CN102982951B - One contains Nb2O5The manufacture method of ferromagnetic core - Google Patents
One contains Nb2O5The manufacture method of ferromagnetic core Download PDFInfo
- Publication number
- CN102982951B CN102982951B CN201210481435.3A CN201210481435A CN102982951B CN 102982951 B CN102982951 B CN 102982951B CN 201210481435 A CN201210481435 A CN 201210481435A CN 102982951 B CN102982951 B CN 102982951B
- Authority
- CN
- China
- Prior art keywords
- hour
- ball milling
- sintering
- speed
- nitrogen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The invention discloses one and contain Nb2O5The manufacture method of ferromagnetic core, comprise the following steps: calculate by weight reduced iron powder 67-75, brown iron oxide 9-11, MnO 2.8-3.2, ZnO 2-5, modified titanium 2-3, Nb2O5 1.5-3、SnO2 2.2-2.8、CaCO3 0.8-1.2、Al2O3 2.5-3.5、Fe3O41.8-2.2 prepares burden, then successively by pre-burning, ball milling, secondary ball milling, moulding and a sintering and get final product; Core formulation of the present invention is reasonable, and preparation method is simple, and the magnetic core saturation induction density making is higher, loss is lower, and heatproof is higher, and the present invention is simultaneously by adding modified titanium composition, can be used as the bridge combination between different material, use feed distribution is better, and density is high, grain boundary resistance rate is high, the porosity is low, crystal grain is large and even, there will not be crackle when sintering, dense structure, be out of shape little, rational modification composition of raw materials, in sintering process, deformation extent is small; Can line cutting, cutting, grinding etc.
Description
Technical field
The invention belongs to PM technique, be specifically related to one and contain Nb2O5The manufacture method of ferromagnetic core.
Background technology
The saturation induction density of magnetic powder core is generally about 9000-11000 Gauss, at the alternation of 100-2000 hertzIn electric field, iron loss is very large. Sendust core saturation induction density is generally about 5000-9000 Gauss, and iron loss is also lower, but itMaterial mechanical strength too low; Ferritic saturation induction density is about 2700-4200 Gauss, and iron loss situation is quite good,But saturation induction density is too low, and should not cut.
Summary of the invention
In order to alleviate shortcomings and deficiencies of the prior art, the object of the present invention is to provide one to contain Nb2O5Ferromagnetic coreManufacture method.
The present invention adopts following technical scheme to achieve these goals:
Contain Nb2O5The manufacture method of ferromagnetic core, comprise the following steps:
(1) proportioning of raw material is to calculate by weight, reduced iron powder 67-75, brown iron oxide 9-11, MnO2.8-3.2,ZnO2-5, modified titanium 2-3, Nb2O51.5-3、SnO22.2-2.8、CaCO30.8-1.2、Al2O32.5-3.5、Fe3O41.8-2.2, described modified titanium is prepared by the following method:
A, trees ashes are soaked after 2-3 hour with the sodium hydroxide solution of 15-18%;
B, use 15-18% hydrochloric acid solution soak 2-3 hour;
C, washing repeatedly by deionized water, is neutral to trees ashes, dries;
D, be ground to 0.8-1.0 μ m powder, obtain modification trees ashes;
E, in titanium dioxide, add and be equivalent to the modification trees ashes obtained above of its weight 3-5%, the nanometer two of 1-2%Silica, is fully mixed to get;
(2) pre-burning: by remove outside modified titanium raw material add water and carry out ball milling 1-2 hour one time with dispersant,Then spraying is dry, carries out pre-burning, and calcined temperature is 870-900 DEG C, and the pre-burning time is 1-2 hour;
(3) secondary ball milling: by a ball milling material, add water and dispersant to carry out secondary ball milling 1-2 hour, spraying is dry,Make 180-220 order pellet;
(4) moulding: secondary ball abrasive material is mixed with modified titanium, 15000-18000 rev/min, high speed dispersion 1-1.5 is littleTime, then add binding agent to be pressed into base;
(5) sintering: put the moulded blank after above-mentioned moulding into sintering furnace, at the nitrogen of 0.05-0.08% oxygen volume contentIn atmosphere, be first warming up to 670-700 DEG C with 160-180 DEG C/h of speed, insulation 1-2 hour; At 0.5-1.2% oxygen volume contentIn blanket of nitrogen, while being warming up to 750-800 DEG C with 120-140 DEG C/h of speed, insulation 0.5-1.5 hour; Amass and contain at 3-5% oxysomeIn the blanket of nitrogen of amount, then be warming up to 1350-1400 DEG C with 80-110 DEG C/h of speed, the sintered heat insulating time is 3-5 hour; BurnAfter knot in the blanket of nitrogen of 0.05-0.1% oxygen volume content with after the cooling of 60-70 DEG C/h of speed and get final product.
