颗粒增强钛基复合材料高速磨削表面分形分析  

Fractal analysis on high-speed grinding surface of particle-reinforced titanium matrix composites

作　　者：奚欣欣 丁文锋[1] 傅玉灿[1] 赵盟月[2] 李学文[2] 

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]郑州磨料磨具磨削研究所有限公司,郑州450001

出　　处：《金刚石与磨料磨具工程》2014年第6期26-29,33,共5页Diamond & Abrasives Engineering

基　　金：南京航空航天大学研究生创新基地(实验室)开放基金(No.kfjj201433);中央高校基本科研业务费专项资金(No.NS2013051);国家科技重大专项课题(2012ZX04003-081)

摘　　要：开展了颗粒增强钛基复合材料高速磨削实验,分析了平面微小区域的分形维数,进而对磨削表面形貌进行了评价。结果显示,磨削速度对磨削表面微观形貌具有一定影响。三种磨削速度条件下(80、120、150m/s)所对应的磨削平面微小区域分形维数分别为2.004 30、2.005 56、2.006 52,与磨削速度呈线性关系,表明了应用表面微小区域分形维数评价磨削表面质量的可行性。High-speed grinding experiments were carried out on particle-reinforced titanium matrix composites.The fractal dimension of the planar micro region within the machined surface was calculated to evaluate the surface quality of the ground samples.The result revealed that the wheel speed had some influences on the ground surface quality.Different wheel speed （i.e.,80 m/s,120 m/s,150 m/s） corresponded to the different fractal dimension values of the planar micro region（i.e., 2.004 30,2.005 56,2.006 52） respectively.A linear relationship has been established between the fractal dimension and the wheel speed in grinding.It was confirmed that the method could evaluate the surface quality of the ground samples by means of the fractal dimension of the planar micro region.

关 键 词：分形 磨削 钛基复合材料 平面微小区域 

分 类 号：TG58[金属学及工艺—金属切削加工及机床]