液压管路中连接头的磨粒流加工实验研究  

Abrasive flow machining experiments of connector of hydraulic line

作　　者：王景坡 凌洋 杭伟[2] 韦岚清 袁巨龙[2] WANG Jing-po;LING Yang;HANG Wei;WEI Lan-qing;YUAN Ju-long(State-Owned Wuhu Machinery Factory,Wuhu 241000,China;Key Laboratory of Special Equipment Manufacturing and Advanced Processing Technology,Ministry of Education,Zhejiang University of Technology,Hangzhou 310014,China)

机构地区：[1]国营芜湖机械厂,安徽芜湖241000 [2]浙江工业大学特种装备制造与先进加工技术教育部重点实验室,浙江杭州310014

出　　处：《机电工程》2021年第1期69-74,128,共7页Journal of Mechanical & Electrical Engineering

基　　金：中国博士后科学基金资助项目(2017M621966);浙江省公益技术研究资助项目(LGG19E050021)。

摘　　要：针对液压管路中连接头零件管道内壁光整加工的问题,以液压管路接头零件为研究对象,对采用磨粒流光整加工液压管路连接头内壁的加工机理、加工工艺进行了研究。根据零件材料硬度选择了试验磨粒,通过对比加工磨料对管壁表面质量和材料去除量的影响,得到了适用的液压管路连接头加工磨粒和工艺参数;分别选用碳化硅和金刚石作为加工磨粒,通过实验分析了磨粒流加工中磨粒对零件内壁表面的形貌、表面粗糙度、材料去除量的影响。研究结果表明:磨粒流加工可以有效降低管道内表面粗糙度,粗糙度值由原始的400 nm~500 nm下降到200 nm以下;相比金刚石磨粒,采用碳化硅磨粒加工后形成的零件内壁表面粗糙度更低,且粗糙度值分布均匀性更好,材料去除效率更高。Aiming at the finishing of pipe inner wall of hydraulic line connector,aviation metal pipe joint parts were adopted as research objects,the machining mechanism and processing technology of abrasive flow machining finishing metal pipe joint inner wall were studied.Test abrasive particles were chosen according to the hardness of material.The effects of abrasive machining on surface quality and material removal of metal pipe joint wall were compared,so that abrasive particles and processing parameters of metal pipe joint were confirmed.Silicon carbide and diamond were selected as abrasive particles in the experiment,and the effects of abrasive particles on surface morphology,surface roughness and material removal were analyzed.The results indicate that abrasive flow machining can effectively reduce the internal surface roughness of the pipe,and the roughness value decreases from 400 nm~500 nm to below 200 nm.Comparing with diamond abrasive grains,the inner wall surface of the part formed by silicon carbide abrasive grains has lower roughness,better distribution of roughness values,and higher material removal efficiency.

关 键 词：液压管路连接头 磨粒流加工 加工工艺 表面粗糙度 材料去除量 

分 类 号：TH137.8[机械工程—机械制造及自动化] TH16