强化研磨磨料配比试验  

Experiment and Research of Abrasive Ratio Based on Reinforced Grinding Processing

作　　者：刘晓初[1,2] 陈凡[1,2] 张超[1,2] 单士印 廖少棚 

机构地区：[1]广州大学 [2]金属材料强化研磨高性能加工重点实验室 [3]清远市住房与城乡建设管理局工程建设安全监督站

出　　处：《工具技术》2016年第7期27-30,共4页Tool Engineering

基　　金：国家自然科学基金(51275100);广州市科技计划项目(201508010051;穗科信字[2013]163-19)

摘　　要：在不同直径组合的轴承钢球、不同粒度组合的研磨粉条件下,对轴承套圈进行强化研磨加工试验,并测量了加工后套圈表面的硬度和粗糙度。试验分析结果表明:随着钢球直径的增大,加工后工件表面硬度先增大后减小;研磨粉粒度越大,加工工件表面粗糙度越小,为强化研磨磨料配比的选择提供了依据。通过加工前后轴承套圈表面SEM扫描,发现加工前较加工后表面光洁,但是加工后的套圈表面出现了许多类似于小坑洼的"油囊",使套圈表面具有自润滑功能,因此可以提高润滑油的利用率,并延长轴承使用寿命。Under different diameters of bearing steel ball and different sizes of grinding powder conditions,an experi- ment of reinforced grinding processing on the surface of bearing ring was earried out,then the surface hardness and rough- ness were measured. The research showed that with the increase of steel ball diameters, the machining workpiece surface hardness increased at first but then decreased, and the greater the grinding powder particle size, the smaller the surface roughness was,which provided evidences for the selection of grinding abrasive ratio. Bearing ring surfaces of pre- machi- ning and machining were scanned by SEM and found the former was smoother and brighter comparing with the latter, but there were many pits like＂ oil capsules＂ on the machining surface, which made the bearing ring had the function of self- lu- bricating so that c, ouhl improve the utilization of lubricating oil and prolong the service life of bearing.

关 键 词：强化研磨 磨料配比 SEM扫描 油囊 

分 类 号：TG739[金属学及工艺—刀具与模具] TH16[机械工程—机械制造及自动化]