A kind of preparation method of modified magnetic powder core

A magnetic powder core and modified technology, applied in the manufacture of inductors/transformers/magnets, magnetic materials, magnetic objects, etc., to achieve the effect of reducing noise, easy operation and simple method

Active Publication Date: 2017-03-15
QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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Problems solved by technology

[0014] In order to solve the above problems, the object of the present invention is to provide a method for preparing a modified magnetic powder core, which improves the noise defect of the magnetic powder core by using a non-magnetic conductive substance, while keeping the loss of the magnetic powder core unaffected

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  • A kind of preparation method of modified magnetic powder core

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preparation example Construction

[0025] The preparation method of the modified magnetic powder core of the example provided in this embodiment includes the following steps,

[0026] Step 1, embrittlement treatment: heat-treat the FeSiB amorphous metal strip to make it embrittled and easily crushed;

[0027] Step 2, crushing: crushing the brittle amorphous metal strip to obtain amorphous metal powder;

[0028] Step 3, sieving and proportioning: sieving the amorphous metal powder, and then mixing it into powder particles of a certain composition;

[0029] Step 4, passivation treatment and insulation coating: Pour the proportioned amorphous powder particles into the mixer, stir and mix evenly, add passivation passivation agent, mix evenly, stir at a constant speed until dry; then add starting Mix the low-melting-point glass powder and epoxy resin for insulation bonding, and stir at a constant speed until dry.

[0030] Step 5, adding a modifier: adding a modifier to the insulating coated amorphous powder partic...

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Abstract

The invention belongs to the field of metal soft magnetic material manufacturing, particularly relates to a modified magnetic powder core manufacturing method. The method includes the following steps of (1) embrittling treatment, (2) smashing, (3) screening and matching, (4) passivating treatment and insulation cladding, (5) modifying agent adding, (6) compression molding and (7) annealing treatment and spraying. By means of the manufacturing method, the noise defect of iron silicon boron soft magnetic powder cores can be overcome, and the loss rate can be kept.

Description

technical field [0001] The invention belongs to the field of metal soft magnetic material manufacturing, and in particular relates to a preparation method of a modified iron-silicon-boron soft magnetic powder core. Background technique [0002] Since Professor Duwez in the United States invented the rapid quenching process to prepare amorphous alloys in 1960, due to its unique structure, efficient preparation process, excellent material properties and broad application prospects, it has been favored by material scientists and the industry. of special attention. Amorphous magnetic powder core is a new type of composite electronic material, mainly used in switching power supply cores, common-mode inductors, high-frequency inverters and zero-sequence transformers. [0003] At present, the magnetic powder core products mainly include iron silicon boron magnetic powder cores, sendust magnetic powder cores, iron nickel magnetic powder cores, and MPP magnetic powder cores. In com...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02H01F1/147H01F1/22B22F3/02
Inventor 江志滨纪杰王亚娜李维强安文文张耿杰
Owner QINGDAO YUNLU ADVANCED MATERIALS TECH CO LTD
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