A3、45钢堆焊层金属显微组织及性能研究

Microstructure and Performance of Surfacing Welding Layer Metal of A3 and 45 Steel

借助手工电弧焊方法,使用CHR系列堆焊焊条对A3、45钢进行堆焊加工,分析了其堆焊层金属的显微组织及性能。结果表明,堆焊层金属的显微组织和硬度与焊条的种类及堆焊工艺参数有关,并且也与硬质相的类型、性能、数量及分布有关。

With SMAW method, the surfaces of A3 and 45 steel were welded by using the series of CHR electrode, and the microstructure and performance of surfacing welding layer metal were analyzed. The results show that the microstructure and hardness of surfacing welding layer metal are influenced not only by the kind of electrode and welding procedure parameters, but also by the type, performance, quantity and distribution of hardening phase.