摘要
针对发动机喷油嘴零件内腔表面质量差和加工效率低下的问题,对发动机喷油嘴倒锥孔的磨粒流加工工艺参数进行研究。利用流体力学软件Fluent模拟不同磨粒流压力、浓度等工艺参数下,喷油嘴倒锥孔内流道的稳态压强、湍动能分布及速度分布情况。结果表明,要想获得较理想的内表面质量,应适当增加入口压力并选取黏度较低的磨粒流液相介质。模拟结果为磨粒流加工参数的优化提供了理论依据。
To improve the poor surface quality and low processing efficiency of the internal cavity of the engine fuel injection nozzle parts,the process parameters of the abrasive particle flow processing of the inverted-hole of the engine fuel injection nozzle were studied.The fluid dynamics software Fluent was used to simulate the steady-state pressure,turbulent kinetic energy distribution and velocity distribution of the flow channel in the inverted-hole of the nozzle under different process parameters such as pressure and concentration of abrasive flow.The results show that appropriate increasing inlet pressure and selecting the liquid medium of abrasive flow with lower viscosity can obtain more ideal inner surface quality.The simulation results provides sound theoretical basis for the optimization of abrasive flow processing parameters.
作者
刘江
黄晓斌
何吕
唐志雄
LIU Jiang;HUANG Xiaobin;HE Lyu;TANG Zhixiong(School of Mechanical Engineering,North University of China,Taiyuan 030051,China;Shanxi Deep Hole Processing Engineering Technology Research Center,North University of China,Taiyuan 030051,China)
出处
《机械制造与自动化》
2021年第2期40-42,50,共4页
Machine Building & Automation
基金
中北大学自然科学研究基金资助项目(XJJ2016002)。
关键词
喷油嘴
倒锥孔
磨粒流
数值模拟
nozzle
inverted-hole
abrasive flow
numerical simulation
