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Radial magnet ring and production method thereof

A magnetic ring and magnetic tile technology, which is applied in the manufacture of inductors/transformers/magnets, transformer/inductor magnetic cores, electrical components, etc., can solve the problem of inability to prepare high-performance radially oriented magnetic rings with large aspect ratios and the utilization of magnetic properties Improve efficiency, increase the volume of the magnetic ring, etc., to achieve the effect of improving the magnetic uniformity of the magnetic ring surface, making the processing difficult, and improving the strength of the magnetic ring

Active Publication Date: 2014-02-12
浙江东阳东磁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many technologies for directly producing radial magnetic rings, such as ZL200710106670.1, ZL01111509.2, and ZL00125615.7. These technologies can directly prepare integrated radial magnetic rings, but using these technologies to prepare large aspect ratios (h / Ф ≥1) When the magnetic ring is radially oriented, the magnetic properties of the magnetic ring are relatively low, and it is impossible to prepare a high-performance radially oriented magnetic ring with a large aspect ratio
There are also some technologies for splicing magnetic rings, such as ZL200820117964.4 and ZL201020001971.5. The common point of these technologies is that they all require fixing devices other than magnets. These fixing devices increase the volume of magnetic rings and also affect the utilization efficiency of magnetic properties. cost

Method used

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  • Radial magnet ring and production method thereof
  • Radial magnet ring and production method thereof
  • Radial magnet ring and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Permanent magnet powder composition ratio: Nd: 29wt%, Dy: 4wt%, B: 1wt%, Al: 1wt%, Cu: 0.1wt%, Co: 2wt%, Nb: 0.5wt%, Ga: 0.2wt%, The balance is Fe and unavoidable impurities.

[0034] According to the above composition ratio, the raw materials are melted together to make R 2 T 14 The alloy of compound B as the main phase is ground into permanent magnetic powder with an average particle size of 3-5 μm. The permanent magnet powder is oriented in the magnetic field and then pressed into shape, and then sintered to obtain a magnetic block. After processing the magnetic block (including processing the arrow structure and grinding to the set size), the arc-shaped magnetic tile can be obtained, and the surface of the arc-shaped magnetic tile can be further anti-corrosion Treatment, such as electroplating nickel, phosphating and other conventional means, the specification is R25 mm×R10 mm×15mm (wall thickness)×80 mm (height)×45°. like Figure 4 As shown, one end of the arc-...

Embodiment 2

[0038] Permanent magnet powder composition ratio: Nd: 31wt%, B: 0.9wt%, Cu: 0.05wt%, Co: 1.5wt%, Nb: 0.5wt%, Ti: 0.2%, Ga: 0.05wt%, the balance is Fe and unavoidable impurities. Other schemes of this embodiment are the same as in Embodiment 1.

Embodiment 3

[0040] Permanent magnet powder composition ratio: Nd: 29wt%, Y: 4wt%, B: 1wt%, Al: 1wt%, Cu: 0.1wt%, Co: 2wt%, Nb: 0.5wt%, Ga: 0.2wt%, The balance is Fe and unavoidable impurities.

[0041] According to the above composition ratio, the raw materials are melted together to make R 2 T 14 The alloy of compound B as the main phase is ground into permanent magnetic powder with an average particle size of 3-5 μm. The permanent magnet powder is oriented in a magnetic field and then pressed into shape, and then sintered to obtain a magnetic block. After processing the magnetic block (including processing the dovetail groove structure and grinding to the set size), the arc-shaped magnetic tile can be obtained, and the surface of the arc-shaped magnetic tile can also be further modified. Anti-corrosion treatment, such as electroplating nickel, phosphating and other conventional methods, the specification is R20mm×R15 mm×5mm (wall thickness)×50 mm (height)×30°. like figure 2 As show...

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Abstract

The invention discloses a radial magnet ring and a production method thereof. The purpose of the invention is to solve the problem that the yield of directly produced one-piece magnet rings is low and that the magnetic properties of high-height-to-diameter ratio magnet rings are low. A plurality of arc-shaped magnetic tiles are assembled and bonded to form the radial magnet ring, and a positioning structure is arranged between every two neighboring arc-shaped magnetic tiles. The structure of the radial magnet ring is simple, fixtures are not needed besides the magnet ring, and the magnet ring has high strength and good magnetic properties.

Description

technical field [0001] The invention relates to the technical field of magnetic ring production, in particular to a radial magnetic ring and a preparation method thereof. Background technique [0002] With the promotion of automation technology, the demand for permanent magnet motors is increasing. Generally speaking, permanent magnet motors need a radial annular magnetic field. At present, there are many technologies for directly producing radial magnetic rings, such as ZL200710106670.1, ZL01111509.2, and ZL00125615.7. These technologies can directly prepare integrated radial magnetic rings, but using these technologies to prepare large aspect ratios (h / Ф ≥1) When the magnetic ring is radially oriented, the magnetic properties of the magnetic ring are relatively low, and it is impossible to prepare a high-performance radially oriented magnetic ring with a large aspect ratio. There are also some technologies for splicing magnetic rings, such as ZL200820117964.4 and ZL201020...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/24H01F27/26H01F41/02
Inventor 郝忠彬吴美浩洪群峰黎龙贵
Owner 浙江东阳东磁有限公司
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