摘要
采用调Q灯泵浦YAG激光器,对模具钢试件表面进行了不同尺寸和分布的微凸体形貌激光毛化加工.在UMT-Ⅱ型多功能摩擦磨损试验机上,进行了模具钢试件不同激光毛化表面形貌之间以及与光滑模具钢试件的摩擦磨损性能对比试验研究.结果表明:在模拟冷冲拉延模具低速重载的工况条件下,不同激光毛化微凸体形貌模具钢在摩擦系数和体积磨损量存在一定的差异,且与未毛化模具钢试样相比,其摩擦系数变大,体积磨损量减小.随着微凸体直径、间距的增大,模具钢表面摩擦系数相应减小,体积磨损量亦逐渐减小.说明激光毛化技术可用于优化模具复杂型面的摩擦特性.
Using a Q switched light - pumped Nd different sizes and distribution of micro - convex. ： YAG laser, die steel were The friction and wear of die processed to obtain surfaces with steel samples of different surface textures by laser texturing as well as the smooth die steel specimen were comparatively investigated on a UMT- Ⅱ tribometer. Results showed that the friction coefficient and wear volume varied according to the texture of specimens. Compared with unstructured samples, friction coefficient was higher while wear volume was lower under a low speed and heavy pressure conditions to simulate drawing die. With the increasing of the diameter and interspacing of micro - convexes, friction coefficient and wear volume of die steel decreased slowly. The laser - textured specimen showed better friction and wear characteristics than that of smooth specimen.
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2009年第5期475-480,共6页
Tribology
基金
国家自然科学基金资助项目(50475122)
江苏省高技术重大项目资助(BG2007023)
江苏省"六大人才高峰"项目(08-B-04)
兵总创新基金项目
关键词
激光毛化
微凸体
模具钢
摩擦磨损性能
laser texturing, micro - convex, die steel, friction and wear properties
作者简介
作者简介：符永宏（1965-），博士，教授，博士生导师，主要从事润滑及激光应用技术研究．联系人：符永宏，e—mail：fyh@ujs．edu．cn
