0.035~0.075S was produced by 30 t EBT EAF-40t LF (wire feeding)- 3.15 t ingot casting process. The production results of 30 heats steel 35MnVS showed that the sulphur content in steel after sulphur powder wire feeding was 0.040%-0.071%
while before feeding that was 0.007%~0.032%;and the sulphur yield of wire feeding was 50%~ 80%.The 0.3 kg/t aluminum wire was feeding after sulphur wire feeding to fine the grain size of steel. The grain size rating of 35MnVS products was 6~7
and the mechanical properties
micro- and macro structure met the standard requirements.