CN1050108A - Making method of cutting amorphous inductive magnetic core - Google Patents
Making method of cutting amorphous inductive magnetic core Download PDFInfo
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- CN1050108A CN1050108A CN 89106983 CN89106983A CN1050108A CN 1050108 A CN1050108 A CN 1050108A CN 89106983 CN89106983 CN 89106983 CN 89106983 A CN89106983 A CN 89106983A CN 1050108 A CN1050108 A CN 1050108A
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- magnetic core
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Abstract
The invention belongs to amorphous soft magnetic material and magnetic core manufacture craft.With Fe-based amorphous its composition of being with is the surplus MeO～4Si3.5 of Fe～12, and B13～16C0～2 are wound into magnetic core after after 430 ℃ of annealing, with epoxy resin magnetic core is carried out the envelope curing molding and handle, and carry out the air gap cutting then, make cutting amorphous inductive magnetic core.Its saturated magnetic strength Bs is 1.45T, is the magnetic core of 40A/cm for the magnetic conduction field Hmax of Daheng, and average direct current permeability is 240, and loss P2/20K is 4W/kg, and good frequency characteristic is arranged, and operating frequency is 1KH
2～200KH
2By width of air gap control the magnetic conduction field Hmax of Daheng is changed in 10～80A/cm scope.Can make volume reduce 50～75% with alternative ferrite of this magnetic core and magnetic core.
Description
The invention belongs to soft magnetic amorphous material and magnetic core manufacture craft thereof.
In the past, as the wide permanent magnetic conduction magnetic core of High frequency filter and energy storage device, used ferrite, magnetic core and the perm constant permeable alloy of band air gap usually.Since the saturated magnetic strength Bs of ferrite low (＜0.5T), it is the same with the magnetic core, its linear permeability is less, for example the permeability of FeSiAl powder core only is 75.6 * 10
-6H/M(60Gs/Oe), under the condition of same electrical parameter, the volume weight of this powder core and FERRITE CORE is bigger, and high-frequency loss is higher, has shortcomings such as the work temperature rise is big.
On the other hand, the domestic wide permanent magnetic conduction permalloy magnetic core of common employing in some important electronic equipments at present, the trade mark is 1J34KH and 1J50H, its Daheng magnetic conduction magnetic field is respectively 16 and 80A/cm, but the perseverance of between is led material and is still belonged to blank, and the Daheng magnetic conduction field that universal demand is suitable in the electronic installation now is about 40A/cm.The major defect that the perm perseverance is led alloy is that resistivity is little, and high-frequency loss is bigger, is only applicable to use under the operating frequency condition less than 20KHz.
1985, Toshiba Corp succeeded in developing amorphous smoothing choke magnetic core first, and the magnetic conduction field Hm of Daheng of its product is 40A/cm, the saturated magnetic strength B of magnetic core
100Be 1.2T, linear permeability is 200 * 10
-6H/M(157Gs/Oe).
Along with electronic device in the rapid progress aspect high frequencyization and the miniaturization and, magnetic core as some inductance components, for example, differential mode noise filter in the Switching Power Supply, the smothing filtering choke, resonant inductance and energy storage inductance etc. require that core material has that wide perseverance is led, high magnetic conduction and low high-frequency loss, purpose of the present invention that Here it is.
The present invention uses iron-based non-crystalline alloy as core material, adopt to solidify patterning method, has made the various amorphous inductance cores of Daheng magnetic conduction field by 16 to 80A/cm variable ranges, the saturated magnetic strength B of magnetic core
100Being 1.45T, is the inferior magnetic core of 40A/cm retaining for Hm, and its linear permeability is 275 * 10
-6H/M.(220Gs/Oe) coercivity H is less than 0.12A/cm, core loss under the condition of 0.05T magnetic strength and 20KHz frequency is 3.0W/kg, and the magnetic core product of this development is specially adapted to the device that the filtering of working under 5KHz～250KHz frequency and energy storage inductance and other requirement have linear magnetic.
Alloy component range of the present invention is (at%)
Si：3.5～12
B：12～16
C：0～2.0
Me（Me＝Ni、Mo、Cr）0～4
Fe: surplus
Interpolation alloying element Me can improve the permeability and the high frequency characteristics of material, and Si and B element are used as the amorphous forming element.
