YANG Ke
,
ZHANG Zhi-xi
,
HU Wang-qin
,
BAO Ye-feng
,
JIANG Yong-feng
钢铁研究学报(英文版)
It is expected that the welding hardfacing of continuous casting rolls has better welding performance and higher wear resistance. A new type of submerged-arc hardfacing flux-cored wire has been developed through nitrogen replacing part of carbon and addition of the nitrogen-fixing elements of niobium and titanium. And microstructure, degree of hardness and high-temperature wear resistance of its deposited metal samples were also investigated. It is found that the microstructure is martensite, residual austenite and carbonitride precipitates. As a result, the hardfacing metal with homogeneous distribution of very fine carbonitride particles had high hardness and excellent wear-resisting property during high-temperature wear, which could significantly extend the service life of continuous casting rolls.
关键词:
submerged-arc flux-cored wire
,
hardfacing
,
high-temperature wear resistance
,
continuous casting roll
