This novel study compares the drilling of Inconel 718 using two cryogenic cutting environments i.e., liquid carbon dioxide (LCO₂) and liquid nitrogen (LN₂) based on parameters like tool wear, power consumption, and surface roughness; and Life Cycle Assessment (LCA) results at three cutting speeds. As compared to LN₂, 25–300% more holes were drilled using LCO₂ due to restricted growth of wear mechanisms like chipping and abrasion. Overall, 14%, 19%, and 11% decrease in thrust force, power consumption, and surface roughness, respectively, are found with LCO₂ as compared to LN₂. Additionally, LCA is carried out using ReCiPe 2016 midpoint (H) method to evaluate the impacts on the environment, human health, and depletion of natural resources. Although improved machining performance with lower power consumption is found with LCO₂, it has higher impacts on ecology across 17 of the 18 impact categories of the LCA.

这项新颖的研究根据工具磨损，功耗和表面粗糙度等参数，比较了使用两种低温切削环境（即液态二氧化碳（LCO ₂）和液态氮（LN ₂））对Inconel 718的钻孔。和生命周期评估（LCA）结果以三种切割速度进行。与LN ₂相比，由于磨损机制（例如碎裂和磨损）的增长有限，使用LCO ₂钻了25-300％的孔。总体而言，与LN ₂相比，LCO _2的推力，功耗和表面粗糙度分别降低了14％，19％和11％。此外，使用ReCiPe 2016中点（H）方法执行LCA，以评估对环境，人类健康和自然资源消耗的影响。尽管使用LCO ₂可以提高加工性能并降低功耗，但它在LCA的18种影响类别中的17种中对生态的影响更大。