板坯连铸结晶器保护渣性能的高拉速适用性研究  

A Study on Applicability of Mold Flux Properties for Slab High Speed Concasting

作　　者：朱立光[1] 韩毅华[1] 赵俊花[1] 

机构地区：[1]河北理工大学冶金与能源学院,唐山063009

出　　处：《特殊钢》2008年第4期1-4,共4页Special Steel

基　　金：教育部新世纪优秀人才支持计划(NCET-06-0257)

摘　　要：试验研究了唐山不锈钢厂180～200 mm板坯连铸使用的成分(%)分别为56～58黄长石、25～27硅灰石、4～5枪晶石、10～12玻璃相和20～22黄长石、78～80玻璃相两种结晶器保护渣的理化特性、结晶相结构及渣液的化学成分、熔化温度和液渣层的厚度。结果表明,在拉速≥1.5 m/min时,为使保护渣在结晶器内保持"全程液态润滑",保护渣的熔化温度应≤1049℃,熔化速度控制在(34±2)s;最佳熔渣层厚度为10～15 mm,渣子粘度为0.19 Pa·s。The physical and chemical properties, and structure of crystallizing phases of two kinds of flux - 56- 58 melilite, 25-27 grammite, 4 - 5 lance spar, 10 -12 glass phase and 20 - 22 melilite, 78-80 glass phase, and ingredient, melting temperature and thickness of liquid slag layer used for 180 -200 mm slab casting at Tangshan stainless steel mill have been tested and studied. Results showed that as casting speed ≥1.5 m/min, in order to make the flux maintains ＂whole course liquid lubrication＂ in mold, the melting temperature of flux should be≤〈 1 049℃ with controlling melting speed （34±2）s; and the optimum thickness of liquid slag layer is 10 - 15 mm with slag viscosity0. 19 Pa·s.

关 键 词：连铸板坯 结晶器保护渣 高拉速 适用性 

分 类 号：TF777[冶金工程—钢铁冶金] TF341.6