CN104051108A - Nickel-oxide-based ferrite core material used for transformer - Google Patents
Nickel-oxide-based ferrite core material used for transformer Download PDFInfo
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- CN104051108A CN104051108A CN201410283350.3A CN201410283350A CN104051108A CN 104051108 A CN104051108 A CN 104051108A CN 201410283350 A CN201410283350 A CN 201410283350A CN 104051108 A CN104051108 A CN 104051108A
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Abstract
The invention discloses a nickel-oxide-based ferrite core material used for a transformer. The nickel-oxide-based ferrite core material comprises main materials and additives. The main materials comprise, by molar ratio, 60.2 mol to 66 mol of Fe2O3, 13.0 mol to 18 mol of manganese oxide, 11.3 mol to 16 mol of zinc oxide, 3 mol to 4 mol of magnesium oxide, 0.1 mol to 0.2 mol of sodium metasilicate, 0.6 mol to 1 mol of cobaltosic oxide and 0.01 mol to 0.02 mol of rare-earth composite magnetic powder. The additives comprise, by weight ratio of components to the ferrite core material, 70 ppm to 100 ppm of lithium nitride and 60 ppm to 80 ppm of ferrous sulfate. The rare-earth composite magnetic powder added into the nickel-oxide-based ferrite core material is high in magnetic energy product, stable in magnetism and simple in preparing method, and the finished product has the advantages of being high in crystal boundary resistivity, low in gas hole ratio and large and even in crystal particle.
Description
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Technical field
The present invention relates generally to oxidate magnetic material and manufactures field, relates in particular to a kind of nickel oxide-base ferrite magnetic core material for transformer.
Background technology
Along with the communication technology and the digitized development of electronic product; soft magnetic ferrite and element have been proposed to new requirement; high-performance high magnetic permeability magnetic core is widely used in each type telecommunications and information stock, as the fields such as common-mode filter, pulsactor, current transformer, earth leakage protective device, insulating transformer, signal and pulse transformer are widely applied.Telecommunications industry needs FERRITE CORE to have low core loss and high magnetic permeability now, and to meet microminiaturization and the high efficiency requirement of present electric equipment, existing magnetic core is difficult to meet above-mentioned requirements;
Its magnetic energy product of the permanent magnetic material that rare earth makes can reach 150 times of carbon steel, 3～5 times of Al-Ni-Co permanent magnet material, 8～10 times of permanent-magnet ferrite, and temperature coefficient is low, magnetic stability, coercive force is up to 800 kilo-ampere/rice.Be mainly used in the magnetic system of low speed torque motor, actuating motor, transducer, magnetic bearing etc.Nd-Fe-Bo permanent magnet material is third generation rare earth permanent-magnetic material, and its remanent magnetism, coercive force and maximum magnetic energy product are higher than the former, non-friable, has good mechanical performance, and alloy density is low, is conducive to lightness, slimming, the small-sized and subminaturization of magnetic element.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, and a kind of nickel oxide-base ferrite magnetic core material for transformer is provided.
The present invention is achieved by the following technical solutions:
A kind of nickel oxide-base ferrite magnetic core material for transformer, it comprises major ingredient and additive, and described major ingredient comprises according to mol ratio: the sodium metasilicate of the zinc oxide of the Fe2O3 of 60.2-66 mol, the manganese oxide of 13.0-18 mol, 11.3-16 mol, the magnesium oxide of 3-4mol, 0.1-0.2mol, the cobaltosic oxide of 0.6-1 mol, the rare earth compounded magnetic conductive powder of 0.01-0.02 mol; Additive comprises according to the weight ratio meter that accounts for described ferrite magnetic core material: the lithium nitride of 70-100ppm, the ferrous sulfate of 60-80ppm;
The preparation of described rare earth compounded magnetic conductive powder comprises the following steps:
The preparation of premixed liquid:
Described premixed liquid is made up of the raw material of following weight parts:
Nickel oxide 83-100, hexadecyltrimethylammonium chloride 1-2, diethylenetriamines 0.4-1, silester 1-2, deionized water 300-400;
Diethylenetriamines is mixed with silester, be uniformly mixed 3-6 minute at 40-45 DEG C, add nickel oxide, be stirred to normal temperature;
Hexadecyltrimethylammonium chloride is joined in deionized water, stir, add above-mentioned each raw material after treatment, 600-800 rev/min of dispersed with stirring 17-20 minute, obtains premixed liquid;
The trimethylolpropane that is 1-2:5-7:100 by mass ratio, stearic acid, neodymia mix, at 58-65 DEG C, be uniformly mixed 30-40 minute, adding concentration is the acetic acid of 10-20%, 70-100 rev/min of dispersed with stirring 4-6 minute, add ammonium fluoride, be uniformly mixed 20-30 minute, add premixed liquid, 400-500 rev/min of dispersed with stirring 1-2 hour, dry 20-30 minute at 80-100 DEG C, send into sintering furnace, sintering 4-6 hour at 300-350 DEG C, obtains described rare earth compounded magnetic conductive powder;
The mol ratio of described neodymia, acetic acid, ammonium fluoride is 2-3:6-7:1-2;
Described nickel oxide and the mass ratio of neodymia are 60-80:1.
