In order to ensure the gas content requirements of new alloy steel,the gas elements in it were controlled within the required range through VD furnace treatment.In addition,corresponding measures are taken to solve the problems such as Mn loss,temperature drop and slag overflow in VD experiment,and good results have been achieved.The amount of Al added and the dehydrogenation rate of VD were studied.The higher the amount of Al added before VD treatment,the lower the dehydrogenation rate during VD.
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