摘要
采用全流程系统取样的方式,对120 t BOF-LF-VD-CC工艺生产20CrMnTi齿轮钢中氧含量和夹杂物特性的演变规律进行系统的分析和研究。实验结果表明,采用铝脱氧和高碱度[(CaO)/(SiO_2)=3.8~7]还原渣工艺,能使铸坯中T[O]低于20×10^(-6);中间包钢水中平均T[O]增加6×10^(-6);齿轮钢冶炼过程中,夹杂物完成了Al_2O_3→Al_2O_3-MgO→Al_2O_3-CaO-MgO的转变。
By the method of using a full-process system sampling,a systematic analysis and research on the evolution of the oxygen content and the inclusion characteristics in a 20 CrMnTi gear steel produced in the process of 120 t BOF-LFVD-CC have been carried out.The experimental results show that using the technology of aluminum deoxidation and the high-basicity[(CaO)/(SiO2)=3.8~7]reduction slag,the T[0]in the slab can be less than 20×10^-6;the average T[0]of liquid in tundish gas increases by 6×10^-6;during the steelmaking process of gear steel,the inclusions in steel have completed the transformation from Al2O3→Al2O3-MgO→Al2O3-CaO-MgO.
作者
方宇荣
陈正权
Fang Yurong;Chen Zhengquan(Technology Center,Fujian Sangang Minguang Co Ltd,Sanming 365000)
出处
《特殊钢》
北大核心
2020年第6期64-67,共4页
Special Steel