For a preparation method for the nickel oxide-base ferrite magnetic core material of transformer, comprise the following steps:
(1) the each raw material except rare earth compounded magnetic conductive powder in above-mentioned major ingredient is sent into blending tank, 2500-3000 rev/min is stirred mixed 2-3 hour, send into rotary furnace pre-burning, pre-burning 2-3 hour at 350-400 DEG C, send into grinding pot, add rare earth compounded magnetic conductive powder, being ground to fineness is 60-80 μ m;
(2) additive is sent into grinding pot, add the 3 diethyl aminopropylamine of weight of additive 0.7-1%, being ground to fineness is 50-70 μ m;
(3) above-mentioned each raw material after treatment is mixed, add the water of compound weight 20-30%, the pentaerythrite of 1-2%, at 60-70 DEG C, be uniformly mixed 20-30 minute;
(4) spraying is dry, is pressed into base, and sintering obtains the described nickel oxide-base ferrite magnetic core material for transformer.
Advantage of the present invention is:
The rare earth compounded magnetic conductive powder magnetic energy product that ferrite magnetic core material of the present invention adds is high, magnetic stability, and preparation method is simple, and it is high that finished product has grain boundary resistance rate, and the porosity is low, mechanical performance is strong, and crystal grain is feature greatly and uniformly.
Embodiment
Embodiment 1
A kind of nickel oxide-base ferrite magnetic core material for transformer, it is characterized in that it comprises major ingredient and additive, described major ingredient comprises according to mol ratio: the sodium metasilicate of the zinc oxide of the Fe2O3 of 60.2-mol, the manganese oxide of 18 mol, 11.3mol, the magnesium oxide of 3mol, 0.2mol, the cobaltosic oxide of 0.6mol, the rare earth compounded magnetic conductive powder of 0.02 mol; Additive comprises according to the weight ratio meter that accounts for described ferrite magnetic core material: the lithium nitride of 100ppm, the ferrous sulfate of 80ppm;
The preparation of described rare earth compounded magnetic conductive powder comprises the following steps:
The preparation of premixed liquid:
Described premixed liquid is made up of the raw material of following weight parts:
Nickel oxide 100, hexadecyltrimethylammonium chloride 1, diethylenetriamines 0.4, silester 1-2, deionized water 400;
Diethylenetriamines is mixed with silester, be uniformly mixed 6 minutes at 45 DEG C, add nickel oxide, be stirred to normal temperature;
Hexadecyltrimethylammonium chloride is joined in deionized water, stir, add above-mentioned each raw material after treatment, 800 revs/min of dispersed with stirring 17 minutes, obtain premixed liquid;
The trimethylolpropane that is 1:7:100 by mass ratio, stearic acid, neodymia mix, at 65 DEG C, be uniformly mixed 40 minutes, adding concentration is the acetic acid of 10-20%, 100 revs/min of dispersed with stirring 6 minutes, add ammonium fluoride, be uniformly mixed 30 minutes, add premixed liquid, 500 revs/min of dispersed with stirring 2 hours, dry 20-30 minute at 80-100 DEG C, send into sintering furnace, sintering 4 hours, obtains described rare earth compounded magnetic conductive powder at 350 DEG C;
The mol ratio of described neodymia, acetic acid, ammonium fluoride is 3:7:2;
Described nickel oxide and the mass ratio of neodymia are 60:1.
