Abstract
A three-dimensional mathematical and physical model coupling with the heat transfer and the flow of molten metal in the centrifugal casting of the high speed steel roll was established by using CFD software FLUENT. It can be used to analyze the distribution of the temperature filed and the flow filed in the centrifugal casting under the gravity, the electromagnetic stirring force and the centrifugal force. Some experiments were carried out to verify the above analysis results. The effects of the electromagnetic force on the centrifugal casting process are discussed. The results showed that under the 0.15 T electromagnetic field intensity, both the absolute pressure of metal flow to mold wall and the metal flow velocity on the same location have some differences between the electromagnetic centrifugal casting and the centrifugal casting. Numerical results for understanding the electromagnetic stirring of the centrifugal casting process have a guiding significance.
Highlights
High speed steel roll has been widely used in the rolling production because of its excellent wear resistance and the better performance than the traditional steel roll [1,2]
A three-dimensional model coupling of the heat transfer and the flow of the molten metal in the centrifugal casting of the high speed steel roll is established by the finite volume method
In the electromagnetic centrifugal casting process, molten metal is under gravity, centrifugal force and electromagnetic stirring force generated by electromagnetic induction
Summary
High speed steel roll has been widely used in the rolling production because of its excellent wear resistance and the better performance than the traditional steel roll [1,2]. The flowing of the molten metal and the heat transfer for it are analyzed independently; suppose that the gravity can be neglected and the molten metal fills cast instantneously [3,4,5]. These simplifications and assumptions make the large gap between numerical results and true values. A three-dimensional model coupling of the heat transfer and the flow of the molten metal in the centrifugal casting of the high speed steel roll is established by the finite volume method. The results can provide the theoretical evidence for setting the parameter and improving the cast quality
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