Modelling of Permanent Magnetic Field for Its Application in Electroslag Remelting

A high-efficiency and low-power consumption permanent magnetic technology was proposed to modify the poor control of structure and primary carbide of high-carbon stainless steel. One key point of the better application of permanent magnetic technology is the generation of magnetic field with stronger intensity and more even distribution using less magnet. In this study, the permanent magnetic field under varying arrangement, thickness, number, and arc degree of magnets was modelled. The results indicated that adjacent magnets with same polarization mode have stronger magnetic field intensity. All the greater magnet thickness, greater arc degree of single magnet and less magnet number under same sum of total arc degree can increase field intensity. The arrangement mode of two 40 mm-thickness magnets with arc degree of 120 and different polarization mode among more than 20 arrangement modes has strongest field intensity and widest range of intensive magnetic flux density along radial direction.