Abstract This work explores the machinability and sustainability of newly developed environment-friendly hybrid techniques for Ti-6Al-4V turning in terms of energy consumption, surface finish, and machining costs. Performances obtained under hybrid turning techniques namely cryogenic-ultrasonic assisted turning and cryogenic-ultrasonic-minimum quantity lubrication assisted turning are compared with the cryogenic assisted turning technique. Energy consumption in the turning processes is assessed in terms of energy consumed by the machine tool, active cutting energy, and energy efficiency. Results show that active energy consumed by machine tool is decreased by up to 1.8–3.6% using hybrid turning techniques as compared to cryogenic assisted turning technique. An increase in energy efficiency values is observed at higher levels of input process parameters using all three turning techniques. Average surface roughness values are decreased by up to 32%–42% using hybrid turning techniques as compared to the cryogenic assisted turning technique. A sustainability index, i.e., relative sustainability of process is used to quantify the sustainability of the turning operations. The results show a significant role of newly developed hybrid technologies in the machining industry to meet energy-saving and sustainability goals without compromising product quality.

中文翻译：

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内部开发的用于车削 Ti-6Al-4 V 的环保混合技术的可持续性评估

摘要 这项工作探讨了新开发的 Ti-6Al-4V 车削环保混合技术在能耗、表面光洁度和加工成本方面的可加工性和可持续性。将低温-超声辅助车削和低温-超声-微量润滑辅助车削混合车削技术与低温辅助车削技术的性能进行了比较。车削过程中的能源消耗是根据机床消耗的能源、主动切削能源和能源效率来评估的。结果表明，与低温辅助车削技术相比，使用混合车削技术可将机床消耗的有功能量降低多达 1.8-3.6%。使用所有三种车削技术，在更高水平的输入工艺参数下观察到能效值的增加。与低温辅助车削技术相比，使用混合车削技术的平均表面粗糙度值降低了 32%–42%。可持续性指数，即过程的相对可持续性，用于量化车削操作的可持续性。结果表明，新开发的混合技术在机械加工行业中发挥着重要作用，可以在不影响产品质量的情况下实现节能和可持续性目标。过程的相对可持续性用于量化车削操作的可持续性。结果表明，新开发的混合技术在机械加工行业中发挥着重要作用，可以在不影响产品质量的情况下实现节能和可持续性目标。过程的相对可持续性用于量化车削操作的可持续性。结果表明，新开发的混合技术在机械加工行业中发挥着重要作用，可以在不影响产品质量的情况下实现节能和可持续性目标。