CN105070479A - Magnetic core material for transformer high in magnetic permeability - Google Patents
Magnetic core material for transformer high in magnetic permeability Download PDFInfo
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- CN105070479A CN105070479A CN201510484760.9A CN201510484760A CN105070479A CN 105070479 A CN105070479 A CN 105070479A CN 201510484760 A CN201510484760 A CN 201510484760A CN 105070479 A CN105070479 A CN 105070479A
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Abstract
The invention discloses a magnetic core material for a transformer high in magnetic permeability. The magnetic core material is prepared from, by weight, 60-65 parts of hydroxyl iron powder, 10-15 parts of iron sesquioxide, 25-27 parts of manganese oxide, 21-23 parts of zinc oxide, 4-5 parts of silane coupling agent kh570, 5-7 parts of organic silicon resin, 1-2 parts of polyving akohol, 7-9 parts of sodium silicate, 0.2-0.4 part of tributyl borate, 0.3-0.4 part of nanometer iron phosphate, 1-2 parts of carbon fiber and a proper amount of water. The prepared magnetic core material is very high in magnetic permeability, small in eddy-current loss, suitable for the transformer, simple in technology, environmentally friendly, easy to operate, low in cost and suitable for industrialization large-scale and mass production.
Description
Technical field
The present invention relates to Ferrite Material technical field, particularly relate to a kind of high magnetic permeability magnetic core for transformer material.
Background technology
Soft magnetic material is the magnetic material that a class has compared with low-coercivity and higher magnetic permcability, under the effect of externally-applied magnetic field, soft magnetic material shows the feature being not only easy to magnetize but also be easy to demagnetize, soft magnetic material, as one of the critical function material of magnetoelectricity conversion art, has a wide range of applications in fields such as electronic equipment, communication and electrical equipment.Along with digital television, notebook computer universal, electronic equipment is to light, thin, miniaturization, and this necessity of making use of momentum reduces power volume, proposes higher, stricter requirement to power supply.Compound soft magnetic material is owing to having metal soft magnetic material high saturated magnetic induction and soft magnetic ferrite high resistivity, and the application in industrial technology and daily life is increasing, is subject to people's attention all the time and is studied widely.Compound soft magnetic material is generally with soft magnetic metal powder for raw material, after particle surface carries out organic or inorganic insulation processing, can obtain block soft magnetic material at employing powder metallurgical technique by compressing for composite powder.Compared with traditional metal soft magnetic material, compound soft magnetic material has higher resistivity, can reduce eddy current loss, improves the frequency of utilization of material.But general organic or inorganic coating layer has non magnetic feature, after metallic magnetic grain compound, also the saturation magnetization of material can be reduced to a certain extent, so must by suitable effective technique, at raising resistivity of material with while reducing magnetic loss, maintenance higher density and saturation magnetization are the emphasis of current research.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, provides a kind of high magnetic permeability magnetic core for transformer material.
The present invention is achieved by the following technical solutions:
A kind of high magnetic permeability magnetic core for transformer material, is made up of the raw material of following weight portion: carbonyl iron particles 60-65, di-iron trioxide 10-15, manganese oxide 25-27, zinc oxide 21-23, silane coupler kh5704-5, organic siliconresin 5-7, polyvinyl alcohol 1-2, sodium metasilicate 7-9, butyl borate 0.2-0.4, nano ferric phosphate 0.3-0.4, carbon fiber 1-2, water are appropriate;
Described a kind of high magnetic permeability magnetic core for transformer material, be made up of following concrete steps:
(1) by carbonyl iron particles, di-iron trioxide, manganese oxide, zinc oxide and silane coupler kh570 mixing and ball milling 0.5-1h, then by the acetone solution of organic siliconresin by 4-6 times amount, be added in organic silicon solution by above-mentioned coupling magnetic and stir 0.6-1h, then in 40-50 ° of C, dry 1-2h is for subsequent use after pulverizing;
(2) all the other remaining materials are mixed except polyvinyl alcohol and sodium metasilicate, grinding distribution evenly after under 120-200 ° of C vacuum annealing 20-40min, pulverize for subsequent use after annealing in process;
(3) be dissolved in water by polyvinyl alcohol and make the poly-vinyl alcohol solution of concentration at 8-10%, then be added in poly-vinyl alcohol solution by the material that step (2) obtains, ultrasonic disperse evenly becomes slip;
(4) product that step (1) obtains is added in step (3), the granulation of spray drying tower internal spraying is added to after mixing and stirring, inlet temperature is controlled at 300-340 ° of C, outlet temperature controls at 100-110 ° of C, then particle is crossed 60 mesh sieves, adopt full-automatic powder moulding machine cold moudling;
(5) blank made is impregnated in sodium silicate solution, vacuumizes, after keeping 3min, take out material, dry, then under nitrogen protection, under 1000-1200 ° of C, sinter 120-160min, after terminating, be cooled to room temperature.
