Steel Cleanliness of Tire Cord Steels

摘要：

　　Steel samples and slag samples were taken at each step of steelmaking,refining and casting for the production of tire cord steels.The content of total oxygen(T.O.)and N,the morphology,amount,size distribution,and composition of inclusions in steel samples were analyzed.The T.O.and N in the steel after LF refining and in the tundish during continuous casting were as low as approximately 20ppm.In the billets,except the central thickness locations,the T.O.was below 18ppm and the N content was below 30ppm.Inclusions in steel were mainly with composition of MgO-CaO-SiO2-Al2O3-(MnO),MgO-MnO-SiO2-Al2O3-(CaO),CaOSiO2-Al2O3-(MnO)and MnO-SiO2-Al2O3-(CaO).The inclusions of MnO-SiO2-Al2O3-(CaO)were over 56%of the total inclusions.From LF to tundish to billet,the amount of inclusions was 35.48#/mm2,27.13#/mm2 and 18.68#/mm2,respectively.Over 65%inclusions were less than 3μm.At the same time,the composition of molten steel was calculated using Factsage software.

关键词： tire cord steel total oxygen inclusions thermodynamic calculation

作者: Changbo GUO Haitao LING Lifeng ZHANG Cheng LIU Guangshun WANG Yongbin GAO

作者单位: School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beij School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beij Qingdao Iron and Steel Group Co.,Ltd.Qingdao 266000,China

会议类型: 国际会议

会议名称: the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)

会议地点: 北京

会议语种:英文

页码: 817-820

在线出版日期: 2015-05-12（万方平台首次上网日期，不代表论文的发表时间）