MQL Machining with nano fluid: a review

Abstract

In any metal cutting machining operation, the cutting fluid plays important role by cooling the cutting tool and the surface of the work piece, also chips are removed from heat affected zone. However, misuse of the cutting fluid and wrong methods of its disposal can affect human health and the environment badly. This paper presents a review of the important research papers published regarding the MQL-based application of mineral oils, vegetable oils and nano fluid-based cutting fluids for different machining processes, such as, drilling, turning, milling and grinding, etc. Most of the experimental studies have shown that application of MQL produces surface better than the flood and dry machining. In turning operation, parameters such as cutting speed, depth of cut, feed rate and tool nose radius have great impact on the surface finish. During high speed turning of steel inherently generates high cutting zone temperature. Such high temperature causes dimensional deviation and failure of cutting tools, surface and subsurface micro cracks, corrosion etc. Therefore, with proper selection of the MQL system and the cutting parameters, it is possible for MQL machining with minimum cost and less quantity of coolant to obtain better conditions, in terms of lubricity, tool life, cutting temperature and surface finish. The findings of this study show that MQL with nano fluid can substitute the flood lubrication for better surface finish.

Avaliação da rugosidade superficial no fresamento frontal do ferro fundido nodular austemperado (ADI)

“…Considerando a profundidade de corte, a utilização do fluido lubri-refrigerante também não exerceu influência significativa nos resultados de Ra quando a profundidade de corte (ap) foi variada. Estes resultados foram opostos aos resultados de Patole et al (2021), onde somente o aumento da profundidade de corte afetaram drasticamente a qualidade das superfícies usinadas.…”

Machining Grade 4 Titanium alloy by Minimum Quantity Lubrication (MQL) for enhanced environmentally sustainable manufacturing.

“…A number of strategies are being investigated in an attempt to reduce the application of cutting uids. These include solid lubrication, high-pressure coolant, gas/vapour cooling, liquid nitrogen cooling, and nano uid-based machining [13]. MQL implies near dry machining and/or a minimal usage of lubricants.…”

Parameter optimization of the MQL nozzle by the computational fluid dynamics

“…On the one hand, the purpose of lubrication, cooling, and chip removal is achieved, which can prolong the tool life and improve the machining quality; on the other hand, it causes great damage to the natural environment, poses a threat to the health of machine tool operators [1][2][3] and results in high cost and consumption [4][5][6]. In recent years, minimum quantity lubrication (MQL) cutting technology has achieved good machining results [7,8]. Çamlı, et al [9] focused on the influence of MQL in the machining of steel parts for rail wheels, results showed that the MQL can reduce the surface roughness and tool wear.…”