超高速激光熔覆研究现状及应用

超高速激光熔覆是一种新兴的表面处理技术。介绍超高速激光熔覆技术,综述国内外超高速激光熔覆技术的研究现状,目前研究热点包括熔覆工艺优化、组织性能产生机制以及过程模拟;列举了超高速激光熔覆技术在工业生产中的应用,主要包括替代硬铬电镀对大型液压缸表面进行修复、汽车制动盘涂层的制备以及快速金属增材制造。并基于目前的研究现状和应用对后续发展进行了展望,未来主要的研究热点将聚焦平面及自由曲面的超高速激光熔覆设备的研制、新型熔覆材料的研发、裂纹控制机制的探讨以及超高速激光熔覆技术结合增材制造的进一步研究。

Research Status and Application of Extreme High Speed Cladding

Extreme high speed cladding is a new surface treatment technology. The extreme high speed cladding technology was introduced. Its research status at home and abroad was summarized. At present, the research focused on the optimization of cladding process, the formation mechanism of microstructure and properties and process simulation. The applications of the extreme high speed cladding technology in industrial production were listed, it mainly included replacing hard chromium plating to repair the surface of large hydraulic cylinder, preparation of automobile brake disc coating and rapid metal additive manufacturing. Based on the current research status and application, the future development was prospected. In the future, the main research will focus on the development of extreme high speed cladding equipment for plane and free form surface, research and development of new cladding materials, discussion on crack control mechanism, and further research on extreme high speed cladding technology combined with additive manufacturing.