含氮钢吹氮合金化  

Nitrogen Alloying of Steels Containing Nitrogen by Gas Injection

作　　者：刘守平[1] 孙善长[1] 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044

出　　处：《重庆大学学报（自然科学版）》2002年第5期83-85,92,共4页Journal of Chongqing University

摘　　要：氮在阀门钢、部分不锈钢中是重要的合金元素。在这些含氮钢的冶炼过程中利用氮气作合金剂对钢液进行合金化 ,可明显降低冶炼成本 ,是含氮钢冶炼的一项新技术。在理论分析计算含氮钢吹氮气增氮的热力学和动力学条件的基础上 ,试验研究了 10kg感应炉内阀门钢、不锈钢、高锰钢粗钢液顶吹氮合金化的效果 ,结果表明 :对阀门钢、不锈钢等 ,向钢液顶吹氮 2 7～ 4 0min ,可使钢液中氮含量增至其规格成分范围内 ,但要采取措施防止氮在钢液浇注、凝固等过程中逸出。Nitrogen is an important alloy element in valve steel and stainless steel. Nitrogen alloying of valve steel and stainless steel by gas injection is an new technique ,it can reduce the production cost . The thermodynamics and kinetics on the nitrogen absorption by liquid steel are studied, nitrogen gas injection trials have been carried out in 10 kg induction furnace in this paper.When the nitrogen gas top injection time is 27～40 minute, the in valve steel and stainless steel can be picked up to the content that the steels standard required, but measures must be taken to avoid the evolution during the process of liquit steel solidification.

关 键 词：含氮钢 吹氮 氮合金化 

分 类 号：TF704.2[冶金工程—钢铁冶金]