首秦公司高品质钢种脱氧脱硫及非金属夹杂物控制研究  

Study on Dexidation and Desulfidation and Non-metallic Inclusion Control of High Quality Steels

作　　者：郝宁[1] 刘金刚[1] 李战军[1] 朱志远[2] 

机构地区：[1]首钢技术研究院 [2]秦皇岛首秦金属材料有限公司

出　　处：《首钢科技》2014年第3期10-13,共4页Shougang Science and Technology

摘　　要：介绍了首秦公司X70管线钢的工艺路线及控制要点，分析了钢液硫含量及非金属夹杂物控制情况。结果表明，按工艺控制要点操作后，LF炉精炼结束时钢液硫含量降至0.001O％以下，RH吊包时钢液T[O]含量约为0.0009％，当量直径为15μm的夹杂物数量为0～0.12个／mm2，显著提高了钢液洁净度，满足了高品质钢种对硫含量及非金属夹杂物的控制要求。This paper introduces the process route and controlling points of Shouqin X70 pipeline steel, analzes the sulfur content and non-metallic inclusion controlling situation in molten steel. The result shows according to the operation process , the sulfur content in molten steel decreases below 0.001% with the end of LF refining process, the inclusion removal rate is 64%—81%, T[O]content in molten steel is about 0.000 9% in RH hanging bag, the 15 μm equiualent diameter inclusion quanlity is 0—0.12 per mm2. The molten steel cleanliness level improves significantly and the controlling demand of sulfur content and non-metallic inclusion meet the demand of high quality steels.

关 键 词：脱硫 脱氧 夹杂物 洁净钢 

分 类 号：TF762.5[冶金工程—钢铁冶金]