| 摘要 |
PURPOSE:To contrive improvement in rigidity of the titled core without deteriorating the low iron loss characteristics of the amorphous alloy thin strip used thereon by a method wherein specific tensile force is mechanically added in the longitudinal direction of the block pieces laminated on a plurality of amorphous magnetic alloy thin strips, and after resin has been coated on the block pieces under the above-mentioned condition, a plurality of sets of said alloy thin strips are laminated. CONSTITUTION:A laminated block piece 2 is formed by laminating a plurality of sheets of amorphous magnetic alloy thin strip 1 which is cut into the prescribed length. Then, after an annealing process has been performed on the block piece 2 while a magnetic field is added in a non-oxidizing atmosphere, the tensile force P which is larger than the compressive stress, generating on the thin strip 1 due to the difference between the coefficient of thermal expansion of the thin strip 1 and the thermal expansion coefficient of the resin to be coated on the block piece 2, is mechanically added to the block piece 2 in its longitudinal direction. Then, under the condition wherein tensile force is added to the block piece 2, the insulating resin 4 such as urethane resin, epoxy resin or the like is coated on the whole surface, and it is hardened by natural drying. |