Beneficial effect of the present invention:
Core formulation of the present invention is reasonable, and preparation method is simple, and the magnetic core saturation induction density making is higher, and lossLow, heatproof is higher, and simultaneously the present invention is by adding modified titanium composition, can be used as bridge between different material in conjunction with workWith, use feed distribution better, density is high, grain boundary resistance rate is high, the porosity is low, crystal grain is large and even, when sintering, there will not beCrackle, dense structure, be out of shape little, rational modification composition of raw materials, in sintering process, deformation extent is small; Can line cutting, cutting,Grind etc.
Detailed description of the invention
Embodiment 1: contain Nb2O5The manufacture method of ferromagnetic core, comprise the following steps:
(1) for by weight, (jin) calculates the proportioning of raw material, reduced iron powder 72, brown iron oxide 10, MnO3, ZnO3.5,Modified titanium 2.5, Nb2O52.3、SnO22.5、CaCO31、Al2O33、Fe3O42, described modified titanium by withBelow legal system is standby:
A, trees ashes are soaked after 2-3 hour with 15% sodium hydroxide solution;
B, with 15% hydrochloric acid solution soak 2-3 hour;
C, washing repeatedly by deionized water, is neutral to trees ashes, dries;
D, be ground to 0.8-1.0 μ m powder, obtain modification trees ashes;
E, in titanium dioxide, add and be equivalent to the modification trees ashes obtained above of its weight 4%, 1.5% nano-silicaSiClx, is fully mixed to get;
(2) pre-burning: by remove outside modified titanium raw material add water and carry out ball milling 1-2 hour one time with dispersant,Then spraying is dry, carries out pre-burning, and calcined temperature is 880 DEG C, and the pre-burning time is 1-2 hour;
(3) secondary ball milling: by a ball milling material, add water and dispersant to carry out secondary ball milling 1-2 hour, spraying is dry,Make 200 order pellets;
(4) moulding: secondary ball abrasive material is mixed with modified titanium, 16500 revs/min, high speed dispersion 1-1.5 hour, soAfter add binding agent to be pressed into base;
(5) sintering: put the moulded blank after above-mentioned moulding into sintering furnace, at the nitrogen of 0.05-0.08% oxygen volume contentIn atmosphere, be first warming up to 690 DEG C with 170 DEG C/h of speed, insulation 1-2 hour; In the blanket of nitrogen of 0.5-1.2% oxygen volume contentIn, while being warming up to 770 DEG C with 130 DEG C/h of speed, insulation 0.5-1.5 hour; In the blanket of nitrogen of 3-5% oxygen volume content,Be warming up to 1380 DEG C with 95 DEG C/h of speed again, the sintered heat insulating time is 3-5 hour; After sintering, amass and contain at 0.05-0.1% oxysomeIn the blanket of nitrogen of amount with after the cooling of 65 DEG C/h of speed and get final product.
