30tEAF-LF-VOD/VHD流程冶炼MHT10Ta钢钽含量控制的工艺实践  

Practice of Process for Control of Tantalum Content in Steel MHT10Ta Melting by 30 t EAF-LF-VOD/VHD Flowsheet

作　　者：沙卫星 王坤 陈秀强 张丽娜[2] 秦四伟 

机构地区：[1]抚顺特殊钢股份有限公司第二炼钢厂,抚顺113001 [2]抚顺特殊钢股份有限公司技术中心,抚顺113001

出　　处：《特殊钢》2016年第2期44-46,共3页Special Steel

摘　　要：工业试验和分析了[N]、[O]和钢水温度对MHT10Ta钢钽收得率的影响。9炉工业生产试验结果表明,电弧炉采用氧化法冶炼;LF用C粉脱氧;VOD真空度≤67 Pa,时间≥15 min;进VHD加热,确保Al含量≥0.02%,温度1635~1645℃,Ar气流量100 L/min,按0.125%加入钽条,出钢前按0.01%插入Fe—B,出钢温度1580~1595℃,Ar气保护浇注,MHT10Ta钢成品钽含量0.08%~0.105%,通过工艺优化,钽的收得率可达60%。Abstract The effect of [ N], [ O] and liquid temperature on tantalum yield of steel MHT10Ta is analyzed by com- mercial test. The results of pilot 9 heats commercial production show that with melting in EAF by oxidation method, deoxi- dizing in LF by C powder, VOD refining vacuum ≤67 Pa for ≥ 15 min, VHD heating insuring A1 content in steel ≥ 0.02%, liquid temperature 1 635 ~ 1 645℃, Ar flow rate 100 L/min, adding tantalum bar O. 125%, inserting Fe-B ac- cording O. 01% content before tapping, tapping temperature 1 580 -1 595 ℃ and Ar shielding casting; the tantalum con- tent in finish products of steel MHT10Ta is 0. 08% ~ 0. 105%, the yield of tantalum is up to 60% by process optimization.

关 键 词：MHT10Ta钢 30 t EAF-LF-VOD/VHD 钽 收得率 工艺实践 

分 类 号：TF76[冶金工程—钢铁冶金]