激光毛化表面的摩擦学性能实验研究

中国机械工程 ›› 2011, Vol. 22 ›› Issue (19): 2269-2274.

激光毛化表面的摩擦学性能实验研究

符永宏;施余峰;华希俊;孙东成;张宗涛

江苏大学,镇江,212013

出版日期:2011-10-10 发布日期:2011-10-12
基金资助:
江苏省科技支撑计划资助项目(SBE201000390)；中国兵器装备集团公司技术创新资金资助项目(Q10090561)；江苏省六大人才高峰计划资助项目(08-B-04)；江苏省高校自然科学研究计划资助项目(07KJD460035)；教育部留学回国人员科研启动基金资助项目(2007-1108)
Jiangsu Provincial Key Technology R&D Program（No. SBE201000390）;

Jiangsu Provincial Natural Science Research Program of Higher Education of China（No. 07KJD460035）;
Scientific Research Starting Foundation for Returned Overseas Chinese Scholars （No. 2007-1108）

Study on Tribological Performances of Laser Textured Surfaces

Fu Yonghong;Shi Yufeng;Hua Xijun;Sun Dongcheng;Zhang Zongtao

Jiangsu University,Zhenjiang,Jiangsu, 212013

Online:2011-10-10 Published:2011-10-12
Supported by:

Jiangsu Provincial Key Technology R&D Program（No. SBE201000390）;

Jiangsu Provincial Natural Science Research Program of Higher Education of China（No. 07KJD460035）;
Scientific Research Starting Foundation for Returned Overseas Chinese Scholars （No. 2007-1108）

摘要/Abstract

摘要：

采用优化的激光工艺参数和相应辅助工艺措施,利用调Q灯泵浦Nd：YAG激光器加工出不同几何尺寸和分布的球冠状激光毛化形貌。在UMT-Ⅱ型多功能摩擦磨损试验机上进行了不同尺寸和分布的激光毛化形貌与光滑试样表面的摩擦学对比实验研究。研究结果表明：在三种工况下,激光毛化试样的摩擦因数明显大于光滑试样的摩擦因数,其中,在高速轻载工况下,微凸体间距为1300μm的试样比光滑试样的摩擦因数大2.25倍;摩擦因数随着激光毛化形貌微凸体间距的减小而增大,间距为1300μm时摩擦因数最大,达到0.1192;摩擦因数与激光毛化微凸体直径成反比关系,而与微凸体的高度成正比关系;随着速度的不断增大,激光毛化表面动压效应增强,摩擦因数随之减小。

关键词:

激光毛化, 微凸体, 球冠状, 摩擦因数

Abstract:

Using optimized laser processing parameters and the corresponding auxiliary craft measures, die steel samples were textured by a Q switched ling - pumped Nd：YAG laser in the form of slight protuberance similitude of spherical cap with different sizes and distribution of micro-convex. The tribological properties of laser surface textured die steel samples as well as untextured die steel specimen were comparatively investigated on a UMT-Ⅱ trib-meter. Results show that the friction coefficient of laser surface textured samples is obvious larger than that of untextured specimen. It is found that the friction of textured sample with 1300μm span is about 2.25 times over that of an untextured sample. The tribological friction increases with the decrease of span among the micro-convexes. The maximum friction is 0.1192 when the span is 1300μm. The tribological friction is inversely proportional to the diameter of micro-convex but directly proportional to the diameter of micro-convex. The friction decreases with the increase of speed, that is because the hydrodynamic effect increase with the speed increase.

Key words:

laser texturing, micro-convex, spherical cap, friction coefficient

中图分类号:

TH117.1

符永宏, 施余峰, 华希俊, 孙东成, 张宗涛.

激光毛化表面的摩擦学性能实验研究

[J]. 中国机械工程, 2011, 22(19): 2269-2274.

FU Yong-Hong, SHI Tu-Feng, HUA Xi-Dun, SUN Dong-Cheng, ZHANG Zong-Chao.

Study on Tribological Performances of Laser Textured Surfaces

[J]. China Mechanical Engineering, 2011, 22(19): 2269-2274.

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