CN101572151A - Method for manufacturing iron-silicon alloy composite magnetic powder core with magnetic conductivity mu being equal to 60 - Google Patents
Method for manufacturing iron-silicon alloy composite magnetic powder core with magnetic conductivity mu being equal to 60 Download PDFInfo
- Publication number
- CN101572151A CN101572151A CNA2009100959046A CN200910095904A CN101572151A CN 101572151 A CN101572151 A CN 101572151A CN A2009100959046 A CNA2009100959046 A CN A2009100959046A CN 200910095904 A CN200910095904 A CN 200910095904A CN 101572151 A CN101572151 A CN 101572151A
- Authority
- CN
- China
- Prior art keywords
- iron
- silica flour
- add
- core
- iron silica
- 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.)
- Granted
Links
Landscapes
- Soft Magnetic Materials (AREA)
- Powder Metallurgy (AREA)
Abstract
The invention relates to a method for manufacturing iron-silicon alloy composite magnetic powder core with the magnetic conductivity mu being equal to 60, comprising the following steps: a) right amount of iron-silicon powder is taken, wherein, the content of Si is 6.5% and the rest content is Fe; the iron-silicon powder is crushed at high speed with the granularity mixture ratio: 34.5% of -100 to +250 meshes of granules and 65.5% of -250 meshes of granules; b) the prepared iron-silicon powder is roasted and fried until the temperature reaches 50-150 DEG C, then added with 0.2-3% of phosphoric acid liquid for superficial treatment, and added with silica gel to be continuously roasted and fried until being dried; c) after being cooled, the roasted and fried product is added with lubricant, so that iron-silicon powder mixture can be prepared; d) the iron-silicon powder mixture is pressed for shaping; e) heat treatment is carried out for 30-90min; f) strengthening treatment. The method has the advantages that 1. as the iron-silicon powder with low price is adopted, the production cost is greatly reduced; 2. the inductance and the power loss value are good, and the quality factor is proper; and 3. the Bs (16000 gauss) is high, the iron core loss is lower, and the DC bias field performance is good.
Description
Technical field
The invention belongs to soft magnetic material and make the field, belong to the ferro-silicium composite magnetic powder core, manufacturing method of magnetic permeability μ=60 particularly.
Background technology
Iron silicon (Fe-Si) μ=60 alloy composite magnetic powder cores have newly been risen in the world, being the result of electronic material development high frequencyization, miniaturization, low power consumption, is that features such as high Bs (magnetic flux density), high direct current superposition, low-lossization, big electric currentization are arranged in magnetic material.
Under the situation of global energy anxiety, low-loss development more and more is subjected to the welcome of electrical equipment, energy-conservation industry, it is mainly used in the Switching Power Supply inductor, the UPS power factor is proofreaied and correct (PFC) inductor, large scale liquid crystal demonstration inductor, automobile ABS system inductor etc., is the electronic technology product of a new generation.
Iron silicon (Fe-Si) alloy composite magnetic powder core divides by magnetic permeability, can be divided into μ=14,26,40,60,75,90,125,147; Its core structure has the O type, the E type, U type etc., be badly in need of most in the market, best-selling be μ=60, the exploitation of this magnetic core, industrialization are the important directions of current magnetic material development.Original Fe-Si alloy magnetic powder core, wherein Si can only contain below 3.0%.Through the effort of decades, now existing new breakthrough.Can reach 6.5%, and powder metallurgy new technology and new technology occur, its saturation induction density Bs reaches 16000 Gausses, and multiple magnetic permeability is arranged, for new material has been opened up new application.
Summary of the invention
Technical problem to be solved by this invention is: the ferro-silicium composite magnetic powder core, manufacturing method that a kind of magnetic permeability μ=60 are provided.Adopt the magnetic core of this method manufacturing to have high Bs (16000 Gauss), lower core loss and good dc bias field performance.
