Tribological performance based machinability investigations in cryogenic cooling assisted turning of α-β titanium Alloy
Tribological performance based machinability investigations in cryogenic cooling assisted turning of α-β titanium Alloy
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DOI：
10.1016/j.triboint.2021.107032
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发表时间：
2021-04-03
影响因子：
6.2
通讯作者：
Kuntoglu, Mustafa
中科院分区：
文献类型：
--
作者：
Gupta, Munish Kumar;Song, Qinghua;Kuntoglu, Mustafa
钛加工被认为是一个具有挑战性的过程，因为当超过临界切削温度时，它能够与各种刀具材料相互作用，导致刀具过度磨损和表面光洁度差等。为了展示高效的加工工艺，本研究通过实验研究了可加工性的关键质量指标，即表面粗糙度、切削温度、刀具磨损，深入分析了用于关键应用的α-β钛合金在干燥、液氮三种可持续冷却环境下加工过程中的磨损刀具和切削力。 （液氮）和二氧化碳（CO2）。作为加工中的最佳替代方案，在冷却策略的作用下检查了切削速度和进给率对此类性能指标的影响。因此，与干式和 CO2 加工策略相比，液氮冷却的可行性已被证实对于 α-β 钛合金的加工更为重要。综上所述，在环保意识背景下，低温冷却（液氮冷却）辅助加工 α-β 钛已被默认为可持续策略。
Machining of titanium is considered as a challenging process due to its ability to interact with various tool materials when critical cutting temperature is exceeded, resulting in excessive tool wear and poor surface finish, etc. To exhibit an efficient machining process, this research study has experimentally investigated the key quality indicators of machinability, namely surface roughness, cutting temperature, tool wear, in-depth analysis of worn tool and cutting force in the machining process of alpha-beta titanium alloy, which used in critical applications, under three sustainable cooling environments i.e., dry, liquid nitrogen (LN2) and carbon dioxide (CO2). The effect of cutting speed and feed rate on such performance measures were examined under a function of cooling strategy as the best substitute in machining. As a result, the feasibility of LN2 cooling has been confirmed to be more significant for the machining of alpha-beta titanium alloy when compared to dry and CO2 machining strategies. To sum up, cryogenic cooling (LN2 cooling) assisted machining of alpha-beta titanium has acquiesced as a sustainable strategy in the context of environmental consciousness.