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Orientation device for magnetic metal powder

A magnetic metal powder and orientation device technology, which is applied in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve problems such as the inability to meet the requirements for the use of anti-EMI magnetic sheets, and achieve high orientation rate, stable quality, and fast processing Effect

Active Publication Date: 2015-12-23
江苏宝纳电磁新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional heteropolar magnetic circuit can only make the long axis of the flake metal soft magnetic powder align along the direction of the magnetic field, while the short axis can stay in any direction perpendicular to the magnetic field, which cannot meet the requirements of the anti-EMI magnetic sheet. requirements for use

Method used

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  • Orientation device for magnetic metal powder
  • Orientation device for magnetic metal powder
  • Orientation device for magnetic metal powder

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0014] Such as figure 1 As shown, a magnetic metal powder orientation device includes an adjusting screw 3, and the adjusting screw 3 is provided with two semi-open magnetic circuits parallel to the upper and lower sides, and the magnetic circuit is composed of a permanent magnet 2 and a yoke 1. The permanent magnet 2 is semi-open and fixedly arranged in the corresponding yoke 1, that is, the permanent magnet 2 is surrounded by three sides and fixed in the yoke 1, so that the opposite surfaces of the upper and lower permanent magnets 2 are directly opposite to each other. , the yoke is vertically arranged with the adjusting screw, one end of the yoke 1 is connected with the adjusting screw 3, one end of the yoke 2 is connected with the adjusting s...

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Abstract

The invention discloses a device for orienting magnetic metal powder, which comprises an adjusting screw. Two semi-open magnetic circuits are arranged parallelly on the upper and lower sides of the adjusting screw. The magnetic circuit is composed of a permanent magnet and a yoke. The magnets are semi-open and fixedly arranged in the corresponding yoke, so that the upper and lower permanent magnets face to face in parallel, the yoke is perpendicular to the adjusting screw, and one end of the yoke is connected to the adjusting screw. Connected, the distance between adjacent permanent magnets is adjusted by adjusting the screw to change the directional magnetic field strength. The surfaces of the upper and lower permanent magnets are parallel to each other to form a magnetic circuit structure with opposite poles. When the soft magnetic metal powder is oriented, the powder orientation rate is high, the quality of the anti-EMI flexible magnetic sheet produced is stable, and the processing is faster and more efficient.

Description

technical field [0001] The invention relates to a device for aligning flake-like magnetic metal micropowders. Background technique [0002] Radio frequency identification technology (RFID), as the core link to realize the basis of item identification in the Internet of Things, must use flexible magnetic sheets. It is made of very thin flaky metal powder below 1μm, which can absorb high-frequency electromagnetic interference waves, and can effectively prevent the reflection of metal objects from interfering with the reader's identification of RFID tags. In the communication frequency band of the Internet of Things, it can increase the effective height of the antenna and increase the communication distance. [0003] Traditional anti-EMI materials are made of spherical, ellipsoidal, massive and irregular metal magnetic powders. There are a large number of gaps in the flexible anti-EMI magnetic sheet made of magnetic particles with these shapes, which is easy to cause partial ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/00H01F41/02
Inventor 阳开新戴少银瞿卫俊
Owner 江苏宝纳电磁新材料有限公司
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