摘要
由于铌合金材料的特殊物理化学性能,目前切削加工中多采用去离子水作为切削液,但其润滑性能较差。本文提出用二维纳米材料改性水基切削液的方式来调控铌合金材料的切削加工过程。利用摩擦磨损试验机开展了去离子水与不同类型二维纳米材料改性水基切削液的球-盘摩擦副摩擦磨损试验,优化得到了局域内最优的二维纳米材料改性切削液。利用单点金刚石车床开展了铌合金材料的切削加工试验,结果表明,0.1%质量分数的氧化石墨烯改性水基切削液具有优异的作用效果,切削加工表面粗糙度值由约200nm降至约40nm,表面质量提升了约80%。利用有限元仿真软件研究了不同摩擦系数下的切削加工过程,论证了降低刀具-工件-切削液体系下摩擦系数的重要性,该研究对提升铌合金材料零部件切削加工表面质量具有非常重要的指导意义。
Deionized water is used in the mechanical manufacturing of Nb-based alloy as cutting fluid because of its special properties.However, the lubricating property of deionized water is relatively bad.This paper proposes a modified cutting fluid with two-dimensional materials to regulate the cutting process of Nb-based alloy parts.The frictional characteristic behaviors of different two-dimensional materials modified water-based cutting fluids and deionized water are conducted on the tribometer machine with ball-on-disk friction pair, and the optimized cutting fluid is achieved.It turns out that 0.1% mass fraction of grapheme oxide fluid has excellent effect of minimum friction coefficient.The cutting experiments of Nb-based alloy are conducted with the single diamond lathe, and compared to the deionized water, the surface roughness of optimized cutting fluid decreases from 200 nm to 40 nm.The cutting process with different friction coefficients is simulated by the finite element software, the significance of friction coefficient reduction is demonstrated under tool-workpiece-cutting fluid system.This research provides beneficial guidelines for the improvement of surface quality during the mechanical manufacturing of Nb-based alloy parts.
作者
黄鹏
罗伟
熊雪峰
Huang Peng;Luo Wei;Xiong Xuefeng(Institute of Materials,China Academy of Engineering Physics,Mianyang,Sichuan 621907,China)
出处
《工具技术》
北大核心
2022年第6期26-29,共4页
Tool Engineering
基金
表面物理与化学重点实验室学科发展基金(XKFZ201907)。
关键词
铌合金
二维纳米材料
改性水基切削液
Nb-based alloy
two-dimensional material
modified water-based cutting fluid
