| 摘要 |
PURPOSE:To manufacture an inductance element which can be mass-produced by winding a coil around a flanged core to make an original inductance element, impregnating the element with a composite magnetic material and removing the unrequired portion by dipping the element in a solvent. CONSTITUTION:A coil 3 is wound around a flanged core 2 one flange 2a of which is so machined as longer than the other flange 2b and then the outer surface of the flange 2a is stuck on a tape 12. After the core 2 is transferred to the position above a dipping bath 14, it is lowered into the bath until the lower surface of the flange 2a is dipped in a dipping solution 16 which has been prepared by mixing a powdered magnetic material and a resin and dissolving the solution thereby obtained in a solvent to prepare a composite magnetic solution having the optimum viscosity. By lifting the dipped body up, the core coated with the composite solution at the portions 4, 4' is obtained but the unrequired portion 4' is promptly removed by a chemical action with a solvent 20 in a washing bath 18 and also by the ultrasonic vibration supplied from an ultrasonic generator 22. |
