超低碳钢RH精炼过程中钢水氧位异常原因与控制  

CAUSE AND CONTROL OF ABNORMAL OXYGEN LEVEL IN MOLTEN STEEL DURING RH REFINING OF ULTRA LOW CARBON STEEL

作　　者：李波 李梦英 冯慧霄 李梦龙 刘立学 路博勋 

机构地区：[1]河钢集团唐钢公司技术中心,河北唐山063000

出　　处：《河北冶金》2017年第6期53-56,共4页Hebei Metallurgy

摘　　要：针对超低碳钢在RH精炼过程中氧位异常引起的钢水成分偏差、造成质量事故等问题,分析了钢水氧位异常的原因,认为真空槽内壁耐材结冷钢是造成钢水氧位异常的主要影响因素。研究了冷钢的形成位置、形态及组成,冷钢主要由铁和铁的氧化物组成,在遇到高温钢水时形成游离氧,从而使钢水中的氧含量升高。通过减小碳氧反应强度、降低钢水喷溅率可以减少冷钢生成,同时优化了烘烤制度和化冷钢制度,解决了超低碳钢因氧位异常造成的质量问题和生产事故。Aiming at the problems of composition deviation of the liquid steel and the quality accident caused by abnormal oxygen level during RH refining of ultra low carbon steel, it is supposed that the main factor is cold steel bonded to inner wall ＂s refractory materials of the vacuum tank. The forming position, shape and composition of cold steel are researched. Cold steel is mainly composed of iron and iron oxide, which would become free oxygen after encountering high temperature molten steel, to increase the oxygen content of the molten steel. The generation of cold steel is reduced by decreasing the carbon oxygen reaction strength and molten steel splash rate; meanwhile both of the baking system and cold steel gasification system are opti- mized. As a result, the quality problems and production accidents caused by abnormal oxygen level in ultra low carbon steel are solved.

关 键 词：超低碳钢 RH精炼 氧位 异常 原因 控制 

分 类 号：TF769.4[冶金工程—钢铁冶金]