In order to solve the problems of the technologies described above, the present invention adopts following steps:
A) it is an amount of to get the iron silica flour, and wherein the content of si (percentage by weight) is 6.5%, and surplus is Fe, carrying out high speed pulverizes, sub-sieve becomes-100～+ 250 orders ,-250 order particulate material, and grain size proportion (percentage by weight): wherein-100～+ 250 the order particulate material accounts for 34.5%, and-250 order particulate material account for 65.5%;
B) roasting of the iron silica flour that makes is fried to add concentration when temperature reaches 50 ℃～150 ℃ be that the phosphoric acid liquid of 0.2～3% (percentage by weight) carries out surface treatment, addition is: add phosphoric acid liquid 10～90ml in every kilograms of iron silica flour, and adding silica gel, addition is: add silica gel 2～8 grams in every kilograms of iron silica flour, continue roasting and fry to dry;
C) cooling back adding lubricant is fried in roasting, and addition is to add lubricant 0.8～20 gram in every kilograms of iron silica flour, makes iron silica flour mixture;
D) compression moulding, pressure: 10～25 tons/cm
2
E) heat treatment: feed argon gas or nitrogen in 300 ℃～600 ℃ of the temperature, heat treated stove, heat-treated 30～90 minutes;
F) intensive treatment: the magnetic core of moulding is heated to 40 ℃～100 ℃ in baking oven, be incubated 10～60 minutes, be placed on and soak 20～90 minutes in the hardening agent, the volume ratio of magnetic core and hardening agent 1: 2～4, to soak good magnetic core placed 45～90 minutes at normal temperatures, and then in baking oven, be heated to 80 ℃～140 ℃, 1.5～3 hours time, make this product.
Described silica gel is selected the silicone glass cement for use.
In the iron silica flour mixture that step c) makes, add ceramic powder, addition is to add ceramic powder 3～20 grams in every kilograms of iron silica flour, and ceramic powder will carry out high speed earlier to be pulverized, and powder reaches-600 orders, and adding alcohol as diluent, the volume ratio of ceramic powder and alcohol is 1: 2.
Described hardening agent is that the acetone of 4～10% single-component epoxy resin and 90～98% is formulated by percentage by weight.
Described lubricant is to choose any one kind of them in molybdenum sulfide, zinc stearate, the dolomol.
The present invention is relative, and prior art has the following advantages: the iron silica flour that 1, the employing valency is low greatly reduces production cost; 2, adopt the high speed comminuting method, thereby make powder in product, reach certain particle size, have good inductance value, suitable quality factor, good power loss value;
3, the magnetic core of Zhi Zaoing, magnetic permeability μ is 60, has high Bs is arranged (16000 Gauss), lower core loss and good dc bias field performance.
Embodiment
Embodiment 1:
It is an amount of to get the iron silica flour, and wherein the content of si (percentage by weight) is 6.5%, and surplus is Fe, carry out high speed and pulverize, sub-sieve becomes-100～+ 250 orders ,-250 order particulate material, grain size proportion (percentage by weight), wherein-100～+ 250 the order particulate material accounts for 34.5%, and-250 order particulate material account for 65.5%; The roasting of the iron silica flour that makes fried to add concentration when temperature reaches 80 ℃ be that the phosphoric acid liquid of 0.2% (percentage by weight) carries out surface treatment, addition is: add phosphoric acid liquid 10ml in every kilograms of iron silica flour, and adding silica gel, addition is: add silica gel 5 grams in every kilograms of iron silica flour, continue roasting and fry to dry; Roasting is fried the cooling back and is added lubricant, and lubricant adopts molybdenum sulfide, and addition is to add molybdenum sulfide 0.8 gram in every kilograms of iron silica flour, makes iron silica flour mixture; Different sizes according to internal diameter, external diameter, height are pressed into annular magnetic core, pressure: 23 tons/cm
2Heat-treat: heat treatment temperature is 300 ℃, feeds argon gas (Ar) in the heat treated stove, heat-treats 90 minutes; Intensive treatment: the magnetic core of moulding is heated to 60 ℃ in baking oven, be incubated 40 minutes, be placed on and soak 30 minutes in the hardening agent, the volume ratio of magnetic core and hardening agent 1: 3, hardening agent is that 6% single-component epoxy resin and 94% the direct mixed preparing of acetone form by percentage by weight, will soak good magnetic core and place at normal temperatures 60 minutes, and then be heated to 120 ℃ in baking oven, 2 hours time, make this product.Silica gel is selected the silicone glass cement for use in the present embodiment, one-component silicone glass cement preferably, cold curing, low modulus silicone glass cement, curing rate is fast, has excellent weatherability, in 50～100 ℃ scope, change not quite, select the silicone glass cement for use, increase the lubrification of product, increased resistance value after the product heat treatment.
