摘要
本文设计了一套加工装置,对氧化锆陶瓷板激光切割的熔化物颗粒进行收集,并采用Imagine-Pro Pluse(IPP)图像处理软件对熔化物颗粒的形态(数量、形状、平均直径、标准差及其分布情况)进行研究。通过气熔比控制方法,对板厚分别为0.8 mm、1 mm、1.5 mm、3 mm的氧化锆陶瓷板进行激光切割实验。实验结果表明:不同板厚参数下,球形熔化物颗粒所占百分比范围从99.21%降到89.81%,圆饼形从0.79%升至7.44%,哑铃形从0升至2.75%。随着板厚的增加,圆饼形和哑铃形颗粒所占百分比增大,球形颗粒所占百分比降低,球形颗粒平均直径和标准差随之增大,切面粗糙度由2.287μm增加到5.946μm。建立了熔化物去除几何模型,阐述了熔化物颗粒与切割质量的关系,球形颗粒所占的百分比越大,平均直径和标准差越小,切割质量越好,最终获得质量较高切割样件。
A set of processing device is designed to collect the melt particles during laser cutting zirconia ceramic. The melt particles morphology including quantity,shape,mean dimeter,standard deviation,and distribution are studied using the image processing software of Imagine-Pro Pluse（ IPP）. Various cutting experiments with different ceramic thicknesses（ 0. 8 mm,1. 0 mm,1. 5 mm and 3 mm） are taken based on controlling of vapor-to-melt ratio. Results of IPP observation show that,with the ceramic thickness increased,the percentage of spherical molten particles is declined from 99. 21% to 89. 81%,while the cakey and dumbbell shaped molten particles are ascended from 0. 79% to 7. 44% and 0 to 2. 75% respectively,and the mean and standard deviation of spherical melt particles diameter also are enlarged. Simultaneously,with the increasing of mean and standard deviation of spherical particle diameter,the roughness of kerf surface is deteriorated from2. 287 μm to 5. 946 μm. The establishment of geometric model reveals the connection between the form of removal molten particles and cutting quality. The larger the percentage of spherical molten particles,the smaller the mean diameter and standard deviation,and then the better the cutting quality. The high quality cuttingsheet is achieved finally.
作者
吴迪
王续跃
WU Di WANG Xu-yue(College of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China)
出处
《中国光学》
EI
CAS
CSCD
2016年第5期554-562,共9页
Chinese Optics
基金
国家自然科学基金资助项目(No.50975041
No.51375073
No.51321004)~~
关键词
激光切割
氧化锆陶瓷
熔化物颗粒
图像处理
laser cutting
zirconia ceramic
molten particles
image processing
