Powder core powder manufacturing method, powder magnetic core powder using powder core powder manufactured by the powder core manufacturing method, and powder core powder manufacturing apparatus

摘要

To provide a method of manufacturing a powder for dust core capable of preventing generation of secondary particles during a siliconizing treatment and improving quality and productivity of the powder for dust core, a dust core made of the powder for dust core manufactured by the method, and an apparatus for manufacturing the powder for dust core, of a powder mixture (23) comprising a soft magnetic metal powder (21) and a powder for siliconizing (22) including silicon dioxide, only the soft magnetic metal powder (21) is heated by induction heating to transmit heat from the surface of the soft magnetic metal powder (21) to the powder for siliconizing (22), thereby releasing a silicon element from the powder for siliconizing (22) and diffusing and impregnating the silicon element into the surface of the soft magnetic metal powder (21) to form a silicon impregnated layer.