The microstructure and wear resistance of the overlaying welding metal of two new types of hardfacing flux-cored wire HDY704 and HDY502 were studied.

• 对研制的两种硬面药芯焊丝HDY704、HDY502焊态和焊后热处理堆焊层金属的显微组织及耐磨性能进行了研究,探讨了堆焊层金属的磨损机理。