Effect of MQL and nanofluid on the machinability aspects of hardened alloy steel. Issue 2 (3rd March 2020)

• Record Type: Journal Article
• Authors: Das, Anshuman; Das, Sudhansu Ranjan; Patel, Saroj Kumar; Biswal, Bibhuti Bhusan
• Is Part Of: Machining science and technology. Volume 24:Issue 2(2020)
• Page Start: 291
• Page End: 320
• Publication Date: 2020-03-03
• Subjects: AISI 4340 -- cermet inserts -- machinability -- MQL -- nanofluid; Machining -- Periodicals; 671.3505
• DOI: 10.1080/10910344.2019.1669167
• Languages: English
• ISSNs: 1091-0344

Abstract

Abstract: The current research comprises of various machinability aspects of 4340 hardened alloy steel which are scrutinized with in context of improvements in main cutting force, tool flank wear, crater wear, surface roughness, micro-hardness, machined surface morphology, chip morphology, chip reduction coefficient and apparent coefficient of friction under three different cutting fluid applications i.e. compressed air, water soluble coolant and nanofluid (using eco-friendly radiator coolant as the base fluid and Al2 O3 as the nanoparticle) using uncoated cermet cutting inserts and a comparative assessment was performed to select which fluid performed better in terms of various machining attributes among three cutting fluids. The minimum quantity lubrication technique (MQL) was used in which a smaller volume of coolant sprinkled at high pressure. This method is found as the most effective alternative to minimize health risks and machining costs, which is quite high in other setups. The test specimen was machined at three different cutting speeds i.e. 100, 120 and 140 m/min along with two machining parameters i.e. feed and depth of cut were kept constant respectively at 0.2 mm/rev and 0.4 mm. Outcomes made a conclusion that Al2 O3 enriched ecofriendly nanocoolant outperformed both compressed air and water soluble coolant in terms of every machinability aspects.