Formation Mechanism and Influence Factors of the Sticker between Solidified Shell and Mold in Continuous Casting of Steel

Abstract

Based on the stress characteristics of primary solidified shell in the mold, formation model of the shell’s sticker is established according to the theory of mechanical strength, and the mechanism and internal factors of the shell tearing are analyzed by the model. Furthermore, based on the measured data of many stickers in a slab-continuous caster, the influence of casting process factors on the sticker is analyzed statistically. The possible causes for the stickers in the studied caster are discussed. The results provide a reference for optimizing the continuous casting production process and effectively preventing the occurrence of the sticker from the source.

Keywords

• continuous casting
• sticker breakout
• mold
• solidified shell
• casting process factors