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Analysis of cooling process of single point cutting tool by surface droplet impingement and internal transpiration methods

机译:表面液滴冲击和内部蒸腾方法分析单点切割工具的冷却过程

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In several metal cutting operations, it is imperative that the cutting tool is to be maintained at a desired operating temperature to improve the tool life. In this study, two possible methods are proposed for the cooling of a single point cutting tool (SPC). In the first method, cooling of a cutting tool is accomplished by the direct impingement of liquid nitrogen droplets on to the tool. In the second method, internal transpiration is used to cool the cutting tool by employing a mixer of liquid nitrogen coolant and air. From the results of the present investigation, both the methods give the same cooling rate. The internal transpiration cooling can be further improved by increasing the effective surface area of the cutting tool and also by using a smaller droplet diameter of liquid nitrogen.
机译:在几种金属切割操作中,必须保持切削工具在期望的操作温度下保持以改善刀具寿命。在该研究中,提出了两种可能的方法,用于冷却单点切割工具(SPC)。在第一方法中,通过直接冲击液氮液滴对工具的直接冲击来实现切削工具的冷却。在第二种方法中,通过采用液氮冷却剂和空气的混合器来使用内部蒸腾来冷却切削工具。从本研究结果来看,两种方法都提供相同的冷却速率。通过增加切削工具的有效表面积以及使用较小的液氮的液滴来进一步提高内部蒸腾冷却。

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