单颗钎焊金刚石磨粒磨损试验研究  

Wear experiment of single brazed diamond abrasive

作　　者：黄武[1] 苏宏华[1] 张昆[1] 徐九华[1] 

机构地区：[1]南京航空航天大学机电学院,南京210016

出　　处：《金刚石与磨料磨具工程》2016年第2期15-18,共4页Diamond & Abrasives Engineering

基　　金：国家自然科学基金(No.51275231)

摘　　要：采用单颗磨粒试验方法,以碳钢碟轮为修整工具,研究金刚石和CBN磨粒修整过程中的磨损特征。结果表明:砂轮和修整碟轮的相对速度对金刚石磨粒的磨损有重要影响;相对速度为51.9 m/s时,金刚石磨粒的磨损高度为50.1μm;相对速度为17.3 m/s时,金刚石磨粒的磨损高度显著减小,为19.5μm。通过相同条件下金刚石与CBN磨粒的磨损特征对比,表明金刚石磨粒在磨损过程中同碟轮之间发生化学作用,加速金刚石磨粒的磨损;对试验后金刚石磨粒进行拉曼光谱分析,并未检测到石墨物质。The wear characteristics of diamond and CBN grit are studied using single grit test with carbon steel plate wheel as dressing tools.The results show that the relative velocity of grinding wheel to dressing wheel has an important effect on wear of diamond grits.The abrasive wear reaches 50.1 μm when the relative velocity is 5 1.9 m∕s,and decreases to 1 9.5 μm as the relative velocity is 17.3 m∕s. After comparing grit wear characteristics of diamond and CBN,it can be concluded that chemical interaction between diamond grits and dressing wheel occurrs in the process of diamond grits wear, which accelerates the wear of diamond grits.Graphite material is not detected on the dressed grit using Raman spectra analysis.

关 键 词：单层金刚石砂轮 碟轮修整 CBN 拉曼光谱 

分 类 号：TQ164[化学工程—高温制品工业] TG74[金属学及工艺—刀具与模具]