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Ferrite magnetic core blank body and preparation method thereof, and ferrite magnetic core and preparation method of ferrite magnetic core
The invention discloses a ferrite magnetic core blank body and a preparation method thereof, a ferrite magnetic core and a preparation method of the ferrite magnetic core. The preparation method of the ferrite magnetic core blank body comprises the steps: (1) blending 70%-95% of a ferrite powder and 5%-30% of a binder, and thus obtaining a feedstock for injection molding, wherein the ferrite powder includes 60%-70% of iron oxide, 10%-20% of nickel oxide, 2%-10% of copper oxide and 15%-25% of zinc oxide, and the binder comprises 80%-90% of polyoxymethylene, 3%-6% of high-density polyethylene, 3%-6% of an ethylene-vinyl acetate copolymer, 2%-5% of paraffin, and 2%-5% of zinc stearate; and (2) carrying out injection molding with the feedstock, and thus forming the ferrite magnetic core blank body. The preparation method not only improves the consistency of the magnetic core, the feeding flexibility is good, during injection molding of the ferrite magnetic core blank body, the product and a back material are not broken, demoulding is easy, and a mold is not required to be often cleaned, so that full-automatic production can be realized, the labor cost is greatly reduced, and the production efficiency is improved.
Ferrite magnetic core blank body and preparation method thereof, and ferrite magnetic core and preparation method of ferrite magnetic core
The invention discloses a ferrite magnetic core blank body and a preparation method thereof, a ferrite magnetic core and a preparation method of the ferrite magnetic core. The preparation method of the ferrite magnetic core blank body comprises the steps: (1) blending 70%-95% of a ferrite powder and 5%-30% of a binder, and thus obtaining a feedstock for injection molding, wherein the ferrite powder includes 60%-70% of iron oxide, 10%-20% of nickel oxide, 2%-10% of copper oxide and 15%-25% of zinc oxide, and the binder comprises 80%-90% of polyoxymethylene, 3%-6% of high-density polyethylene, 3%-6% of an ethylene-vinyl acetate copolymer, 2%-5% of paraffin, and 2%-5% of zinc stearate; and (2) carrying out injection molding with the feedstock, and thus forming the ferrite magnetic core blank body. The preparation method not only improves the consistency of the magnetic core, the feeding flexibility is good, during injection molding of the ferrite magnetic core blank body, the product and a back material are not broken, demoulding is easy, and a mold is not required to be often cleaned, so that full-automatic production can be realized, the labor cost is greatly reduced, and the production efficiency is improved.
Ferrite magnetic core blank body and preparation method thereof, and ferrite magnetic core and preparation method of ferrite magnetic core
ZHU YANJUN (author) / NIE MIN (author)
2015-07-22
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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