LF精炼SPHC钢硼微合金化工艺  

Boron Microalloying Process of SPHC Steel in Ladle Furnace

作　　者：颜慧成[1] 仇圣桃[1] 刘家琪[1] 郭亚东[1] 白连臣[2] 刘建华[2] 

机构地区：[1]钢铁研究总院连铸技术国家工程研究中心,北京100081 [2]唐山钢铁股份有限责任公司技术中心,河北唐山063016

出　　处：《钢铁研究学报》2007年第9期17-20,共4页Journal of Iron and Steel Research

摘　　要：通过对唐钢FTSC流程生产冷轧用SPHC钢进行硼微合金化工艺的开发研究,揭示了LF精炼过程硼微合金化的反应热力学特征与机制。通过硼微合金化若干工艺问题的解决和工艺优化,明确了钢水硫含量、增硅、铝控制之间的内在关系;使SPHC钢成分合格的同时,实现硼收得率达到64%,硼的质量分数波动±5×10-6;钙处理达到钢水中w(Ca)∶w(Alin)为1.26∶1时,确保水口浇注顺利,同时节省钙线用量。With the development of boron microalloyed SPHC steel in FTSC routine in Tangshan Steel, the thermodynamical mechanism of SPHC steel microalloying in ladle furnace is investigated. After several practical problems are resolved, the relation between contents of S, Si and AI has been disclosed. The ratio of Ca to Alin in steel is 1.26 ： 1 after calcium treatment, the nozzle clogging does not happen and the consumption of calcium is reduced. The recovery factor fluctuation of boron are 64 % and ± 5 × 10^-6, respectively.

关 键 词：硼微合金化 SPHC钢 LF精炼 

分 类 号：TF769[冶金工程—钢铁冶金]