Carbon emissions, techno-economic and machinability assessments to achieve sustainability in drilling Ti6Al4V ELI for medical industry applications

Kashyap, Nikhil; Rashid, Rizwan Abdul Rahman; Khanna, Navneet

doi:10.1016/j.susmat.2022.e00458

Cited by 9 publications

(7 citation statements)

References 45 publications

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“…As per power grid system, Carbon emission factor of power consumption is taken average of 0.72 kg CO 2 /kWh [ 64 , 65 ]. The carbon emissions produced due to the power consumption while turning Nimonic 80 under different cooling/lubrication environments can be seen in Table 7 .…”

Section: Resultsmentioning

confidence: 99%

“…However, the production, use, and disposal of cutting fluid can contribute to carbon emissions. When assessing the total carbon footprint of a CNC machining system, it is crucial to include carbon emissions from cutting fluid [ 69 ]. To calculate carbon footprints from cutting fluid utilization, the carbon emission factor of that specific cutting fluid is to be multiplied by the quantity of fluid being used.…”

Section: Resultsmentioning

confidence: 99%

“…Thus, when calculating carbon emissions for the system, the focus lies on quantifying and accounting for the emissions produced while manufacturing the removed material. This can be accomplished by employing the following equation (11) [ 64 ]. The Carbon emission factor of workpiece material can be calculated using equation (12) .…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Assessing the cooling/lubricating agencies for sustainable alternatives during machining of Nimonic 80: Economic and environmental impacts

Makhesana,

Vesuwala,

Patel

et al. 2024

Heliyon

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

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Assessing the cooling/lubricating agencies for sustainable alternatives during machining of Nimonic 80: Economic and environmental impacts

Makhesana,

Vesuwala,

Patel

et al. 2024

Heliyon

Self Cite

View full text Add to dashboard Cite

“…A significant amount of carbon is being released into the atmosphere as a direct consequence of the materials used during the manufacturing process. This elevated carbon dioxide emission level is a notable environmental concern, contributing to the overall impact on the planet's carbon footprints [37,38]. In this study, the CO2 emissions from the work material, coolant, and diamond wire have been computed using Eq.…”

Section: Carbon Dioxide Emissionsmentioning

confidence: 99%

Assessment of Sustainable and Machinable Performance Metrics of Monocrystalline Silicon Carbide Wafer with Electrophoretic Assisted Multi-Diamond Wire Sawing

Sefene,

Chen,

Tsai

et al. 2024

Preprint

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The rapacious demand for energy in semiconductor wafer manufacturing industries has significant implications for global warming and wafer manufacturing costs. Assessing sustainability in the multi-diamond wire sawing (MDWS) process is crucial for reducing costs and mitigating environmental impacts. However, sustainability assessment integrated with machinability performance metrics in this process has not been investigated. This novel study extensively analyzes sustainability metrics such as processing time, energy consumption, carbon dioxide emission, machining cost, and machinability characteristics, including surface roughness, diamond wear rate, and sawing temperature in monocrystalline silicon carbide (mono-SiC) sawing process. Experiments were conducted using traditional MDWS (T-MDWS), reactive MDWS (R-MDWS), and electrophoretic-assisted reactive MDWS (ER-MDWS) coolants. An autoregressive integrated moving average (ARIMA) model were used to predict the overall energy consumption of the MDWS machine. Results showed significant improvements across various responses such as processing time, energy consumption, carbon dioxide emissions, machining cost, surface roughness, diamond wear rate, and sawing temperature, with reductions of 2.95%, 3.87%, 6.80%, 12.82%, 4.68%, 16.32%, and 4.39%, respectively. Furthermore, the ARIMA model results indicate that the total energy consumption prediction accuracy reaches 98.813%. The findings demonstrated that the ER-MDWS cooling strategy is well-suited for large-scale wafer production without compromising surface quality while minimizing environmental impact.

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“…However, a drastic increase in the thrust force and surface roughness was reported due to the increase in material hardness. Kashyap et al [25] considered electrostatic minimum quantity lubrication (EMQL) and cryogenic liquid carbon dioxide (LCO 2 ) for drilling Ti6Al4V. It was reported that LCO 2 helped to lower the carbon emissions and torque compared to the EMQL technique.…”

Section: Introductionmentioning

confidence: 99%

Machining Temperature, Surface Integrity and Burr Size Investigation during Coolant-Free Hole Milling in Ti6Al4V Titanium Alloy

et al. 2023

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Modern Aircraft structures use titanium alloys where the processing of holes becomes essential to assemble aerospace parts. Considering the limitations of drilling, the study evaluates the helical milling for hole processing in Ti6Al4V. The experimental evaluation was conducted by considering burr size, surface roughness, machining temperature, and microhardness under coolant-free conditions. The axial feed and cutting speed were varied at three levels, and nine experiments were conducted. The results exhibit a lower machining temperature during helical milling than during drilling. In addition, the helical milling helped to lower the surface roughness and size of the exit burrs. However, helical-milled holes showed higher subsurface microhardness than conventionally drilled holes. The process variables were influential on machining temperature magnitude. The highest recorded temperature of 234.7 °C was observed at 60 m/min of cutting speed and 0.6 mm/rev feed. However, the temperature rise did not affect the microhardness. Strain hardening associated with mechanical deformation was the primary mechanism driving the increase in microhardness. Helical-milled holes exhibited an excellent surface finish at lower axial feeds, while chatter due to tool deformation at higher feeds (0.6 mm/rev) diminished the surface finish. The surface roughness increased by 98% when the cutting speed increased to 60 m/min from 20 m/min, while a moderate increment of 28% was observed when the axial feed increased to 0.6 mm/rev from 0.2 mm/rev. Furthermore, the formation of relatively smaller burrs was noted due to significantly lower thrust load and temperature produced during helical milling.

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Carbon emissions, techno-economic and machinability assessments to achieve sustainability in drilling Ti6Al4V ELI for medical industry applications

Cited by 9 publications

References 45 publications

Assessing the cooling/lubricating agencies for sustainable alternatives during machining of Nimonic 80: Economic and environmental impacts

Assessing the cooling/lubricating agencies for sustainable alternatives during machining of Nimonic 80: Economic and environmental impacts

Assessment of Sustainable and Machinable Performance Metrics of Monocrystalline Silicon Carbide Wafer with Electrophoretic Assisted Multi-Diamond Wire Sawing

Machining Temperature, Surface Integrity and Burr Size Investigation during Coolant-Free Hole Milling in Ti6Al4V Titanium Alloy

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