Embodiment 2:
It is an amount of to get the iron silica flour, and wherein the content of si (percentage by weight) is 6.5%, and surplus is Fe, carry out high speed and pulverize, sub-sieve becomes-100～+ 250 orders ,-250 order particulate material, grain size proportion (percentage by weight), wherein-100～+ 250 the order particulate material accounts for 34.5%, and-250 order particulate material account for 65.5%; The roasting of the iron silica flour that makes fried to add concentration when temperature reaches 100 ℃ be that the phosphoric acid liquid of 1% (percentage by weight) carries out surface treatment, addition is: add phosphoric acid liquid 50ml in every kilograms of iron silica flour, and adding silica gel, silica gel is selected the silicone glass cement for use in the present embodiment, addition is: add silica gel 6 grams in every kilograms of iron silica flour, continue roasting and fry to dry; Roasting is fried the cooling back and is added lubricant, and lubricant adopts zinc stearate, and addition is to add zinc stearate 6 grams in every kilograms of iron silica flour, makes iron silica flour mixture; In order to reach the inductance requirement, in making iron silica flour mixture, add ceramic powder again, addition is to add ceramic powder 12 grams in every kilograms of iron silica flour, ceramic powder will carry out high speed earlier and pulverize, powder reaches-600 orders, and adds alcohol as diluent, and the consumption of alcohol: the volume ratio of ceramic powder and alcohol is 1: 2, different sizes according to internal diameter, external diameter, height are pressed into annular magnetic core, pressure: 15 tons/cm
2Heat-treat: heat treatment temperature is 500 ℃, feeds nitrogen (N in the heat treated stove
2), heat-treated 60 minutes; Intensive treatment: the magnetic core of moulding is heated to 100 ℃ in baking oven, be incubated 20 minutes, be placed on and soak 60 minutes in the hardening agent, the volume ratio of magnetic core and hardening agent 1: 4, hardening agent is that 8% single-component epoxy resin and 92% the direct mixed preparing of acetone form by percentage by weight, will soak good magnetic core and place at normal temperatures 80 minutes, and then be heated to 120 ℃ in baking oven, 1.5 hours time, make this product.
Embodiment 3:
It is an amount of to get the iron silica flour, and wherein the content of si (percentage by weight) is 6.5%, and surplus is Fe, carry out high speed and pulverize, sub-sieve becomes-100～+ 250 orders ,-250 order particulate material, grain size proportion (percentage by weight), wherein-100～+ 250 the order particulate material accounts for 34.5%, and-250 order particulate material account for 65.5%; The roasting of the iron silica flour that makes fried to add concentration when temperature reaches 60 ℃ be that the phosphoric acid liquid of 3% (percentage by weight) carries out surface treatment, addition is: add phosphoric acid liquid 90ml in every kilograms of iron silica flour, and adding silica gel, silica gel is selected the silicone glass cement for use in the present embodiment, addition is: add silica gel 3 grams in every kilograms of iron silica flour, continue roasting and fry to dry; Roasting is fried the cooling back and is added lubricant, and lubricant adopts dolomol, and addition is to add dolomol 5 grams in every kilograms of iron silica flour, makes iron silica flour mixture; In order to reach the inductance requirement, in making iron silica flour mixture, add ceramic powder again, addition is to add ceramic powder 15 grams in every kilograms of iron silica flour, ceramic powder will carry out high speed earlier and pulverize, powder reaches-600 orders, and adds alcohol as diluent, and the consumption of alcohol: the volume ratio of ceramic powder and alcohol is 1: 2, different sizes according to internal diameter, external diameter, height are pressed into annular magnetic core, 16 tons/cm of pressure
2Heat-treat: heat treatment temperature is 400 ℃, feeds nitrogen (N in the heat treated stove
2), heat-treated 50 minutes; Intensive treatment: the magnetic core of moulding is heated to 80 ℃ in baking oven, be incubated 25 minutes, be placed on and soak 80 minutes in the hardening agent, the volume ratio of magnetic core and hardening agent 1: 2.5, hardening agent is that 5% single-component epoxy resin and 95% the direct mixed preparing of acetone form by percentage by weight, will soak good magnetic core and place at normal temperatures 60 minutes, and then be heated to 120 ℃ in baking oven, 2 hours time, make this product.
