论文部分内容阅读
以超声波辅助氩弧熔覆-注射技术为基础,在Q235钢板的表面涂覆Ni60自熔性合金粉末,以氩弧为热源在压制成型的粉末表面形成熔池,利用改装后的喷射装置喷射TiC、TiN和Co粉末,同时利用自行设计的超声波辅助振动装置对熔池进行振动。结果表明:采用此创新工艺制备的耐磨复合涂层,熔覆层内增强相的润湿性和分散性得到改善,提高了熔覆层与基体的元素扩散和结合强度。复合涂层的显微硬度是未经超声辅助涂层的1.1倍,更比基体Q235提高了6倍。涂层的耐磨性是Q235的14.4倍,是未经超声振动涂层的1.5倍。采用此新工艺获得了结合优良、高强度、高耐磨的复合涂层。
Based on the ultrasonic assisted argon arc cladding-injection technique, Ni60 self-fluxing alloy powder is coated on the surface of Q235 steel plate, a molten pool is formed on the surface of the pressed powder by using argon arc as a heat source, TiC , TiN and Co powder, while using their own design of ultrasonic-assisted vibration device to vibrate the weld pool. The results show that the wear resistance of composite coating prepared by this innovative process improves the wettability and dispersion of the reinforcing phase in the cladding layer and improves the elemental diffusion and bonding strength of the cladding layer and matrix. The microhardness of the composite coating is 1.1 times that of the non-ultrasonic assisted coating and more than 6 times higher than the Q235 matrix. The abrasion resistance of the coating is 14.4 times that of Q235, which is 1.5 times that of ultrasonic vibration coating. Adopting this new process, a composite coating combining excellent, high strength and high wear resistance has been obtained.