Anisotropic binding rare earth permanent magnet oriontation shaping device

A technology of rare earth permanent magnets and orientation molding, which is applied in the direction of molding indenters, etc., can solve the problems of not being able to obtain ideal demagnetization, and achieve the effects of increasing unit weight density and uniformity, improving magnetic properties, and low-cost manufacturing performance
CN1911622AInactive Publication Date: 2007-02-14李志平
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
李志平
Publication Date
2007-02-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The anisotropic adhered RE permanent magnet orientating and forming apparatus includes an upper molding punch head, a lower molding punch head, a mold sleeve, a winding and a current source. The lower end of the upper molding punch head and the upper end of the lower molding punch head are set inside the mold sleeve, the winding is wound outside the mold sleeve, the current source is connected across the winding to form amplitude reducing sinusoidal oscillation magnetic field. The amplitude reducing sinusoidal oscillation magnetic field can complete both magnetic orientation process and ideal demagnetization process during orientating and forming the mixture of magnetic alloy powder and binding resin inside the mold sleeve, so that the present invention can produce anisotropic adhered RE permanent magnet in low cost.
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Description

technical field

[0001] The invention relates to an orientation molding device for anisotropic bonded rare earth permanent magnets. Background technique

[0002] The current anisotropic permanent magnets are roughly divided into sintered magnets and bonded magnets. When manufacturing the above-mentioned permanent magnets, the powder needs to be oriented by a magnetic field and compressed into shape. One of the main ways to manufacture anisotropic bonded magnets is by compression molding a mixture of magnet alloy powder and a polymer or other binder in a field-oriented compression molding apparatus.

[0003] The formation of the magnetic anisotropy of the anisotropic bonded magnet is completed by the orientation of the anisotropic magnet powder in the magnetic field forming process, and the magnetic material manufacturing process requires the material to have no residual magnetism, so the orientation of the anisotropic material Finally, it must be completely demagnetized, whi...

Claims

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