微合金钢钛氮比控制实践  

Practice of Controlling Ratio of Ti to N in Micro-alloyed Steel

作　　者：吕志勇[1] 张立夫[1] 周刘建 邢维义 方恩俊[1] Lv Zhiyong;Zhang Lifu;Zhou Liujian;Xing Weiyi;Fang Enjun(Bayuquan Branch of Angang Steel Co.,Ltd.,Yingkou 115007,Liaoning,China)

机构地区：[1]鞍钢股份有限公司鲅鱼圈钢铁分公司

出　　处：《鞍钢技术》2019年第6期48-51,55,共5页Angang Technology

摘　　要：针对微合金钢钛氮比不理想影响钢水质量的问题,分析了影响钢水钛、氮含量的原因,采取了优化工艺路线、优化增钛时机、分步增氮等措施后,将钢水钛氮比稳定控制在2.4~3.4,钢水成分合格率由81%提高到100%,达到了钢水的成分控制要求。In allusion to the problem that the undesirable ratio of Ti to N in micro-alloyed steel impaired the quality of molten steel,the causes of influencing content of Ti and N in molten steel were analyzed.And then such measures as optimizing the process flow,optimizing the time for increasing content of Ti and increasing content of N step by step were taken so that the ratio of Ti to N was stably controlled in the range from 2.4 to 3.4,and therefore the pass percent of molten steel was increased to 100%from 81%,which could meet the requirements asked by specifications on elements in molten steel.

关 键 词：微合金钢 钛氮比 钛含量 氮含量 

分 类 号：TF777[冶金工程—钢铁冶金]