姚春发, 李太全, 王敏, et al. Experiment of Deoxidation and Desulphurization for X120 Pipeline Steel Melting by Vacuum Induction Furnace[J]. Special Steel, 2008, 29(4): 25-27.
姚春发, 李太全, 王敏, et al. Experiment of Deoxidation and Desulphurization for X120 Pipeline Steel Melting by Vacuum Induction Furnace[J]. Special Steel, 2008, 29(4): 25-27.DOI:
The test of deoxidation and desulphurization of X120 pipeline steel-0.03~0.04C
1.98~2.05Mn
≤ 0.9(Cr+Mo+Nb+V+Ti)has been caried out by 150 kg and 50 kg vacuum induction furnace with magnesium oxide crucible. Results showed that with controlling carbon-oxygen reaction using carbon for deoxidiza tion and controlling melting temperature to avoid furnace lining decomposition
the oxygen content in steel was ≤20×10
-6
and with CgO-BaO-CaF
2
fining slag the sulphur content in steel was≤0.002%.It was found by scanning electron microscope that there was ≤5 μm MgO inclusions in steel which originated from crucible.