TITLE:
Mold Thermo-Mechanical Rigidity Criterion for Surface Quality of Continuous Casting of Steel
AUTHORS:
Mostafa Omar El-Bealy
KEYWORDS:
Continuous Casting of Steel; Surface Quality; Solid Shell Resistance
JOURNAL NAME:
Materials Sciences and Applications,
Vol.4 No.1,
January
24,
2013
ABSTRACT: A theoretical investigation of heat flow, solidification and solid shell resistance “Ic” has been undertaken by using a mathematical model and previous plant trials. The ultimate purpose is to develop operating conditions and therefore to improve the surface quality for continuously cast steel slabs. A new simple criterion called mold thermomechanical rigidity “MTMR” has been proposed to evaluate and to improve these purposes. The parameters of MTMR and its non-dimensional number which use to control the surface defects are present in this investigation. Previous plant trails of slab surface defects formation have been investigated thermo-mechanically with this criterion. The predications show that this criterion is very sensitive of operating parameters and is a significant qualitative tool to evaluate the surface quality. From examination of the behavior of MTMR, the susceptibility and mechanism of surface defects formations with MTMR have been primarily discussed.