摘要
对管线钢生产中LF炉的脱硫、净化钢液及夹杂物变性等冶金功能进行了试验研究。结果表明:①武钢管线钢生产中,LF炉的平均脱硫率达到了55%,全氧及显微夹杂物的去除率分别为43.3%,44.4%,LF炉的脱硫及净化钢液的效果良好;②硅钙合金的加入,不仅把蔟状的Al2O3夹杂变成球状、低熔点的钙铝酸盐夹杂,同时消除了条状硫化锰夹杂,这对管线钢提高抗HIC性能非常有利;③硅钙线吨钢加入量为0.7 kg时夹杂物变性效果不理想,应适当增加硅钙线的加入量。
The effect of desulfurizing, purifying and modifying inclusion at ladle furnace for pipeline steel was investigated. The results show the average desulfurization percentage was 55 %, the removal percentage of total oxygen and micro inclusion were 43.3 % and 44.4 % respectively. The effects of desulfurizing and purifying were satisfactory. After the addition of calcium silicon alloy, the cluster alumina were modified into spherical calcium aluminate with low melting point, at the same time, the liner MnS inclusion were eliminated, and so improve the resistance against hydrogen induced cracking （HIC）. When the addition of calcium - silicon wire was 0.7 kg/t, the inclusion modification was insufficient, so the addition should be increased appropriately.
出处
《钢铁钒钛》
CAS
2006年第2期48-51,共4页
Iron Steel Vanadium Titanium
关键词
LF精炼
管线钢
脱硫
夹杂物
钙处理
ladle furnace refining
pipeline steel
desulfurization
inclusion
calcium treatment
