CN102674846B - Method for manufacturing high permeability magnetic core - Google Patents
Method for manufacturing high permeability magnetic core Download PDFInfo
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- CN102674846B CN102674846B CN201210097053.0A CN201210097053A CN102674846B CN 102674846 B CN102674846 B CN 102674846B CN 201210097053 A CN201210097053 A CN 201210097053A CN 102674846 B CN102674846 B CN 102674846B
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000035699 permeability Effects 0.000 title claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 230000008569 process Effects 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 19
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 14
- UDSAIICHUKSCKT-UHFFFAOYSA-N bromophenol blue Chemical compound C1=C(Br)C(O)=C(Br)C=C1C1(C=2C=C(Br)C(O)=C(Br)C=2)C2=CC=CC=C2S(=O)(=O)O1 UDSAIICHUKSCKT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000009413 insulation Methods 0.000 claims abstract description 10
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 claims abstract description 8
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000004408 titanium dioxide Substances 0.000 claims abstract description 8
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 238000005245 sintering Methods 0.000 claims description 23
- 239000003595 mist Substances 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000010304 firing Methods 0.000 abstract 4
- 238000005469 granulation Methods 0.000 abstract 1
- 230000003179 granulation Effects 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 238000010792 warming Methods 0.000 abstract 1
- 229910000859 α-Fe Inorganic materials 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000696 magnetic material Substances 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 208000037656 Respiratory Sounds Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- XMNVMZIXNKZAJB-UHFFFAOYSA-N iron(3+);lead(2+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Fe+3].[Fe+3].[Pb+2].[Pb+2] XMNVMZIXNKZAJB-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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- Soft Magnetic Materials (AREA)
- Magnetic Ceramics (AREA)
Abstract
The invention relates to a method for manufacturing a high permeability magnetic core, which has low manufacture cost and high permeability, and comprises the following steps of burdening, mixing, spraying granulation, compressing to form a green body, and firing the green body, wherein in burdening, one or several of tetrabromo phenolsulfonphthalein, calcium carbonate, stannic oxide, titanium dioxide is/are added in manganese zinc ferrite powder; in the mixing process, the powder is proportioned by adopting oxidation style so as to mix the powder; and in the green body firing process, the heating temperature is controlled between 1300 and 1600 DEG C, and the heat insulation temperature is controlled in 4-6 hours. The method has the advantages that the products produced by the method have initial permeability of 22000, the problems of the control of the proportion of powder manufactured by high-performance and high-permeability magnetic core and the added assistant, the density control of molded green body, the cracking due to warming or cooling in firing, magnetism fissure, residual magnetism in firing and the like are solved, and manufacture cost is lowered.
Description
Technical field
The present invention relates to a kind of oxidate magnetic material and manufacture field.Relate in particular to a kind of high magnetic permeability magnetic core manufacture method.
Background technology
High-performance high magnetic permeability soft magnetic materials is a kind of purposes is wide, output is large, cost is low electronic industry and the base mateiral of mechanotronics and factory's industry, be one of its important pillar product, its application directly affects the development of electronic information, household electrical appliances industry, computer and communication, environmental protection and power-saving technology.
Along with the communication technology and the digitized development of electronic product, soft magnetic ferrite and element have been proposed to new requirement, the invention of high-performance high magnetic permeability magnetic core and practical, so far half a century, because it has high-performance, high magnetic permeability, high resistivity and low-loss, thereby be widely applied in the fields such as electron beam deflection coils, wave filter, kickback transformer, supply transformer and coil of televisor.No matter domestic, or the external ferric oxide that all adopts high purity at present when manufacturing soft magnetic materials, removes silicon, and sintering time is longer, because powder and additive formula control, moulding green density that soft magnetic ferrite is produced are controlled sintering time control imperfection, caused sintering intensification, cooling to be ftractureed, manufacturing cost is very large.For kickback transformer, FERRITE CORE especially for supply transformer and wave filter has more and more required to have low core loss and high magnetic permeability, to meet microminiaturization and the high efficiency requirement of present electrical equipment, existing magnetic permeability is 18000, does not reach the requirement of high magnetic permeability.
Summary of the invention
The object of this invention is to provide a kind of manufacturing cost little, the high magnetic permeability magnetic core manufacture method that magnetic permeability is high.
