Centre for Computational Modeling, Chennai Institute of Technology, Chennai, 600069, Tamil Nadu, India.
Department of Mechanical Engineering, Chennai Institute of Technology, Chennai, 600069, Tamil Nadu, India.
Sci Rep. 2024 Nov 25;14(1):29194. doi: 10.1038/s41598-024-80254-z.
With the increasing emphasis on sustainable manufacturing practices, eco-friendly lubricants have gained significant attention to moderate the friction coefficient at the tool-work interface. In line with this, the contemporary study aimed to examine the viability of Alumina-enriched sunflower bio-oil as a metalworking fluid. Different volume fractions of Alumina nanoparticles (varying from 0 to 1 vol%) were mixed with sunflower bio-oil, and the physical properties, for instance, contact angle and dynamic viscosity, were analyzed to determine the optimal concentration of Alumina. Subsequently, machining experiments were executed on Hastelloy C-276 under various lubricating conditions, including dry cutting, compressed air, sunflower bio-oil, and 0.6 vol% Alumina-sunflower bio-oil. A comparative analysis among these lubricating mediums demonstrated that sunflower bio-oil with a 0.6 vol% Alumina concentration outperformed others, resulting in a significant reduction of surface roughness, and tool wear by 73.31%, and 82.14% respectively when compared to dry machining. Besides, the utilization of 0.6 vol% Alumina-sunflower bio-oil has demonstrated a reduction of 17.86% in total machining cost, along with reductions of 15.44% in energy consumption and carbon emissions, when compared to dry machining. Finally, a Taguchi-designed experiment consisting of sixteen trials was performed in different lubricating conditions, and a Fuzzy-Mamdani model was employed to achieve a sustainable machining environment. The sustainability assessment results indicated that a cutting speed of 75 m/min, feed of 0.05 mm/tooth, depth of cut of 0.15 mm, and the utilization of the 0.6 vol% Alumina-sunflower bio-oil resulted in the most sustainable machining environment, with the highest Multi-Performance Characteristics Index of 0.75.
随着可持续制造实践的重视，环保型润滑剂在适度控制工具-工件界面摩擦系数方面引起了极大关注。根据这一点，本研究旨在研究富含氧化铝的葵花籽油生物油作为金属加工液的可行性。将不同体积分数的氧化铝纳米粒子（0 到 1 体积%）与葵花籽油混合，分析其物理性质，如接触角和动态粘度，以确定氧化铝的最佳浓度。然后，在不同的润滑条件下（包括干切削、压缩空气、葵花籽油和 0.6 体积%氧化铝-葵花籽油）对 Hastelloy C-276 进行了加工实验。对这些润滑介质进行了比较分析，结果表明，当与干切削相比，含有 0.6 体积%氧化铝浓度的葵花籽油的表面粗糙度和刀具磨损分别降低了 73.31%和 82.14%。此外，与干切削相比，0.6 体积%氧化铝-葵花籽油的总加工成本降低了 17.86%，能源消耗和碳排放分别降低了 15.44%。最后，在不同的润滑条件下进行了十六次试验的 Taguchi 设计实验，并采用模糊-Mamdani 模型实现了可持续的加工环境。可持续性评估结果表明，在切削速度为 75 m/min、进给量为 0.05 mm/tooth、切削深度为 0.15 mm 和使用 0.6 体积%氧化铝-葵花籽油的条件下，可获得最可持续的加工环境，多性能特性指数最高，为 0.75。
