Title:
磁性コアの製造方法
Document Type and Number:
Japanese Patent JP6580817
Kind Code:
B2
Abstract:
The present invention provides a magnetic core having insulating properties, and a method for manufacturing the magnetic core. Provided is a magnetic core manufactured by compression molding and subsequent thermal curing of an iron-based soft magnetic powder having a resin coating formed on particle surfaces thereof. The iron-based soft magnetic powder is one in which the particle surfaces have been coated with an inorganic insulator; the resin coating is an uncured resin coating formed by dry blending the powder with a thermosetting resin at a temperature equal to or greater than the softening point of the thermosetting resin and lower than the thermal curing initiation temperature of the resin; the compression molding is carried out by using a mold to produce a compression molded body; and the thermal curing is carried out at a temperature equal to or greater than the thermal curing initiation temperature of the thermosetting resin.
Inventors:
Takuji Harano
Hiroyuki Noda
Hiroyuki Noda
Application Number:
JP2014189903A
Publication Date:
September 25, 2019
Filing Date:
September 18, 2014
Export Citation:
Assignee:
ntn corporation
International Classes:
H01F41/02; B22F1/102; B22F1/103; B22F1/105; H01F1/26; H01F27/255; B22F1/05
Domestic Patent References:
| JP2002305108A | ||||
| JP2014072482A | ||||
| JP2011126120A1 |
Attorney, Agent or Firm:
Wake Manipulation
Wake Hikari
Wake Hikari