基于磨粒流加工阀套内表面的数值模拟研究  

Study on the effect of inlet pressure on the inner surface of valve sleeve processed by abrasive grain flow

作　　者：姚世琦 杨盛强 YAO Shiqi;YANG Shengqiang(AVIC Changchun Control Technology Co.Ltd.,Changchun 130102,China;School of Mechatronic Engineering,Changchun University of Science and Technology,Changchun 130022,China)

机构地区：[1]中国航发长春控制科技有限公司,吉林长春130102 [2]长春理工大学机电工程学院,吉林长春130022

出　　处：《长春工业大学学报》2024年第1期81-86,共6页Journal of Changchun University of Technology

基　　金：吉林省教育厅科学技术研究项目(JJKH20220734KJ);重庆市自然科学基金项目(CSTB2022NSCQ-MSX0602)。

摘　　要：采用磨粒流精密加工方法对阀套内表面光整处理,为分析入口压力及磨料浓度对磨粒流加工阀套内表面的影响,以阀套为研究对象,对固液两相磨粒流加工过程进行数值模拟分析。通过分析不同入口压力及磨料浓度下的阀套内表面受到的壁面剪切力和压力大小,发现随着入口压力的增大,阀套内表面受到的壁面剪切力逐渐增大。随着磨料浓度的增大,阀套内表面受到的壁面剪切力及压力逐渐减小,压力减小不明显。当磨料从大孔流经小孔时,壁面剪切力增大,磨粒对阀套内表面的切削作用增大,获得的表面完整性较好,为磨粒流精密加工技术的发展奠定了基础。The inner surface of the valve sleeve is polished by the abrasive flow precision machining method.In order to analyze the effect of inlet pressure and abrasive concentration on the inner surface of the valve sleeve by abrasive flow machining,numerical simulation is performed to analyze the solid-liquid two-phase abrasive flow machining process with the valve sleeve as the research object.By analyzing the wall shear force and pressure on the inner surface of the valve sleeve under different inlet pressures and abrasive concentrations,it is found that the wall shear force on the inner surface of the valve sleeve increases gradually with the increase of inlet pressure.With the increase of abrasive concentration,the wall shear force and pressure on the inner surface of the valve sleeve gradually decrease,and the pressure decrease is not obvious.When the abrasive from the large hole flow through the small hole,the wall shear force increases,the cutting effect of the abrasive particles on the inner surface of the valve sleeve increases,and the surface integrity obtained is better,which lays the foundation for the development of abrasive flow precision processing technology.

关 键 词：磨粒流加工 阀套 表面完整性 数值模拟 多余物去除 

分 类 号：TH164[机械工程—机械制造及自动化]