Adopt preparation method of the present invention can manufacture experimently into the magnetic core of μ=60, specification has ф 3.56, ф 3.94, ф 4.65, ф 6.35, ф 6.60, ф 6.86, ф 7.87, ф 9.65, ф 10.2, ф 11.2, ф 12.7, ф 16.5, ф 17.3, ф 20.3, ф 22.9, ф 23.6, ф 26.9, ф 33.0, ф 34.3, ф 35.8 ф 39.9, ф 46.7 ... the magnetic core of ф 77.8 (ф is an external diameter, and unit is mm).
Measurement of effectiveness of the present invention: frequency f, inductance L, quality factor Q value
(1) f, L, Q measure
1. ф=33.0*19.9*10.7,30 circles, L=N
2AL=30
2* 61 (μ H)=54.9 μ H, ф is an external diameter, unit is mm
f(KHZ) 1 10 50 100 200 400 600 800 1000
L(μH) 56.2 56.0 56.0 55.9 55.8 55.6 55.4 55.3 55.1
Q 0.57 5.41 23.3 33.1 32.2 22.8 17.0 13.8 11.0
2. ф=26.9*14.7*11.2,30 circles, L=N
2AL=30
2* 75 (μ H)=67.5 μ H, ф is an external diameter, unit is mm
f(KHZ) 1 10 50 100 200 400 600 800 1000
L(μH) 67.2 67.0 68.0 68.6 68.4 68.1 67.8 67.6 67.4
Q 1.31 12.3 40.7 45.9 37.0 23.6 17.3 14.2 12.0
(2) power loss test
1. ф=33.0*19.9*10.7 ф is an external diameter, and unit is mm
Power loss density, 100KHZ 300 Gausses 15 circle pcv=32.0mw/cm
3
50KHZ 300 Gausses 15 circle pcv=22.0mw/cm
3
2. ф=26.9*14.7*11.2 ф is an external diameter, and unit is mm
Power loss density, 100KHZ 300 Gausses 15 circle pcv=31.6mw/cm
3
50KHZ 300 Gausses 15 circle pcv=21.5mw/cm
3
(3) direct current superposition characteristic
ф=33.0*19.9*10.7 30 circle 50KHz ф are external diameter, and unit is mm
Direct current 0A 5A 10A 15A
50KHz inductance 58.8 μ H 52.7 μ H 48.8 μ H 45.4 μ H
Percentage 100% 89.6% 83.0% 77.2%
Magnetic field (Oe) 0 27.7 55.4 83.8
ф=26.9*14.7*11.2 30 circle 50KHz ф are external diameter, and unit is mm
Direct current 0A 5A 10A 15A
50KHz inductance 69.6 μ H 61.0 μ H 58.6 μ H 52.2 μ H
Percentage 100% 87.6% 81.3% 75.0%
Magnetic field (Oe) 0 14.6 29.2 34.9
Claims (5)
1, the ferro-silicium composite magnetic powder core, manufacturing method of magnetic permeability μ=60 is characterized in that may further comprise the steps:
A) it is an amount of to get the iron silica flour, and wherein the content of si (percentage by weight) is 6.5%, and surplus is Fe, carrying out high speed pulverizes, sub-sieve becomes-100～+ 250 orders ,-250 order particulate material, and grain size proportion (percentage by weight): wherein-100～+ 250 the order particulate material accounts for 34.5%, and-250 order particulate material account for 65.5%;
B) roasting of the iron silica flour that makes is fried to add concentration when temperature reaches 50 ℃～150 ℃ be that the phosphoric acid liquid of 0.2～3% (percentage by weight) carries out surface treatment, addition is: add phosphoric acid liquid 10～90ml in every kilograms of iron silica flour, and adding silica gel, addition is: add silica gel 2～8 grams in every kilograms of iron silica flour, continue roasting and fry to dry;
C) cooling back adding lubricant is fried in roasting, and addition is to add lubricant 0.8～20 gram in every kilograms of iron silica flour, makes iron silica flour mixture;
D) compression moulding, pressure: 10～25 tons/cm
2
E) heat treatment: feed argon gas or nitrogen in 300 ℃～600 ℃ of the temperature, heat treated stove, heat-treated 30～90 minutes;
F) intensive treatment: the magnetic core of moulding is heated to 40 ℃～100 ℃ in baking oven, be incubated 10～60 minutes, be placed on and soak 20～90 minutes in the hardening agent, the volume ratio of magnetic core and hardening agent is 1: 2～4, to soak good magnetic core placed 45～90 minutes at normal temperatures, and then in baking oven, be heated to 80 ℃～140 ℃, 1.5～3 hours time, make this product.
