CAJ | 학술논문

对转炉—RH精炼—连铸工艺生产高压气瓶用钢T［O］变化及非金属夹杂物进行研究的结果表明，在转炉出钢过程由于炉渣与脱氧产物作用生成的粗大球状夹杂物及铝脱氧生成的大尺寸Al2O3簇群状夹杂物绝大多数可由钢液排除，铸坯中存在的夹杂物主要是较小的块状和簇群状Al2O3及少量由于结晶器保护渣卷入造成的球状夹杂物。RH精炼后钢液T［O］在(28～34)×10－6之间，中间包钢水T［O］在(24～26)×10－6之间，铸坯T［O］在(12～19)×10－6之间，该工艺生产的气瓶用钢具有很高的洁净度。
대전로—RH정련—련주공예생산고압기병용강T［O］변화급비금속협잡물진행연구적결과표명，재전로출강과정유우로사여탈양산물작용생성적조대구상협잡물급려탈양생성적대척촌Al2O3족군상협잡물절대다수가유강액배제，주배중존재적협잡물주요시교소적괴상화족군상Al2O3급소량유우결정기보호사권입조성적구상협잡물。RH정련후강액T［O］재(28～34)×10－6지간，중간포강수T［O］재(24～26)×10－6지간，주배T［O］재(12～19)×10－6지간，해공예생산적기병용강구유흔고적길정도。
Investigation has been made on variation of T［O］ and non-metallic inclusions in high pressure gas cylinder steel during production with BOF-RH-CC route.It is found that large sized spherical type inclusions and Al2O3 clusters generated by the reaction between liquid steel and slag during BOF tapping or Al deoxidation can be removed almost completely from liquid steel.Non-metallic inclusions existing in CC slabs mainly are small sized block shipped Al2O3,Al2O3 clusters and few entrapped mold flux formed spherical inclusions.Total oxygen is (28-34)×10－6 after RH refining,(24-26)×10－6 in tundish and(12-19)×10－6 in slabs,which indicates that clean high pressure cylinder steel can be produced through this production route.