摘要
8 000 W大功率半导体激光器得到了工业化应用,熔覆加工效率得到显著提升。为了明确激光熔覆效率提升后的熔覆效果,采用8 000 W及3 000 W半导体激光器,通过粉末预置法在27SiMn钢材质上进行了4种激光熔覆工艺试验。取样检测并分析了不同功率密度下激光熔覆样品的性能。结果表明,工艺参数选择不当可使界面结合不良,同时影响试样耐腐蚀性能;熔覆功率越高,熔覆试样硬度越高;熔池吸收的有效功率密度越大,作用时间越长,则热影响区组织越粗大。
The 8 000 W high power semiconductor laser is applied, and the efficiency of cladding has been greatly im-proved. In order to make sure the effect of laser cladding efficiency, four kinds of laser cladding process experiments are car-ried out on 278iMn steel by 8 000 W and 3 000 W semiconductor laser. And the property of laser clad samples is tested andanalyzed under different power densities. The results show that, improper process parameters can make the interface poor,and at the same time affect the corrosion resistance of the sample. The higher the cladding power, the higher the hardness ofcladding layer. The greater the effective power density and acting time, the bulkier the structure of the heat affected zone.
出处
《新技术新工艺》
2016年第12期57-59,共3页
New Technology & New Process
关键词
激光熔覆
功率密度
熔覆层性能
laser cladding, power density, property of the cladding layer
