通过试验研究了150 t顶底复吹转炉—150 t LF炉—薄板坯连铸连轧流程钢液w(N)的变化。研究发现:转炉出钢、吹氩操作、LF炉精炼和连铸过程均可能增氮,自转炉出钢至LF炉精炼开始过程和钢水从大包进入中间包过程增氮最为严重,平均增氮都接...通过试验研究了150 t顶底复吹转炉—150 t LF炉—薄板坯连铸连轧流程钢液w(N)的变化。研究发现:转炉出钢、吹氩操作、LF炉精炼和连铸过程均可能增氮,自转炉出钢至LF炉精炼开始过程和钢水从大包进入中间包过程增氮最为严重,平均增氮都接近20×10-6。对影响钢液增氮的一些因素进行了讨论,提出了相应的改进措施。展开更多
Indirect methods to detect and evaluate inclusions in steel are extensively reviewed, which include total oxygen content measurement, nitrogen pickup, steel and slag composition measurement, lining refractory observat...Indirect methods to detect and evaluate inclusions in steel are extensively reviewed, which include total oxygen content measurement, nitrogen pickup, steel and slag composition measurement, lining refractory observation, tracer studies of determining exogenous inclusions from slag and lining erosion, SEN clogging and final prod- uct tests. There is no single ideal method of detecting and evaluating inclusions in steel, so it is better to use several methods simultaneously to give a more accurate evaluation. Total oxygen content and nitrogen pickup in low carbon aluminum-killed steel as criterion of clean steel in many plants are summarized.展开更多
文摘通过试验研究了150 t顶底复吹转炉—150 t LF炉—薄板坯连铸连轧流程钢液w(N)的变化。研究发现:转炉出钢、吹氩操作、LF炉精炼和连铸过程均可能增氮,自转炉出钢至LF炉精炼开始过程和钢水从大包进入中间包过程增氮最为严重,平均增氮都接近20×10-6。对影响钢液增氮的一些因素进行了讨论,提出了相应的改进措施。
文摘Indirect methods to detect and evaluate inclusions in steel are extensively reviewed, which include total oxygen content measurement, nitrogen pickup, steel and slag composition measurement, lining refractory observation, tracer studies of determining exogenous inclusions from slag and lining erosion, SEN clogging and final prod- uct tests. There is no single ideal method of detecting and evaluating inclusions in steel, so it is better to use several methods simultaneously to give a more accurate evaluation. Total oxygen content and nitrogen pickup in low carbon aluminum-killed steel as criterion of clean steel in many plants are summarized.
