| 摘要 |
PURPOSE:To cure resin within an electromagnetic coil at a higher temperature than outside it by heating it both inside and outside at the same time. CONSTITUTION:A resin-impregnated electromagnetic coil 1 is provided in a heating furnace 7 through a shaft 8 which is rotated by motor 9. By bringing brushed 12, 12 to which a DC or AC voltage is applied into contact with a pair of slip rings 11, 11 and by connecting leading wires 4, 4 of the coil with the slip rings 11, 11, heating can be conducted at the inner part of the coil. And the coil 1 is heated from the outside by the heater 6 laid in the heating furnace. Thereby, voids are prevented from occurring, resin curing time is shortened and productivity is improved. |
