Research on Macro-segregation of Continuous Cast Q235 Steel Slab
Author of the article:XIAO Buqing;YANG Haibin;WU Yaoguang
Author's Workplace：The First Steel Plant,Handan Branch of Hegang Co.,Ltd.,Handan 056015,China;Metallurgical Engineering Consulting and Design Division,MCC Capital Engineering and Research Incorporation Limited,Beijing 100176,China
Key Words：Q235 segregation acid etching macro analysis in-site detection and analysis
Abstract：The composition segregation of Q235 steel continuous casting billet was studied by acid etching, observing the macrostructure, in-situ detection and statistical analysis. The results show that the continuous casting slab has defects such as bulge and corner depression, some internal cracks, serious segregation. C is enriched in the center but Si, Mn, P and S are segregated negatively in the center of slab.
