| 摘要 |
PURPOSE:To alleviate the stress applied to a wound body when resin is hardened, to reduce the deterioration of magnetic characteristics, and to obtain the magnetic core of low iron loss having excellent magnetic characteristics by a method wherein a resin molding work is performed while tensile stress is applied to the wound body of amorphous magnetic thin strip. CONSTITUTION:A resin molding is performed while tensile stress is being applied to the wound body whereon an amorphous magnetic thin strip having magnetostriction is wound around. For example, an elastic body 1 such as rubber, having the outside diameter a little smaller than the inside diameter, is inserted in the inner side of the wound body 2 of amorphous thin strip, and when compression stress (a) is applied on both upper and lower faces of the elastic body 1, the diameter of the elastic body 1 is increased in the center part, and as a result, the thin strip is subjected to tensile stress (b). Accordingly, a magnetic core on which the deterioration of magnetic characteristics is reduced can be obtained by performing a resin molding under the above-mentioned condition. |
