碳钢表面激光熔覆WC-TiC-SiC-Co的研究

Study of laser smelting-cladding WC-TiC-SiC-Co on carbon steel surface

摘要: 本文介绍了在20用表面利用大功率CO2激光束熔覆WC-TiC-SiC-Co的研究,对熔覆层进行了物相分析,用扫描电镜观察并分析了处理后样品的显微组织,对熔覆层的硬度分布和耐磨性能进行了测试,同时对熔覆层形成的机理作了初步的讨论,结果表明:利用大功率激光束可在低质钢材表面熔覆WC-TiC-SiC-Co,它是提高全属材料表面性能的优异方法。

Abstract: This paper presents the experimental research of smelting-cladding WC-TiC-SiC-Co on 20# steel surface by using a high power CO2 laser.The physic phases analysis of the treated cladding layer are made. A scanning electronic microscope is used to observe the microstructure at the different scanning speed, and the hardness and anti-abrasion are tested. The formation mechanism of the laser smelting-cladding layer is discussed.The experimental results indicate that the WC-TiC-SiC-Co cladding layer on low carbon steel surface greatly improves the mechanical performance of the steel surface.