Design Principles of High Carbon Steel Liquid-Solid Hybrid Mold Flux for Thin Slab Casters
Todays high productivity CSP(compact-strip process)thin slab casters with a funnel mold design require stringent mold flux performance in the mold compared to the typical thick slab casters.Issues related to un-optimized mold flux properties result in surface defects including cracks and flux infiltration.In this study,a novel mold flux for high carbon steels have been developed to increase existing casting speeds and improve quality,where the liquid-solid co-existing zone beyond the break temperature of the flux were broadly extended to maximize the liquid flux layer below the meniscus and evenly increase the liquid lubrication of the partially solidified shell in the funnel type thin slab caster.Crystallization behavior using the CLSM(confocal laser scanning microscope)and a flux disc simulator was used.Viscosity of the flux was measured and optimized using a rotating bob and spindle rheometer assembly.Utilizing the fundamental data of crystallization and viscosity,trials in commercial thin slab casters with the developed liquid-solid hybrid mold flux were implemented with promising results.
liquid-solid hybrid mold flux funnel type mold thin slab caster crystallization viscosity
Il SOHN
Associate Professor,Materials Science and Engineering,Yonsei University,Seoul Korea,120-749
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
568-571
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）