| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of manufacturing a composite magnetic member capable of forming a weakly magnetic part with suppressed dispersion of magnetic characteristics on all connection parts by uniformizing reaching temperatures of the plurality of connection parts by solving the problem of differences among the reaching temperatures generated on a connection part basis, in applying a high frequency to a ferromagnetic material for a composite magnetic member. <P>SOLUTION: This method is used for manufacturing a composite magnetic member formed with an inner space part in a plate-like ferromagnetic material, and having, on an outer peripheral side of the ferromagnetic material, a plurality of connection parts each having a width reduced by the inner space part and formed with a non-melted weakly-magnetic part. In this method of manufacturing a composite magnetic member, the ferromagnetic material is preheated at a temperature of 600-900°C, and then the plurality of connection parts are caused to generate heat by itself by applying high frequencies thereto by a high-frequency coil arranged by surrounding the outer periphery of the ferromagnetic material to form the weakly-magnetic parts each having a metal organization containing non-melted austenite as a main constituent in the connection parts. <P>COPYRIGHT: (C)2011,JPO&INPIT |