Advantage of the present invention is: the present invention adopts iron powder to replace iron oxide to prepare core material and have lower coercive force and loss characteristic, with after other powder couplings and at Surface coating one deck organic siliconresin, increase density, decrease the volume of core material and there is higher resistivity, high saturated magnetic induction and magnetic permeability, the function of the frequency of utilization of eddy current loss and raising material can be reduced, invention increases the caking property strengthened between particle, reduce briquetting pressure, avoid the blank aliquation when suppressing, fried line, the quality problems such as cracking, flood after formation in sodium metasilicate, reduce the problem of compressing residual porosity and stress greatly, and improve fire-resistant and heat-resisting performance, the butyl borate added, nano ferric phosphate and carbon fiber are with the use of the acid and alkali-resistance that can greatly strengthen magnetic core, corrosion-resistant and toughness reinforcing effect, core material prepared by the present invention has very high magnetic permeability, eddy current loss is little, be applicable to transformer to use, and technique is simple, environmental protection, easy to operate, cost is low, be applicable to industrial mass, large-scale production.
Embodiment
A kind of high magnetic permeability magnetic core for transformer material, is made up of the raw material of following weight portion: carbonyl iron particles 60, di-iron trioxide 10, manganese oxide 25, zinc oxide 21, silane coupler kh5704, organic siliconresin 5, polyvinyl alcohol 1, sodium metasilicate 7, butyl borate 0.2, nano ferric phosphate 0.3, carbon fiber 1, water are appropriate;
Described a kind of high magnetic permeability magnetic core for transformer material, be made up of following concrete steps:
(1) by carbonyl iron particles, di-iron trioxide, manganese oxide, zinc oxide and silane coupler kh570 mixing and ball milling 0.5h, then by the acetone solution of organic siliconresin by 4 times amount, be added in organic silicon solution by above-mentioned coupling magnetic and stir 0.6h, then in 40 ° of C, dry 1h is for subsequent use after pulverizing;
(2) all the other remaining materials are mixed except polyvinyl alcohol and sodium metasilicate, grinding distribution evenly after under 120 ° of C vacuum annealing 20min, pulverize for subsequent use after annealing in process;
(3) be dissolved in water by polyvinyl alcohol and make concentration at the poly-vinyl alcohol solution of 8%, then be added in poly-vinyl alcohol solution by the material that step (2) obtains, ultrasonic disperse evenly becomes slip;
(4) product that step (1) obtains is added in step (3), be added to the granulation of spray drying tower internal spraying after mixing and stirring, inlet temperature controlled at 300 ° of C, outlet temperature controls at 100 ° of C, then particle is crossed 60 mesh sieves, adopt full-automatic powder moulding machine cold moudling;
(5) blank made is impregnated in sodium silicate solution, vacuumizes, after keeping 3min, take out material, dry, then under nitrogen protection, under 1000 ° of C, sinter 120min, after terminating, be cooled to room temperature.
According to soft magnetic ferrite prepared by specific embodiment, carry out performance test to it, result is as follows:
Saturation flux density (T): 0.83, magnetic loss (W/Kg): 60, coercive force (A/m): 14, Curie temperature (° C): 173, operating frequency (MHz): 0.13.
Claims (2)
1. a high magnetic permeability magnetic core for transformer material, it is characterized in that, be made up of the raw material of following weight portion: carbonyl iron particles 60-65, di-iron trioxide 10-15, manganese oxide 25-27, zinc oxide 21-23, silane coupler kh5704-5, organic siliconresin 5-7, polyvinyl alcohol 1-2, sodium metasilicate 7-9, butyl borate 0.2-0.4, nano ferric phosphate 0.3-0.4, carbon fiber 1-2, water are appropriate.
