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A magnetic core structure prepared by additive manufacturing technology and its application

A technology of additive manufacturing and technology, applied in the field of magnetic core structure, can solve the problems of complex process route and low assembly efficiency, and achieve the effect of simple process route, increased surface area, and improved effect

Active Publication Date: 2017-09-12
FOSHAN CHENG XIAN TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the existing magnetic sensors and controllers, it is generally necessary to pair soft and hard magnets to realize the sensing and control of demagnetization near the Curie temperature of the soft magnets. However, the soft and hard magnets adopt separate formulas and molding processes, and need to be assembled and paired again for bonding , the process route is complex and the assembly efficiency is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A magnetic core structure prepared by additive manufacturing technology, including a cladding, the cladding is a hollow structure cladding, and the bottom of the hollow structure cladding is provided with a concave annular stacked layer to form a whole that communicates with the outside world , the outer side of the whole is stacked with hard magnetic materials through additive manufacturing technology to form an intermediate layer, and the outer side of the middle layer is stacked with coated MnZn ferrite soft magnetic materials through additive manufacturing technology to form an outer layer.

[0023] Further, the additive manufacturing technology is a selective laser ablation technology.

[0024] Further, a magnetic sensitive element can be placed in the hollow structure covering, and the magnetic sensitive element can be any one of a reed switch, a magnetic resistance, and a Hall element

[0025] Further, an action mechanism that directly realizes electrical connect...

Embodiment 2

[0033] A magnetic core structure prepared by additive manufacturing technology, including a cladding, the cladding is a hollow structure cladding, and the bottom of the hollow structure cladding is provided with a concave annular stacked layer to form a whole that communicates with the outside world , the outer side of the whole is stacked with hard magnetic materials through additive manufacturing technology to form an intermediate layer, and the outer side of the middle layer is stacked with coated MnZn ferrite soft magnetic materials through additive manufacturing technology to form an outer layer.

[0034] Further, a magnetic sensitive element can be placed in the hollow structure covering, and the magnetic sensitive element can be any one of a reed switch, a magnetoresistance, and a Hall magnetoresistance

[0035] Further, an action mechanism that directly realizes electrical connection or realizes on-off signal output may also be placed inside the hollow structure coverin...

Embodiment 3

[0043] A magnetic core structure prepared by additive manufacturing technology, including a cladding, the cladding is a hollow structure cladding, and the bottom of the hollow structure cladding is provided with a concave annular stacked layer to form a whole that communicates with the outside world , the outer side of the whole is stacked with hard magnetic materials through additive manufacturing technology to form an intermediate layer, and the outer side of the middle layer is stacked with coated MnZn ferrite soft magnetic materials through additive manufacturing technology to form an outer layer.

[0044] Further, a magnetic sensitive element can be placed in the hollow structure covering, and the magnetic sensitive element can be any one of a reed switch, a magnetoresistance, and a Hall magnetoresistance

[0045] Further, an action mechanism that directly realizes electrical connection or realizes on-off signal output may also be placed inside the hollow structure coverin...

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PUM

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Abstract

The invention belongs to the technical field of a magnetic core, and particularly discloses a magnetic core structure fabricated by employing a material additive manufacturing technology. The magnetic core structure comprises a coating substance and is characterized in that the coating substance is a hollow structured coating substance, wherein a concave annular lamination layer is arranged at the bottom of the hollow structured coating substance and form a whole communicating with the outside, a hard magnetic material is laminated on the outer side of the whole by the material additive manufacturing technology to form an intermediate layer, and a MnZn ferrite coated soft magnetic material is laminated on the outer side of the intermediate layer by the material additive manufacturing technology to form an outer layer. With the adoption of the material additive manufacturing technology, the magnetic core is formed by sequentially laminating heterogeneous magnetic materials, a lamination structure composed of three-layers of heterogeneous magnetic material is simple in process circuit, soft and hard magnetic bonding in pair is not needed, the high stability and low loss of the magnetic core and magnetic signal control are ensured, the formation process is greatly simplified, and the assembly efficiency is improved; and meanwhile, with the arrangement of the hollow structure, a magnetic sensitive element can be arranged, and the application of the magnetic core in the field of a sensor and a controller is expanded.

Description

technical field [0001] The invention belongs to the technical field of magnetic cores, and in particular relates to a magnetic core structure prepared by additive manufacturing technology. Background technique [0002] The magnetic core refers to a sintered magnetic metal oxide composed of various iron oxide mixtures. For example, manganese zinc ferrite and nickel zinc ferrite are typical core body materials. Ferrite cores are used in various fields requiring magnetic field sensing, sensing and control. [0003] In the existing magnetic sensors and controllers, it is generally necessary to pair soft and hard magnets to realize the sensing and control of demagnetization near the Curie temperature of the soft magnets. However, the soft and hard magnets adopt separate formulas and molding processes, and need to be assembled and paired again for bonding , the process route is complex and the assembly efficiency is low. [0004] Therefore, prior art still needs to be improved....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F3/10H01F1/34H01F41/02
CPCH01F1/344H01F3/10H01F41/02H01F2003/106
Inventor 龙克文颜天宝
Owner FOSHAN CHENG XIAN TECH CO LTD