转炉冶炼低碳钢终点氧含量控制

来源期刊：钢铁2009年第5期

论文作者：蔡开科

文章页码：27 - 31

关键词：低碳钢； 转炉； 终点氧

Key words：low carbon steel； BOF； end-point oxygen content

摘    要：用户对钢的洁净度要求越来越高,为此必须尽力减少钢中非金属夹杂物数量和尺寸,尤其是对高品质冷轧产品更为重要。首先要控制转炉冶炼终点钢水中氧活度和渣中(FeO+MnO)含量,因为这是产生钢中夹杂物的根源。根据在工厂进行的调查研究工作,讨论了冶炼低碳钢转炉终点氧含量控制因素,转炉终点氧含量对RH脱碳结束氧的影响。并提出了降低转炉终点氧含量的技术措施。

Abstract: Steel cleanliness is increased under customer’s requirement.Steel producers are striving to produce cleaner steels.Therefore,to reduce the quantity and size of nonmetallic inclusions in the steel is imperative,especially for high quality cold-rolled products.The main controlling is oxygen activity in the molten steel and FeO+MnO in the slag at the blowing end-point of BOF steelmaking,because they are the main source of producing nonmetal inclusions.Based on our study work and recent literature,oxygen content control of low carbon at the blowing end-point of BOF and influence of the oxygen content at the blowing end on decarburization in the RH vessel are discussed.According to the results,decreasing measurements of end-point oxygen content are put forward.