For a preparation method for the nickel oxide-base ferrite magnetic core material of transformer, comprise the following steps:
(1) the each raw material except rare earth compounded magnetic conductive powder in above-mentioned major ingredient is sent into blending tank, 2500-3000 rev/min is stirred mixed 2-3 hour, sends into rotary furnace pre-burning, pre-burning 3 hours at 400 DEG C, send into grinding pot, add rare earth compounded magnetic conductive powder, being ground to fineness is 80 μ m;
(2) additive is sent into grinding pot, add the 3 diethyl aminopropylamine of weight of additive 0.7%, being ground to fineness is 70 μ m;
(3) above-mentioned each raw material after treatment is mixed, add the water of compound weight 30%, 2% pentaerythrite, at 60 DEG C, be uniformly mixed 30 minutes;
(4) spraying is dry, is pressed into base, and sintering obtains the described nickel oxide-base ferrite magnetic core material for transformer.
Through detection, the basic mechanical design feature index that the product of above-described embodiment 1 gained reaches:
The initial permeability of magnetic core of the present invention is greater than 2700 μ i;
Maximum magnetic flux core loss (100Kc, 200mT) unit: KW/m
3: 399 (100 ± 2 DEG C);
Curie temperature is higher than 240 DEG C.
Claims (2)
1. the nickel oxide-base ferrite magnetic core material for transformer, it is characterized in that it comprises major ingredient and additive, described major ingredient comprises according to mol ratio: the sodium metasilicate of the zinc oxide of the Fe2O3 of 60.2-66 mol, the manganese oxide of 13.0-18 mol, 11.3-16 mol, the magnesium oxide of 3-4mol, 0.1-0.2mol, the cobaltosic oxide of 0.6-1 mol, the rare earth compounded magnetic conductive powder of 0.01-0.02 mol; Additive comprises according to the weight ratio meter that accounts for described ferrite magnetic core material: the lithium nitride of 70-100ppm, the ferrous sulfate of 60-80ppm;
The preparation of described rare earth compounded magnetic conductive powder comprises the following steps:
The preparation of premixed liquid:
Described premixed liquid is made up of the raw material of following weight parts:
Nickel oxide 83-100, hexadecyltrimethylammonium chloride 1-2, diethylenetriamines 0.4-1, silester 1-2, deionized water 300-400;
Diethylenetriamines is mixed with silester, be uniformly mixed 3-6 minute at 40-45 DEG C, add nickel oxide, be stirred to normal temperature;
Hexadecyltrimethylammonium chloride is joined in deionized water, stir, add above-mentioned each raw material after treatment, 600-800 rev/min of dispersed with stirring 17-20 minute, obtains premixed liquid;
The trimethylolpropane that is 1-2:5-7:100 by mass ratio, stearic acid, neodymia mix, at 58-65 DEG C, be uniformly mixed 30-40 minute, adding concentration is the acetic acid of 10-20%, 70-100 rev/min of dispersed with stirring 4-6 minute, add ammonium fluoride, be uniformly mixed 20-30 minute, add premixed liquid, 400-500 rev/min of dispersed with stirring 1-2 hour, dry 20-30 minute at 80-100 DEG C, send into sintering furnace, sintering 4-6 hour at 300-350 DEG C, obtains described rare earth compounded magnetic conductive powder;
The mol ratio of described neodymia, acetic acid, ammonium fluoride is 2-3:6-7:1-2;
Described nickel oxide and the mass ratio of neodymia are 60-80:1.
