Abstract：According to the ULC steel adapting the thick slab and medialthin slab production technology respectively, some methods were introduced to analyze secondary oxidation of molten steel from ladle to tundish, total oxygen of steady state and nonsteady state, inclusions level and ratio of large size inclusions, etc. The results indicated that the clean degree of ULC slab adapting two production technology was approximately consistent at the steady state casting; during the nonsteady state casting process, the clean degree of medialthin slab was much lower than that of thick slab casting. Restricted by mould and shape of submerge nozzle, the thinslab casting blocking was more serious than thick slab casting. As transition from medialthin slab to thin slab continuous casting, as if in the thin slab continuous casting production lines achieve normal casting ultralow carbon steel, it must urgently solve the problem that should further improve the clean degree of molten steel, design reasonable structure of SEN and steadily operate continuous casting.
常桂华;栗红;陈本文;赵刚;王向辉. 不同工艺路线超低碳钢洁净度分析[J]. 钢铁, 2009, 44(5): 19-0.
CHANG Guihua;LI Hong;CHEN Benwen;ZHAO Gang;WANG Xianghui. Analysis of Different Technological Processes on the Clean Degree of UltraLow Carbon Steel. Iron and Steel, 2009, 44(5): 19-0.
2009, Vol. 44 
