Manufacturing method for magnetic core of iron-based nanocrystalline high-power switching power supply transformer

The invention discloses a manufacturing method for a magnetic core of an iron-based nanocrystalline high-power switching power supply transformer. The method comprises the following specific steps: performing vacuum isothermal annealing on an iron-based amorphous ribbon to obtain a nanocrystalline r...

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Bibliographic Details
Main Author LI XINMAN
Format Patent
LanguageChinese
English
Published 02.04.2014
Subjects
BASIC ELECTRIC ELEMENTS
CASTING
ELECTRICITY
INDUCTANCES
MAGNETS
MAKING METALLIC POWDER
MANUFACTURE OF ARTICLES FROM METALLIC POWDER
PERFORMING OPERATIONS
POWDER METALLURGY
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
TRANSPORTING
WORKING METALLIC POWDER
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Summary:The invention discloses a manufacturing method for a magnetic core of an iron-based nanocrystalline high-power switching power supply transformer. The method comprises the following specific steps: performing vacuum isothermal annealing on an iron-based amorphous ribbon to obtain a nanocrystalline ribbon; crushing the obtained nanocrystalline ribbon to obtain nanocrystalline metal powder; performing phosphorization and insulated coating treatment on the nanocrystalline metal powder in sequence, adding zinc stearate and silicon carbide micro powder, and performing compression molding. After phosphorization is performed on the components of ammonium molybdate, phosphoric acid, diammonium hydrogen phosphate and sodium fluoride in the nanocrystalline metal powder, a layer of phosphate film is formed on the surface of the powder, so that the frequency characteristic of the magnetic core can be improved remarkably, and the high-frequency magnetic loss is reduced; after the phosphorization, alloy powder is coated in
Bibliography:Application Number: CN20131640303