无取向电工钢冶炼过程氧含量控制

特殊钢 ›› 2019, Vol. 40 ›› Issue (4): 38-42.

无取向电工钢冶炼过程氧含量控制

郭飞虎^1,2, 仇圣桃², 乔家龙², 刘磊²

1安徽工业大学冶金工程学院，马鞍山243002；
2钢铁研究总院连鮮技术国家工程研究中心，北京100081

收稿日期:2019-03-15 出版日期:2019-08-01 发布日期:2022-05-15
作者简介:郭飞虎(1991-),男，硕士生,安徽工业大学(本科)毕业，无取向电工钢产品研发。
基金资助:
国家重点研发计划资助(2016YFB0300305)

Controlling Oxygen in Steelmaking Process of Non-Oriented Electrical Steel

Guo Feihu^1,2 ,Qiu Shengtao², Qiao Jialong² , Liu Lei²

1 College of Metallurgical Engineering, Anhui University of Technology, Ma^'anshan 243002 ；
2 Engineering and Research Center for Continuous Casting Technology, Central Iron and Steel Research Institute, Beijing 100081

Received:2019-03-15 Published:2019-08-01 Online:2022-05-15

摘要/Abstract

摘要： 无取向硅钢的磁性能与钢的洁净度水平密切相关。为实现对无取向电工钢冶炼过程氧含量的合理控制,分析了无取向电工钢冶炼过程碳氧含量变化数据,热力学计算转炉终点临界碳含量与炉渣α_FeO。结果表明:随着转炉终点碳含量的降低,终点氧含量升高且波动范围大,合理出钢碳含量应控制为0.03%～0.05%;为满足炉渣中T.Fe≤24%的现场生产要求,终点碳含量应高于0.031%;钢包底吹氩气可有效降低钢液中过剩氧,降低钢液的平均碳氧积;据现场生产数据,RH精炼前理想碳、氧含量应控制为0.025%～0.035%和500×10^-6～650×10^-6,相应转炉终点碳含量控制为0.03%～0.04%。

Abstract: Abstract The magnetic properties of non-oriented electrical steels are closely related to the cleanliness level. In order to achieve reasonable control of oxygen in non-oriented electrical steel smelting process,the change of carbon and oxygen content were analyzed, the critical carbon content at the end-point of BOF and α_FeO in slag were also calculated. The results show that with the decrease of end-point carbon content, the end-point oxygen content increases and fluctuates widely. The ideal carbon content in tapping should be controlled at 0. 03% ~0. 05%. It is required that the content of T. Fe in slag should be ≤ 24% and the end-point carbon content should be higher than 0.031%. Ladle botton argon blowing can effectively reduce excess oxygen and decrease carbon-oxygen product in molten steel. According to production data, the ideal carbon and oxygen content should be controlled at 0.025% ~0. 035% and 500 X 10^-6 ~650 X 10^-6 before RH refining, and the end-point carbon content of BOF should be controlled at 0.03% ~0.04%.

郭飞虎, 仇圣桃, 乔家龙, 刘磊. 无取向电工钢冶炼过程氧含量控制[J]. 特殊钢, 2019, 40(4): 38-42.

Guo Feihu , Qiu Shengtao, Qiao Jialong , Liu Lei. Controlling Oxygen in Steelmaking Process of Non-Oriented Electrical Steel[J]. Special Steel, 2019, 40(4): 38-42.