LF喂纯Ca与CaAl包芯线对DC01钢的冶金效果的影响  

Effect of LF Feeding Pure Calcium Wire and CaAl Cored Wire on Metallurgical Affect of DC01 Steel

作　　者：阮墨 李天佑 曾成 王春锋[2] 郑万[1,3] 李光强[1,3] Ruan Mo;Li Tianyou;Zeng Cheng;Wang Chunfeng;Zheng Wan;Li Guangqiang(Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081;Hubei Provincial Key Laboratory for New Processes of Ironmaking and Steel making,Wuhan University of Science and Technology,Wuhan 430081;Wuhan Iron and Steel Group Corporation Limited,Wuhan 430083)

机构地区：[1]武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室,武汉430081 [2]武汉钢铁有限公司,武汉430083 [3]武汉科技大学钢铁冶金新工艺湖北省重点实验室,武汉430081

出　　处：《特殊钢》2018年第5期48-53,共6页Special Steel

摘　　要：为了优化CSP工艺生产DC01钢的钙处理冶金效果,利用SEM+EDS分析了浸入式水口结瘤物的组成,研究比较了纯Ca与CaAl包芯线处理钢中夹杂物特征的演变规律与改性效果,探讨了铝对钙的收得率的影响。结果表明,CaAl线处理钢形成的水口结瘤堵塞物为改性不完全的钙铝酸盐、Al_2O_3以及MgO·Al_2O_3。钢中Al含量的变化对钙蒸气压与收得率的影响不大。在相同喂线速度、喂线量的情况下,与CaAl线相比,纯Ca线处理钢中残钙量、钙的收得率更高,夹杂物的改性效果更好。In order to optimize the metallurgical effect of calcium treatment for DC01 produced by CSP process, the composition of the nozzle nodulation, the evolution and the characteristics of inclusions in steels treated by Ca and CaA1 cored wire was analyzed by SEM ＋ EDS, influence of A1 on the yield of calcium was discussed. The results show that the nozzle nodulation are mainly composed of incompletely modified calcium aluminate, A12 03 and MgO-A12 03. Variety of A1 amount in steel has little influence on vapour pressure and yield of calcium. In the same conditions of feeding speed and adding amount of Ca cored wine, the amount of residual calcium and calcium yield were higher in the steel treated by Ca cored wire comoared with CaA1 cored wire, inclusions modification effect is better.

关 键 词：钙处理 CaAl线 纯Ca线 夹杂物改性 喂线工艺 

分 类 号：TF703[冶金工程—钢铁冶金]