The saturation induction density of the magnetic core making by above-described embodiment is in 13800-15500 Gauss; At 400 hertzSituation under be 0.5 millimeter with thickness non-oriented silicon steel sheet is compared, reduce iron loss 89%, low temperature type magnetic core can reach 495DEG C; High temperature type magnetic core can reach 825 DEG C; In the time of 10KHz, initial permeability reaches 6600-7800; Utilize magnetic core of the present invention to existIn the alternating electric field of 200-1100 hertz, use, compare with ferrite, volume can be contracted to 35-38%.
Claims (1)
1. one kind contains Nb2O5The manufacture method of ferromagnetic core, it is characterized in that comprising the following steps:
(1) proportioning of raw material is calculating by weight, reduced iron powder 67-75, brown iron oxide 9-11, MnO2.8-3.2, ZnO2-5, modified titanium 2-3, Nb2O51.5-3、SnO22.2-2.8、CaCO30.8-1.2、Al2O32.5-3.5、Fe3O41.8-2.2；
Described modified titanium is prepared by the following method:
A, trees ashes are soaked after 2-3 hour with the sodium hydroxide solution of 15-18%;
B, use 15-18% hydrochloric acid solution soak 2-3 hour;
C, washing repeatedly by deionized water, is neutral to trees ashes, dries;
D, be ground to 0.8-1.0 μ m powder, obtain modification trees ashes;
E, in titanium dioxide, add and be equivalent to the modification trees ashes obtained above of its weight 3-5%, the nanometer titanium dioxide of 1-2%Silicon, is fully mixed to get;
(2) pre-burning: add water and carry out ball milling 1-2 hour a time with dispersant, then spray removing raw material outside modified titaniumMist is dry, carries out pre-burning, and calcined temperature is 870-900 DEG C, and the pre-burning time is 1-2 hour;
(3) secondary ball milling: by a ball milling material, add water and dispersant to carry out secondary ball milling 1-2 hour, spraying is dried, makes180-220 order pellet;
(4) moulding: secondary ball abrasive material is mixed with modified titanium, 1500-1800 rev/min, high speed dispersion 1-1.5 hour, soAfter add binding agent to be pressed into base;
(5) sintering: put the moulded blank after above-mentioned moulding into sintering furnace, in the blanket of nitrogen of 0.05-0.08% oxygen volume contentIn, be first warming up to 670-700 DEG C with 160-180 DEG C/h of speed, insulation 1-2 hour; At the nitrogen of 0.5-1.2% oxygen volume contentIn atmosphere, while being warming up to 750-800 DEG C with 120-140 DEG C/h of speed, insulation 0.5-1.5 hour; At 3-5% oxygen volume contentBlanket of nitrogen in, then be warming up to 1350-1400 DEG C with 80-110 DEG C/h of speed, the sintered heat insulating time is 3-5 hour; SinteringAfter in the blanket of nitrogen of 0.05-0.1% oxygen volume content with after the cooling of 60-70 DEG C/h of speed and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481435.3A CN102982951B (en) | 2012-11-23 | 2012-11-23 | One contains Nb2O5The manufacture method of ferromagnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210481435.3A CN102982951B (en) | 2012-11-23 | 2012-11-23 | One contains Nb2O5The manufacture method of ferromagnetic core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102982951A CN102982951A (en) | 2013-03-20 |
| CN102982951B true CN102982951B (en) | 2016-05-04 |
Family
ID=47856846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210481435.3A Active CN102982951B (en) | 2012-11-23 | 2012-11-23 | One contains Nb2O5The manufacture method of ferromagnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102982951B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5840802A (en) * | 1981-09-03 | 1983-03-09 | Yamauchi Rubber Ind Co Ltd | Composite permanent magnet material |
| CN1294099A (en) * | 1999-10-12 | 2001-05-09 | Tdk株式会社 | Nickel-Mn-Zn Series ferrite |
