Comparative performance evaluation of TiO2, and MWCNTs nano-lubricant effects on surface roughness of AA8112 alloy during end-milling machining for sustainable manufacturing process

Abstract

Aluminium 8112 alloy has become a leading material in the aluminium family and currently used in the aerospace and automobile industries due to its excellent chemical and mechanical properties. However, during machining of aluminium alloy, one of the challenges faced by the manufacturing industry is the material adhesion, which increases the rate of chips discontinuity at the machining region and leads to a high surface roughness of the workpiece. The focus of this research is to proffer solutions to this material adhesion by implementing vegetable oil that is copra oil-lubricant, titanium dioxide (TiO 2 ) and multi-walled carbon nanotube (MWCNTs) nano-lubricants during endmilling of AA8112 alloy. Also, using quadratic rotatable central composite design (QRCCD) to study the effects of the machining parameters under minimum quantity lubrication condition, this research used the two-step method to synthesise the nano-lubricants and carried out the homogenisation using the magnetic stirrer and ultrasonic cleaner machine. The study considered five machining factors, including spindle speed, feed rate, length of cut, depth of cut and helix angle. The result from the surface roughness shows that the TiO 2 nano-lubricant reduces the surface roughness with 10% and 17% when compared with the MWCNTs nano-lubricant and copra oil. The minimum surface roughness of 1.15 μm, 1.16 μm and 1.35 μm, for the three machining environments, was achieved, respectively. Spindle speed is the most influential machining parameter, followed by the feed rate. The result of this study will aid the manufacturing industry to produce an excellent quality product for a cleaner manufacturing system. This is a preview of subscription content, access via your institution. Article Google Scholar 2.Okokpujie IP, Bolu CA, Ohunakin OS, Akinlabi ET, Adelekan DS (2019) A review of recent application of machining techniques, based on the phenomena of CNC machining operations. Procedia Manuf 35:1054-1060 3. 3.

A study on bi-objective optimization for end milling of Aluminium based composite

“…The elevated FR normally produce vibrations between the composite material and cutting tool. This causes an increase in intensity of surface roughness for the duration of cutting operation [29]. Likewise, expanding the FR results a rise in the machined sign owing to more contact area creation that leads to additional forces and consequently Ra parameter emerges considerably [30].…”

Experimental Study and Finite Element Analysis of Temperature Reduction and Distribution During Machining of Al-Si-Mg Composite Using Deform 3D

“…The time taken to turn the composite material when using mineral oil compared to when using MWCNT nano lubricant was reduced. This is due to the flow rate of the two lubricants employed for the experiment; when the MWCNT nanoparticles were added to the mineral oil, it increased the tribological properties and the viscosity of the fluid flow [25]. This increase in viscosity affects the cut time by increasing it compared with the mineral oil.…”

Surface roughness of machined wood and advanced engineering materials and its prediction: A review

“…They reported that the TiO 2 nano-lubricant resulted in lower surface roughness compared to the copra oil and MWCNT nano-lubricant. 62…”

“…They reported that the TiO 2 nano-lubricant resulted in lower surface roughness compared to the copra oil and MWCNT nanolubricant. 62 The demands for cleaner manufacturing motivate manufacturers to benefit from low carbon footprint on the environment and high machinability. Because of the outstanding heat transfer ability, nano-lubricants have great acceptability for eco-friendly and sustainable machining of superalloys.…”