LF工艺下40Mn2钢的洁净度分析  

Analysis of 40Mn2 Steel Cleanliness in LF Procedure

作　　者：李慧蓉 孙立根 李运刚 

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063000

出　　处：《铸造技术》2017年第6期1416-1418,1421,共4页Foundry Technology

摘　　要：某钢厂采用转炉→LF精炼→连铸工艺生产40Mn2钢,但钢液洁净度并未达到预期水平。本研究通过示踪剂试验,系统分析了各工序中钢的氧氮含量和显微夹杂物水平。结果表明:尽管LF精炼起到了较好的夹杂物控制作用,但整个流程钢液二次氧化和卷渣较为严重,而这也是钢液洁净度的主要影响因素。Aimed at the problem of unqualified cleanliness of 40Mn2 steel produced by LD→LF→CC procedure in a steel plant, the tracer experiment was used to research the T [O], N and micro inclusions content in 40Mn2. The results show that, although LF procedure has well controlling effect on inclusions, the secondary oxidation of steel and the slag entrapment are very serious in whole procedure, and they are the main reasons for unqualified cleanliness in steel.

关 键 词：40Mn2 LF工艺 钢液洁净度 显微夹杂物 

分 类 号：TF769.2[冶金工程—钢铁冶金]