Investigation on Variation of Inclusions and Total Oxygen in IF Steel After RH Deoxidization
The variational regulation of inclusions and total oxygen in the IF Molten Steel during the RH refining process after deoxidization was studied. The results show that the relationship between total oxygen content and time is in accord with the following equation, T.O=271.25e-1.53t+23.49, R2=0.9966.The inclusion analysis investigation during RH pure circulation process indicates that the main inclusion of the IF molten steel after 2 minutes from the beginning of deoxidization is cluster inclusions of pure Al2O3 system. After 6 minutes from the aluminum deoxidization, the quantity of inclusion decreases and the inclusion style changes into block inclusions of AI2O3 system with the size of 5um. In the other hand, some inclusions are of Al2O3-MgO. Complex inclusions of Al2O3-TiOx with the size of below 5μm, and the single particle or cluster complex inclusions with the typical square shape of Al2O3-TiN system are found after 3 minutes from titanium-ferrous alloy added. Then, the content of titanium of complex inclusions of Al2C?3-Ti0x decreases and the aluminum content rises along with the RH pure circulation time process. That means the inclusions of Al2O3-TiOx is not steady, and it trends to transfer into A12O3.
IF steel inclusion RH refining
SHU Hong-fu LIU Liu LIU Xue-hua ZHANG Xiao-feng
Central Iron and Steel Research Institute, Beijing 100081, China Technology Centre of Maanshan Iron Central Iron and Steel Research Institute, Beijing 100081, China Technology Centre of Maanshan Iron and Steel Co Ltd, Maanshan 243000, Anhui, China
国际会议
The 2nd International Symposium on Clean Steel(第二届洁净钢生产技术学术研讨会)
沈阳
英文
347-351
2011-08-23（万方平台首次上网日期，不代表论文的发表时间）