Steel Cleanliness of Non-Oriented Silicon Steels during RH Refining
In this paper,the variation of T.O.,[N],other chemical compositions such as [C],[P],[S],[Mg],[Ti] of non-oriented silicon steel during RH vacuum degassing process were investigated.The effect of ladle holding time on the T.O.and [N] of the steel was studied.After the deoxidization of the molten steel was completed,cluster alumina and other large size complex inclusions were generated.After the addition of the deoxidizer,the T.O.of the steel rapidly decreased to a relatively low level while the [N] content changed slightly and still maintained in a low level.The T.O.and [N] were less than 20ppm after RH treatment.The T.O.in steel reached a lowest valur when the holding time was approximately 30 min.The variation of slag composition corresponded to the variation of inclusion composition.After decarburization,[C] was sharply decreased to 20ppm,however,[C] was slightly increased during desulfurization.
RH refining steel cleanliness inclusions total oxygen transient evolution
Fei LI Ying ZHANG Jiali WANG Shusen LI Lifeng ZHANG
School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beij Qian'an Iron & Steel Co.,Ltd. Shougang Group,Qian'an 064404,China
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
346-349
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）