A comprehensive assessment of minimum quantity lubrication machining from quality, production, and sustainability perspectives

Abstract

The article presents minimum quantity lubrication (MQL) machining of Ti-6Al-4V in a collective framework of multiple objectives-quality (surface roughness), environmental friendliness (specific cutting energy, tool wear, and oil consumption), and production (material removal rate and tool wear). In one of the first of its kind, the proposed approach uses cutting fluid parameters (oil quantity in the oil+air mixture, air pressure, and proportion of oil at the rake and flank face) along with machining parameters in multi-objective meta-heuristic optimization. The investigation reveals that the three objectives are distinct functions of process inputs. Thus, focus on one of the objectives-quality, production, and environmental aspects-hampers the others. A reasonable balance between the three aspects can be achieved through simultaneous optimization. Precise control over cutting fluid parameters, especially the oil proportion at rake and flank face, is a major factor that helps in improving environmental

Ecological, economical and technological perspectives based sustainability assessment in hybrid-cooling assisted machining of Ti-6Al-4 V alloy

“…Environmental innocuous cooling is already under research with the self-pressured LN 2 cooling and MQL [14]. In both systems, the pressured coolant along with the supply of air is applied through the nozzle on the tool rake/flank face.…”

Energy assessment of different cooling technologies in Ti-6Al-4V milling

“…A comprehensive analysis considering process-and product-related performances (tool wear, productivity, surface roughness, etc.) and specific energy was carried out in [16].…”

Bibliometric analysis of machining of titanium alloy research

“…Moreover, comprehensive machinability studies have also been carried out to investigate the correct combination of cutting instruments, machine tools, and cutting parameters. Also, many researchers have developed and implemented new technology and method such as minimum quantity lubrication (MQL), cryogenic cooling, different cooling, and lubrication systems, minimum quantity cooling lubrication (MQCL), multi-point injection MQL, nanofluid lubrication, sustainable cooling method, sustainable lubrication fluid, and laser-assisted machining, etc to address the key difficulties in the machining of titanium alloys [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]. Most of the previous review studies use qualitative methods to analyze the existing literature, so they failed to describe the overall paradigm of the research field.…”