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Manufacturing method of dry-pressed anisotropic ferrite magnetic powder
The invention discloses a manufacturing method of dry-pressed anisotropic ferrite magnetic powder which is uniformly dispersed and has effectively improved BH max. The manufacturing method comprises the following steps of dissolving a binder by an organic solvent, spraying the solution into a small amount of magnetic powder, carrying out drying to obtain mother powder, mixing the mother powder and the magnetic powder, adding an organic dispersant into the mixed powder, carrying out stirring, crushing the mixture by a high-speed pulverizer, sieving the powder, and processing the powder to form the dry-pressed anisotropic ferrite magnetic powder. The manufacturing method can effectively improve distribution uniformity of the magnetic powder in the magnet, improve permanent magnetism material BH max, and especially improve residual flux density (Br) and BH max. The dry-pressed anisotropic ferrite magnetic powder obtained by the manufacturing method has good performance consistency and no black points, does not adhere to the wall easily and is conducive to batch production.
Manufacturing method of dry-pressed anisotropic ferrite magnetic powder
The invention discloses a manufacturing method of dry-pressed anisotropic ferrite magnetic powder which is uniformly dispersed and has effectively improved BH max. The manufacturing method comprises the following steps of dissolving a binder by an organic solvent, spraying the solution into a small amount of magnetic powder, carrying out drying to obtain mother powder, mixing the mother powder and the magnetic powder, adding an organic dispersant into the mixed powder, carrying out stirring, crushing the mixture by a high-speed pulverizer, sieving the powder, and processing the powder to form the dry-pressed anisotropic ferrite magnetic powder. The manufacturing method can effectively improve distribution uniformity of the magnetic powder in the magnet, improve permanent magnetism material BH max, and especially improve residual flux density (Br) and BH max. The dry-pressed anisotropic ferrite magnetic powder obtained by the manufacturing method has good performance consistency and no black points, does not adhere to the wall easily and is conducive to batch production.
Manufacturing method of dry-pressed anisotropic ferrite magnetic powder
YE HUA (author) / YAO GAN (author) / WEI XIAOYANG (author) / HU LIANGQUAN (author) / DING BOMING (author) / FAN LIANGJUN (author)
2015-04-08
Patent
Electronic Resource
English
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