| 摘要 |
<p>PURPOSE:To prevent scattering of molten metal resulted from the rotation onto the surroundings by uniformly achieving the high frequency induction heating of the lump metal in the levitation condition, and melting the metal lump immediately before the lump metal is melted by the high frequency induction heating under the condition where the rotation of the lump metal is stopped. CONSTITUTION:The intensity of the eddy current flowing in the surface of a lump metal 9 is partially differentiated by generating the variation in the magnetic field generated in a cylindrical body 11 by using the metallic cylindrical body 11 where the sharing ratio of slits 16 in the circumferential direction is differentiated. Then, the condition where the lump metal 9 is heated in the in-air float heating manner while the lump metal being rotated and the condition where the lump metal is heated in the levitation heating manner while the lump metal being stopped are selectively switched by adjusting the relative rotative position of the cylindrical body 11 relative to a high frequency induction heating coil 12.</p> |
