| 摘要 |
PURPOSE:To obtain a magnetic path material having strong coupling strength with an Al material by adding nonmagnetic metal powder and thermosetting resin powder as residue to specific amount of particulate or flakelike magnetic powder, mixing, compression molding and thermally curing the mixture. CONSTITUTION:Nonmagnetic metal powder 12 and thermosetting resin 13 are added as residue to 60-95wt.% of particulate or flakelike magnetic powder 11, mixed, compression molded and thermally cured. Magnetic powder having a particle size of 50-200mum is employed as the powder 11, Al powder is used as the metal 12, and epoxy resin powder is used as the powder 13. Since a magnetic member 14 having high strength is formed and a holder 15 is then formed with Al powder, the dimensional accuracy of the powder 14 is obtained. Since the thermosetting resin is contained in the magnetic path material, adhesive properties with the holder 15 are desirable, and peeling is prevented. When the Al power is used as the powder 12 to be filled in the magnetic path material, a magnetic material can be reduced in weight together with the resin 13, a load to be applied to a central shaft is reduced, and irregularity in characteristics is also decreased. |
