Industry nowadays is concentrating on developing various strategies and approaches for implementing sustainable manufacturing, which is a "need of the hour." With the advent of global competitiveness, industries are focusing their efforts on lowering machining costs, which account for a significant portion of a company's production cost per part.' The traditional method of cooling the machining zone by using a lot of coolant/cutting fluids at a rate of several litres per hour has a lot of people worried. Due to rigorous government requirements, industries must replace flood-coolant assisted machining with new techniques such as the 'Minimum Quantity Lubrication' (MQL) coolant delivery methodology. The goal of this investigation was to see if a novel approach called Minimum Quantity Lubrication cooling could be used to replace traditional flood cooling. The goal of this study was to see how changing the nozzle orientation angle and airflow rate affected MQL milling of aerospace aluminium Al7075-T6 alloy with an uncoated carbide tool. The three ways of coolant delivery that have been examined are dry, MQL, and nanofluid MQL (nanoparticle suspended oil with MQL). Cutting speed [150 m/min, 208 m/min, 264 m/min], feed rate [95 mm/min, 110 mm/min, 125 mm/min], and cut depth [0.5 mm, 1.3 mm, 2 mm] are employed as process variables. Two nozzle angles of 25° and 50° were evaluated with 1.5 kg/cm2 and 3 kg/cm2 air flow rates. At a 1.5 kg/cm2 air flow rate, the best results were obtained. 250 degrees was discovered to be the optimal nozzle angle. The use of nanofluid MQL machining to achieve the lowest temperature and generate the least amount of heat is a viable option. Nanofluid MQL technology is employed in the MQL technique to achieve a better surface finish with reduced workpiece surface roughness (Al7075-T6).
Author(S) Details
Harshit B. Kulkarni
Department of Mechanical Engineering, KLS Gogte Institute of Technology, Udyambag, Belagavi, Karnataka, India.
View Book:- https://stm.bookpi.org/NPER-V10/article/view/6497
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