| 摘要 |
PROBLEM TO BE SOLVED: To improve durability of a lower-punch used for in-magnetic field molding of a ferrite magnet.SOLUTION: A lower-punch 3 includes: a substrate part 21; a nonmagnetic material part 20; and a slide contact layer 23. The substrate part 21 comprises a magnetic material. The nonmagnetic material part 20 is arranged at an end of a side to confront an upper punch 2 of the substrate part 21 in a slide direction of the lower-punch 3, and comprises a nonmagnetic material. The slide contact layer 23 is disposed on an outer peripheral surface of the substrate part 21, and contacts an internal surface 8 of an inserting hole 7. In addition, the slide contact layer 23 comprise a magnetic material that is harder than the substrate part 21. |
