| FINE SINTER CO., LTD. Patent applications |
| Patent application number | Title | Published |
|---|
| 20110024000 | POWDER FOR DUST CORE AND METHOD FOR PRODUCING THE SAME - A powder for a dust core comprising a silicon-containing layer formed within a depth of less than 0.15 D from the surface of the surface layer of a soft magnetic metal powder having a particle diameter D and a method for producing the same are provided. | 02-03-2011 |
| 20100271158 | POWDER FOR MAGNETIC CORE, METHOD FOR MANUFACTURING POWDER FOR MAGNETIC CORE, AND DUST CORE - A method for manufacturing a powder for a magnetic core including at least a process of performing a siliconizing treatment on a surface of an iron powder containing elemental carbon. In the process of siliconizing treatment, a powder containing at least a silicon dioxide is brought into contact with the surface of the iron powder, elemental silicon is detached from the silicon dioxide by heating the powder of silicon dioxide, and the siliconizing treatment is performed by causing the detached elemental silicon to permeate and diffuse into a surface layer of the iron powder. The invention provides a method for manufacturing a powder for a magnetic core, by which loss reduction is achieved. | 10-28-2010 |
| 20090090435 | Process for Producing Magnetic Powder and Process for Producing Dust Core - 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. | 04-09-2009 |
