CAJ | 학술논문

对首钢京唐生产 IF 钢的同一浇次前2炉的 RH 精炼、镇静和中间包浇铸过程进行了系统取样,并利用 Aspex 自动扫描电子显微镜分析统计了钢中夹杂物的成分、尺寸等信息。研究发现,Al2 O3-Tix O 复合夹杂物在 Ti 合金化和二次氧化的情况下都会生成,并随着精炼的进行逐渐转变为 Al2 O3,这与热力学计算的结果一致；而 Al2 O3可以作为 Al2 O3-Tix O 的形核核心,形成 Al2 O3-Tix O 包裹 Al2 O3的夹杂物,并且在Al2 O3-Tix O 转变为 Al2 O3的过程中会导致钢滴进入夹杂物内部,从而形成 Al2 O3包裹钢滴的夹杂物。
대수강경당생산 IF 강적동일요차전2로적 RH 정련、진정화중간포요주과정진행료계통취양,병이용 Aspex 자동소묘전자현미경분석통계료강중협잡물적성분、척촌등신식。연구발현,Al2 O3-Tix O 복합협잡물재 Ti 합금화화이차양화적정황하도회생성,병수착정련적진행축점전변위 Al2 O3,저여열역학계산적결과일치；이 Al2 O3가이작위 Al2 O3-Tix O 적형핵핵심,형성 Al2 O3-Tix O 포과 Al2 O3적협잡물,병차재Al2 O3-Tix O 전변위 Al2 O3적과정중회도치강적진입협잡물내부,종이형성 Al2 O3포과강적적협잡물。
The transition of non-metallic inclusions of IF steel produced by SGJT during RH refining and tundish Was investigated.Molten steel samples Were taken from 2 industrial heats systematically,and the compositions,size distribution and number of the inclusions Were analyzed using Aspex scanning electron microscopy.The results shoWed that Ti alloying and reoxidation of molten steel results in the formation of Al2 O3-Tix O inclusions, then these inclusions are transformed into Al2 O3 inclusions during RH refining,Which is in agreement With thermodynamic calculation.In addition,Al2 O3 inclusions could be the nucleus of Al2 O3-Tix O that Wraps up them,and steel droplets outside enters into the interior of the inclusions in the transformation from Al2 O3-Tix O to Al2 O3 ,so steel droplets exists in the interior of Al2 O3 inclusions.