| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite magnet, its manufacturing apparatus, and manufacturing method improved in magnetic characteristics. SOLUTION: An extrusion molding machine 10 is one for performing extrusion molding of a molding material, that is a material of a composite magnet, in its state oriented by a magnetic field, wherein a predetermined magnetic field is applied to a molding material 22 flowing through the inside and there is provided a magnetic field orientated metal mold 18 with a fluorine coated layer 26 formed on at least part of a contact surface with the molding material 22. Thus, the inventor found that there is significantly reduced a frictional coefficient between the magnetic field oriented metal mold 18 and the molding material 22, flowing through the thereinside owing to the fluorine coated layer 26 formed in the magnetic field oriented metal mold 18. More specifically, according to the extrusion molding machine 10, there is reduced the frictional coefficient of the molding material 22 in the magnetic field oriented metal mold 18 that ensures manufacturing of a magnet with high magnetic characteristics. COPYRIGHT: (C)2009,JPO&INPIT
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