Thermal-force coupling analysis of slag entrapment on surface of continuous casting bloom
Slag entrapment in the continuous casting bloom has a significant effect on the sub-skin temperature,shell thickness,first principal stress and equivalent stress.Based on the temperature inheritance algorithm,a two-dimen-sional transient thermal conductivity model of steel solidification was established by using ANSYS finite element software to analyze the behavior of slag entrapment on bloom heat transfer and stress.In common 1/4 position from the center of the continuous casting bloom,the 10 mm wide and 4 mm deep protective slag is usually found.The study shows that with the slag entrapment,the sub-skin temperature rises by 60 ℃ in average,the shell thickness becomes 3.3 mm,the first principal stress distribution is uneven and locally smaller,and the equivalent stress be-comes smaller.
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