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

Inactive Publication Date: 2007-02-14
李志平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the problem that ideal demagnetization cannot be obtained when the magnetic field orientation is completed in the prior art, the present invention provides an orientation molding device for anisotropic bonded rare earth permanent magnets, which can not only provide a high degree of orientation magnetic field strength, but also avoid the Problems caused by residual magnetization

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  • Anisotropic binding rare earth permanent magnet oriontation shaping device
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  • Anisotropic binding rare earth permanent magnet oriontation shaping device

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specific Embodiment approach 1

[0010] Specific embodiment one: (see Fig. 1, Fig. 2, Figure 6 ) This embodiment consists of upper die punch 1, lower die punch 2, die sleeve 3, coil 4 and current source 5, the lower end of upper die punch 1 and the upper end of lower die punch 2 are respectively placed in the mold The upper and lower parts of the sleeve 3, the outside of the mold sleeve 3 is wound with a coil 4, the two ends of the coil 4 are respectively connected to the two terminals of the current source 5, and the current generated by the current source 5 is passed into the coil 4 A sinusoidal oscillating damping magnetic field is formed.

specific Embodiment approach 2

[0011] Specific embodiment two: (referring to Fig. 3) the difference between this embodiment and specific embodiment one is that it also comprises the 3rd electric capacity 6 and No. Between the inner winding surfaces of the coil 4, the ninth coil 7 and the third capacitor 6 form a closed loop; the current source 5 is a pulse power supply. Other compositions and connections are the same as in the first embodiment.

specific Embodiment approach 3

[0012] Specific implementation mode three: (see Figure 4 ) The difference between this embodiment and the specific embodiment one is that the current source 5 is composed of a pulse power supply 51, a first mutual induction solenoid 52, and a first capacitor 53, and the first mutual induction solenoid 52 is formed by the first The primary coil 52-1 is composed of the first secondary coil 52-2, the first end of the first primary coil 52-1 is respectively connected to the two output ends of the pulse power supply 51, and one end of the first secondary coil 52-2 is connected to the first One end of the capacitor 53 is connected; the two ends of the coil 4 are respectively connected to the other end of the first secondary coil 52 - 2 and the other end of the first capacitor 53 . Other compositions and connections are the same as in the first embodiment.

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/04
Inventor 李志平
Owner 李志平
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