Influence of biodegradable coolants on machinability improvement – a review

ABSTRACT

Cooling applications in machining have a significant role to play, and many functions cannot be carried out effectively without cooling. Coolant controls tool life by reducing cutting temperatures, dimensional precision, surface roughness, and power consumed in machining, there by improving productivity. Conventional coolants are commonly used to control the cutting temperature. However, the hike in global carbon emissions has happened due to excessive use of coolants in manufacturing industries. As a result, according to the International Organization for Standardization, it is critical to minimise the demand for energy consumption and carbon emissions. The need for renewable and biodegradable coolants is due to environmental concerns and rising regulations on pollution and emissions. In this paper, various attempts carried out by researchers are discussed to overcome these challenges. Hence, the uses of biodegradable coolants are being suggested to improve the machinability of metals. However, the research in the sea areas is relatively less. Hence, present review explores advances in biodegradable coolants through the use of different biodegradables and their efficiency in machining. Indeed, these biodegradable coolants significantly decreased the ecological problems caused by mineral-based coolants. As a conclusion, future research should concentrate on these aspects. This is a step towards sustainable greenmachining.

KEYWORDS:

• Conventional coolant
• Biodegradable coolant
• Machining process, modeling techniques

Nomenclature

ANN	=	Artificial Neural Network
CBN	=	Cubic Boron Nitride
DRY-CT	=	Dry turning with cryogenically treated tool
CMQL	=	Cryogenic minimum quantity lubrication
HOSO	=	High oleicsoybean oil
KOTMPE	=	Karanja oil trimethylol propane ester
MFW	=	Metal working fluid
MQL	=	Minimum quantity lubrication
NFMQL	=	Nano fluid minimum quantity lubrication
MQL-CT	=	Minimum quantity lubrication with cryogenically treated tool
RSM	=	Response Surface Methodology
SE	=	Synthetic ester
TGRA	=	Taguchi integrated Grey Relational Analysis
UMQL	=	Ultrasonic vibration-assisted minimal quantity lubrication
Fc	=	Cutting force, N
Ra	=	Surface roughness in μm
d	=	Depth of cut, mm
f	=	Feed rate, mm/rev
v	=	Cutting speed, m/min

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Cited the data and available in manuscript

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