Thermal Simulation of Solidification Process during Continuous Steel Casting
In most parts of a continuous casting slab,the heat transfer is,in effect,one-directional,so the solidification of continuous casting steel slab can be considered a locally-stabilized unidirectional process.But during solidification,both the dendritic growth rate (v) and the temperature gradient in front of solid/liquid interface (GL) vary continuously.Based on the similarity of heat conduction,we proposed a thermal simulation method and a device for the solidification process of continuous steel casting.The device uses the horizontal unidirectional solidification method to simulate the solidification of a unit in continuous steel billet or slab.By controlling the temperature gradient and pulling rate of furnace,to achieve the liquid temperature gradient and dendrite growth rate in continuous casting.The pouring temperature,stretching rate and cooling water flux on cooling surface could be controlled precisely during the simulating experiments.In addition,the effect of pouring temperature on solidification of a ferritic stainless steel was investigated using this device.The results showed a low pouring temperature is benefit to reduce the proportion of columnar grain zone.
continuous casting solidification thermal simulation
Honggang ZHONG Qijie ZHAI Jie NI Wen QUAN
School of Materials Science and Engineering,Shanghai University,Shanghai 200072,China
国际会议
the 6th International Congress on the Science and Technology of Steelmaking,ICS2015(第六届国际炼钢科技大会)
北京
英文
416-419
2015-05-12（万方平台首次上网日期，不代表论文的发表时间）