激光熔覆30CrMnSi

Laser Cladding Research on 30CrMnSi

为提高30CrMnSi钢的显微硬度,采用激光熔覆技术对其进行表面处理,分析了熔覆层的微观组织,测试了熔覆层的显微硬度。研究结果表明,在激光功率为450W,扫描速度为6mm/s时,可以获得比基体组织晶粒更致密细小的熔覆层,熔覆层最高硬度达1030HV,约是基体硬度的4～5倍。

In this paper, laser cladding technology is used on the surface of 30CrMnSi steel for increasing the micro-hard- ness of it. The microstructure of the laser cladding lays has been analyzed and the micro-hardness has been tested. The result indicated that when the laser power is 450W, scanning velocity is 6mm/s, the laser cladding lays whose crystal grain more tinier than that of substrate can be obtained, and the highest degree of micro-hardness is 1030HV, this is 4-5 times of the substrate＇s.