Research on tool wear mechanism of liquid nitrogen internal cooling machining

IF 5.3 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-04-02 DOI:10.1016/j.wear.2025.206064

Yongquan Gan , Qiyu Han , Zhenhua Jiao , Liangliang Li , Hua Jia , Xianghua An

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引用次数: 0

Abstract

Due to its low temperature, high cooling efficiency, environmental friendliness, and other advantages, liquid nitrogen cooling machining is frequently employed in the processing of difficult-to-machine materials. Currently, liquid nitrogen cooling is most commonly performed using liquid nitrogen flood cooling. However, scholars hold differing views on the results of tool wear. This study uses Ti-6Al-2Zr-1Mo-1V titanium alloy as the subject to analyze tool life and wear mechanisms under four different cooling conditions: Dry cutting, Wet cutting (using cutting fluid), LN₂ flood cooling, and LN₂ internal cooling. The results demonstrate that although liquid nitrogen cooling does not exhibit a significant lubrication effect, internal cooling with liquid nitrogen provides more stable and efficient cooling, effectively inhibiting tool adhesion and oxidation wear. Additionally, it reduces the influence of the Leidenfrost effect, significantly improving tool life. Furthermore, it is shown that the method of applying liquid nitrogen as a cooling medium significantly impacts tool wear outcomes. Overall, liquid nitrogen internal cooling is a viable approach for enhancing tool life during the machining of difficult-to-machine materials.

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.