GRGURAŠ, Damir ;STERLE, Luka ;MALNERŠIČ, Aleš ;KASTELIC, Luka ;COURBON, Cedric ;PUŠAVEC, Franci . Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining. Strojniški vestnik - Journal of Mechanical Engineering, [S.l.], v. 67, n.1-2, p. 3-10, february 2021. ISSN 0039-2480. Available at: <https://www.sv-jme.eu/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/>. Date accessed: 22 dec. 2024. doi:http://dx.doi.org/10.5545/sv-jme.2020.7076.
Grguraš, D., Sterle, L., Malneršič, A., Kastelic, L., Courbon, C., & Pušavec, F. (2021). Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining. Strojniški vestnik - Journal of Mechanical Engineering, 67(1-2), 3-10. doi:http://dx.doi.org/10.5545/sv-jme.2020.7076
@article{sv-jmesv-jme.2020.7076,
author = {Damir Grguraš and Luka Sterle and Aleš Malneršič and Luka Kastelic and Cedric Courbon and Franci Pušavec},
title = {Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining},
journal = {Strojniški vestnik - Journal of Mechanical Engineering},
volume = {67},
number = {1-2},
year = {2021},
keywords = {flow analysis; flow velocity; droplet size; single-channel supply; liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining},
abstract = {Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL.},
issn = {0039-2480}, pages = {3-10}, doi = {10.5545/sv-jme.2020.7076},
url = {https://www.sv-jme.eu/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/}
}
Grguraš, D.,Sterle, L.,Malneršič, A.,Kastelic, L.,Courbon, C.,Pušavec, F. 2021 February 67. Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining. Strojniški vestnik - Journal of Mechanical Engineering. [Online] 67:1-2
%A Grguraš, Damir %A Sterle, Luka %A Malneršič, Aleš %A Kastelic, Luka %A Courbon, Cedric %A Pušavec, Franci %D 2021 %T Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining %B 2021 %9 flow analysis; flow velocity; droplet size; single-channel supply; liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining %! Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining %K flow analysis; flow velocity; droplet size; single-channel supply; liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining %X Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL. %U https://www.sv-jme.eu/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/ %0 Journal Article %R 10.5545/sv-jme.2020.7076 %& 3 %P 8 %J Strojniški vestnik - Journal of Mechanical Engineering %V 67 %N 1-2 %@ 0039-2480 %8 2021-02-26 %7 2021-02-26
Grguraš, Damir, Luka Sterle, Aleš Malneršič, Luka Kastelic, Cedric Courbon, & Franci Pušavec. "Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining." Strojniški vestnik - Journal of Mechanical Engineering [Online], 67.1-2 (2021): 3-10. Web. 22 Dec. 2024
TY - JOUR AU - Grguraš, Damir AU - Sterle, Luka AU - Malneršič, Aleš AU - Kastelic, Luka AU - Courbon, Cedric AU - Pušavec, Franci PY - 2021 TI - Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining JF - Strojniški vestnik - Journal of Mechanical Engineering DO - 10.5545/sv-jme.2020.7076 KW - flow analysis; flow velocity; droplet size; single-channel supply; liquid carbon dioxide – LCO2; minimum quantity lubrication – MQL; LCO2 assisted machining N2 - Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL. UR - https://www.sv-jme.eu/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/
@article{{sv-jme}{sv-jme.2020.7076},
author = {Grguraš, D., Sterle, L., Malneršič, A., Kastelic, L., Courbon, C., Pušavec, F.},
title = {Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining},
journal = {Strojniški vestnik - Journal of Mechanical Engineering},
volume = {67},
number = {1-2},
year = {2021},
doi = {10.5545/sv-jme.2020.7076},
url = {https://www.sv-jme.eu/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/}
}
TY - JOUR AU - Grguraš, Damir AU - Sterle, Luka AU - Malneršič, Aleš AU - Kastelic, Luka AU - Courbon, Cedric AU - Pušavec, Franci PY - 2021/02/26 TI - Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining JF - Strojniški vestnik - Journal of Mechanical Engineering; Vol 67, No 1-2 (2021): Strojniški vestnik - Journal of Mechanical Engineering DO - 10.5545/sv-jme.2020.7076 KW - flow analysis, flow velocity, droplet size, single-channel supply, liquid carbon dioxide – LCO2, minimum quantity lubrication – MQL, LCO2 assisted machining N2 - Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL. UR - https://www.sv-jme.eu/article/media-flow-analysis-of-single-channel-pre-mixed-liquid-co2-and-mql-in-sustainable-machining/
Grguraš, Damir, Sterle, Luka, Malneršič, Aleš, Kastelic, Luka, Courbon, Cedric, AND Pušavec, Franci. "Media Flow Analysis of Single-Channel Pre-Mixed Liquid CO2 and MQL in Sustainable Machining" Strojniški vestnik - Journal of Mechanical Engineering [Online], Volume 67 Number 1-2 (26 February 2021)
Strojniški vestnik - Journal of Mechanical Engineering 67(2021)1-2, 3-10
© The Authors, CC-BY 4.0 Int. Change in copyright policy from 2022, Jan 1st.
Single-channel supply of pre-mixed liquid carbon dioxide (LCO2) and minimum quantity lubrication (MQL) represents a state-of-the-art LCO2 assisted machining. However, to fully understand and optimize cooling and lubrication provided by the LCO2 + MQL, a fundamental media flow analysis is essential, yet not researched enough. Therefore, in this paper, media flow velocity and oil droplet size were analysed in supplying line and at the nozzle outlet using high-speed camera and proprietary single-channel system. Results indicate that pre-mixed media flow velocity is mainly influenced by the LCO2 expansion rate upon the nozzle outlet, wherein oil droplet size is largely dependent on the solubility between oil and LCO2. Media flow velocity increases significantly from an average of 40 m/s in the supplying line to the excess of 90 m/s at the nozzle outlet due to the pressure drop and LCO2 expansion. Furthermore, this volume expansion causes the oil droplet to increase to the point of critical, unstable droplet size. Afterward, the unstable oil droplet breaks up into smaller oil droplets. It was found, that nonpolar oil, with greater solubility in LCO2, compared to the polar oil, provides droplets as small as 2 μm in diameter. Smaller oil droplets positively reflect on tool wear and tool life in LCO2 assisted machining, as the longest tool life was achieved by using the nonpolar oil for pre-mixed LCO2 + MQL.