稀土合金化石油套管钢精炼-连铸-轧制过程夹杂物演变行为

梁雨雨, 倪培远, 刘麒麟, 厉英

Evolution Behavior of Inclusions in Rare Earth Metal Alloying Oil Casing Steel During Refining and Casting and Hot-Rolling Process

LIANG Yuyu, NI Peiyuan, LIU Qilin, LI Ying

图15 不加稀土炉次和加稀土炉次热轧管坯样不同Ca含量夹杂物的SEM像和EDS分析

Fig.15 SEM images showing the deformation behaviors of inclusions with different Ca contents and EDS analysis of hot rolled tube blank in RE-free steel and RE steel (a1-a3) RE-free steel with low Ca content (< 12%), along RD (a1), TD (a2), and ND (a3) (b1-b3) RE-free steel with medium Ca content (12%-21%), along RD (b1), TD (b2), and ND (b3) (c1-c3) RE-free steel with high Ca content (> 21%), along RD (c1), TD (c2), and ND (c3) (d1-d3) RE steel with no Ca content limit, along RD (d1), TD (d2), and ND (d3)