激光参数对硬质合金表面微织构几何结构影响规律研究  

Research of Effect of Laser Parameters on Geometric Structure of MicroWeaving Grooves on Cemented Carbide Surface

作　　者：杨绪刚 祝锡晶 李婧 Yang Xugang;Zhu Xijing;Li Jing

机构地区：[1]中北大学机械工程学院,太原市030000 [2]山西省先进制造技术重点实验室

出　　处：《工具技术》2024年第5期32-37,共6页Tool Engineering

基　　金：国家自然科学基金(51975540);山西省自然科学青年基金(202203021222041);山西省先进制造技术重点实验室2022年度开放基金项目(XJZZ202202)。

摘　　要：为揭示激光加工参数对硬质合金表面微织构结构参数的影响规律,采用纳秒激光器在YG8硬质合金表面制备槽形微织构,研究不同激光参数下硬质合金表面微织构凹槽宽度和深度变化规律,并进行了正交试验及二次响应曲面分析。分析结果表明:凹槽深度和宽度随激光参数变化的规律一致,都随激光功率和扫描次数的增加而变大,随扫描频率和扫描速度的增加而减小。四个激光参数中,扫描功率对凹槽宽度影响最大,其次是扫描频率和扫描速度,对凹槽宽度影响最小的因素是扫描次数;对凹槽深度影响最大的是扫描次数,其次是扫描频率和扫描功率,对凹槽深度影响最小的因素是扫描速度。In order to reveal the influence of laser processing parameters on the structural parameters of microtextured structures on the surface of cemented carbide,a nanosecond laser is used to prepare grooved microtextured structures on the surface of YG8 cemented carbide,and to study the changing law of the width and depth of the grooves of microtextured structures processed on the surface of cemented carbide under different laser parameters.Orthogonal tests and quadratic response surface analysis are carried out.The analysis results show that:the change laws of grooves depth and width on the laser parameters are the same,both grooves depth and width increase with the increasing of laser power and number of scanning times,while they decrease with the increasing of scanning frequency and scanning speed.Among the four laser parameters,the scanning power has the greatest influence on the width of the notch,followed by the scanning frequency,then the scanning speed,and the number of scans has the least influence on the width of the notch,the greatest influence on the depth of the notch is the number of scans,followed by the scanning frequency,then the scanning power,and the scanning speed has the least influence on the depth of the notch.

关 键 词：微织构 激光参数 结构参数 正交试验 

分 类 号：TG665[金属学及工艺—金属切削加工及机床] TH16[机械工程—机械制造及自动化]