70t EAF-LF-CC流程生产GCr15轴承钢的工艺实践  

Practice of Process for Production of GCr15 Bearing Steel by a 70 t EAF-LF-CC Flow Sheet

作　　者：王忠英[1] 张银生[1] 王前[1] 于滨海 仝太钦 

机构地区：[1]江苏淮钢有限公司,淮安223002

出　　处：《特殊钢》2006年第1期51-52,共2页Special Steel

摘　　要：淮钢有限公司采用70t高阻抗电弧炉-80t钢包精炼炉-5流150mm×150mm方坯连铸-连轧工艺生产Φ12～60mmGCr15轴承钢。36炉轴承钢生产结果统计表明，为降低钢中残余元素和氢含量，通过炉料中配入40％～50％铁水，精炼时全程氩气搅拌、钡合金脱氧、保护浇注等工艺措施，可使GCr15轴承钢连铸坯中平均氧含量≤10×10～，钢材疏松0．5～1．5级，偏析0．5～1．0级，夹杂物0．5～2．0级，各项指标均符合GB，T18254-2002标准要求。Φ 12～60 mm bar products of GCr15 bearing steel are produced by a 70 t high impedance UHP EAF - a 80 t ladle refining furnace - 5 strand 150 mm × 150 mm billet eoneaster flow sheet at Huaigang Co Ltd. The statistical results of 36 heats bearing steel production data showed that with the process operation such as electric are furnace charging 40% ～ 50% hot metal to decrease residual elements and hydrogen content in steel, whole time argon stirring in refining, deoxida- fion by barium alloy, and shielding casting, the average oxygen content in billet of GCrl5 bearing steel was less than 10×10^-6, the porosity rating in steel products 0.5 ～1.5, the segregation rating 0.5 ～ 1.0,inclusion rating 0.5 ～ 2.0, and each quality index was to meet the requirement of GB/T18254-2002 standard.

关 键 词：轴承钢 70t电弧炉 钢包炉 连铸 热装 

分 类 号：TF762.4[冶金工程—钢铁冶金]