王昆鹏, 王海洋, 徐建飞, et al. Investigation on Cleanliness of GCrl5 Bearing Steel Produced by 120t BOF-LF-RH-CC Process[J]. Special Steel, 2021, 42(2): 14-17.DOI:
Cleanliness in GCrl5 bearing steel produced by 120 t BOF-LF-RH-CC process investigated results show that the inclusions dominated in steel are Al
2
0
3
. MgO spinel and Al
2
0
3
-MgO-CaO type after LF refining and the Al
2
O
3
• MgO spinel is almost disappeared and the inclusions in steel are mainly liquid calcium aluminate after RH treatment. T. 0 content decreases to 5. 3 X 10
-6
after RH treatment and Al
2
O
3
• MgO spinel regenerates in tundish liquid during casting
and the ≥20um calcium aluminate inclusions are not found in liquid at end RH and tundish