Design principles of high carbon steel liquid-solid hybrid mold flux for thin slab casters

Research output: Contribution to conferencePaper

Abstract

Today's 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.

Original languageEnglish
Pages568-571
Number of pages4
Publication statusPublished - 2015 Jan 1
Event6th International Congress on the Science and Technology of Steelmaking, ICS 2015 - Beijing, China
Duration: 2015 May 122015 May 14

Other

Other6th International Congress on the Science and Technology of Steelmaking, ICS 2015
CountryChina
CityBeijing
Period15/5/1215/5/14

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Metals and Alloys

Cite this

Sohn, I. (2015). Design principles of high carbon steel liquid-solid hybrid mold flux for thin slab casters. 568-571. Paper presented at 6th International Congress on the Science and Technology of Steelmaking, ICS 2015, Beijing, China.