IF钢洁净化生产工艺分析与实践  

Process analysis and practice of clean IF steel production

作　　者：田勇[1] 安连旗[1] 张相春[1] 李镇[1] 温铁光[1] 魏元[1] 

机构地区：[1]鞍钢股份有限公司炼钢总厂,辽宁鞍山114021

出　　处：《炼钢》2012年第4期27-31,65,共6页Steelmaking

摘　　要：以鞍钢股份有限公司炼钢总厂四工区"铁水喷吹法脱硫→260 t顶底复吹转炉冶炼→挡渣出钢→RH-TB真空精炼→中厚板坯连铸"生产IF钢的工艺路线为研究对象,着重讨论了转炉冶炼、RH真空精炼和连铸3个关键工艺环节,从钢水T.O含量控制、RH升温控制、保护浇铸和浇铸过程稳定性控制等方面分析和提出了提高IF钢洁净度的措施,在改进IF钢洁净度、降低钢中夹杂物含量、提高成材率方面取得了良好的效果。Taking the processing route of IF steel production, namely ＂hot metal injec- tion desulphurization→slag blocking in the tapping stage--~RH-TB vacuum refining→ medium and heavy plate continuous casting＂ in the No. 4 Work Shop of the General Steelmaking Plant of Angang as the object of studies the present paper discusses in de- tail 3 key processing points of converter refining, RH vacuum refining and continuous casting and analyzes total oxygen content in liquid steel, temperature control in RH, protection casting and control of consistency in the continuous casting and puts forward measures for improvement in the cleanliness o{ IF steel. As the results very satisfactory results have been achieved in the aspects of improvement in the cleanliness of the IF steel, reduction of the inclusions in steel and increase in the qualified product rate.

关 键 词：IF钢 洁净钢 炼钢 炉外精炼 连铸 

分 类 号：TF762[冶金工程—钢铁冶金]