For achieving the above object, the technical solution adopted in the present invention is:
A high magnetic permeability magnetic core manufacture method, comprising: batching, doping, mist projection granulating, is pressed into green compact, green sintering step; Its feature is:
A, in blending process, in manganese-zinc ferrite powder, add one or more in tetrabromophenolsulfonphthalein, calcium carbonate, tindioxide, titanium dioxide; Deal is 500-6000ppm; In described interpolation batching, wherein selecting tetrabromophenolsulfonphthalein and titanium dioxide deal is 5000ppm;
B, in the process of doping, adopt oxidation style proportioning powder, powder is carried out to doping treatment;
C, in green sintering step process, green sintering can be divided into intensification, insulation and three steps of cooling, the temperature of intensification is controlled at 1600 ℃, the time of insulation is controlled at 4-6 hour.
According to above-mentioned high magnetic permeability magnetic core manufacture method, its feature is: in described blending process, add tetrabromophenolsulfonphthalein and calcium carbonate in manganese-zinc ferrite powder, deal is 800-4500ppm.
According to above-mentioned high magnetic permeability magnetic core manufacture method, its feature is: in described green sintering step process, the intensification temperature of green sintering is controlled at 1600 ℃, and the time of insulation is controlled at 6 hours.
Advantage of the present invention is: the present invention has changed original formulation, in manganese-zinc ferrite powder, add appropriate tetrabromophenolsulfonphthalein, calcium carbonate, tindioxide, one or more in titanium dioxide are as NEW TYPE OF COMPOSITE auxiliary agent, difference due to materials'use, exist structural minute differences, production technology is had to different requirements from product performance aspect, so the time that the temperature heating up is controlled and is incubated is controlled and has strict requirement, adopting the initial permeability of the product that high magnetic permeability magnetic core manufacture method of the present invention produces is 22000, the outstanding powder that has solved high-performance high magnetic permeability core production is controlled with interpolation auxiliary agent proportioning, moulding green density is controlled, sintering heats up and ftractures, cooling cracking, magnetic crackle, the problems such as sintering residual magnetism, reduced production cost.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described:
A high magnetic permeability magnetic core manufacture method, comprising: batching, doping, mist projection granulating, is pressed into green compact, green sintering step;
A, in blending process, in manganese-zinc ferrite powder, add one or more in tetrabromophenolsulfonphthalein, calcium carbonate, tindioxide, titanium dioxide; Deal is 500-6000ppm; In affecting high frequency high magnetic conductivity ferrite electromagnetic performance factors, additive is one of topmost factor, additive in Ferrite Material mainly contains and fluxes, mineralising, resistance brilliant and improve the effect of electromagnetic performance, want effectively to improve initial permeability, saturation induction density, Curie temperature and resistivity, just must be in Mn-Zn ferrite formula, add chemical assistant, change its performance and effect, significantly improve magnetic permeability, improve ferritic temperature profile.
B, in the process of doping, adopt oxidation style proportioning powder, powder is carried out to doping treatment; Doping is the effective measure of improving ferrite performance, to improving ferritic performance, has important meaning.
C, in green sintering step process, green sintering can be divided into intensification, insulation and three steps of cooling, the temperature of intensification is controlled at 1300-1600 ℃, the time of insulation is controlled at 4-6 hour; The object of sintering is that pulverulent material is changed into DB, it is a complicated physical and chemical process, for height, lead Ferrite Material, sintering process is the most important link that affects its final performance and application, will there is physical change and chemical transformation in the sintering process of high magnetic conductivity ferrite product, this process will determine geometrical dimension and the electromagnetic performance of magnetic core.
In the present embodiment, in blending process, add tetrabromophenolsulfonphthalein and calcium carbonate in manganese-zinc ferrite powder, deal is 800-4500ppm.
In the present embodiment, in blending process, in manganese-zinc ferrite powder, adding tetrabromophenolsulfonphthalein and titanium dioxide deal is 600-5000ppm.
In the present embodiment, in green sintering step process, the intensification intensification temperature of green sintering is controlled at 1400 ℃, and the time of insulation is controlled at 6 hours.
The basic mechanical design feature index that the product of gained of the present invention reaches
The invention has the beneficial effects as follows: use the product initial permeability of gained of the present invention can reach 22000, saturation induction intensity Bs is more than 566mT, remanent magnetism Br (25 ℃) 161mT, coercivity H (25 ℃) 2.33A/m.
Embodiment recited above is described the preferred embodiment of the present invention; not design of the present invention and protection domain are limited; do not departing under the prerequisite of design concept of the present invention; various modification and improvement that in this area, common engineering technical personnel make technical scheme of the present invention, all should fall into protection scope of the present invention.
