碱度对CaO-SiO_2-Al_2O_3-CaF_2-Na_2O保护渣结晶性能的影响  

Influence of Basicity on Crystallization Properties of CaO-SiO_2-Al_2O_3-CaF_2-Na_2O Mold Fluxes

作　　者：沈铁[1] 

机构地区：[1]安阳钢铁集团有限公司烧结厂,河南安阳455004

出　　处：《热加工工艺》2010年第21期38-40,44,共4页Hot Working Technology

摘　　要：为控制结晶器保护渣结晶性能,采用热丝法构建保护渣的CCT与TTT曲线以探讨保护渣碱度(R)对其临界冷却速度及结晶孕育时间的影响规律。结果表明,随R增加保护渣临界冷却速度增加,而其TTT曲线向温度升高、孕育时间减少的方向移动。To control the crystallization properties of mold fluxes,the influence of basicity on the critical cooling rate and the incubation time of mold fluxes was obtained by constructing the CCT and the TTT diagram using SHTT.The results show that the critical cooling rate of mold fluxes increases and the TTT diagrams moves to higher temperature and shorter incubation time with the increase of basicity.

关 键 词：结晶器保护渣 碱度 热丝法 结晶性能 CCT TTT 

分 类 号：TG223[金属学及工艺—铸造]