| 摘要 |
<p>PROBLEM TO BE SOLVED: To ensure magnetizing one end of a rotary shaft of a body of rotation, reduce magnetization of a fastened member, ensure magnetizing one end of the rotary shaft to which the fastened member is fastened by a fastening member, and reduce magnetization of the fastening member.SOLUTION: There is provided a magnetization device 300 for magnetizing one end of a rotary shaft 204 of a body of rotation 214 in which a compressor impeller 208 is fastened to one end of the rotary shaft 204 by a nut 210. The magnetization device 300 includes: a magnetization unit 302 for generating magnetic fields opposite in direction from a magnetization surface 302a; and a shield portion 304 mounted on the magnetization surface 302a of the magnetization unit 302, and including a through-hole 304c having a diameter larger than an outside diameter of one end of the rotary shaft 204 and smaller than an outside diameter of the nut 210, one end of the rotary shaft 204 being inserted into the through-hole 304c so that the magnetic fields which is generated by the magnetization unit 302 and is mutually opposite in direction can reach one end of the rotary shaft 204 when the magnetization unit 302 magnetizes one end of the rotary shaft 204.</p> |
