| 120 t BOF-LF-VD-CC工艺生产GCr15轴承钢的氧含量控制 |
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| 引用本文： | 陈爱梅.120 t BOF-LF-VD-CC工艺生产GCr15轴承钢的氧含量控制[J].特殊钢,2012,33(5):43-44. |
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| 作者姓名： | 陈爱梅 |
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| 作者单位： | 包钢钢联股份有限公司技术中心,包头,014010 |
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| 摘 要： | 采用铁水预处理-120 t顶底复吹转炉-LF-VD-φ180 mm连铸工艺生产GCr15轴承钢.统计分析了轴承钢转炉终点C]对钢水氧活度的影响,LF精炼渣碱度对TO]的影响,LF末钢中铝含量对VD过程铝损和TO]的影响.通过控制转炉终点C]≥0.06％、出钢用铝锰铁强化脱氧;控制LF离位时Al]0.020％ ～0.040％,( FeO+MnO)≤1％,碱度2.8～4.5;VD软吹时间≥15 min,轴承钢中全氧含量为(6～12) ×10-6.
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| 关 键 词： | 转炉-LF-VD-CC工艺 GCr15轴承钢 氧含量 控制 |
Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 120 t BOF-LF-VD-CC Process |
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| Chen Aimei.Control of Oxygen Content in Bearing Steel GCr15 Steelmaking by 120 t BOF-LF-VD-CC Process[J].Special Steel,2012,33(5):43-44. |
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| Authors: | Chen Aimei |
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| Affiliation: | Chen Aimei (Technical Center,Baotou Steel(Group) Corp Ltd,Baotou 014010) |
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| Abstract: | The steel GCr15 is produced by hot metal pretreatment-120 t top and bottom combined blown converter-LFVD -Φ180 mm CC process.The statistical data for effect of converter endC]on oxygen activity in liquid,effect of LF refining slag basicity on TO]and effect of aluminium content in steel at end of LF refining period on aluminium loss and T0]in VD process are analyzed.With controlling converter endC]≥0.06%,using Al-Mn-Fe to deoxidize during tapping, controllingAl]0.020%～0.040%and（FeO + MnO）≤1%,slag basicity 2.8～4.5 at end of LF refining,and VD soft-blowing of argon≥15 min,the oxygen content in GCr15 bearing steel is（6～12）×10-6. |
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| Keywords: | Converter-LF-VD-CC Process Bearing Steel GCr15 Oxygen Content Control |
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