摘要
用金刚石砂轮磨削氮化硅陶瓷材料时,后者容易产生表面破碎损伤。为检测和控制这种损伤,进行了不同工艺参数条件下的氮化硅陶瓷材料球面磨削实验,利用光学显微镜对磨削后的表面进行观察和分析,并获得磨削表面图片。采用表面破碎率衡量球面磨削表面的损伤程度,通过MATLAB软件对磨削后的表面形貌图进行分析及计算,并得出结论:表面破碎率随砂轮粒度的增大而减小,随磨削深度的增大而增大,随砂轮线速度和砂轮进给速率的增大而保持稳定。
Silicon nitride ceramics ground with diamond wheels are prone to produce surface crackings.To test and control such crackings,spherical grinding experiments on silicon nitride ceramics under different processing parameters have been implemented.Ground surface is analyzed by optical microscope for its surface cracking rate,which is used to evaluate the damage level of ground surface.Then MATLAB software is applied to processing the pictures by optical microscope.The results are as follows: the surface cracking rate decreases with the decrease of diamond grain size,and increases with the increase of grinding depth.But it maintains stable as linear velocity or feed rate of grinding wheel increases.
出处
《金刚石与磨料磨具工程》
CAS
2013年第1期70-74,共5页
Diamond & Abrasives Engineering
关键词
氮化硅陶瓷
球面磨削
图像处理
表面破碎率
silicon nitride ceramic
spherical grinding
image processing
surface cracking rate
