Surface quality control technology of abrasive flow polishing S-shaped elbow

被引:0
作者
Junye Li
Tuo Sui
Hui Lu
Huawen Zhou
Jinbao Zhu
Jianhe Liu
Jinzhe Li
机构
[1] Changchun University of Science and Technology,Ministry of Education Key Laboratory for Cross
[2] Changchun University of Science and Technology,Scale Micro and Nano Manufacturing
来源
The International Journal of Advanced Manufacturing Technology | 2022年 / 121卷
关键词
Large eddy simulation; Subgrid model; Abrasive flow machining; S-shaped elbow; Surface quality;
D O I
暂无
中图分类号
学科分类号
摘要
The quality of the inner surface of the elbow used by common types of engines has a serious impact on its performance. In order to improve the machining accuracy of the inner surface and enhance the uniformity of the whole structure, large eddy simulation is carried out for the flow channel in an S-shaped elbow with the abrasive flow by using KET subgrid model. The distribution of flow field, vortex formation law, and the influence of the vortex in the process of polishing surface quality are analyzed, and the processing experiment is carried out. The numerical simulation result shows the inlet pressure determines the inlet velocity of abrasive particle flow. Higher inlet pressure will significantly increase the shear force, improve the uniformity of turbulence kinetic energy distribution on the elbow wall, and increase the number of abrasive flow vortices. The experiment result shows the changes in inlet pressure and abrasive particle size have a significant effect of the polishing effect on S-shaped elbow. The combination of coarse abrasive and high inlet pressure will produce an over-polishing phenomenon, the inner surface roughness of the elbow can be reduced to 76 nm, and the optimal process parameters determined by the experimental research can achieve the uniform polishing of the S-shaped elbow by the abrasive flow machining technology.
引用
收藏
页码:683 / 699
页数:16
相关论文
共 85 条
[1]  
Yuan X(2016)Experimental investigation of surface roughness effects on flow behavior and heat transfer characteristics for circular microchannels Chin J Aeronaut 29 1575-1581
[2]  
Tao Z(2018)Experimental study on precision grinding of titanium alloy conduit inner surface in aero-engine Aeronaut Manuf Technol 61 40-46
[3]  
Li HW(2020)Rheological characterisation of abrasive media and finishing behaviours in abrasive flow machining Int J Adv Manuf Technol 107 3569-3580
[4]  
Tian YT(2018)Experimental study on finishing of internal laser melting (SLM) surface with abrasive flow machining (AFM) Precis Eng 54 1-6
[5]  
Chen Y(2008)Experimental investigation of abrasive flow machining effects on injector nozzle geometries, engine performance, and emissions in a di diesel engine Int J Automot Technol 9 9-15
[6]  
Li LB(2017)Recent developments in abrasive flow finishing process: a review of current research and future prospects Proc Inst Mech Eng B J Eng Manuf 233 388-399
[7]  
Zeng JH(2016)A review on abrasive flow machining (AFM) Procedia Technol 25 1297-1304
[8]  
Kang L(2018)A study on the abrasive gels and the application of abrasive flow machining in complex-hole polishing Procedia Cirp 68 523-528
[9]  
Han B(2020)Abrasive flow machining (AFM) finishing of conformal cooling channels created by selective laser melting (SLM) Precis Eng 64 20-33
[10]  
Fu YZ(2020)Surface integrity in abrasive flow machining (AFM) of internal channels created by selective laser melting (SLM) in different building directions Procedia CIRP 87 315-320