy – A review

Pramanik

Basak

Littlefair

et al. 2020

Heliyon

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“…There has been an increase in overcutting and cutting rate with an increase in Ip and Ton [21]. Whereas scanning electron microscopy (SEM) shows that voltage has a significant contribution in material removal of metals [22]. Some studies have also taken generated residual stress under consideration while machining.…”

Section: Introductionmentioning

confidence: 99%

An Investigation on Surfactant Added PMWEDM of Inconel 718

Ranjan

Chakraborty

Kumar

et al. 2020

IJAME

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This paper shows the impact of different process parameters and powder characteristics on the material removal rate and surface roughness obtained in surfactant added Powder Mixed Wire Electric Discharge Machining (PMWEDM). Inconel-718 is selected as the workpiece material, which has ample application in the industries handling environment of extreme stress, pressure and temperature. It has high work hardening properties along with high rupture strength, fatigue, and creep, making it extremely difficult to machine. So, additives having different thermo-physical properties are studied to improve the machining efficiency. The additives experimented includes aluminium, silicon carbide, graphite, and aluminium oxide. It is found that the electrostatic force present creates an agglomeration effect with dielectric additive powders, causing inhomogeneity in the mixture. So, a surfactant SPAN20 is used here to maintain the homogeneity of the mixture. The obtained MRR and SR are then modelled and optimised through Particle Swarm Optimization technique (PSO). It is observed that the addition of SPAN20 has improved the MRR by 13.56% and, SR by 45.05%. Also, it has been found that due to the combined abrasive action, abrasive powders increase MRR significantly than others. Furthermore, it is found that low grit size powders with lower density produces better machined surfaces.

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Processing of titanium-based human implant material using wire EDM

Cited by 35 publications

References 23 publications

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

On the Investigation of Surface Integrity of Ti6Al4V ELI Using Si-Mixed Electric Discharge Machining

Methods and variables in Electrical discharge machining of titanium alloy – A review

An Investigation on Surfactant Added PMWEDM of Inconel 718

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