| 摘要 |
PROBLEM TO BE SOLVED: To provide a ring-shaped magnet for reducing a difference in rotational torque even when combined with an Alnico system and ferrite system magnet, and having sufficient temperature dependency on performance of an electron beam adjusting device, its manufacturing method, and an electron beam device using this magnet. SOLUTION: In this magnet for the electron beam adjusting device, a required magnetic pole is arranged on an inner diameter surface by annularly injectively molding a bonded magnet composition including magnetic powder including Alnico system magnetic powder or the Alnico system magnetic power and ferrite system magnetic powder by 10 to 40 volume %, including an inorganic substance included in the magnetic powder, a flame retardant, and a lubricant by 16 to 50 volume % of the whole volume in total, and having a residual part composed of a binder resin, the flame retardant, and an additive. |