| CN1750182A (en) * | 2004-09-13 | 2006-03-22 | 广东风华高新科技集团有限公司 | Nickel-zinc soft magnet ferrite material, inductor product and its producing method |
| CN102300831A (en) * | 2009-01-29 | 2011-12-28 | 杰富意化学株式会社 | MnZnCo ferrite core and manufacturing method therefor |
-
2012
- 2012-11-23 CN CN201210481435.3A patent/CN102982951B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5840802A (en) * | 1981-09-03 | 1983-03-09 | Yamauchi Rubber Ind Co Ltd | Composite permanent magnet material |
| CN1294099A (en) * | 1999-10-12 | 2001-05-09 | Tdk株式会社 | Nickel-Mn-Zn Series ferrite |
| CN1750182A (en) * | 2004-09-13 | 2006-03-22 | 广东风华高新科技集团有限公司 | Nickel-zinc soft magnet ferrite material, inductor product and its producing method |
| CN102300831A (en) * | 2009-01-29 | 2011-12-28 | 杰富意化学株式会社 | MnZnCo ferrite core and manufacturing method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102982951A (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102982946B (en) | One contains La2O3The manufacture method of ferromagnetic core | |
| CN102976741B (en) | Preparation method of manganese zinc MnZn soft magnetic ferrite material containing modified nanocarbon | |
| CN102992750B (en) | Preparation method of high-performance manganese-zinc MnZn soft magnetic ferrite material | |
| CN103058643B (en) | Mn-Zn soft magnetic ferrite material with high, temperature, high superposition and low power consumption, and preparation method of Mn-Zn soft magnetic ferrite material | |
| CN103664154B (en) | High frequency high resistivity Li-Ti-Zn soft magnetic ferrite formula and technique | |
| CN108424136B (en) | MnZn power ferrite for MHz-level switching power supply and preparation method thereof | |
| CN103951411A (en) | Wide-temperature-range low-power-consumption high-Curie-temperature manganese/zinc ferrite material and preparation method thereof | |
| CN102982953B (en) | One contains Cr2O3The manufacture method of ferromagnetic core | |
| CN102992754B (en) | Preparation method of MnZn soft magnetic ferrite material with high magnetic flux density | |
| CN102992748B (en) | Preparation method of MnZn (Manganese-Zinc) soft magnetic ferrite material containing modified nanoscale titanium dioxide | |
| CN103626486A (en) | Strontium calcium ferrite pre-sintering material and preparation method thereof | |
| CN102992747B (en) | Preparation method of MnZn (Manganese-Zinc) soft magnetic ferrite material containing modified nano argil | |
| CN103708818B (en) | The high-Curie-point High Initial Permeability MnZn Ferrite Materials at two-20 DEG C, peaks and preparation method thereof | |
| CN102982950B (en) | One contains TiO2The manufacture method of ferromagnetic core | |
| CN103664155B (en) | Ultrahigh-Bs (saturation magnetic flux density) low-loss MnZn powder ferrite material and making method thereof | |
| CN102992746B (en) | Preparation method of high-permeability MnZn soft magnetic ferrite | |
| CN104591720B (en) | Electrical engineering ferrite magnetic material | |
| CN102982951B (en) | One contains Nb2O5The manufacture method of ferromagnetic core | |
| CN102982949B (en) | A kind of containing MoO3the manufacture method of ferromagnetic core | |
| CN102982945B (en) | A kind of manufacture method of the ferromagnetic core that contains CaO | |
| CN106554197A (en) | The method that high-performance permanent-magnet ferrite is prepared by composite algorithm | |
| CN102982947B (en) | One contains Bi2O3The manufacture method of ferromagnetic core | |
| CN103073277A (en) | Sintering technology of high-frequency MnZn power ferrite material | |
| CN103613370A (en) | Preparation method for high-temperature and high-BS manganese zinc ferrite material with low power consumption | |
| CN102992753B (en) | Low power consumption preparation method of Mn-Zn soft magnetic ferrite material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |