摘要
以磨损失效扁平链为研究对象,采用铁基合金粉末对基体进行了激光熔覆试验,在不同的熔覆工艺参数下,进行了金相组织、显微硬度和耐磨性分析。结果表明,激光功率1600 W、扫描速度600 mm·min-1、送粉率4.0rad·min-1、熔覆层数3的组合为最优工艺参数组合。在此工艺参数组合下,熔覆层与基体形成良好的冶金结合,无气孔等缺陷,且硬度和耐磨性均优于基体的。
With a flat chain with the wear failure as the research object, the experiment of laser cladding for the matrix is carried out by using the Fe-based alloy powder. The metallographic structure, micro-hardness and wear resistance under different cladding process parameters are analyzed. The parameters with a laser power of 1600 W, a scanning speed of 600 mm. min-1, a feeding rate of 4.0 rad. min-1 and a cladding layer number of 3 are the optimal process parameter set. Under this parameter set, the cladding layer has a good metallurgical bonding with its matrix , has no pores and other flaws, and has the hardness and wear resistance which are better than those of the matrix.
作者
翟建华
张菀麟
许慧印
刘志杰
杨东山
Zhai Jianhua;Zhang Wanlin;Xu Huiyin;Liu Zhijie;Yang Dongshan(Mechanical Engineering College, Liaoning Technical University, Fuxin, Liaoning 2 Institute of Advanced Manufacturing Technology, Liaoning Technical University, Fuxin, Dongshan~ 123000, China;Liaoning 123000, China)
出处
《激光与光电子学进展》
CSCD
北大核心
2018年第4期257-262,共6页
Laser & Optoelectronics Progress
关键词
激光技术
扁平链
激光熔覆
显微组织
硬度
耐磨性
laser technique
flat chain
laser cladding
microstructure
hardness
wear resistance
