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Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process

Minimum Quantity Lubrication (MQL) technology has drawn attention as an effective lubrication technique despite its small usage of lubricants during the machining process. The technology has undeniably minimized the manufacturing cost as well as the adverse impacts towards the environment and health...

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Main Authors: Nurrina, Rosli, Nur Izzati Khoirunnisa, Ismail, Amiril Sahab, Abdul Sani, Afifah Nailah, Muhamad
Format: Article
Language:English
Published: J-Global 2023
Subjects:
TJ Mechanical engineering and machinery
TS Manufactures
Online Access:http://umpir.ump.edu.my/id/eprint/39327/1/Investigation%20of%20Lubricant%20Oil%20Film%20Thickness%20on%20Workpiece%20under%20Minimum%20Quantity%20Lubrication%20Milling%20Process.pdf
http://umpir.ump.edu.my/id/eprint/39327/
https://doi.org/10.2474/trol.18.365
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spelling my.ump.umpir.393272023-11-16T04:20:53Z http://umpir.ump.edu.my/id/eprint/39327/ Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process Nurrina, Rosli Nur Izzati Khoirunnisa, Ismail Amiril Sahab, Abdul Sani Afifah Nailah, Muhamad TJ Mechanical engineering and machinery TS Manufactures Minimum Quantity Lubrication (MQL) technology has drawn attention as an effective lubrication technique despite its small usage of lubricants during the machining process. The technology has undeniably minimized the manufacturing cost as well as the adverse impacts towards the environment and health of operators. However, the ability of the small droplets of lubricant oil to penetrate the cutting zone must be investigated to enhance the machining performance. The penetration ability can be predicted if the amount of lubricant oil adhered to the workpiece is known. Nonetheless, observing the lubricant behavior is commonly challenged by the existing tools during the machining process. Therefore, a non-intrusive technique must be applied to conscientiously observe the lubricant behavior. In this paper, the thickness of lubricant oil resulted by the droplets accumulation on the workpiece during MQL milling process was measured using a Laser-Induced Fluorescence technique to predict the lubricating effects of the lubricant. The surface roughness of workpiece was also measured to investigate how the thickness of lubricant oil affects the machining performance. Experiments were conducted for MQL milling process of aluminium alloy 6061 under constant value of cutting speed and increasing value of lubricant flow rates. The MQL nozzle was tilted 45°, directed perpendicular to the milling direction and fixed together with the cutting tool to let them move together throughout the milling path. Results analysis was performed on the sample whose cutting tool was halfway to the milling path. As a result, the average lubricant oil film thickness was found to increase and obviously fluctuate with increasing flow rates, ranging from 0.2 mm to 0.7 mm. A careful observation of the lubricant oil thickness near the location of cutting tool also suggested that the droplets of lubricant oil probably struggle to penetrate the cutting zone due to the sudden falls at those locations. Furthermore, the correlation between the thickness of lubricant oil film to the performance of milling process under the MQL spraying condition was successfully made since the results trending of the surface roughness of workpiece shows a well agreement with the trending of lubricant oil film thickness. J-Global 2023 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/39327/1/Investigation%20of%20Lubricant%20Oil%20Film%20Thickness%20on%20Workpiece%20under%20Minimum%20Quantity%20Lubrication%20Milling%20Process.pdf Nurrina, Rosli and Nur Izzati Khoirunnisa, Ismail and Amiril Sahab, Abdul Sani and Afifah Nailah, Muhamad (2023) Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process. Tribology Online, 18 (6). pp. 365-372. ISSN 1881-218X(Printed) 1881-2198 (Online). (Published) https://doi.org/10.2474/trol.18.365 10.2474/trol.18.365
institution Universiti Malaysia Pahang Al-Sultan Abdullah
building UMPSA Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Pahang Al-Sultan Abdullah
content_source UMPSA Institutional Repository
url_provider http://umpir.ump.edu.my/
language English
topic TJ Mechanical engineering and machinery
TS Manufactures
spellingShingle TJ Mechanical engineering and machinery
TS Manufactures
Nurrina, Rosli
Nur Izzati Khoirunnisa, Ismail
Amiril Sahab, Abdul Sani
Afifah Nailah, Muhamad
Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process
description Minimum Quantity Lubrication (MQL) technology has drawn attention as an effective lubrication technique despite its small usage of lubricants during the machining process. The technology has undeniably minimized the manufacturing cost as well as the adverse impacts towards the environment and health of operators. However, the ability of the small droplets of lubricant oil to penetrate the cutting zone must be investigated to enhance the machining performance. The penetration ability can be predicted if the amount of lubricant oil adhered to the workpiece is known. Nonetheless, observing the lubricant behavior is commonly challenged by the existing tools during the machining process. Therefore, a non-intrusive technique must be applied to conscientiously observe the lubricant behavior. In this paper, the thickness of lubricant oil resulted by the droplets accumulation on the workpiece during MQL milling process was measured using a Laser-Induced Fluorescence technique to predict the lubricating effects of the lubricant. The surface roughness of workpiece was also measured to investigate how the thickness of lubricant oil affects the machining performance. Experiments were conducted for MQL milling process of aluminium alloy 6061 under constant value of cutting speed and increasing value of lubricant flow rates. The MQL nozzle was tilted 45°, directed perpendicular to the milling direction and fixed together with the cutting tool to let them move together throughout the milling path. Results analysis was performed on the sample whose cutting tool was halfway to the milling path. As a result, the average lubricant oil film thickness was found to increase and obviously fluctuate with increasing flow rates, ranging from 0.2 mm to 0.7 mm. A careful observation of the lubricant oil thickness near the location of cutting tool also suggested that the droplets of lubricant oil probably struggle to penetrate the cutting zone due to the sudden falls at those locations. Furthermore, the correlation between the thickness of lubricant oil film to the performance of milling process under the MQL spraying condition was successfully made since the results trending of the surface roughness of workpiece shows a well agreement with the trending of lubricant oil film thickness.
format Article
author Nurrina, Rosli
Nur Izzati Khoirunnisa, Ismail
Amiril Sahab, Abdul Sani
Afifah Nailah, Muhamad
author_facet Nurrina, Rosli
Nur Izzati Khoirunnisa, Ismail
Amiril Sahab, Abdul Sani
Afifah Nailah, Muhamad
author_sort Nurrina, Rosli
title Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process
title_short Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process
title_full Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process
title_fullStr Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process
title_full_unstemmed Investigation of Lubricant Oil Film Thickness on Workpiece under Minimum Quantity Lubrication Milling Process
title_sort investigation of lubricant oil film thickness on workpiece under minimum quantity lubrication milling process
publisher J-Global
publishDate 2023
url http://umpir.ump.edu.my/id/eprint/39327/1/Investigation%20of%20Lubricant%20Oil%20Film%20Thickness%20on%20Workpiece%20under%20Minimum%20Quantity%20Lubrication%20Milling%20Process.pdf
http://umpir.ump.edu.my/id/eprint/39327/
https://doi.org/10.2474/trol.18.365
_version_ 1822923857924718592
score 13.232414

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