发明名称 |
Verfahren zur Herstellung eines Magnetpulvers und Verfahren zur Herstellung eines Pressmassekerns |
摘要 |
A process for producing a magnetic powder which is sufficiently reduced in core losses such as iron loss and hysteresis loss and has sufficient strength; and a process for producing a dust core. The process for magnetic powder production comprises using a magnetic-material powder produced by water atomization as a raw powder and subjecting the powder to spheroidizing in which a mechanical impact is applied to the powder to spheroidize the powder particles. After the spheroidizing, the powder is subjected to a grain enlarging treatment in which the powder is annealed at a temperature not lower than the austenite transformation point. The process for dust core production comprises compacting the magnetic powder thus produced. |
申请公布号 |
DE112007001311(T5) |
申请公布日期 |
2009.04.09 |
申请号 |
DE20071101311T |
申请日期 |
2007.05.29 |
申请人 |
FINE SINTER CO. LTD.;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
HOSHINA, EISUKE;YAMAGUCHI, TOSHIYA;KAWASHIMA, KAZUHIRO |
分类号 |
H01F1/20;B22F1/00;C21D6/00;H01F27/255;H01F41/02 |
主分类号 |
H01F1/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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