2, ferro-silicium composite magnetic powder core, manufacturing method as claimed in claim 1, it is characterized in that: described silica gel is selected the silicone glass cement for use.
3, ferro-silicium composite magnetic powder core, manufacturing method as claimed in claim 1 or 2, it is characterized in that: in the iron silica flour mixture that step c) makes, add ceramic powder, addition is to add ceramic powder 3～20 grams in every kilograms of iron silica flour, ceramic powder will carry out high speed earlier and pulverize, powder reaches-600 orders, and adding alcohol as diluent, the volume ratio of ceramic powder and alcohol is 1: 2.
4, ferro-silicium composite magnetic powder core, manufacturing method as claimed in claim 1 or 2 is characterized in that: described hardening agent is that the acetone of 4～10% single-component epoxy resin and 90～98% is formulated by percentage by weight.
5, ferro-silicium composite magnetic powder core, manufacturing method as claimed in claim 1 or 2, it is characterized in that: described lubricant is to choose any one kind of them in molybdenum sulfide, zinc stearate, the dolomol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100959046A CN101572151B (en) | 2009-02-19 | 2009-02-19 | Method for manufacturing iron-silicon alloy composite magnetic powder core with magnetic conductivity mu being equal to 60 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100959046A CN101572151B (en) | 2009-02-19 | 2009-02-19 | Method for manufacturing iron-silicon alloy composite magnetic powder core with magnetic conductivity mu being equal to 60 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101572151A true CN101572151A (en) | 2009-11-04 |
| CN101572151B CN101572151B (en) | 2011-08-24 |
Family
ID=41231472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100959046A Expired - Fee Related CN101572151B (en) | 2009-02-19 | 2009-02-19 | Method for manufacturing iron-silicon alloy composite magnetic powder core with magnetic conductivity mu being equal to 60 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101572151B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102294474A (en) * | 2011-08-17 | 2011-12-28 | 天通控股股份有限公司 | Ferrosilicon material and mu50 ferrosilicon magnetic powder core manufacturing method |
| CN102294476A (en) * | 2011-08-17 | 2011-12-28 | 天通控股股份有限公司 | Ferrosilicon material and mu75 ferrosilicon magnetic powder core manufacturing method |
| CN102294475A (en) * | 2011-08-17 | 2011-12-28 | 天通控股股份有限公司 | Ferrosilicon material and mu60 ferrosilicon magnetic powder core manufacturing method |
| CN102306525A (en) * | 2011-05-19 | 2012-01-04 | 浙江科达磁电有限公司 | Fe-Si alloy soft magnetic material with magnetic permeability mu of 26 and manufacturing method for Fe-Si alloy soft magnetic material |
| CN102303115A (en) * | 2011-08-17 | 2012-01-04 | 天通控股股份有限公司 | Manufacturing method of ferrum silicon material and mu26 ferrum silicon magnetic powder core |
| CN102314982A (en) * | 2011-05-19 | 2012-01-11 | 浙江科达磁电有限公司 | Ferrum-silicon alloy soft magnetic material special for solar energy and manufacturing method thereof |
| CN102314986A (en) * | 2011-05-19 | 2012-01-11 | 浙江科达磁电有限公司 | Ferrum-silicon alloy magnetic powder core and manufacturing method thereof |
| CN102314983A (en) * | 2011-05-19 | 2012-01-11 | 浙江科达磁电有限公司 | Ferrum-silicon alloy soft magnetic material with magnetic permeability mu being 90 and manufacturing method thereof |
| CN102360660A (en) * | 2011-05-19 | 2012-02-22 | 浙江科达磁电有限公司 | Iron-silicon alloy magnetic powder core with permeability mu of 50 and manufacturing method thereof |
