转炉—大方坯连铸流程试制高铬管坯钢

来源期刊：钢铁钒钛2011年第2期

论文作者：陈天明 陈永 邓君 杨森祥 陈亮 李清春 曾建华

文章页码：39 - 42

关键词：高铬钢； 转炉； 半钢炼钢； 大方坯连铸； 铬； 收得率

Key words：high chromium steel； converter； steelmaking with semi-steel； bloom continuous casting； chromium； recovery rate

摘    要：针对L80-3Cr高铬管坯钢的成分特点及质量需求,通过采用合理的合金化制度、过程温度制度及连铸关键工艺技术,打通了半钢炼钢条件下LD—LF—RH—Bloom生产该钢种的工艺流程,达到了经济生产的目的。工业试验表明,冶炼过程Cr的平均收得率达98.2%,成品Cr成分控制稳定;圆钢wT[O]含量为10×10^-6～16×10^-6,平均13.5×10^-6,夹杂物各项评级均≤1.0级,表面及内部质量良好。

Abstract: In consideration of the composition characteristics and quality requirements of L80-3Cr high chromium steel,the rational alloying system,temperature system and key technologies of continuous casting process are employed in the development of a full-line operation of LD-LF-RH-Bloom continuous casting on steelmaking with semi-steel,which suggests an economic production of the steel has been realized.The industrial tests show that the average recovery rate of Cr in smelting process is 98.2%,and Cr content in final products is consistent.The T[O] content of rolled products is ranged from 10×10^-6 to 16×10^-6 with an average content of 13.5×10^-6.Various inclusions of the products are no more than 1.0 level.The rolled products have good surface quality and internal quality.