This paper reports on a study undertaken to investigate the notion that significant performance benefits can be derived through the “biologicalisation” of advanced manufacturing systems. In particular, the main objective was to apply a bio-integration approach to test whether mineral oil in conventional metalworking fluids (also commonly referred to as cutting fluids) can be substituted with suitable microorganisms without negatively affecting the performance of the fluid. Two yeast strains were used as primary compositional element in custom-prepared metalworking fluids (MWF) and tested in full-scale high-speed milling of Ti6Al4V titanium alloy with flood cooling delivery, representative of industrial applications. It is shown that both yeast strains provided similar or better performance in terms of cutting forces, tool wear and workpiece surface finish compared to a mineral oil-based reference MWF. New insights into the working mechanisms of the yeast-based MWFs as well as their composition are discussed, based on microscopy and chemical analyses. The results provide early stage evidence for a significant potential to reduce or even eliminate the use of mineral oils in metalworking fluids, with substantial benefits in process efficiency, health and safety for machine operators, and sustainability through the use of renewable and benign materials.

本文报告了一项旨在调查这一观念的研究，即可以通过先进制造系统的“生物化”获得显着的性能优势。特别地，主要目的是应用生物整合方法来测试常规金属加工液（通常也称为切削液）中的矿物油是否可以被合适的微生物替代而不会对流体的性能产生负面影响。两种酵母菌株被用作定制制备的金属加工液（MWF）中的主要组成元素，并在Ti6Al4V钛合金的全尺寸高速铣削中进行了泛洪冷却输送，这是工业应用的代表。结果表明，两种酵母菌株在切削力方面均提供相似或更好的性能，与基于矿物油的参考MWF相比，工具磨损和工件表面光洁度更高。基于显微镜和化学分析，讨论了基于酵母的MWF的工作机制及其组成的新见解。该结果提供了减少或什至消除金属加工液中矿物油使用的巨大潜力的早期证据，通过使用可再生和良性材料，在过程效率，机器操作员的健康和安全以及可持续性方面具有显着优势。