| 摘要 |
PROBLEM TO BE SOLVED: To improve attenuation, to prevent magnetization saturation even if a large current is applied, and to reduce the size by using an amorphous nanomicron crystal alloy as a magnetic material and heat-treating such a magnetic material at a predetermined temperature in a magnetic field of a nonoxidizing atmosphere. SOLUTION: A cylindrical magnetic material is formed by winding a thin band of an amorphous nanomicron crystal alloy (HNK), applying a magnetic field in a nonoxidizing atmosphere, heat-treating the material at 400-600 deg.C, and molding and encasing the resulting material using vinyl chloride (CL) after inserting a cable thereto. The cylindrical magnetic material is split into symmetrical segments in an axial direction, and these segments are bonded to each other with the cable clamped therebetween and with their bonding surfaces put together, after which the bonded segments are molded and encased with CL. Blanks from the HNK sheet are laminated and spot-welded. Four laminates 3 are assembled into a rectangular cylindrical member, spot-welded, and molded and encased with CL after inserting a cable. Two L-shaped members, each being formed by bonding and fixing two laminates 3, are bonded and fixed into a rectangular cylindrical member while clamping a cable therebetween. The cable is covered with CL with its periphery meshed with thin HNK strands.
|
