Material for high superposition of manganese-zinc ferrite core and preparation method thereof

A technology of manganese-zinc ferrite and high superposition is applied in the field of materials for high-superposition manganese-zinc ferrite cores and their preparation, and can solve the problem of low magnetic permeability at room temperature, which cannot meet the requirements of superimposed inductance of power transformers, and cannot meet the requirements of superimposed inductance of power transformers. requirements and other issues, to achieve the effect of optimizing the preparation process, reducing industrial processing costs, large-scale production, and high stacking characteristics

Active Publication Date: 2015-03-25
南通三佳磁业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] For the high Bs90 material on the market, the room temperature magnetic permeability is low, and it cannot meet the requirements of the superimposed induc

Method used

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  • Material for high superposition of manganese-zinc ferrite core and preparation method thereof
  • Material for high superposition of manganese-zinc ferrite core and preparation method thereof
  • Material for high superposition of manganese-zinc ferrite core and preparation method thereof

Examples

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Example Embodiment

[0029] Example one

[0030] In order to improve the high superposition and high inductance of Mn-Zn ferrite cores, Fe must be increased 2 O 3 And ZnO composition content, due to Fe 2 O 3 The increase of the content will greatly increase the power loss. Based on the composition of the SJ1.8K Mn-Zn ferrite core, we have determined the main composition of a high-stacked Mn-Zn ferrite core material Composition: Fe 2 O 3 53.3mol%, MnO 38.2mol% and ZnO 8.5mol%; the Fe 2 O 3 The purity is above 99.5%, the specific surface area is 4.0m 2 / g above; the purity of the MnO is above 99.7%, and the specific surface area is 10-15m 2 / g.

[0031] Firstly, the weight of various raw materials is calculated by converting into weight percentage; then, the ingredients are weighed to obtain the powder; the powder is pressed into the pre-burning furnace by red vibration, and the pre-burned material is obtained. Among them, The pre-sintering temperature is 950℃; the pre-sintered material is vibrated and ...

Example Embodiment

[0035] Example two

[0036] In order to further increase the superimposed inductance of this manganese-zinc ferrite core, Co is added under the premise that the basic composition of the core remains unchanged. 2 O 3 And TiO 2 , The specific method is: a high-stacked manganese-zinc ferrite core material, including the following main components calculated in mole percentage:: Fe 2 O 3 53.3mol%, MnO 38.2mol% and ZnO 8.5mol%; the Fe 2 O 3 The purity is above 99.5%, the specific surface area is 4.0m 2 / g above; the purity of the MnO is above 99.7%, and the specific surface area is 10-15m 2 / g; It further includes the following additives calculated in mole percentage: Co 2 O 3 0.15mol% and TiO 2 0.1mol%.

[0037] Firstly, the weight of various raw materials is calculated by converting into weight percentage; then, the ingredients are weighed to obtain the powder; the powder is pressed into the pre-burning furnace by red vibration, and the pre-burned material is obtained. Among them, Th...

Example Embodiment

[0041] Example three

[0042] Because the Fe in this manganese-zinc ferrite core 2 O 3 Higher content, then add a certain amount of Co 2 O 3 , Resulting in an increase in the power consumption of the magnetic core. In order to change this situation, we have added beneficial impurities to the composition of the magnetic core, CaCO 3 , SiO 2 , Nb 2 O 5 , ZrO 2 , In order to suppress the excessive growth of crystal grains to increase the resistivity of the magnetic core and improve the power consumption, the specific method is: a high-superimposed manganese-zinc ferrite core material, including the following main components calculated in mole percentage: Fe 2 O 3 53.3mol%, MnO 38.2mol% and ZnO 8.5mol%; the Fe 2 O 3 The purity is above 99.5%, the specific surface area is 4.0m 2 / g above; the purity of the MnO is above 99.7%, and the specific surface area is 10-15m 2 / g; It further includes the following additives calculated in mole percentage: Co 2 O 3 0.15mol%, TiO 2 0.1mol%, CaCO 3...

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Abstract

The invention belongs to the field of soft magnetic ferrite, and particularly discloses a material for high superposition of a manganese-zinc ferrite core and a preparation method thereof. The material for the high superposition of the manganese-zinc ferrite core comprises the following main components in mol percentage: 53-54mol% of Fe2O3, 37.5-38.5mol% of MnO and 8-10mol% of ZnO. The invention further provides a preparation method of the material for the high superposition of the manganese-zinc ferrite core. By sintering through secondary reduction in a tunnel kiln, the density of the manganese-zinc ferrite core can be up to 4.9g/cm<3>. By adopting the material provided by the invention, the superposition and the inductance of the manganese-zinc ferrite core can be improved, the work efficiency of the can be improved, the production cost can be reduced, and the miniaturization and the high-efficiency operation of the transformer can be realized.

Description

technical field [0001] The invention relates to the field of soft magnetic ferrite materials, in particular to a material for a highly superimposed manganese-zinc ferrite core and a preparation method thereof. Background technique [0002] With the continuous development of electronic transformers, it is becoming more and more obvious that electronic transformers are required to be lightweight, efficient, and energy-saving. As a manufacturer of manganese-zinc ferrite cores, higher requirements are put forward. The original high BS and low power consumption SJ1.8K ( It is equivalent to TDKHV22), which can no longer meet the superposition requirements of power transformers. The superposition test data are shown in Table 1. [0003] Table I [0004] [0005] The room temperature magnetic permeability of high Bs90 materials on the market is relatively low, and it cannot meet the requirements for superimposed inductance of its power transformer. [0006] To sum up, the origi...

Claims

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Application Information

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IPC IPC(8): C04B35/38C04B35/622
Inventor 胡惠国
Owner 南通三佳磁业有限公司
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