2. a preparation method for the nickel oxide-base ferrite magnetic core material for transformer as claimed in claim 1, is characterized in that comprising the following steps:
(1) the each raw material except rare earth compounded magnetic conductive powder in above-mentioned major ingredient is sent into blending tank, 2500-3000 rev/min is stirred mixed 2-3 hour, send into rotary furnace pre-burning, pre-burning 2-3 hour at 350-400 DEG C, send into grinding pot, add rare earth compounded magnetic conductive powder, being ground to fineness is 60-80 μ m;
(2) additive is sent into grinding pot, add the 3 diethyl aminopropylamine of weight of additive 0.7-1%, being ground to fineness is 50-70 μ m;
(3) above-mentioned each raw material after treatment is mixed, add the water of compound weight 20-30%, the pentaerythrite of 1-2%, at 60-70 DEG C, be uniformly mixed 20-30 minute;
(4) spraying is dry, is pressed into base, and sintering obtains the described nickel oxide-base ferrite magnetic core material for transformer.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104387047A (en) * | 2014-10-16 | 2015-03-04 | 安徽德信电气有限公司 | Clay-based ferrite magnetic core material for transformers |
| CN104387048A (en) * | 2014-10-16 | 2015-03-04 | 安徽德信电气有限公司 | Tin-based ferrite magnetic core material for transformers |
| CN104402421A (en) * | 2014-10-16 | 2015-03-11 | 安徽德信电气有限公司 | Maifanite base ferrite magnetic core material for transformer |
| CN108447640A (en) * | 2018-02-05 | 2018-08-24 | 合肥欧仕嘉机电设备有限公司 | A kind of magnetic material of for transformer and preparation method thereof |
| US11996222B2 (en) | 2016-09-07 | 2024-05-28 | South Dakota Board Of Regents | Thermally stabilized redox materials and applications thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPS4865499A (en) * | 1971-12-17 | 1973-09-08 | ||
| CN103482986A (en) * | 2013-09-13 | 2014-01-01 | 苏州天源磁业有限公司 | Low-loss MnZn ferrite material sintering method |
| CN103693951A (en) * | 2013-09-02 | 2014-04-02 | 横店集团东磁股份有限公司 | Anti-electromagnetic interference manganese zinc ferrite material and preparation method thereof |
-
2014
- 2014-06-24 CN CN201410283350.3A patent/CN104051108B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4865499A (en) * | 1971-12-17 | 1973-09-08 | ||
| CN103693951A (en) * | 2013-09-02 | 2014-04-02 | 横店集团东磁股份有限公司 | Anti-electromagnetic interference manganese zinc ferrite material and preparation method thereof |
| CN103482986A (en) * | 2013-09-13 | 2014-01-01 | 苏州天源磁业有限公司 | Low-loss MnZn ferrite material sintering method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104387047A (en) * | 2014-10-16 | 2015-03-04 | 安徽德信电气有限公司 | Clay-based ferrite magnetic core material for transformers |
| CN104387048A (en) * | 2014-10-16 | 2015-03-04 | 安徽德信电气有限公司 | Tin-based ferrite magnetic core material for transformers |
| CN104402421A (en) * | 2014-10-16 | 2015-03-11 | 安徽德信电气有限公司 | Maifanite base ferrite magnetic core material for transformer |
| US11996222B2 (en) | 2016-09-07 | 2024-05-28 | South Dakota Board Of Regents | Thermally stabilized redox materials and applications thereof |
| CN108447640A (en) * | 2018-02-05 | 2018-08-24 | 合肥欧仕嘉机电设备有限公司 | A kind of magnetic material of for transformer and preparation method thereof |
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| CN104051108B (en) | 2016-08-24 |
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Address after: 244000 Private Industrial Park, Tongling Bridge Economic Development Zone, Anhui, Tongling Patentee after: Tongling Sanjia transformer Polytron Technologies Inc Address before: 244000 Anhui province Tongling suburb Bridge Economic Development Private Industrial Park Patentee before: Tongling Sanjia Transformer Co., Ltd. |
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Effective date of registration: 20180320 Address after: No. 1, No. 1, No. 120, Taishan Avenue, Tongling economic and Technological Development Zone, Anhui Province Patentee after: TONGLING RUIBO ELECTRONIC TECHNOLOGY CO., LTD. Address before: 244000 Private Industrial Park, Tongling Bridge Economic Development Zone, Anhui, Tongling Patentee before: Tongling Sanjia transformer Polytron Technologies Inc |
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