范连明, 李锡峰, 胡维铸. Process Practice of Bearing Steel GCrl5 Steelmaking by 150 t BOF Catch Carbon Blowing Process[J]. Special Steel, 2010, 31(5): 39-41.DOI:
The bearing steel GCr15 is produced by pretreated hot metal (0.050% P
≤0.005% S)-150 t BOF catch carbon blowing LF (RH) - 350 mm x 470 mm bloom casting-800 mm bar-rod continuous rolling mill process at Benxi Steel. Operation practice results show that the higher oxidative state of liquid at condition of high lance height is favorable to remove the phosphorus in steel and realize high [C] at tapping
i. e. BOF end [C]- 0.41%-0. 67% and [P]-0. 013%- 0.017% ; the tundish [C] is 0.96%-0.98%
[P] 0. 014%-0.020% and [S] 0.002%-0.005% ; and the chemical composition and metallurgical quality of steel meet the requirement of standard.