CAJ | 학술논문

研究表明，硅钢中的夹杂物对成品带钢的磁性能有显著影响。为研究冶炼过程硅钢中的夹杂物遗传变化，进而提出更有效的控制措施加以去除，本文结合典型的无取向硅钢生产炉次，采用非水溶液电解提取+扫描电镜观察方法分析冶炼过程中上述炉次典型试样的夹杂物。结果表明：转炉冶炼结束、RH精炼开始时，钢的氧化物夹杂总量最大，约为0.23%；RH精炼过程中，氧化物夹杂总量不断降低，并在脱碳结束时达到最低，约为0.02%；连铸过程中，氧化物夹杂总量仍有不断降低趋势，但夹杂物的平均尺寸变化不大。本试验条件下，中间包试样的夹杂物数量约为1.59×104个/mm3。
연구표명，규강중적협잡물대성품대강적자성능유현저영향。위연구야련과정규강중적협잡물유전변화，진이제출경유효적공제조시가이거제，본문결합전형적무취향규강생산로차，채용비수용액전해제취+소묘전경관찰방법분석야련과정중상술로차전형시양적협잡물。결과표명：전로야련결속、RH정련개시시，강적양화물협잡총량최대，약위0.23%；RH정련과정중，양화물협잡총량불단강저，병재탈탄결속시체도최저，약위0.02%；련주과정중，양화물협잡총량잉유불단강저추세，단협잡물적평균척촌변화불대。본시험조건하，중간포시양적협잡물수량약위1.59×104개/mm3。
As we all know, the non-metallic inclusion effects magnetic properties of silicon steel sheets obviously. The article aims to study the heredity of non-metallic inclusion in non-oriented silicon steels during the steel making process, and then provides a more effective controlling measure to remove the inclusions. Based on the typical non-oriented silicon steel charges, the non-aqueous solution extraction and SEM observation were adopted to analyze the non-metallic inclusions. Results show that, the total oxide reaches the maximum 0.23% at the beginning of RH refining, then decreases gradually, and reaches the minimum 0.02% during the RH refining process. The total oxide inclusion decreases continuously during the CC casting, but the average size of inclusion is nearly stable. In the present work, the total inclusion amount in tundish is about 1.59×104/mm3.