Sustainability analysis of lubricant oils for minimum quantity lubrication based on their tribo-rheological performance
Sustainability analysis of lubricant oils for minimum quantity lubrication based on their tribo-rheological performance
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DOI：
10.1016/j.jclepro.2017.07.078
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发表时间：
2017-10-15
影响因子：
11.1
通讯作者：
Lopez de Lacalle, L. N.
中科院分区：
文献类型：
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作者：
Pereira, O.;Martin-Alfonso, J. E.;Lopez de Lacalle, L. N.
如今，环保型切削液应该应用于制造过程中。具体地说，在许多加工过程中，最小润滑量（MQL）的使用被确立为常见的程序。在本文中，分析了使用天然可生物降解油作为MQL中使用的传统菜籽油的替代品，比较了五种不同的替代品（即：向日葵油、高油酸向日葵油、蓖麻油和ECO-350回收油）。首先，目的是评估所提出的油的可行性，只是分析它们的摩擦学和流变学特性。其次，进行了一系列实验测试，以验证它们在切割Inconel 718（一种常用于航空部件的难切割材料）时的行为。最后，进行了生命周期评价，目的是分析其环境可行性。结果表明，低粘度与高摩擦系数的组合意味着刀具寿命的增加。在这条生产线上，ECO-350再生油表现出可行的性能，与商业菜籽油相比，可将刀具寿命提高30%。然而，从环境的角度来看，其回收过程必须改进。考虑到这两个问题，高油酸向日葵油在它们之间呈现出平衡。一方面，它提高了刀具寿命（15%），另一方面，与菜籽油相比，它对环境的影响相似。这意味着一种进步，即不仅在环境方面而且在技术上更有效率。(C)2017爱思唯尔有限公司版权所有
Nowadays, environmentally friendly cutting fluids should be applied in manufacturing processes. Concretely, in many machining processes the use of minimum quantity of lubrication (MQL) is established as common routine. In this paper, the use of natural biodegradable oils as an alternative to traditional canola oils used in MQL is analyzed, comparing five different alternatives (i.e.: sunflower oil, high oleic sunflower oil, castor oil and ECO-350 recycled oil). Firstly, the aim is to evaluate the feasibility of the proposed oils, just analyzing their tribological and rheological characteristics. Secondly, a full battery of experimental tests was performed in order to validate their behavior during cutting Inconel 718, a difficult-to-cut material commonly used in aeronautical components. Finally, life cycle assessment was carried out with the aim of analyzing their environmental feasibility. Results show that the combination of low viscosity with high friction coefficient implies an increase in tool life. In this line, ECO-350 recycled oil presents a feasible behavior and improves the tool life up to 30% in comparison with commercial canola oil. However, its recycling process has to be improved from an environmental point of view. Taking both issues, high oleic sunflower oil presents a balance between them. On one hand, it improves tool life (15%) and on the other hand, similar environmental impact is obtained compared with canola oil. This supposes an advance, being more efficiently, not only environmentally speaking but also technically. (C) 2017 Elsevier Ltd. All rights reserved.