保护渣性能对连铸圆坯表面质量的影响  

INFLUENCE OF MOLD FLUX ON SURFACE QUALITY OF CC ROUND BLOOMS

作　　者：成泽伟[1] 陈伟庆[1] 金长佳[1] 于平[2] 姚家华 

机构地区：[1]北京科技大学 [2]津钢管公司

出　　处：《钢铁》2002年第9期23-25,共3页Iron and Steel

摘　　要：在圆坯连铸实际生产数据的基础上 ,综合分析了保护渣粘度、熔化温度、熔速对圆坯表面纵裂和凹坑的影响。为防止圆坯产生表面缺陷 ,必须将保护渣性能调整到合适的范围。2 10 m m圆坯合适的保护渣粘度为 0 .6～ 1.1Pa· s、熔化温度为 1130～ 12 30℃、熔速为 4 0～ 5 0 s;2 70 m m圆坯合适的保护渣粘度为 0 .6～1.0 Pa· s、熔化温度为 12 0 0～ 12 70℃、熔速为 6 0～ 80On the basis of the data gathered in production,the influence of mold flux properties,such as viscosity and melting temperature as well as melting rate,on surface longitudinal cracking and depression of round blooms was investigated In order to avoid the surface longitudinal cracks and depressions of round blooms,the properties of mold flux should be adjusted:the appropriate viscosity is 0 6~1 0 Pa·s,melting temperature is 1130~1230 ℃ and melting rate is 40~50 s for φ210 mm round bloom,and viscosity is 0 6~1 0 Pa·s,melting temperature is 1200~1270 ℃ and melting rate is 60~80 s for φ270 mm round bloom

关 键 词：性能 表面质量 连铸 保护渣 圆坯 纵裂 

分 类 号：TF777[冶金工程—钢铁冶金] TF702