2. a kind of high magnetic permeability magnetic core for transformer material according to claim 1, is characterized in that, be made up of following concrete steps:
(1) by carbonyl iron particles, di-iron trioxide, manganese oxide, zinc oxide and silane coupler kh570 mixing and ball milling 0.5-1h, then by the acetone solution of organic siliconresin by 4-6 times amount, be added in organic silicon solution by above-mentioned coupling magnetic and stir 0.6-1h, then in 40-50 ° of C, dry 1-2h is for subsequent use after pulverizing;
(2) all the other remaining materials are mixed except polyvinyl alcohol and sodium metasilicate, grinding distribution evenly after under 120-200 ° of C vacuum annealing 20-40min, pulverize for subsequent use after annealing in process;
(3) be dissolved in water by polyvinyl alcohol and make the poly-vinyl alcohol solution of concentration at 8-10%, then be added in poly-vinyl alcohol solution by the material that step (2) obtains, ultrasonic disperse evenly becomes slip;
(4) product that step (1) obtains is added in step (3), the granulation of spray drying tower internal spraying is added to after mixing and stirring, inlet temperature is controlled at 300-340 ° of C, outlet temperature controls at 100-110 ° of C, then particle is crossed 60 mesh sieves, adopt full-automatic powder moulding machine cold moudling;
(5) blank made is impregnated in sodium silicate solution, vacuumizes, after keeping 3min, take out material, dry, then under nitrogen protection, under 1000-1200 ° of C, sinter 120-160min, after terminating, be cooled to room temperature.
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| CN201510484760.9A CN105070479A (en) | 2015-08-10 | 2015-08-10 | Magnetic core material for transformer high in magnetic permeability |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788796A (en) * | 2016-04-13 | 2016-07-20 | 天长市天豪制冷设备厂 | Magnetic core material with high magnetic conductivity |
| CN109534807A (en) * | 2018-12-06 | 2019-03-29 | 安徽精磁电子有限公司 | A kind of cracking resistance FERRITE CORE and preparation method thereof |
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| CN102136329A (en) * | 2011-04-01 | 2011-07-27 | 钢铁研究总院 | Iron-based composite soft magnetic material and preparation method thereof |
| CN102982950A (en) * | 2012-11-23 | 2013-03-20 | 天长市昭田磁电科技有限公司 | TiO2-containing ferromagnetic core manufacturing method |
| CN104091665A (en) * | 2014-06-26 | 2014-10-08 | 无锡新腾东方电缆附件有限公司 | High-plasticity polymer composite magnetic conductor material |
| CN104557002A (en) * | 2015-01-15 | 2015-04-29 | 安徽龙磁科技股份有限公司 | Ferrite core material with high magnetic energy product |
| CN104591724A (en) * | 2015-01-15 | 2015-05-06 | 安徽龙磁科技股份有限公司 | High-mechanical-strength ferrite core material |
| CN104591716A (en) * | 2015-01-15 | 2015-05-06 | 安徽龙磁科技股份有限公司 | Nano magnetic core material |
| CN104817318A (en) * | 2015-04-14 | 2015-08-05 | 安徽祈艾特电子科技有限公司 | High-frequency high-power soft-magnetic ferrite material and preparation method thereof |
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2015
- 2015-08-10 CN CN201510484760.9A patent/CN105070479A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102136329A (en) * | 2011-04-01 | 2011-07-27 | 钢铁研究总院 | Iron-based composite soft magnetic material and preparation method thereof |
| CN102982950A (en) * | 2012-11-23 | 2013-03-20 | 天长市昭田磁电科技有限公司 | TiO2-containing ferromagnetic core manufacturing method |
| CN104091665A (en) * | 2014-06-26 | 2014-10-08 | 无锡新腾东方电缆附件有限公司 | High-plasticity polymer composite magnetic conductor material |
| CN104557002A (en) * | 2015-01-15 | 2015-04-29 | 安徽龙磁科技股份有限公司 | Ferrite core material with high magnetic energy product |
| CN104591724A (en) * | 2015-01-15 | 2015-05-06 | 安徽龙磁科技股份有限公司 | High-mechanical-strength ferrite core material |
| CN104591716A (en) * | 2015-01-15 | 2015-05-06 | 安徽龙磁科技股份有限公司 | Nano magnetic core material |
| CN104817318A (en) * | 2015-04-14 | 2015-08-05 | 安徽祈艾特电子科技有限公司 | High-frequency high-power soft-magnetic ferrite material and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105788796A (en) * | 2016-04-13 | 2016-07-20 | 天长市天豪制冷设备厂 | Magnetic core material with high magnetic conductivity |
| CN109534807A (en) * | 2018-12-06 | 2019-03-29 | 安徽精磁电子有限公司 | A kind of cracking resistance FERRITE CORE and preparation method thereof |
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Application publication date: 20151118 |