新型IF钢连铸保护渣熔化及结晶特性研究  

Melting and Crystallization Behaviors of New Type Mold Flux for IF Steel Casting

作　　者：李静文[1] 王万林[1] 周乐君[1] 

机构地区：[1]中南大学冶金与环境学院,湖南长沙410083

出　　处：《金属材料与冶金工程》2015年第3期16-19,23,共5页Metal Materials and Metallurgy Engineering

摘　　要：IF钢对其连铸板坯的表面质量有着严格的要求,通过减少保护渣中Na_2O、CaF_2、MnO含量及增加保护渣中Al_2O_3含量来增加渣钢间的界面张力,从而抑制卷渣,优化铸坯的表面质量。并且增加渣中B_2O_3的含量以满足保护渣合适的熔化和结晶性能,为了研究新型保护渣的熔化与结晶特性能,因此采用单丝双丝技术来检测保护渣的熔化及结晶特性。The requirement of IF steel for slab surface quality is very high. Through reducing the content of Na2O, CaF2, MnO and increasing the content of Al2O3 in mold flux, the interfacial tension between the mold flux and molten steel is increased to inhibit the slag entrapment and improve the surface quality of the casting slab. Moreover, the content of B2O3 is increased to control the melting and crystallization behaviors of the mold flux. In order to study the melting and crystallization properties of new type mold flux, DHTT and SHTT were used to detect the melting and crystallization properties of the mold flux.

关 键 词：IF钢 保护渣 熔化 结晶 

分 类 号：TG111.4[金属学及工艺—物理冶金] TG21[金属学及工艺—金属学]