摘要
本文开展Al-42wt%Si合金超临界CO_(2)微量润滑(scCO_(2)-MQL)铣削适用性研究,进行干切削、超临界CO_(2)(scCO_(2))和scCO_(2)-MQL铣削实验,通过全因素实验分析切削参数与冷却润滑方式对切削力、表面形貌的影响。结果表明:scCO_(2)-MQL方法可有效减小切削力,采用scCO_(2)-MQL加工Al-42wt%Si合金时宜采用较低的每齿进给量。对比可得,采用干铣削Al-42wt%Si合金时,切削速度为50m/min、每齿进给量为0.01mm/z的工件表面质量最好,其表面粗糙度值为0.321μm。scCO_(2)-MQL方法对高硅铝合金加工的适用性与硬质颗粒质量分数、铝基体表面形成特征有关。
The applicability of supercritical CO_(2)micro lubrication(scCO_(2)-MQL) milling of Al-42 wt% Si alloy is studied, and the experiments of dry cutting, supercritical scCO_(2)and scCO_(2)-MQL milling are carried out.The effects of cutting parameters and cooling and lubrication methods on cutting force and surface morphology are analyzed by all factor experiment.The results show that scCO_(2)-MQL method can effectively reduce the cutting force.At the same time, when using scCO_(2)-MQL to process Al-42 wt% Si alloy, it is appropriate to use a lower feed rate per tooth.By comparison, when dry milling Al-42 wt% Si alloy is adopted, the cutting speed is 50 m/min and the feed rate per tooth is 0.01 mm/z, the surface quality of the workpiece is the best, and its surface roughness value is 0.321μm.The applicability of scCO_(2)-MQL method to the processing of high silicon aluminum alloy is related to the weight percentage of reinforced particles and the surface formation characteristics of aluminum substrate.
作者
荆露
牛秋林
陈明
安庆龙
岳文辉
张恒
Jing Lu;Niu Qiulin;Chen Ming;An Qinglong;Yue Wenhui;Zhang Heng(School of Mechanical Engineering,Hunan University of Science and Technolo-gy,Xiangtan,Hunan 411201,China;不详)
出处
《工具技术》
北大核心
2022年第7期8-13,共6页
Tool Engineering
基金
国家自然科学基金(52075168)
湖南省教育厅优青项目(19B190)
湖南科技大学科学研究基金(KJ-2042)。
关键词
超临界CO_(2)
微量润滑
高硅铝合金
硬质颗粒质量分数
supercritical CO_(2)
minimum quantity lubrication
high Si-Al alloy
the weight percentage of reinforced particles