激光熔覆技术应用于轴类零件表面修复的实验研究  

An Experimental Study of Laser Cladding Technology Applied for Axle Surface Repair

作　　者：李宝灵[1] 温宗胤[1] 刘旭红[1] 翁波[1] 

机构地区：[1]广西工学院机械工程系,广西柳州545006

出　　处：《应用激光》2007年第4期290-294,共5页Applied Laser

基　　金：广西区自然科学基金项目(桂科自0481026);广西工学院科研基金项目(院科05006)

摘　　要：本文通过两种铁基合金粉末对45号钢调质态棒料,用宽带(矩形光斑)激光光束,以不同的工艺参数,按同步供料法分别进行激光熔覆修复实验;并对实验结果进行分析比较,选出最佳工艺参数及熔覆层数;研究熔覆层和基材的冶金结合程度;分析在一定送粉率下,激光熔覆工艺参数的改变,熔覆层质量和显微组织变化情况;使之为工业应用奠定基础。The study of this paper selects two kinds of iron base alloy powder respectively to do a laser cladding and repairing experiment on the surface of queching and tempering 45 steel bar, that uses broadband （rectangular facula） laser beam, with the different technological parameters by synchronous delivering powder method. Experimental results are compared, then the optimum technological parameters and the layer of cladding are chosen. Metallurgy combining degree of the laser cladding layer and the base material is studied. The change of the laser cladding layer quality and mierostructure are analyzed on certain rate of the powder feeding with the change of the laser cladding technological parameters. Thus establishs a base for industrial applications.

关 键 词：激光熔覆 表面修复 轴零件 铁基合金 

分 类 号：TG174.4[金属学及工艺—金属表面处理]