Effect of Nano-Enhanced Lubricant in Minimum Quantity Lubrication Balling Milling

2011 ◽  
Vol 133 (3) ◽  
Author(s):  
Kyung-Hee Park ◽  
Brent Ewald ◽  
Patrick Y. Kwon
Keyword(s):  
Performance Improvement ◽  
High Speed ◽  
Flank Wear ◽  
Minimum Quantity Lubrication ◽  
Angle Measurement ◽  
Suspension Stability ◽  
Edge Chipping ◽  
Minimum Quantity ◽  
Machining Conditions ◽  
Oil Mist

Minimum quantity lubrication (MQL) has been used as an alternative solution for flood cooling as well as dry machining. However, the benefit of MQL is only realized in mild machining conditions as the heat generation during more aggressive machining conditions cannot be effectively eliminated by the small amount of oil mist being applied during MQL process. To extend the applicability of MQL to more aggressive machining conditions, we have developed a potential additive to MQL lubricant. After the preliminary wetting angle measurement of the various lubricants, one commercially available MQL vegetable oil was chosen, which is then mixed in a high-speed mixer with exfoliated nanographene particles. The resulting nanoenhanced MQL lubricant was evaluated for its tribological and machining behaviors together with the suspension stability of the mixture. Friction coefficients of new nanoenhanced MQL oil were also measured in terms of loads, speeds and lubricants. Finally, MQL-ball milling tests with nanographene enhanced lubricant were performed to show a remarkable performance improvement in reducing both central wear and flank wear as well as edge chipping at cutting edge.

Pulsating minimum quantity lubrication assisted high speed turning on bio-medical Ti-6Al-4V ELI Alloy: An experimental investigation

2020 ◽  
Vol 21 (6) ◽  
pp. 625
Author(s):  
Ramanuj Kumar ◽  
Ashok Kumar Sahoo
Keyword(s):  
Surface Roughness ◽  
High Speed ◽  
Flank Wear ◽  
Cutting Speed ◽  
Surface Profile ◽  
Minimum Quantity Lubrication ◽  
Amplitude Distribution ◽  
Surface Topology ◽  
Texture Surface ◽  
Minimum Quantity

Machining of bio-medical Ti-6Al-4V ELI grade is categorized in difficult to cut metal alloys due to its lower thermal conductivity and highly reactive in nature at elevated temperature. However, to improve the machinability of this alloy, controlling the temperature during cutting action is a challenging task. On this context, current work introduced a novel cooling strategy named as pulsating minimum quantity lubrication technique to investigate the surface roughness, surface texture (surface topology, surface profile, amplitude distribution curve, Bearing area curve, and Power spectrum), tool-work temperature, and flank wear in high-speed CNC turning of Ti-6Al-4V ELI Alloy. Feed is the leading influencing term towards surface roughness, pulse time contributing the highest impact towards tool-work temperature while flank wear is largely influenced by cutting speed. Abrasion, notch wear, adhesion and diffusion mode of wear is found.

Experimental observation of oil mist penetration ability in minimum quantity lubrication (MQL) spray

2020 ◽  
Vol 34 (8) ◽  
pp. 3217-3225
Author(s):  
Guangyuan Zhu ◽  
Songmei Yuan ◽  
Xiaoyao Kong ◽  
Chong Zhang ◽  
Bochuan Chen
Keyword(s):  
Experimental Observation ◽  
Minimum Quantity Lubrication ◽  
Minimum Quantity ◽  
Penetration Ability ◽  
Oil Mist

A Study on Machining and Environmental Characteristics of Micro-Drilling Process Using Nanofluid Minimum Quantity Lubrication

2011 ◽  
Author(s):  
Jung Soo Nam ◽  
Pil-Ho Lee ◽  
Sang Won Lee
Keyword(s):  
Experimental Studies ◽  
Minimum Quantity Lubrication ◽  
Compressed Air ◽  
Drilling Process ◽  
Environmental Characteristics ◽  
Minimum Quantity ◽  
System A ◽  
Micro Drilling ◽  
Nanofluid Minimum Quantity Lubrication ◽  
Oil Mist

This paper presents two basic experimental studies of a micro-drilling process with nanofluid minimum quantity lubrication (MQL) in terms of machining and environmental characteristics. By using a miniaturized desktop machine tool system, a series of micro drilling experiments were conducted in the cases of dry, compressed air and nanofluid MQL. The experimental results imply that nanofluid MQL significantly reduces the adhesion of chips when compared with the cases of dry and compressed air micro-drilling. As a result, it is observed that the magnitudes of average drilling torque and thrust force are decreased and the tool life of micro drills is extended in the case of nanofluid MQL micro-drilling process. In addition, the empirical study on environmental characteristics of MQL micro-drilling process is conducted by measuring MQL oil mist with the oil sampling method. The results show that remaining MQL oil mist is tiny enough not to have a detrimental effect on human health.

Experimental Evaluation on the Effect of the Position of the Nozzle in End Milling under Minimum Quantity Lubrication Condition

2012 ◽  
Vol 155-156 ◽  
pp. 42-46 ◽  
Author(s):  
Song Mei Yuan ◽  
Si Liu ◽  
Lu Tao Yan ◽  
Qing Chun Xiong
Keyword(s):  
Negative Impact ◽  
End Milling ◽  
Minimum Quantity Lubrication ◽  
Experimental Investigations ◽  
Promising Alternative ◽  
Minimum Quantity ◽  
Milling Tool ◽  
Nozzle Position ◽  
Lubrication Condition ◽  
Oil Mist

Stricter environmental regulations are making the use of an ample amount of conventional coolant impossible because of its negative impact on the environment. Consequently, the use of minimum quantity lubrication (MQL) has been regarded as an promising alternative to conventional fluid coolant applications. Despite several studies, there have been a few investigations about the influence of the MQL nozzle position, such as distance from tool-workpiece contact zone, elevation angles, the included angle between jet direction and feed direction. The current study presents experimental investigations on influences of the above parameters on performance in end milling. Tool wear and surface roughness are experimentally studied to compare the effects of different positions. The results show that the setting location of the nozzle is an important factor regarding the effective application of MQL oil mist.

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