| 摘要 |
PROBLEM TO BE SOLVED: To provide a metal melting method capable of effectively agitating molten metal, and capable of shortening a melting time, in a metal melting method for heating and melting a metal material arranged on a hearth.SOLUTION: In a metal melting method for heating and melting a metal material M arranged on a hearth 2, an AC magnetic field is impressed on molten metal M formed by heating the metal material, and a step is executed for repeating reversal in the magnetic field direction, and the molten metal on the hearth is rotated by application of the AC magnetic field, and the rotational direction is switched in a predetermined period by the reversal in the magnetic field direction.SELECTED DRAWING: Figure 1 |
