钢中异常氮的来源与控制  

Source of Abnormal Nitrogen in the Steel and the Countermeasures

作　　者：刘平[1] 何建中[2] 史凤武[1] 

机构地区：[1]包钢(集团)公司技术中心,内蒙古包头014010 [2]包钢(集团)公司规划发展部,内蒙古包头014010

出　　处：《包钢科技》2006年第S1期25-28,共4页Science & Technology of Baotou Steel

摘　　要：通过调查钢中含氮量异常增高的原因,从铁水开始,研究了炼钢生产过程中,入炉原材料的含氮量,复吹转炉的底吹工艺制度,LF炉精炼对钢水含氮量的影响。得出只有在钢包炉底吹过程中吹入氮气,才能使钢水的含氮量异常增高。按照这一结论,查出钢中异常氮含量是由转炉底吹系统中的氮气经连接阀反流到氩气管道中造成的。In order to study the cause of abnormal nitrogen content in the steel,the paper investigates the nitrogen content in the raw material used for the steel-making and the influence factors on the nitrogen content in the process system of bottom blowing and the LF refining process.The result shows only to blow nitrogen into the ladle from the bottom,the nitrogen content of the steel increases.According to the conclution,why the nitrogen content of the steel is specially high is that nitrogen is blowed into LF t...

关 键 词：钢中氮 来源 控制 

分 类 号：TF729[冶金工程—钢铁冶金]