Abstract
In this paper, the magnetic flux density (B) in a near-rectangular electromagnetic cold crucible (EMCC) that was designed for continuously melting and directional solidifying TiAl alloys was calculated using the finite element (FE) method. The distribution and characteristics of the magnetic field in the EMCC for various power input parameters were obtained. The results show that the magnetic field in this EMCC is quite non-uniform. The axial magnetic flux density (Bz) at the slit is obviously higher than that at other positions at the same height. Along the vertical direction, Bz presents a peak value at the middle of the induction coil. Additionally, with an increase in the current intensity or a decrease in the frequency, Bz will correspondingly increase. In addition, the characteristics of the radial magnetic flux density (Br) at the slits, which gradually decreased from both sides to the middle of the coil, will be discussed.
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