北京科技大学学报2012，Vol.34Issue(11)：1256-1261,6.
不同脱氧方式对钢中夹杂物的影响
Effect of deoxidation methods on inclusions in steel
摘要
Abstract
In order to control the nitrogen content of liquid steel,two different deoxidation methods were applied:(Ⅰ) Al blocks were added for deoxidation when tapping;(Ⅱ) Si-Mn alloys without Al were added for deoxidation at first when tapping,and then Al wires were fed at the LF station.The oxygen content,nitrogen content and inclusions in steel deoxidized by the two methods were analyzed by gas analyzer and scanning electron microscopy(SEM).It is found that the total oxygen content of the final product is almost the same with the two deoxidation methods,while the method(Ⅱ) is more advantageous to control the nitrogen content and by using the deoxidation method the nitrogen content can decrease by about 5×10^-6.Both the deoxidation methods affect little the type and size of inclusions in the final product,and most of the inclusions are globular CaS and CaO-MgO-Al2O3 inclusions.The formation process of inclusions during Si-Mn deoxidation was inferred according to SEM observations and thermodynamics.关键词
炼钢/脱氧/夹杂物/氮/热力学Key words
steelmaking/deoxidation/inclusions/nitrogen/thermodynamics分类
矿业与冶金引用本文复制引用
邓志银,朱苗勇,钟保军,高新亮..不同脱氧方式对钢中夹杂物的影响[J].北京科技大学学报,2012,34(11):1256-1261,6.基金项目
教育部基本科研业务费专项 （）