| CN102360661A (en) * | 2011-05-19 | 2012-02-22 | 浙江科达磁电有限公司 | Iron-silicon alloy soft magnetic material with permeability mu of 75 and manufacturing method thereof |
| CN103430249A (en) * | 2011-03-24 | 2013-12-04 | 住友电气工业株式会社 | Composite material, reactor core, reactor, converter, and power conversion device |
| CN103839645A (en) * | 2013-12-19 | 2014-06-04 | 横店集团东磁股份有限公司 | Neu flux core material with permeability being 50 and preparing method thereof |
| CN104103413A (en) * | 2014-06-24 | 2014-10-15 | 湖州南浔闻天磁性材料有限公司 | Method for preparing magnetic powder core with high-flux magnet ring performance |
| CN107424710A (en) * | 2017-06-29 | 2017-12-01 | 安泰科技股份有限公司 | A kind of shield box class Fe-based amorphous powder core of magnetic permeability μ=60 and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19716882A1 (en) * | 1997-04-22 | 1998-10-29 | Basf Ag | Silicon-containing iron powder |
| US7435304B2 (en) * | 2002-11-11 | 2008-10-14 | Posco | Coating composition, and method for manufacturing high silicon electrical steel sheet using thereof |
| CN100541678C (en) * | 2007-11-29 | 2009-09-16 | 祁峰 | The manufacture method of the Fe-Si-Al magnetic core of magnetic permeability μ=125 |
| CN100530454C (en) * | 2007-11-29 | 2009-08-19 | 祁峰 | Method of preparing iron silicon aluminum magnetic powder core with magnetic-conductivity [Mu] of 26 |
-
2009
- 2009-02-19 CN CN2009100959046A patent/CN101572151B/en not_active Expired - Fee Related
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103430249A (en) * | 2011-03-24 | 2013-12-04 | 住友电气工业株式会社 | Composite material, reactor core, reactor, converter, and power conversion device |
| CN102360660A (en) * | 2011-05-19 | 2012-02-22 | 浙江科达磁电有限公司 | Iron-silicon alloy magnetic powder core with permeability mu of 50 and manufacturing method thereof |
| CN102314983A (en) * | 2011-05-19 | 2012-01-11 | 浙江科达磁电有限公司 | Ferrum-silicon alloy soft magnetic material with magnetic permeability mu being 90 and manufacturing method thereof |
| CN102306525A (en) * | 2011-05-19 | 2012-01-04 | 浙江科达磁电有限公司 | Fe-Si alloy soft magnetic material with magnetic permeability mu of 26 and manufacturing method for Fe-Si alloy soft magnetic material |
| CN102314982A (en) * | 2011-05-19 | 2012-01-11 | 浙江科达磁电有限公司 | Ferrum-silicon alloy soft magnetic material special for solar energy and manufacturing method thereof |
| CN102360661A (en) * | 2011-05-19 | 2012-02-22 | 浙江科达磁电有限公司 | Iron-silicon alloy soft magnetic material with permeability mu of 75 and manufacturing method thereof |
| CN102314986A (en) * | 2011-05-19 | 2012-01-11 | 浙江科达磁电有限公司 | Ferrum-silicon alloy magnetic powder core and manufacturing method thereof |
| CN102294475A (en) * | 2011-08-17 | 2011-12-28 | 天通控股股份有限公司 | Ferrosilicon material and mu60 ferrosilicon magnetic powder core manufacturing method |
| CN102294474A (en) * | 2011-08-17 | 2011-12-28 | 天通控股股份有限公司 | Ferrosilicon material and mu50 ferrosilicon magnetic powder core manufacturing method |
| CN102303115A (en) * | 2011-08-17 | 2012-01-04 | 天通控股股份有限公司 | Manufacturing method of ferrum silicon material and mu26 ferrum silicon magnetic powder core |
| CN102294475B (en) * | 2011-08-17 | 2013-06-05 | 天通控股股份有限公司 | Ferrosilicon material and mu60 ferrosilicon magnetic powder core manufacturing method |
| CN102294474B (en) * | 2011-08-17 | 2013-07-10 | 天通控股股份有限公司 | Ferrosilicon material and mu50 ferrosilicon magnetic powder core manufacturing method |
| CN102294476A (en) * | 2011-08-17 | 2011-12-28 | 天通控股股份有限公司 | Ferrosilicon material and mu75 ferrosilicon magnetic powder core manufacturing method |
