| Title |
Transformations : Analysis of Temperature and Phase Transformation History in Cooling Process of Hot Strip Rolling |
| Authors |
한흥남(Heung Nam Han),이재곤(Jae Kon Lee),박성호(Sung Ho Park),이경종(Kyung Jong Lee),진영술(Young Sool Jin),권오준(Oh Joon Kwon) |
| ISSN |
1738-8228(ISSN), 2288-8241(eISSN) |
| Abstract |
Temperature and phase transformation behaviour during cooling process in hot strip rolling is very important, because this determines the mechanical properties of hot-rolled steel products. This paper describes a development of a temperature calculation model based on the finite element method for a cooling process in hot strip rolling. The model was coupled with a thermodynamic analysis of Fe-C-Mn-Si system using a two-sublattice model and a phase transformation kinetics model using JMA equation and the additivity rule. Using the developed model, temperature and phase histories of hot-rolled steels on run-out table(ROT) and during air-cooling after coiling were calculated. From these analyses, suitable cooling pattern on ROT to produce quality hot coils such as TRIP and high carbon steels could be designed. |