Papers by Author: Xiang Jie Wang

Abstract: On the basis of conventional level casting, low frequency electromagnetic field is applied during conventional level casting process. Effects of low frequency electromagnetic field on melt flow, macrostructure and microstructure have been studied. The experiment is performed on the Al-4.5% Cu alloy, and the experimental results show that with the application of the low frequency electromagnetic field, the macrostructure and microstructure are changed greatly. The reasons for the low frequency electromagnetic field changing the macrostructure and microstructure of the ingot were summarized.

Abstract: The rules of the distribution of magnetic field were carried out by numerical simulation. The distribution of magnetic field was got, and the effects of current intensity and frequency on the distribution of magnetic field were analyzed by constructing three-dimensional finite element model and using ANSYS software which is a kind of commercial FEM analysis software. The results show that the intensity of magnetic field is proportional to current intensity, magnetic field is mainly localized in the surface region of liquid melt and there is a notable edge effect in the corner.

Abstract: On the basis of conventional hot-top casting and Casting, Refining and Electromagnetic process, a lower frequency electromagnetic field was applied during the hot-top casting process. A comprehensive two-dimensional (2-D) mathematical model based upon the ANSYS and FLUENT has been developed for the computation of the electromagnetic field, solidification, fluid flow and heat transport during conventional and low frequency electromagnetic hot-top casting processes. The results show that there is a good agreement between the experimental results and calculated results.