Nanofluid as coolant for grinding process: An overview

Abstract

Abstract. This paper reviews the recent progress and applications of nanoparticles in lubricants as a coolant (cutting fluid) for grinding process. The role of grinding machining in manufacturing and the importance of lubrication fluids during material removal are discussed. In grinding process, coolants are used to improve the surface finish, wheel wear, flush the chips and to reduce the work-piece thermal deformation. The conventional cooling technique, i.e., flood cooling delivers a large amount of fluid and mist which hazardous to the environment and humans. Industries are actively looking for possible ways to reduce the volume of coolants used in metal removing operations due to the economical and ecological impacts. Thus as an alternative, an advanced cooling technique known as Minimum Quantity Lubrication (MQL) has been introduced to the enhance the surface finish, minimize the cost, to reduce the environmental impacts and to reduce the metal cutting fluid consumptions. Nanofluid is a new-fangled class of fluids engineered by dispersing nanometre-size solid particles into base fluids such as water, lubrication oils to further improve the properties of the lubricant or coolant. In addition to advanced cooling technique review, this paper also reviews the application of various nanoparticles and their performance in grinding operations. The performance of nanoparticles related to the cutting forces, surface finish, tool wear, and temperature at the cutting zone are briefly reviewed. The study reveals that the excellent properties of the nanofluid can be beneficial in cooling and lubricating application in the manufacturing process.

A Review of Friction Performance of Lubricants with Nano Additives

“…This positive effect of the h-BN nanoparticles on the friction performance is due to the formation of a boron-oxide tribofilm on the interacting surface because of tribochemical reactions [ 18 ]. Moreover, the high thermal conductivity of h-BN nanoparticles helps to carry away the heat generated due to rubbing, helping the lubricant to maintain its viscosity, which ultimately results in less metal-to-metal contact and a reduction in friction and wear [ 53 ]. Figure 7 shows a comparison of the COF of different lubricants with and without the addition of h-BN nanoparticles.…”

An Evaluation on Machinability Characteristics of Titanium and Nickel Based Superalloys Used in Aerospace Industry

“…It is dispersed into base liquids such as. The excellent properties of the nanofluid are beneficial for cooling and lubrication in machining and reduce the friction coefficient [63]. Since nano liquid has convectional transmission and wettability of cooling and lubricant, it especially reduces flank wear [64].…”

The Influence of the Depth of Grinding on the Condition of the Surface Layer of 20MnCr5 Steel Ground with the Minimum Quantity Lubrication (MQL) Method

“…The flow of the lubricating medium is assisted by a transferring medium-a stream of compressed air [22,23], which, to a small extent, also acts as a cooling agent [24]. Published data indicate that in the MQL method, the lubricant is supplied in quantities of 10-500 mL/h [25][26][27]. In comparison, water-oil emulsions in the flood method are used in amounts exceeding 120,000 mL/h, whereas while grinding, the amount ranges from 300,000 to 1,200,000 mL/h, depending on the process technology.…”