This work mainly focuses on the effectiveness of both rake and flank face application of the different metal working fluid (MWF) strategies such as liquid CO₂, minimal quantity lubrication (MQL), and emulsion in face milling of Ti–6Al–4V alloy. Modified CoroMill 600 cutter via internal channels to both rake and flank faces of the inserts with PVD coated inserts were used for the studies. This novel approach of delivery of MWFs has been investigated on effective thermo-mechanical loads; in terms of the evolution of cutting temperature, cutting forces, and residual stresses. The hardness of the machined surfaces and chip microstructure analysis were also conducted to understand more about the mechanical and thermal load effects in machined material and observed parameters. It has been found that the effectiveness of both rake and flank application of the liquid CO₂ machining is a better alternative for the emulsion and MQL strategies. Low thermal deformation of the material, higher magnitude of compressive residual stresses, and lower thermal load throughout the machining cycle have been observed. However, an increase in the mechanical load was observed because of the cold strength hardening of the Ti–6Al–4V workpiece at the liquid CO₂ environment. These effects are negligible at room temperature after machining. Overall results show that the cryogenic machining offers best and lower thermal load effects over MQL and emulsion strategies for both rake and flank applications.

这项工作主要集中在不同金属加工液（MWF）策略（例如液态CO ₂）的前刀面和后刀面应用的有效性上Ti-6Al-4V合金的端面铣削中的润滑，最小量润滑（MQL）和乳化液。研究人员使用经过改进的CoroMill 600铣刀，通过内部通道连接刀片的前刀面和后刀面，并使用PVD涂层刀片。在有效的热机械载荷下，已经研究了这种新颖的MWF输送方法。根据切削温度，切削力和残余应力的变化。还进行了机械加工表面的硬度和切屑微结构分析，以了解有关机械加工材料中的机械和热负荷效应以及观察到的参数的更多信息。已经发现，倾斜和侧面施加液态CO ₂的有效性对于乳液和MQL策略，机械加工是更好的选择。已经观察到材料的低热变形，较高的压缩残余应力幅度以及整个加工周期的较低热负荷。但是，由于在液态CO ₂环境下Ti-6Al-4V工件的冷强度硬化，导致机械负荷增加。加工后在室温下这些影响可以忽略不计。总体结果表明，对于前刀面和后刀面应用，低温加工提供优于MQL和乳剂策略的最佳且较低的热负荷效果。