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

表1 未添加稀土和添加稀土的石油套管钢的化学成分 (mass fraction / %)

Table 1 Chemical compositions of oil casing steel without and with RE addition

Sample C Si Mn Cr Mo Al S T.O Ca RE Fe RF5 0.273 0.211 0.332 0.980 0.854 0.0120 0.0008 0.0013 0.0020 0 Bal. R5 0.278 0.227 0.350 0.962 0.862 0.0150 0.0008 0.0007 0.0020 0.0004 Bal.