王郢, 徐建飞, 何西, et al. Analysis on Nozzle Clogging during Continuous Casting of Steel 38CrMoAl and Process Improvement[J]. Special Steel, 2021, 42(2): 38-41.
王郢, 徐建飞, 何西, et al. Analysis on Nozzle Clogging during Continuous Casting of Steel 38CrMoAl and Process Improvement[J]. Special Steel, 2021, 42(2): 38-41.DOI:
The ingredient of main inclusions in 38CrMoAl steel by 120 t BOF-LF-RH-CC process is A1
2
O
3
and CaS. The CaS content decreases and the A1
2
O
3
content increases with the time of refining. By calcium treatment experiments
it is obtained that the inclusions of 38CrMoAl steel could not be modified by calcium treatment
on the contrary
more CaS inclusions could be obtained by calcium treatment
leading to nozzle clogging during continuous casting of 38CrMoAl steel. The results of industrial experiments show that a good casting is obtained when the sulfur content after LF refining is controlled at 0.001% ~0.002% and no calcium is added after RH degassing.