刘明, 柯晓涛, 邓通武, et al. Processing and Metallurgical Quality of Bearing Steel GCr15 Produced by 120 t Converter-LF-RH-CC Flow Sheet[J]. Special Steel, 2009, 30(3): 38-39.
刘明, 柯晓涛, 邓通武, et al. Processing and Metallurgical Quality of Bearing Steel GCr15 Produced by 120 t Converter-LF-RH-CC Flow Sheet[J]. Special Steel, 2009, 30(3): 38-39.DOI:
Bearing steel GCrl5 is produced by hot metal pretreatment- 120 t top and bottom combined blown convert- er-LF-RH-280 mm X 380 mm CC process at Pan Steel. With converter recarburization practice and slag stopping technology during tapping
controlling converter end [C
]
:0. 03% ~0. 07%
adding deoxidizing agent containing CaC
2
during tapping for pre-deoxidizing
deoxidizing by aluminium after tapping
controlling the basicity (CaO/SiO
2
) of LF refining slag 3. 0 ~ 5. 0
and average overheat of liquid steel in tundish = 26. 5℃
the examination results showed that carbon segregation index was 1.08
average [0
]
8x10
-6
[P
]
≤0. 015%
[S
]
≤0.011%,and the rating of inclusion in steel met the requirement of standard.