气体增氮法冶炼钒氮微合金钢  

Technology for Smelting V-N Micro-alloyed Steel by Blowing Nitrogen

作　　者：康伟[1] 康磊[1] 赵坦[1] 廖相巍[1] 

机构地区：[1]鞍钢股份有限公司技术中心,辽宁鞍山114009

出　　处：《鞍钢技术》2014年第6期18-21,共4页Angang Technology

摘　　要：从理论上分析了钢液增氮的热力学、动力学影响因素,进行了BOF+RH双联吹氮冶炼钒氮钢试验。结果表明,转炉底吹、RH喷吹均能有效增加钢液氮含量。RH真空度两段式控制既能满足控氢要求又能实现钢液搬出时较高的氮含量。BOF+RH双联吹氮气工艺可以不加含氮合金冶炼钒氮微合金钢。The thermodynamic and dynamic influence factors for increasing the content of nitrogen in molten steel are theoretically analyzed and the experiment for the smelting V-N contain-ing steel by blowing nitrogen into both BOF and RH is carried out. The results show that the content of nitrogen in molten steel can be effectively increased by converter bottom blowing and RH blowing. With its characteristics of the RH blowing the two-stage control technology for RH vacuum degree can meet the requirement for controlling the content of hydrogen and also the molten steel with relative high content of nitrogen can be available when tapping. V-N micro-alloyed steel can be smelted without adding the nitrogen-containing alloy by using BOF and RH duplex nitro-gen-blowing process.

关 键 词：钒氮钢 吹氮 真空度 

分 类 号：TF777[冶金工程—钢铁冶金]