公开(公告)号：EP3835437A1

公开(公告)日：2021-06-16

申请号：EP18929550.4

申请日：2018-12-18

申请人： POSCO

发明人： LEE, Sang Beom ,  LEE, Rak Do ,  HAN, Sang Hun ,  JEONG, Eun Ju ,  YOON, Sang Hyeon ,  HAN, Seung Min ,  KIM, Wan Yi

IPC分类号： C21C7/072 ,  B22D1/00

摘要： The present invention relates to a method for treating molten steel and an apparatus therefor, and the method may include preparing molten steel in a container, supplying a stirring gas to the container to stir the molten steel, measuring a first vibration amplitude (Btl) occurring in the container, and determining a path for supplying the stirring gas according to the measured first vibration amplitude (Bt1), wherein a nozzle clogging phenomenon due to inclusions or an occurrence of defect such as a crack in a product may be suppressed in casting by effectively removing inclusions in the molten steel.