J55管坯钢92t钢包炉(LF)精炼工艺实践  

Practice for Refining Process of 92 t Ladle Furnace for Tube Bloom Steel J55

作　　者：王海兵 

机构地区：[1]攀钢集团成都钢铁有限责任公司,成都610069

出　　处：《特殊钢》2005年第5期60-61,共2页Special Steel

摘　　要：攀钢集团成都钢铁公司采用92 t偏心底(EBT)电弧炉-92 t钢包炉生产成分(%):0.32～0.38C,1.25～1.55Mn J55管坯钢.电弧炉出钢时[C]≥0.10%,[P]≤0.015%;EBT出钢约1/4时,加入硅铝钡脱氧剂200 kg/炉,通过控制LF精炼时渣中FeO浓度小于0.5%,可使钢中S含量低于0.015%.在LF处理时,通过喂Al线吹氩8～15 min后再喂0.4～0.6 kg/t CaSi线处理,以促进夹杂物上浮,防止中间包水口堵塞.The tube bloom steel J55 - 0.32 ～ 0.38C, 1.25 ～ 1.55Mn is produced by 92 t EBT arc furnace - 92 t ladle furnace （LF） at Chengdu Iron and Steel, Pangang Group. With controlling [C] ≥10.10%, [P] ≤0.015 at arc furnace tapping, adding silicon- aluminium- barium deoxidant 200 kg/heat at EBT tapping a quarter of metal to decrease the oxygen content in molten steel, and with controlling FeO content in slag during LF refining, the sulfur content in steel shall be lower than 0.015%. During LF refining with feeding A1 wire, argon stirring for 15 min than feeding 0.4 ～0.6 Kg/t CaSi wire to promote inclusion floating off, the nozzle dogging could be prevented.

关 键 词：管坯钢 LF 精炼 LF精炼 钢包炉 J55 工艺实践 夹杂物上浮 钢铁公司 攀钢集团 

分 类 号：TF769[冶金工程—钢铁冶金]