LF炉冶炼低硅钢氮含量控制实践  

Practice of nitrogen content control in LF furnace smelting low silicon steel

作　　者：朱学谨 ZHU Xuejin(HBIS Chengsteel,Production Planning,Chengde 067000,Hebei,China)

机构地区：[1]河钢承钢生产计划部,河北承德067000

出　　处：《四川冶金》2020年第1期20-24,共5页Sichuan Metallurgy

摘　　要：通过对转炉终点控制工艺和LF精炼埋弧、加热、吹氩、喂线、窄成分控制等工艺参数的优化,取得了比较好的控氮效果,优化后,LF出站钢水平均增氮量由优化前的16.8 ppm降至9.6 ppm,降幅42.86%,钢坯氮合格率由优化前的35%提高至97%,效果十分显著。Through the optimization of the end-point control process of converter and the process parameters of submerged arc,heating,argon blowing,wire feeding and narrow composition control of LF refining,the better nitrogen control effect has been achieved.After optimization,the average nitrogen increment of LF outbound molten steel decreased from 16.8ppm before optimization to 9.6ppm,with a decrease of 42.86%,and the qualified rate of billet nitrogen increased from 35% before optimization to 97%.The effect is very significant.

关 键 词：LF炉 低硅钢 控氮实践 

分 类 号：TF769[冶金工程—钢铁冶金]