| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for magnetizing an object to be magnetized, in such a pattern that a plurality of magnetic poles are formed at very short intervals on the endless peripheral surface of the object, and a high magnetic flux density is obtained and magnetic particles attracted to the endless peripheral surface of the object can be removed easily. SOLUTION: An object to be magnetized is magnetized, in such a way that a magnetizing head is positioned and the head comes into contact with or approach close to the peripheral surface of the object and the two magnetizing poles of the head face opposite the object in the peripheral direction and supplying a magnetizing current to the electrode, in a state with the object and head standing still. Then, after the magnetizing poles are moved in the peripheral direction by a magnetizing interval D1, a magnetizing current in the opposite direction is supplied to the poles. The supply of the electrical currents is repeated at the prescribed magnetizing intervals D1. The magnetizing interval D1 is adjusted to be 5W or higher, when the interval between the magnetizing poles of the head is set at W or two (T+2W), when the interval between the adjacent magnetic poles of the same polarity of the formed magnetic poles is T. When the interval between the adjacent magnetic poles having different polarities is L, an interval W between the two magnetizing poles of the head is adjusted to 0.4<=W<=0.6. |
