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A kind of preparation method of Japanese-shaped soft magnetic ferrite core

A soft ferrite, in-line technology, used in the manufacture of inductors/transformers/magnets, electrical components, circuits, etc., can solve problems such as easy deformation, and achieve the effects of preventing deformation, saving costs, and simple operation.

Inactive Publication Date: 2016-08-17
上海华源磁业股份有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing a Japanese-shaped soft ferrite core, which is used to solve the problem that the Japanese-shaped soft ferrite core is easily deformed in the sintering process in the prior art

Method used

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  • A kind of preparation method of Japanese-shaped soft magnetic ferrite core
  • A kind of preparation method of Japanese-shaped soft magnetic ferrite core
  • A kind of preparation method of Japanese-shaped soft magnetic ferrite core

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Place a layer of Tian-shaped soft ferrite core blanks on the bottom of the firing plate, and stack 10, 12, 15, and 18 pieces on each Tian-shaped soft ferrite core blank , 20 pieces of Japanese-shaped soft ferrite core blanks, each pile is close together, until the setter is full.

[0041] Then, sprinkle zirconium powder on the surface of the Japanese-shaped soft ferrite core blank and the Tian-shaped soft ferrite core blank on the setter. Put the setter plate into the nitrogen pit for high-temperature sintering, the sintering temperature is 1380°C, and the holding time is 5 hours.

[0042] After sintering, cool down, take out the blank, and then grind the Japanese-shaped soft ferrite core blank to obtain a Japanese-shaped soft ferrite core after finishing. The specific data are shown in Table 1. It can be seen from Table 1 that when the Japanese-shaped soft ferrite core blanks are stacked as 10 to 15 pieces, the product qualification rate of the final Japanese-shaped s...

Embodiment 2

[0046] Place a layer of Tian-shaped soft ferrite core blanks on the bottom of the firing plate, and stack 15 Japanese-shaped soft ferrite core blanks on each Tian-shaped soft ferrite core blank Pieces, each pile is close together, until the setter is full.

[0047]Then, sprinkle zirconium powder on the surface of the Japanese-shaped soft ferrite core blank and the Tian-shaped soft ferrite core blank on the setter. Put the setter plate into the nitrogen pit for high-temperature sintering, the sintering temperature is 1330°C, 1350°C, 1380°C, and the holding time is 4 hours.

[0048] After sintering, cool down, take out the blank, and then grind the Japanese-shaped soft ferrite core blank to obtain a Japanese-shaped soft ferrite core after finishing. The specific data are shown in Table 1. It can be seen from Table 1 that when the sintering temperature is 1350°C, the product qualification rate of the Japanese-shaped soft ferrite core is the highest, reaching 93.8%.

[0049] Tab...

Embodiment 3

[0052] Place a layer of Tian-shaped soft ferrite core blanks on the bottom of the firing plate, and stack 15 Japanese-shaped soft ferrite core blanks on each Tian-shaped soft ferrite core blank Pieces, each pile is close together, until the setter is full.

[0053] Then, sprinkle zirconium powder on the surface of the Japanese-shaped soft ferrite core blank and the Tian-shaped soft ferrite core blank on the setter. Put the setter plate into the nitrogen pit for high-temperature sintering, the sintering temperature is 1350°C, and the holding time is 4 hours, 5 hours, and 6 hours respectively.

[0054] After sintering, cool down, take out the blank, and then grind the Japanese-shaped soft ferrite core blank to obtain a Japanese-shaped soft ferrite core after finishing. The specific data are shown in Table 1. It can be seen from Table 1 that when the holding time is 5 hours and 6 hours, the product qualification rate of the Japanese-shaped soft ferrite core is not much different...

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Abstract

The invention provides a manufacturing method for a soft magnetic ferrite core shaped like a Chinese character 'ri'. A soft magnetic ferrite core blank shaped like a Chinese character 'tian' is placed on a setting plate each time sintering is carried out, and more than one soft magnetic ferrite core blank shaped like the Chinese character 'ri' is stacked on the soft magnetic ferrite core blank shaped like the Chinese character 'tian'. Compared with the soft magnetic ferrite core blanks shaped like the Chinese character 'ri', the soft magnetic ferrite core blank shaped like the Chinese character 'tian' structurally comprises a frame and a center post and further comprises a center rib. The soft magnetic ferrite core blank shaped like the Chinese character 'tian' and the soft magnetic ferrite core blanks shaped like the Chinese character 'ri' are the same in shape and size of frames and center posts, need to be placed on bottoms in the sintering procedure for every time and cannot be repeatedly used. The method is easy to operate, convenient to machine and easy to produce on an industrial scale. In addition, production cost of enterprises can be saved, the failure rate of products is avoided, resources are saved, and the method is worthy of being popularized and applied.

Description

technical field [0001] The invention relates to the technical field of manufacturing soft ferrite cores, in particular to a method for preparing a Japanese-shaped soft ferrite core. Background technique [0002] As a high-frequency magnetically conductive material, soft ferrite core is an important part of electronic transformers and an important basic functional material in the electronics industry, home appliance industry and other fields. With the acceleration of the upgrading of electronic products at home and abroad, the research on soft ferrite cores has attracted more and more attention from all over the world, and the production output has continued to increase. [0003] At present, with the continuous improvement of the work requirements for electronic transformers, the difficulty of designing, manufacturing and processing soft ferrite cores is also increasing. The production of enterprises puts forward higher requirements. However, as the processing difficulty of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/02C04B35/64
Inventor 薛志萍
Owner 上海华源磁业股份有限公司