Claims (2)
1. a high magnetic permeability magnetic core manufacture method, comprising: batching, doping, mist projection granulating, is pressed into green compact, green sintering step; It is characterized in that:
A, in blending process, in manganese-zinc ferrite powder, add one or more in tetrabromophenolsulfonphthalein, calcium carbonate, tindioxide, titanium dioxide; In described interpolation batching, wherein select tetrabromophenolsulfonphthalein and titanium dioxide, deal is 5000ppm;
B, in the process of doping, adopt oxidation style proportioning powder, powder is carried out to doping treatment;
C, in green sintering step process, green sintering can be divided into intensification, insulation and three steps of cooling, the temperature of intensification is controlled at 1600 ℃, the time of insulation is controlled at 4-6 hour.
2. high magnetic permeability magnetic core manufacture method according to claim 1, is characterized in that: in described green sintering step process, the intensification temperature of green sintering is controlled at 1600 ℃, and the time of insulation is controlled at 6 hours.
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| CN201210097053.0A CN102674846B (en) | 2012-03-27 | 2012-03-27 | Method for manufacturing high permeability magnetic core |
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| CN201210097053.0A CN102674846B (en) | 2012-03-27 | 2012-03-27 | Method for manufacturing high permeability magnetic core |
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| CN102674846A CN102674846A (en) | 2012-09-19 |
| CN102674846B true CN102674846B (en) | 2014-12-03 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108053997A (en) * | 2017-12-22 | 2018-05-18 | 山东恒瑞磁电科技有限公司 | A kind of screening technique for improving FERRITE CORE magnetic conductivity |
| CN108611508B (en) * | 2017-12-22 | 2019-03-26 | 山东恒瑞磁电科技有限公司 | A kind of new-energy automobile magnetic core manufacturing method |
| CN108558386B (en) * | 2017-12-22 | 2019-04-16 | 山东恒瑞磁电科技有限公司 | A kind of wireless charging magnetic sheet screening technique |
| CN108364779A (en) * | 2017-12-22 | 2018-08-03 | 山东恒瑞磁电科技有限公司 | A kind of sintering system and its method improving FERRITE CORE magnetic conductivity |
| CN108447675B (en) * | 2017-12-22 | 2019-01-15 | 山东恒瑞磁电科技有限公司 | A kind of wireless charging magnetic sheet manufacturing method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889204A (en) * | 2006-07-06 | 2007-01-03 | 沈永春 | Soft magnetic MnZn ferrite material and producing method thereof |
| CN101236829A (en) * | 2007-12-07 | 2008-08-06 | 广东风华高新科技股份有限公司 | A making method for magnetic core of Mn-Zn soft magnetic ferrite |
| CN101913851A (en) * | 2010-07-12 | 2010-12-15 | 广东风华高新科技股份有限公司 | Wide-temperature high-permeability Mn-Zn soft magnetic ferrite material and magnetic core prepared therefrom as well as preparation method thereof |
-
2012
- 2012-03-27 CN CN201210097053.0A patent/CN102674846B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1889204A (en) * | 2006-07-06 | 2007-01-03 | 沈永春 | Soft magnetic MnZn ferrite material and producing method thereof |
| CN101236829A (en) * | 2007-12-07 | 2008-08-06 | 广东风华高新科技股份有限公司 | A making method for magnetic core of Mn-Zn soft magnetic ferrite |
| CN101913851A (en) * | 2010-07-12 | 2010-12-15 | 广东风华高新科技股份有限公司 | Wide-temperature high-permeability Mn-Zn soft magnetic ferrite material and magnetic core prepared therefrom as well as preparation method thereof |
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Denomination of invention: Manufacturing method of high permeability magnetic core Effective date of registration: 20210826 Granted publication date: 20141203 Pledgee: Shandong Tengzhou rural commercial bank Limited by Share Ltd. SME branch Pledgor: SHANDONG HENGRUI MAGNET TECHNOLOGY Co.,Ltd. Registration number: Y2021980008425 |
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Address after: No. 666 Guangyuan East Road, Tengzhou City, Zaozhuang City, Shandong Province, 277500 Patentee after: Shandong Hengrui Magneto Co.,Ltd. Address before: 277500 Tengzhou Economic Development Zone, Shandong Province (north of Guangyuan Road and east of Tasi South Road) Patentee before: SHANDONG HENGRUI MAGNET TECHNOLOGY CO.,LTD. |
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