CN104051108B - A kind of nickel oxide-base ferrite core material for transformer - Google Patents
A kind of nickel oxide-base ferrite core material for transformer Download PDFInfo
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- CN104051108B CN104051108B CN201410283350.3A CN201410283350A CN104051108B CN 104051108 B CN104051108 B CN 104051108B CN 201410283350 A CN201410283350 A CN 201410283350A CN 104051108 B CN104051108 B CN 104051108B
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Abstract
The invention discloses a kind of nickel oxide-base ferrite core material for transformer, it includes that major ingredient and additive, described major ingredient include according to mol ratio: the Fe2O3 of 60.2 66 mol, the manganese oxide of 13.0 18 mol, the zinc oxide of 11.3 16 mol, the magnesia of 3 4mol, the sodium metasilicate of 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 includes according to the mass ratio range accounting for described ferrite core material: the lithium nitride of 70 100ppm, the ferrous sulfate of 60 80ppm, the rare earth compounded magnetic conductive powder magnetic energy product that the ferrite core material of the present invention adds is high, magnetic stability, preparation method is simple, it is high that finished product has grain boundary resistance rate, and the porosity is low, crystal grain is big and uniform feature.
Description
Technical field
The invention mainly relates to oxidate magnetic material and manufacture field, particularly relate to a kind of nickel oxide-base ferrite core material for transformer.
Background technology
Along with the communication technology and the digitized development of electronic product; soft magnetic ferrite and element are proposed new requirement; high-performance high 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 the miniaturization of present electric equipment and high efficiency requirement, existing magnetic core is difficult to meet above-mentioned requirements;
Its magnetic energy product of permanent-magnet material that rare earth prepares is up to 150 times, 3～5 times of Al-Ni-Co permanent magnet material of carbon steel
, 8～10 times of permanent-magnet ferrite, temperature coefficient is low, magnetic stability, and coercivity is up to 800 kilo-amperes/rice.It is mainly used in the magnetic system of low speed torque motor, startup motor, sensor, magnetic bearing etc..Nd-Fe-B permanent magnet material is third generation rare earth permanent-magnetic material, and its remanent magnetism, coercivity and maximum magnetic energy product are higher than the former, non-friable, has preferable mechanical performance, and alloy density is low, beneficially the lightness of magnetic element, slimming, small-sized and subminaturization.
Summary of the invention
The object of the invention is contemplated to make up the defect of prior art, it is provided that a kind of nickel oxide-base ferrite core material for transformer.
The present invention is achieved by the following technical solutions:
A kind of nickel oxide-base ferrite core material for transformer, it includes that major ingredient and additive, described major ingredient include according to mol ratio: Fe2O3,13.0-18 of 60.2-66 mol
The manganese oxide of mol, 11.3-16
The zinc oxide of mol, the magnesia of 3-4mol, the sodium metasilicate of 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 includes according to the mass ratio range accounting for described ferrite 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；
Being mixed with silester by diethylenetriamines, stirring mixing 3-6 minute at 40-45 DEG C, add nickel oxide, stirring is to normal temperature；
Hexadecyltrimethylammonium chloride is joined in deionized water, stir, add each raw material after above-mentioned process, 600-800 rev/min of dispersed with stirring 17-20 minute, obtain premixed liquid；
It is the trimethylolpropane of 1-2:5-7:100, stearic acid, neodymia mixing by mass ratio, stirring mixing 30-40 minute at 58-65 DEG C, adding concentration is the acetic acid of 10-20%, 70-100 rev/min of dispersed with stirring 4-6 minute, add ammonium fluoride, stirring mixing 20-30 minute, adds premixed liquid, 400-500 rev/min of dispersed with stirring 1-2 hour, it is dried 20-30 minute at 80-100 DEG C, send into sintering furnace, sinter 4-6 hour at 300-350 DEG C, obtain described rare earth compounded magnetic conductive powder；
Described neodymia, acetic acid, the mol ratio of ammonium fluoride are 2-3:6-7:1-2；
Described nickel oxide is 60-80:1 with the mass ratio of neodymia.
The preparation method of a kind of nickel oxide-base ferrite core material for transformer, comprises the following steps:
(1) each raw material in addition to rare earth compounded magnetic conductive powder in above-mentioned major ingredient is sent into blending tank, 2500-3000 rev/min of stirring mixes 2-3 hour, send into rotary furnace pre-burning, pre-burning 2-3 hour at 350-400 DEG C, send into grinding pot, adding rare earth compounded magnetic conductive powder, being ground to fineness is 60-80 μm；
(2) additive being sent into grinding pot, add the 3 diethyl aminopropylamine of weight of additive 0.7-1%, being ground to fineness is 50-70 μm；
(3) each raw material after above-mentioned process is mixed, add the water of compound weight 20-30%, the pentaerythrite of 1-2%, stirring mixing 20-30 minute at 60-70 DEG C；
(4) it is spray-dried, is pressed into base, sintering, obtain the described nickel oxide-base ferrite core material for transformer.
The invention have the advantage that
The rare earth compounded magnetic conductive powder magnetic energy product that the ferrite 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, crystal grain uniform feature greatly.
