真空感应炉冶炼X120管线钢脱氧和脱硫试验  

Experiment of Deoxidation and Desulphurization for X120 Pipeline Steel Melting by Vacuum Induction Furnace

作　　者：姚春发[1] 李太全[2] 王敏[2] 李光瀛[1] 

机构地区：[1]钢铁研究总院结构材料研究所,北京100081 [2]北京科技大学冶金与生态工程学院,北京100083

出　　处：《特殊钢》2008年第4期25-27,共3页Special Steel

摘　　要：在150 kg和50 kg氧化镁坩埚真空感应炉上进行X120管线钢(%:0.03～0.04C、1.98～2.05Mn、≤0.9(Cr+Mo+Nb+V+Ti)的脱氧和脱硫试验。结果表明,通过控制碳氧反应用碳脱氧和控制冶炼温度避免炉衬分解,可使钢中氧含量≤20×10^(-6);在碳脱氧条件下,采用CaO-BaO-CaF_2系精炼渣,可使钢中硫含量≤0.002%。通过扫描电镜观察发现,钢中存在来源于坩埚的≤5μmMgo夹杂。The test of deoxidation and desulphurization of X120 pipeline steel - 0. 03 - 0. 04C, 1.98 - 2. 05Mn, 0. 9（ Cr ＋ Mo ＋ Nb ＋ V ＋ Ti） has been carried out by 150 kg and 50 kg vacuum induction furnaces with magnesium oxide crucible. Results showed that with controlling carbon-oxygen reaction using carbon for deoxidiza tion and controlling melting temperature to avoid furnace lining decomposition, the oxygen content in steel was ≤20 × 10^-6 and with CaO-BaO-CaF2 refining slag the sulphur content in steel was ≤0. 002%. It was found by scanning electron microscope that there was ≤5μm MgO inclusions in steel which originated from crucible.

关 键 词：X120管线钢 真空感应炉 脱氧 脱硫 

分 类 号：TF769[冶金工程—钢铁冶金]