| CN103839645A (en) * | 2013-12-19 | 2014-06-04 | 横店集团东磁股份有限公司 | Neu flux core material with permeability being 50 and preparing method thereof |
| CN103839645B (en) * | 2013-12-19 | 2016-04-20 | 横店集团东磁股份有限公司 | A kind of μ 50 iron tantnickel powder core material and preparation method thereof |
| CN104103413A (en) * | 2014-06-24 | 2014-10-15 | 湖州南浔闻天磁性材料有限公司 | Method for preparing magnetic powder core with high-flux magnet ring performance |
| CN107424710A (en) * | 2017-06-29 | 2017-12-01 | 安泰科技股份有限公司 | A kind of shield box class Fe-based amorphous powder core of magnetic permeability μ=60 and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101572151B (en) | 2011-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101572151B (en) | Method for manufacturing iron-silicon alloy composite magnetic powder core with magnetic conductivity mu being equal to 60 | |
| CN100541678C (en) | The manufacture method of the Fe-Si-Al magnetic core of magnetic permeability μ=125 | |
| CN102294474B (en) | Ferrosilicon material and mu50 ferrosilicon magnetic powder core manufacturing method | |
| CN102294476B (en) | Ferrosilicon material and mu75 ferrosilicon magnetic powder core manufacturing method | |
| CN112530655B (en) | Low-power-consumption soft magnetic alloy material and preparation method and application thereof | |
| CN105304308A (en) | Fe-Si-Al magnetic core preparation method and inorganic composite insulation coating material for magnetic core | |
| CN111063501B (en) | Preparation method of low-loss powder for producing integrally-formed inductor | |
| CN102623121A (en) | Method for manufacturing iron-silicon material and Mu-90 iron-silicon magnetic powder core | |
| CN104505208A (en) | Preparation method of low-loss high-superposition sendust material with magnetic conductivity mu equal to 26 | |
| CN102294475B (en) | Ferrosilicon material and mu60 ferrosilicon magnetic powder core manufacturing method | |
| CN100530454C (en) | Method of preparing iron silicon aluminum magnetic powder core with magnetic-conductivity [Mu] of 26 | |
| CN102982955B (en) | Iron-silicon soft magnetic alloy power and manufacturing method thereof | |
| CN102303115B (en) | Manufacturing method of ferrum silicon material and mu26 ferrum silicon magnetic powder core | |
| CN113380483B (en) | Composite soft magnetic material and preparation method thereof | |
| CN102543345B (en) | Low-power consumption sendust material of magnetic permeability μ=26 and preparation method thereof | |
| CN102982991B (en) | Preparation method for silicone iron cores with magnetic conductivity of 125 | |
| CN110453156B (en) | Iron-based micro-nano magnetic powder material and preparation method thereof | |
| CN104036903B (en) | A kind of preparation method of ferrum tantnickel powder core | |
| CN111161934A (en) | Amorphous nano Fe-Ni magnetic powder core and preparation method and application thereof | |
| CN113451039B (en) | FeSi-based water atomized Fe-Si-Cr soft magnetic powder core and preparation method thereof | |
| CN103551565B (en) | The manufacture method of soft magnet silicon, aluminum and nickel alloy powder | |
| CN102982989B (en) | Manufacturing method for ferrum-silicon-aluminum magnetic cores | |
| CN112908603A (en) | Iron-based amorphous magnetic powder core and preparation method thereof | |
| CN113096948B (en) | High-permeability and high-saturation soft magnetic alloy material and preparation method thereof | |
| CN110957096A (en) | Iron-silicon-aluminum magnetic core and preparation process thereof |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110824 Termination date: 20130219 |