摘要
通过热力学计算及实验室研究,对钙处理前后50W600无取向硅钢退火冷轧板中夹杂物的类型、数量及尺寸进行了系统分析。结果表明,50W600无取向硅钢经钙处理后(w(Ca)=0.002 6%),钙在1 600℃的钢液中主要以固态的CaO·2Al2O3、CaO·6Al2O3及溶解钙的形式存在。在钢液的凝固过程中,钢中的溶解钙和硫反应生成了CaS和CaS-MnS复合夹杂,有效抑制了MnS的弥散析出,减少了钢中微细夹杂物的数量。同时钙处理促进了钢中微细夹杂物的聚合长大,导致显微夹杂物的数量增加。
Based on thermodynamic calculation and laboratory experiment,the type,quantity and size of inclusions in annealed cold-rolled steel sheets of 50W600 non-oriented silicon steel before and after calcium treatment were systematically studied.Results showed that after calcium treatment （w（Ca） =0.002 6％）,calcium was mainly in the form of CaO · 2Al2O3,CaO · 6Al2O3 and dissolved calcium in steel at 1 600 ℃.Dissolved calcium could combine with sulfur to form CaS inclusions and compound CaS-MnS inclusions during solidification,and as a result,effectively inhibited the precipitation of MnS precipitates and reduced the quantity of fine inclusions in steel.Furthermore,the fine inclusions were easier to aggregate to grow up and led to the increase in the quantity of micro-inclusions after calcium treatment.
出处
《上海金属》
CAS
北大核心
2014年第1期37-41,共5页
Shanghai Metals
关键词
50W600无取向硅钢
钙处理
热力学分析
显微夹杂物
50W600 Non-Oriented Silicon Steel
Calcium Treatment
Thermodynamic Analysis
Micro-Inclusion
