Evaluation of MQL performances using various nanofluids in turning of AISI 304 stainless steel

Abstract

In recent years, the need for eco-friendly machining processes has increased dramatically in order to limit the excessive use of conventional cutting fluids, thereby reducing their negative effects on both environment and operator's health. In this context, dry cutting, minimum quantity lubrication (MQL) and nanofluid assisted MQL, as environmentally alternatives, have been positively shown their significance to overcome this problem. This experimental study was conducted from the perspective of performance analysis of machining characteristics in turning of AISI 304 austenitic stainless steel (ASS) under dry, MQL and nanofluids and hybrid nanofluids assisted MQL conditions with consideration of surface roughness (Ra), main cutting forces (Fc) and cutting temperature (T). In preparing the nanofluids, nano Molybdenum disulfide (MoS2), Multi-walled carbon nanotube (MWCNT) and nano graphene particles were added to the commercial vegetable cutting fluid as additives. Additionally, the effects of lubricating conditions on flank wear (VB) were investigated. In the end, statistical analysis, regression modeling and multi-criteria optimization based desirability function were performed. The results revealed that the Ra, Fc and T as well as VB were found to be lower with the use of nano graphene reinforced nanofluid assisted MQL followed by nano graphene/MoS2 reinforced hybrid nanofluid assisted MQL, MWCNT/MoS2 reinforced hybrid nanofluid assisted MQL, MWCNT reinforced nanofluid assisted MQL, nano MoS2 reinforced nanofluid assisted MQL and MQL, respectively, as compared to dry condition. Finally, it is worth mentioning that the nano graphene has the capability to perform as lubricant/coolant, thus contributing positively to the turning process.

Comparison of metal removal rate and surface roughness optimization for AISI 316L using sunflower oil minimum quantity lubrication and dry turning processes

“…( 3) and (4) as characteristic equations, the upper and lower limits of the solution set are shown in Table 6, the properties of each operator correspond to Table 7, and the limit equation adopts Eq. (10).…”

“…They concluded that the surface roughness observed with minimum quantity lubrication turning was lower than dry turning [9]. Touggui et al [10] conducted a study to improve the machining performance in turning on AISI 304 austenitic stainless steel (ASS) under dry, minimum quantity lubrication, nanofluids, and hybrid nanofluid-assisted minimum quantity lubrication conditions. The main purpose of this experimental study is to evaluate and compare the effect of dispersed nano-additives in the vegetable cutting fluid on the responses under consideration.…”

AISI 904L Süper Dubleks Paslanmaz Çeliğin Tornalanmasında MMY, hBN ve N2 Soğutma/Yağlama Koşullarının Performans Değerlendirmesi

“…Touggui ve diğ. MoS2, MWCNT, grafen, MWCNT/MoS2 ve grafen/MoS2 katkı maddelerini ekledikleri nanoakışkanları saf MMY ve kuru işlemeyle kıyaslamışlardır [11]. Deney sonuçlarını analiz eden araştırmacılar nanoakışkanların bariz bir şekilde iyileştirme sunduğunu rapor etmişlerdir.…”

Measurement and Evaluation of Machinability Characteristics in Turning of Train Wheel Steel via CVD Coated-RCMX Carbide Tool

“…For these reasons, the dry machining method without using cutting fluid is becoming more and more popular. Even if the negative effects of cutting fluids are eliminated in dry machining, it is very difficult to abandon the use of cutting fluids due to high efficiency and performance advantages in machining [4], [5]. In dry machining, there is relatively more friction and adhesion and higher temperatures at the cutting tool and workpiece interface [6].…”