The nonmetallic inclusions in Q235Bsteel produced by the process of BOF-LF-CSP and by BOF-slag washing-CSP were compared by means of metallographic microscope.The results show that the quantity of inclusions of each size with both processes is on the decline,and the smaller the size,the more obvious the tendency.About 73.5%inclusions in BOF-LF-CSP and 72.3%in BOF-slag washing-CSP have been removed,and a large proportion of inclusions were removed during the period from tapping to pre-LF.The majority of incl...
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