Detailed description of the invention
Embodiment 1
A kind of nickel oxide-base ferrite core material for transformer, it is characterised in that it includes that major ingredient and additive, described major ingredient include according to mol ratio: the Fe2O3 of 60.2-mol, 18
The manganese oxide of mol, the zinc oxide of 11.3mol, the magnesia of 3mol, the sodium metasilicate of 0.2mol, the cobaltosic oxide of 0.6mol, the rare earth compounded magnetic conductive powder of 0.02 mol；Additive includes according to the mass ratio range accounting for described ferrite 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；
Being mixed with silester by diethylenetriamines, stirring mixing 6 minutes at 45 DEG C, add nickel oxide, stirring is to normal temperature；
Hexadecyltrimethylammonium chloride is joined in deionized water, stir, add each raw material after above-mentioned process, 800 revs/min of dispersed with stirring 17 minutes, obtain premixed liquid；
It is the trimethylolpropane of 1:7:100, stearic acid, neodymia mixing by mass ratio, stirring mixing 40 minutes at 65 DEG C, adding concentration is the acetic acid of 10-20%, 100 revs/min of dispersed with stirring 6 minutes, add ammonium fluoride, stirring mixing 30 minutes, adds premixed liquid, 500 revs/min of dispersed with stirring 2 hours, it is dried 20-30 minute at 80-100 DEG C, send into sintering furnace, sinter 4 hours at 350 DEG C, obtain described rare earth compounded magnetic conductive powder；
Described neodymia, acetic acid, the mol ratio of ammonium fluoride are 3:7:2；
Described nickel oxide is 60:1 with the mass ratio of neodymia.
The preparation method of a kind of nickel oxide-base ferrite core material for transformer, comprises the following steps:
(1) each raw material in addition to rare earth compounded magnetic conductive powder in above-mentioned major ingredient is sent into blending tank, 2500-3000 rev/min of stirring mixing 2-3 hour, send into rotary furnace pre-burning, pre-burning 3 hours at 400 DEG C, sending into grinding pot, add rare earth compounded magnetic conductive powder, being ground to fineness is 80 μm；
(2) additive being sent into grinding pot, add the 3 diethyl aminopropylamine of weight of additive 0.7%, being ground to fineness is 70 μm；
(3) each raw material after above-mentioned process is mixed, add the water of compound weight 30%, the pentaerythrite of 2%, stirring mixing 30 minutes at 60 DEG C；
(4) it is spray-dried, is pressed into base, sintering, obtain the described nickel oxide-base ferrite core material for transformer.
Through detecting, 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 more than 2700 μ i；
Maximum magnetic flux core loss (100Kc, 200mT) unit: KW/m3: 399(100±2℃)；
Curie temperature is higher than 240 DEG C.
Claims (2)
1. the nickel oxide-base ferrite core material for transformer, it is characterised in that it includes that major ingredient and additive, described major ingredient include: the Fe of 60.2-66 mol2O3, the manganese oxide of 13.0-18 mol, the zinc oxide of 11.3-16 mol, the magnesia of 3-4mol, the sodium metasilicate of 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 includes according to the mass ratio range accounting for described ferrite 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:
1) 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；A, being mixed with silester by diethylenetriamines, stirring mixing 3-6 minute at 40-45 DEG C, add nickel oxide, stirring is to normal temperature；B, hexadecyltrimethylammonium chloride is joined in deionized water, stir, add the material obtained through the process of step a, 600-800 rev/min of dispersed with stirring 17-20 minute, obtain premixed liquid；
2) by mass ratio be the trimethylolpropane of 1-2:5-7:100, stearic acid, neodymia mixing, stirring mixing 30-40 minute at 58-65 DEG C, adding concentration is the acetic acid of 10-20%, 70-100 rev/min of dispersed with stirring 4-6 minute, add ammonium fluoride, stirring mixing 20-30 minute, adds premixed liquid, 400-500 rev/min of dispersed with stirring 1-2 hour, it is dried 20-30 minute at 80-100 DEG C, send into sintering furnace, sinter 4-6 hour at 300-350 DEG C, obtain described rare earth compounded magnetic conductive powder；Described neodymia, acetic acid, the mol ratio of ammonium fluoride are 2-3:6-7:1-2；Described nickel oxide is 60-80:1 with the mass ratio of neodymia.
2. the preparation method of the nickel oxide-base ferrite core material being used for transformer as claimed in claim 1, it is characterised in that comprise the following steps:
(1) each raw material in addition to rare earth compounded magnetic conductive powder in above-mentioned major ingredient is sent into blending tank, 2500-3000 rev/min of stirring mixes 2-3 hour, send into rotary furnace pre-burning, pre-burning 2-3 hour at 350-400 DEG C, send into grinding pot, adding rare earth compounded magnetic conductive powder, being ground to fineness is 60-80 μm；
(2) additive being sent into grinding pot, add the 3 diethyl aminopropylamine of weight of additive 0.7-1%, being ground to fineness is 50-70 μm；
(3) material that step (1), step (2) obtain is mixed to obtain compound, add the water of compound weight 20-30%, the pentaerythrite of 1-2%, stirring mixing 20-30 minute at 60-70 DEG C；
(4) it is spray-dried, is pressed into base, sintering, obtain the described nickel oxide-base ferrite core material for transformer.
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| CN201410283350.3A CN104051108B (en) | 2014-06-24 | 2014-06-24 | A kind of nickel oxide-base ferrite core material for transformer |
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| CN104051108B true CN104051108B (en) | 2016-08-24 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| 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 |
| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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 |
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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 |