65Mn表面熔覆硬质合金工艺及其性能

采用氩弧焊，将Co、WC、TiC混合后的粉末熔覆于65Mn钢，之后进行熔覆层的硬度和耐磨性测试，并用光学显微镜与扫描电镜观察样品的显微组织结构。结果表明，硬质相WC、TiC等分散于粘结相Co中，熔覆后提高了样品的耐磨性与硬度。 

Process and Property of 65Mn Surface Cladding Cemented Carbide

Co，WC and TiC powder were prepared on the surface of 65Mn steel which was commonly used in agricultural machinery parts by means of argon arc cladding technique.Micro-hardness and wear resistance of cladding were tested by micro-hardness instrument and abrasive wear testing machine.Microstructures of cladding were investigated by means of optical microscopy，scanning electron microscopy. Results indicated that the hard phase WC，TiC and others scatter in soft phase Co，it made better resistance to abrasive cutting hard phase，improve the wear resistance and hardness finally.