CaF_2-CaO-Al_2O_3-SiO_2-MgO五元渣的表面张力及其在镍基合金电渣重熔的应用  

Surface Tension of Pentary Slag CaF_2-CaO-Al_O_3-SiO_2-MgO and Its Application in Nickel Base Alloy Electro-Slag Remelting

作　　者：刘立[1] 赵俊学[2] 李献民[1] 丁五洲[1] 陈峰[1] 李小孟[1,2] 

机构地区：[1]宝钛集团有限公司,宝鸡721014 [2]西安建筑科技大学,西安710000

出　　处：《特殊钢》2015年第6期20-22,共3页Special Steel

基　　金：国家自然科学基金项目资助(51174155)

摘　　要：试验研究了五元渣(/%:50~65CaF_2,6~15CaO,18~30Al_2O_3,4~10Si0_2,1~7MgO)的组元含量、熔渣温度(1 330~1 463℃)对表面张力的影响。结果表明,随熔渣温度升高,其表面张力下降,1 463℃五元渣的表面张力为0.372~0.418 N/m。60CaF2-15CaO-6SiO_2-18Al_2O_3-5MgO具有较低的表面张力(0.375 N/m),较好的流动性和低粘度值。3 t电渣炉熔炼镍基合金Inconel 600和625的工业应用结果表明,电渣锭成分均匀,[O]≤20×10^(-6),[N]≤50×10^(-6),平均电耗从原ANF-6渣重熔的1 933 kWh/t降至1 326 kWh/t。The effect of ingredient of pentary slag （/% ： 50 - 65CAF2, 6 - 15CaO, 18 - 30Al2O3, 4 - 10SiO2, 1 - 7MgO） and melting slag temperature （ 1 330 - 1 463 % ） on its surface tension has been studied. Results show that with in- creasing melting slag temperature, its surface tension decreases, and the surface tension of pentary slag at 1 463 ℃ is 0. 372 -0. 418 N/m. The surface tension of slag 60CaF2-15CaO-6SiO2-18Al2O3-5MgO has lower surface tension （0. 375 N/ m）, better fluidity and lower viscosity value. The results of commercial production of nickel base alloys Inconel 600 and 625 by 3 t ESR unit show that the elements content in ESR ingot are uniform, the gas content [0] ≤20 × 10^-6 and [N] ≤50×10 ^-6, the average power consumption decreases to 1 326 kWh/t from original 1 933 kWh/t by remehing with slag ANF-6.

关 键 词：电渣重熔 五元渣 表面张力 镍基合金 应用 

分 类 号：TF142.3[冶金工程—冶金物理化学]