| 摘要 |
PURPOSE:To obtain a formed part of a uniform density, and to give an orienting property to said body by packing a flexible rubber tube with a magnetic powder, or providing a magnetic metal partition plate and a core rod and packing and choking them, and compressing the rubber tube by a hydrostatic pressure in a state that a magnetic field has been applied in the axial direction. CONSTITUTION:A lower punch 6 is installed to a urethane rubber table 7, and it is packed with a magnetic powder 15. It is charged into a rubber press body 10, and an upper punch 5 is attached. The rubber press body 10 is installed between magnetic field load use coils 1 of a frame 2 through a yoke 4. In a state that a magnetic field has been applied to the axial direction of the rubber tube, the rubber tube 7 is compressed and formed by applying a hydrostatic pressure 16. The pressure is eliminated after demagnetization, the rubber press body 10 is fetched and a compressed formed body is discharged. The formed body has a homogeneous density, has a magnetic orienting property, and becomes a non-defective unit. In this regard, the packed powder 15 can also be compressed and formed by providing a magnetic metal partition plate, a core rod, etc. |
