方宇荣, 陈正权. 120 t BOF-LF-VD-CC流程冶炼的20CrMnTi齿轮钢氧含量和夹杂物特性[J]. 特殊钢, 2020,41(6):64-67.
方宇荣, 陈正权. Oxygen Content and Inclusion Characteristics of 20CrMnTi Gear Steel Produced by 120 t BOF-LF-VD-CC Process[J]. Special Steel, 2020, 41(6): 64-67.
方宇荣, 陈正权. 120 t BOF-LF-VD-CC流程冶炼的20CrMnTi齿轮钢氧含量和夹杂物特性[J]. 特殊钢, 2020,41(6):64-67.DOI:
方宇荣, 陈正权. Oxygen Content and Inclusion Characteristics of 20CrMnTi Gear Steel Produced by 120 t BOF-LF-VD-CC Process[J]. Special Steel, 2020, 41(6): 64-67.DOI:
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
2
O
3
→Al
2
O
3
-MgO→Al
2
O
3
-CaO-MgO的转变。
Abstract
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 20CrMnTi gear steel produced in the process of 120 t BOF-LF- VD-CC have been carried out. The experimental results show that using the technology of aluminum deoxidation and the high-basicity [ (CaO)/(SiO
2
) =3. 8 ~7
]
reduction slag
the T[O
]
in the slab can be less than 20 x 10
-6
the average T[O
]
of liquid in tundish gas increases by 6 x 10
-6
during the steelmaking process of gear steel
the inclusions in steel have completed the transformation from Al