Distribution characteristic of magnetic field in cold crucible for induction melting

Experiments were performed using the method of small coil without load to measure the magnetic field distribution in a cold crucible using an induction skull melting (ISM) furnace. It was shown that magnetic induction intensity can be effectively improved by increasing the input power. Along the radial direction inside the cold crucible, magnetic induction intensity was the strongest at the edges and gradually attenuated from the edges to the center. Along the axial direction, magnetic induction intensity was the strongest at the center and gradually attenuated from the center to the edges. The magnetic field was calculated inside the coil without cold crucible. It was found that the crucible does not influence the distribution of the magnetic field, but due to the crucible's electromagnetic shield effect, magnetic induction intensity reduced about 50% than it should without the crucible. These experimental results provide effectual basis for induction melting in a cold crucible.