Pang Shuoshuo, Zhao Wenxiang, Qiu Tianyang, Liu Weiliang, Yan Pei, Jiao Li, Wang Xibin
School of Mechanical Engineering, Beijing Institute of Technology, No. 5 Zhongguancun South Street, Haidian District, Beijing 100081, China.
Key Laboratory of Fundamental Science for Advanced Machining Beijing Institute of Technology, No. 5 Zhongguancun South Street, Haidian District, Beijing 100081, China.
Materials (Basel). 2023 Mar 9;16(6):2198. doi: 10.3390/ma16062198.
The machining process of aluminum alloy usually produces built-up edge and tool sticking problems due to their low hardness and large plastic deformation, which may further affect the machined surface quality and tool life. This paper aims to investigate the influence of different cutting fluids on the machined surface quality and tool life during the milling process of 7050 aluminum alloy. A novel cutting fluid (QC-2803) was considered in the study, which is synthesized by addition of alkyl alcohol amide and chlorinated polyolefin, and the traditional cutting fluid (CCF-10) was used as the control group. The physical and chemical properties of two cutting fluids were characterized. The milling process of 7050 aluminum alloy was carried out under two different cutting fluid conditions. The machined surface morphology, cutting force and tool wear morphology were observed during the process. Results show that the surface tension of the novel cutting fluid is significantly lower than that of the traditional cutting fluid, which makes it easier to produce a lubricating film between the aluminum alloy and tool, and further benefits the machined surface quality and tool life. As a result, the surface roughness and cutting force are reduced by ~20.0% and ~42.9%, respectively, and the tool life is increased by 25.6% in the case of the novel cutting fluid (QC-2803). The results in this paper revealed the important laws of cutting fluid with metal surface quality, cutting performance and tool wear, which helps to control the machined surface quality and tool life by the selection of cutting fluid during metal milling.
铝合金的加工过程通常会因其硬度低和塑性变形大而产生积屑瘤和刀具粘结问题，这可能会进一步影响加工表面质量和刀具寿命。本文旨在研究不同切削液对7050铝合金铣削过程中加工表面质量和刀具寿命的影响。研究中考虑了一种新型切削液（QC - 2803），它是通过添加烷基醇酰胺和氯化聚烯烃合成的，并将传统切削液（CCF - 10）用作对照组。对两种切削液的物理和化学性质进行了表征。在两种不同切削液条件下进行了7050铝合金的铣削过程。在此过程中观察了加工表面形貌、切削力和刀具磨损形貌。结果表明，新型切削液的表面张力明显低于传统切削液，这使得在铝合金和刀具之间更容易产生润滑膜，进而有利于加工表面质量和刀具寿命。结果，在使用新型切削液（QC - 2803）的情况下，表面粗糙度和切削力分别降低了约20.0%和约42.9%，刀具寿命提高了25.6%。本文的结果揭示了切削液与金属表面质量、切削性能和刀具磨损之间的重要规律，这有助于通过在金属铣削过程中选择切削液来控制加工表面质量和刀具寿命。
