Material Removal Rate in Electric Discharge Machining with Aluminum Tool Electrode for Ti-6Al-4V Titanium Alloy

Self Cite

In the present scenario, great effort is expended to improve the machining process by adopting multi-criteria decision making in electrical discharge machining (EDM). In this research article, an attempt was made to optimize the process parameters of EDM with Nickel Coated Aluminium Electrode for machining Titanium Alloy using Preference Selection Index (PSI). The experimental work were performed using Taguchi based L16 orthogonal to solve multi-objective optimization problem. The current (I), voltage (U) and pulse on time (Ton) were used as input response variables for investigation process while material removal rate (MRR) and tool wear rate (TWR) were selected as performance measures. The experimental results show that set of optimized parameters of the multi-objective optimization problem in EDM with nickel coated aluminium electrode could improve the machining with better surface measures with less deviation from the prediction. The combination between PSI and Taguchi method reduced and saved significantly the experimental time and cost and increased accuracy for optimization process.

Section: Introductionmentioning

confidence: 99%

Multi-criteria decision making in electrical discharge machining with nickel coated aluminium electrode for titanium alloy using preferential selection index

Huu

Vu²,

Shirguppikar³

et al. 2022

Self Cite

“…Chen [1] investigated the microstructure and biomechanical properties of the binary Ti-Mo alloys with molybdenum contents ranging from 5% to 20% (mass fraction) and reported that the Ti with 10% Mo (Ti10Mo) was the most ideal for biomedical applications. Other researchers also investigated the suitability of the Ti-Mo binary system for biomedical applications with 10 wt.% Mo and reported low elastic moduli (23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), no cytotoxicity and preferential properties for biomedical applications as compared to Ti6Al4V [13][14][15]. Despite these confirmations of low elasticity, non-toxicity, preferential biomechanical and biochemical properties of the Ti-Mo alloy, the processing of the Ti10Mo alloy via the conventional methods (casting, forging, sheet forming, extrusion, etc.)…”

Section: Introductionmentioning

confidence: 99%

“…Other researchers touted the capacity of other advanced manufacturing technologies, such as the electrical discharge machining (EDM) method, which is a nonconventional process normally used to machine hard materials into intricate shapes [28,29]. The EDM technology could certainly be used to produce Ti-based alloy components with intricate shapes for biomedical applications [30].…”

Section: Introductionmentioning

confidence: 99%

In situ alloying of Ti10Mo fused tracks and layers via laser powder bed fusion

Dzogbewu

Preez

2022

Optimum process parameters for manufacturing a Ti10Mo alloy for biomedical applications via the laser powder bed fusion (LPBF) process were determined. Fused tracks were produced over a wide range of laser powers and scanning speeds, and layers were fused at varied hatch distances. The samples were analysed for continuity of the fused tracks, melting and distribution of the Mo powder particles in the Ti10Mo alloy layers, surface roughness, homogeneity of Mo in the alloy matrix and microhardness. The analysis revealed that the Mo powder particles melted completely in the alloy matrix with only pockets of Mo concentrations, mostly at the peripheries of the fused tracks due to the pushing effect. Complete melting of Mo in the Ti10Mo alloy matrix was due to the small size (1 μm) of the Mo powder particles used in the current experiment. The addition of Mo enhanced the wetting of the powder bed and prevented a pronounced balling effect. From this study, the parameter sets 150 W, 0.5 m/s and 200 W, 1.0 m/s both at a hatch distance of 80 μm, were obtained as the optimum process parameters. However, the Mo concentrations at the peripheries of the molten pool indicated that further research was required before a ‘completely’ homogenous sample could be manufactured via the LPBF process using elemental powder blends.

“…Several technical solutions have been introduced to achieve these goals, but the technical complexity of use and application costs are high and this has affected their application in practice [3][4][5]. Currently, research on optimizing technological parameters in micro-EDM and micro-EDM using coated electrodes is a promising research path with high potential [6][7][8]. Currently, micro-EDM using coated electrode is a technical solution that is of great interest.…”

Section: Introductionmentioning

confidence: 99%

Multi-objects optimization in μ-EDM using AlCrN coated tungsten carbide electrode by Deng's method

Van

Shirguppikar²,

Huu

et al. 2022

Self Cite

In machining, the use of appropriate optimization method will significantly contribute in improving the economic and technical efficiency. Currently, there are many techniques used for multi-objective decisions in electrical discharge machining (EDM) and micro-EDM. This may create mistakes in choosing the optimal solution for each problem and mislead the optimum solution. Therefore, it is necessary to have research directions to be able to come up with a reasonable optimal method. In this study, the author has studied multi-targeting decisions in micro-EDM using coated electrode. Experiments were performed using Ti-6Al-4V as a workpiece material and AlCrN coated Tungsten carbide (WC) micro tool electrode. Deng's method was used to decide the optimized level of depth of machining (Z Co-Ordinate) and overcut (OC) in micro-EDM using the coated electrode. Research results are analyzed and evaluated with several other multi-objective decision methods. The results indicated that Deng's method was the suitable method for this study and the machined surface quality of the coated electrode was also analyzed.