305低磁不锈钢冶炼过程全氧和夹杂物分析  

Analysis of the Total Oxygen and Inclusions in 305 Stainless Steel with Low Magnetic

作　　者：马骏[1] MA Jun(Jiuquan Iron and Steel(Group)Co.Ltd.,Jiayuguan 735100,China)

机构地区：[1]酒泉钢铁(集团)有限责任公司,甘肃嘉峪关735100

出　　处：《甘肃冶金》2025年第1期70-74,共5页Gansu Metallurgy

摘　　要：对采用“电炉-AOD炉-VD-LF精炼炉-连铸”工艺路线生产的305低磁不锈钢冶炼过程全氧和夹杂物进行了分析。结果表明:在AOD-VD-LF过程钢液中平衡氧含量和全氧含量均是依次减小的,连铸中间包中全氧含量有一定程度的升高。整个冶炼过程夹杂物类型均为CaO-SiO_(2)-Al_(2)O_(3)-MgO,到连铸中间包,夹杂物成分中Al_(2)O_(3)和MgO质量分数均有明显升高。冶炼过程炉渣碱度升高,钢液中Al含量依次升高,最终导致夹杂物中Al_(2)O_(3)含量也是依次升高的。The total oxygen and inclusions in 305 stainless steel with low magnetic produced by the EAF-AOD-VD-LF-continuous casting process were investigated.The results show that the total oxygen content,the equilibrium oxygen content and inclusion size decrease throughout the AOD-VD-LF process,the total oxygen content in continuous casting tundish increase to a certain extent.The types of inclusions are mainly CaO-SiO_(2)-Al_(2)O_(3)-MgO during the whole production process.The contents of MgO and Al_(2)O_(3)in these inclusions continuously increase in the tundish.With the increase of slag basicity in smelting process,the Al content in molten steel increases in turn,resulting in the increase of Al_(2)O_(3)content in inclusions.

关 键 词：305不锈钢 全氧含量 平衡氧含量 夹杂物 炉渣碱度 

分 类 号：TF764.1[冶金工程—钢铁冶金]