Material and Microstructure Simulation as a Means for the Design of CSP(R) Plants
The hot-tearing models of Kim/1/and Rappaz (RDG-model) /3,4/ were implemented. The necessary micro-segregation analyses as a function of the cooling rate were provided by the commercial software DICTRA. Both models were applied to the continuous casting process of a pipeline steel API X70. The solidification-related parameters such as the velocity of the solidification front were evaluated from a simulation of the temperature field using a finite difference model. The results show that both models are suitable for characterizing the hot-cracking susceptibility in the surface region of the slab exhibiting a colunmar microstructure. Furthermore, the RDG-model can be applied to make predictions for the inner regions of the slab as long as no transition from columnar to equiaxed solidification occurs. Further, the result of a regression model for solidification-related parameters on the basis DICTRA simulations is presented.
hot tearing longitudinal surface cracks continuous casting pipeline steel microsegregation DICTRA
Uwe Grafe Ingo Schuster
SMS Siemag AG, Eduard-Schloemann Str.4, 40237 Düsseldorf
国际会议
2009年薄板坯连铸连轧国际研讨会(TSCR 2009)(2009 International Symposium on Thin Slab Casting and Rolling)
南京
英文
216-221
2009-05-13（万方平台首次上网日期，不代表论文的发表时间）