CAJ | 학술논문

对150 t顶底复吹转炉氮氩切换工艺和全程底吹N2工艺进行试验，结果表明：采用全程底吹N2工艺，当供氮强度不超过0．032 m3/（min· t）时，出钢前冶炼终点钢液氮含量为0．001％左右，钢中氮含量不会明显增加，与氮氩切换工艺相当。因此绝大部分钢种可以采用全程底吹N2的工艺进行冶炼，能够满足钢水质量要求。
대150 t정저복취전로담아절환공예화전정저취N2공예진행시험，결과표명：채용전정저취N2공예，당공담강도불초과0．032 m3/（min· t）시，출강전야련종점강액담함량위0．001％좌우，강중담함량불회명현증가，여담아절환공예상당。인차절대부분강충가이채용전정저취N2적공예진행야련，능구만족강수질량요구。
The change-over from N2 to Ar and whole process bottom blowing N 2 are studied by experi-ments in 150 t top-bottom combined blowing converter .The experimental results show that the end-point nitrogen content is about 0.001% which is equivalent to the end-point nitrogen content by change-over from N2 to Ar technology under experimental condition when nitrogen supply intensity does not exceed 0.032m3/(min· t).It is proposed that almost all steel grades can be melted by using whole process bot -tom blowing N2 technology and their nitrogen content can meet the needs of quality demands .