| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method and an apparatus with which a plurality of steel balls can collectively be induction-heated while preventing the melted stickiness with a spark of both of the steel balls. <P>SOLUTION: After forming an insulating film 5 on the surfaces of the steel balls 1 or after mixedly charging the insulating particles in the intervals among the steel balls, the plurality of the steel balls is lumply heated while stirring in the magnetic flux generated with the induction-heating coil, and further, while rotating the steel balls 1 so as not to coincide the direction of the magnetic flux generated with the induction-heating coil 2 with the rotating axis, the steel balls 1 are induction-heated. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
