介观尺度下磨料浓度对磨粒流加工质量的影响  

Influence of abrasive concentration on processing quality of abrasive flow in mesoscopic scale

作　　者：李俊烨[1,2] 乔泽民 杨兆军[2] 张心明[1] LI Jun-ye QIAO Ze-min YANG Zhao-jun ZHANG Xin-ming(College of Mechanical and Electric Engineerings Changchun University of Science and Technology , Changchun 130022 ,China College of Mechanical Science and Engineering, Jilin Universty , Changchun 130022, China)

机构地区：[1]长春理工大学机电工程学院,长春130022 [2]吉林大学机械科学与工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2017年第3期837-843,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(51206011);吉林省科技发展计划项目(20160101270JC;20170204064GX);吉林省教育厅项目(吉教科合字[2016]第386号)

摘　　要：选择介观尺度下的粒子作为研究对象,通过设定介观尺度下的磨粒和工件磨削参数,进行了不同磨料浓度对磨粒流加工质量影响的仿真分析和试验研究。从数值模拟和试验研究结果可知:随着磨料浓度的增大,动压力和湍流动能升高,磨削效果增强;试验后的工件经过变焦非接触三维形貌测量和扫描电镜测试也得到了相同的结论,即随着磨料浓度的增大,经过固液两相磨粒流加工后的工件表面粗糙度逐渐降低,小孔质量和工件的使用性能得到提升,工件表面质量提高。Simulation analysis and experiments are performed to investigate the influence of the concentration of abrasive particles on the processing quality of abrasive flow in mesoscopic scale. Both analysis and experimental results show that with the increase in abrasive concentration, the dynamic pressure and turbulent kinetic energy increase, and the grinding effect is enhanced. The shapes of grinded workpieces are measured by zoom non-contact 3D measurement and scanned by SEM, and the results are similar to that of simulation. In other words, with the increase in abrasive concentration, the workpiece roughness decreases, the hole quality and workpiece performance are improved, the workpiece surface quality is enhanced.

关 键 词：机械制造工艺与装备 介观尺度 磨料浓度 仿真分析 

分 类 号：TH161.1[机械工程—机械制造及自动化]