高硼钢中夹杂物形成热力学及实验研究  

Thermodynamic and Experimental Research of Inclusions Formation in High Boron Steel

作　　者：赵定国 马海涛 王书桓 崔小杰 

机构地区：[1]华北理工大学冶金与能源学院,唐山063009

出　　处：《科学技术与工程》2016年第13期162-167,共6页Science Technology and Engineering

基　　金：河北省自然科学基金(E2013209113);国家自然科学基金(51304060)资助

摘　　要：高硼钢冶炼过程中,洁净度的控制是提高冶炼质量的重要环节。分析了高硼钢熔体中氧化物和氮化物等夹杂物的形成条件。计算结果表明,硅的脱氧能力要强于硼,冶炼温度越低,氧含量越少;硼的脱氮能力要强于硅,同样冶炼温度越低,氮含量越少。通过高温实验,制备了高硼钢样品。夹杂物检测结果表明,1-4μm的夹杂物占总量的37%;4-8μm的夹杂物占总量的55%;大于8μm的夹杂物占总量的8%,主要是硅酸盐类夹杂,渣洗吸收了大部分夹杂物。探讨了提高高硼钢洁净度的方法,对实际冶炼高硼钢具有重要指导意义。The control of the cleanliness is very important to improve the quality of smelting in High boron steel smelting process. The formation of the oxide and nitride inclusions in the melting high boron steel are analyzed in this paper,the calculation results show that deoxidization ability of Silicon is stronger than boron,the lower smelting temperature,the less oxygen content; denitrogenation ability of boron is stronger than silicon,similarly,the lower smelting temperature,the less nitrogen content. Samples of high boron steel were prepared in the experiment.Inclusion test results show that 1 - 4 μm inclusions accounted for 37% of the total inclusions; 4 - 8 μm inclusions accounted for 55% of the total inclusions; larger than 8 μm inclusions accounted for 8% of the total inclusions.These are mainly silicate inclusions,most of which can be absorbed by slag washing. This paper discusses the methods of improving high boron steel cleanliness,which has important guiding significance to the practical smelting high boron steel.

关 键 词：高硼钢 夹杂物 尺寸 

分 类 号：TF19[冶金工程—冶金物理化学]