DUST CORE AND METHOD FOR MANUFACTURING SAME, AND REACTOR USING SAME

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a dust core for improving a core loss and DC superimposition characteristics. SOLUTION: This method for manufacturing a dust core carries out heat treatment after compressing and molding Fe-based soft magnetic powder configured by carrying out surface insulation treatment. High speed compression and molding is carried out at a compression and molding speed V of≥1 m/s by a hummer 17 or the like. Thus, it is possible to improve the density of a molded body and the density of a magnetic flux, and to reduce a coercive force and an iron loss. Furthermore, it is possible to manufacture a dust core where the linearity of a magnetization curve and DC superposition characteristics are improved. COPYRIGHT: (C)2007,JPO&INPIT