50 t EAF-LF冶炼终点(TPC)和窄成分(NCC)控制技术的应用  

Application of Terminal Process and Narrow Composition Control Technology of 50 t EAF-LF

作　　者：王广连 申景霞 王学利 孙永喜 李猛 翟正龙 

机构地区：[1]莱芜钢铁股份有限公司特殊钢厂,莱芜271105

出　　处：《特殊钢》2007年第3期59-61,共3页Special Steel

摘　　要：莱钢特钢厂通过50 t EAF冶炼终点控制技术(TPC)的应用,稳定了电弧炉钢水终点成分和温度,减轻或消除了钢水过氧化,稳定合金回收率,为LF提供了符合要求的钢水。通过LF前期、中期和后期的模式化操作,实现钢水的窄成分控制(NCC),使C控制偏差±0.01％炉数达到80％,Mn、Cr控制偏差±0.02％和Si控制偏差±0.05％达91％;齿轮钢S≤0.015％、P≤0.025％、氧含量≤20×10^(-6)分别达到96％、97％和95％;轴承钢S≤0.005％、P≤0.020％、氧含量≤12×10^(-6)分别达到95％、97％和100％。With application of a 50 t EAF steelmaking terminal process control （TPC） at Special Steel Plant, Laiwu Steel, the end composition and temperature of steel and the yield of alloy are constant, and the overoxidation is eliminated or relieved to supply qualified molten steel for LF. With modelling operation in LF earlier, medium and later refining period, the narrow composition control （NCC） of molten steel is realized to get the heats frequency with C control deviation ± 0. 01% being 80%, Mn,Cr ± 0. 02% and Si ± 0. 05% being up to 91%, for gear steel, the heats frequency with S≤ 0. 015%, P≤0. 025% and oxygen content ≤〈20 × 10-6 being respectively up to 96%, 97% and 95%, and for bearing steel with S≤0. 005%, P≤0. 020%, oxygen content ≤12 ×10^-6 being respectively up to 95%, 97% and 100%.

关 键 词：50 t电弧炉 钢包精炼炉 冶炼终点控制 窄成分控制 齿轮钢 轴承钢 

分 类 号：TF769[冶金工程—钢铁冶金]