摘要
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。
Ni60 self-fluxed alloy powder was coated on the surface of Q235 steel plate by ultrasonic-assisted argon-arc clad injection technology, then TiC, TiN and Co powder were sprayed by the modificated injection device, and at the same time the powder was vibrated by the ultrasonic-assisted vibration device self-designed. The results show that through the innovative technology, the wettability and dispersity of the reinforced phase are ameliorated, including the elements diffusion and binding strength of the cladding layer with the matrix. The microhardness of the composite coating is 1.1 times than that of the coating without ultrasonic assisted, and then 6 times than Q235 as the matrix. The wear resistance of the composite coating is 14.4 times than Q235, and 1.5 times than that of the coating without ultrasonic assisted. So the composite coating with good combination, high strength and high wear resistance is obtained by new technology.
出处
《热加工工艺》
CSCD
北大核心
2015年第12期146-149,共4页
Hot Working Technology
基金
江苏省高等学校大学生实践创新训练计划项目(20141199-8054Y)
江苏省大型工程装备检测与控制重点建设实验室开放课题(JSKLEDC201308)
江苏省前瞻性产学研联合创新资助项目(BY2013022)
2014年江苏省高校“青蓝工程”资助(2014)
徐州市一般科技计划项目(C14GX100)
