摘要
在氧化锆陶瓷磨削中为获得较高质量表面,采用单因素试验研究磨削深度、砂轮线速度、工件进给速度对氧化锆陶瓷精密磨削表面质量的影响规律及材料去除机理,通过超景深三维显微镜以及扫描电子显微镜,观察氧化锆陶瓷试件磨削后的表面形貌,最后用正交试验法进行优选并验证。结果表明:磨削表面的粗糙度随磨削深度、工件进给速度增大而增大,随砂轮线速度增大先减小、后增大。在磨削深度5μm、砂轮线速度40 m/s、工件进给速度1000 mm/min的优化组合条件下,磨削3组氧化锆陶瓷的平均表面粗糙度R a为0.3889、0.4170和0.4037μm。
To obtain a high quality surface in the grinding of zirconia ceramics,single factor experiments were used to study the effects of grinding depth,grinding wheel linear speed and workpiece feed speed on the surface quality of zirconia ceramics in precision grinding and its material removal mechanism.The surface morphology of the ground samples was observed by ultra field depth three-dimensional microscope and scanning electron microscope.Orthogonal experimental carried out to optimize the grinding parameters and verify them.Results show that the grinding surface roughness increases with the increase of grinding depth and workpiece feed speed.The grinding surface roughness first decreases and then increases with the increase of grinding wheel linear speed.The optimal combination is grinding depth of 5μm,grinding wheel linear speed of 40 m/s and workpiece feed speed of 1000 mm/min.Under the optimum grinding conditions,the average roughness of surface R a is 0.3889μm,0.4170μm and 0.4037μm in the three groups of zirconia ceramics grinding experiments.
作者
李颂华
韩光田
孙健
陈文征
王科冲
LI Songhua;HAN Guangtian;SUN Jian;CHEN Wenzheng;WANG Kechong(School of Mechanical Engineering,Shenyang Jianzhu University,Shenyang 110168,China;National-Local Joint Engineering Laboratory of NC Machining Equipment and Technology of High-Grade Stone,Shenyang Jianzhu University,Shenyang 110168,China)
出处
《金刚石与磨料磨具工程》
CAS
北大核心
2019年第6期75-81,共7页
Diamond & Abrasives Engineering
基金
国家自然科学基金项目(51975388)
辽宁省自然科学基金(2019–MS–266)
辽宁省百千万人才工程资助计划(2018921009)
沈阳市“双百工程”计划(Z18–5–023)
关键词
氧化锆
接触弧长
表面纹理
表面缺陷
zirconia
contact arc length
surface texture
surface defects
