10.3969/j.issn.1003-8620.2017.06.005
300t-BOF-RH-CC流程冶炼Ti-IF钢夹杂物的衍变行为
试验Ti-IF钢(/%:≤0.003 5C,≤0.03Si,0.08~0.20Mn,≤0.025P,≤0.015S,0.05 ~0.07Ti,0.030 ~0.055Als,≤0.004 0N) BOF终点[C]0.03%~0.06%,终点[O]0.003 0% ~0.060 0%,出钢过程加石灰和含Al钢包顶渣改质剂,RH终渣组成/%:53.38CaO,7.05FeO,1.01 MnO,31.4Al2O3,5.7MgO,0.3P2O5,0.022S.RH精炼过程取样分析表明,通过加顶渣改质剂,控制8%(FeO+ MnO),CaO/Al2O3=1.7,能较好去除钢中夹杂物,精炼过程钢中氧含量逐步下降,铸坯中氧含量为0.001 4%,氮含量为0.001 5%;脱碳结束时夹杂物主要为MnO;铝脱氧结束之后为Al2O3;合金化后为Al2O3及Al-O-Ti复合夹杂物;在铸坯中,前述夹杂物有效去除,但在凝固过程析出TiN夹杂.
300 t-BOF-RH-CC流程、Ti-IF钢、夹杂物、衍变行为
38
TG1;TF7
2017-12-14(万方平台首次上网日期,不代表论文的发表时间)
共4页
19-22