The employing single-roller method is made the amorphous band of Rack, scratches to circularize or the rectangle magnetic core, carries out annealing in process subsequently under the protection of nitrogen or argon gas.
The annealing process that the present invention adopts is 420～440 ℃, be incubated 0.5～2 hour, be cooled to room temperature then under greater than 40 ℃/minute speed, also can adopt horizontal magnetic anneal method in addition, horizontal magnetic external magnetic field intensity should be greater than 300A/cm, its annealing process is same as described above, because the non-crystalline material fragility after the annealing is bigger, and interlayer do not have bonding, should not directly carry out the air gap cutting, main feature of the present invention is to adopt epoxy resin envelope magnetic core, makes it curing molding.At first carry out the preparation of resin by following proportioning:
Kind allocation ratio (weight)
Epoxy resin 100
Curing agent 8～16
Increase sword agent 5～30
Filler 30～50
Magnetic core put into gives resin that the mould neutrality that is heated to 40～60 ℃ of temperature earlier is about to mix up and inject space between mould and the magnetic core, put into dryer after the injection and be cured processing, its curing process be 150 ℃ three hours.
Magnetic core after solidifying needs for annular or rectangle magnetic core, can make single air gap in the cutting of the enterprising promoting the circulation of qi of cutting machine crack, also can make two air gaps.
The width of cutting air gap needs to be determined that according to the numerical value of permanent magnetic conduction field width degree and the length of magnetic path of magnetic core the width of air gap size range of its single air gap is 0.4mm～3.0mm.
The inductance core of making as stated above has good comprehensive magnetic characteristic, promptly high saturated magnetic strength value, good alternating current-direct current superimposed characteristics and low high-frequency loss value.Fig. 1 shows the typical static magnetic hysteresis loop that the magnetic conduction field Hm of Daheng is a 40A/cm retaining time magnetic core, and its saturated magnetic strength Bm is the linear permeability 300 * 10 of 1.46T direct current
-6H/M(240Gs/Oe).
Fig. 2 shows that the longitudinal axis is the relative change rate of magnetic core inductance value in the typical alternating current-direct current superimposed characteristics curve chart, and transverse axis is the D.C. magnetic biasing number of ampere turns, and magnetic core is of a size of internal diameter 16mm, external diameter 26mm, height 10mm, the wide 0.6mm of air gap.According to the instructions for use difference, adopt different cutting air gaps that the magnetic conduction field Hmax of Daheng of magnetic core of the present invention is controlled in the scope of 10～80A/cm and change.
Because inductance amorphous magnetic core of the present invention has high saturated magnetic strength and high permeability, wide permanent magnetic conduction and good high frequency characteristics, under same electrical parameter condition of work, the comparable ferrite of the volume of this magnetic core reduces 60～70%, reduce 50～60% than magnetic core, reduced the temperature rise of magnetic core simultaneously.This magnetic core only is 1/4th of the horizontal magnetic conduction core of 1J50H perm at the core loss of 20KHz, is 1/2nd of 1J34KH magnetic core.
Embodiment 1
Smelt mother metal with vacuum furnace, its chemical analysis is Fe
77Si
7B
13C
2(at%); make the wide amorphous band of 15mm with single-roller method; volume is scratched into Φ 40/64 * 15 toroidal core; after the argon shield annealing furnace of 430 ℃ of 1hr is cold; adopt above-mentioned method to carry out epoxy perfusion and curing, cut into the wide air gap of 2.5mm then, its final magnetic is; Bs=1.45T, direct current permeability 250～300 * 10
-6The P0.5/20K(Bm=0.05T of H/M(200～240Gs/Oe), f=20KHz)=3.2～4.8W/kg, Daheng magnetic conduction field is 40A/cm.
Embodiment 2
Use vacuum furnace to smelt mother metal, its chemical composition is Fe
77Mo
2Si
5B
16(at%), the magnetic core with the single-roller method system roll coil of strip is scratched into Φ 25/32 * 5 behind the horizontal magnetic anneal of 430 ℃ * 1hr, is cured as stated above, cuts the wide air gap of 0.5mm then.
The final magnetic that obtains is Bs=1.4T, and the direct current magnetic permeability mu is 685 * 10
-6H/M(540Gs/Oe) the D.C. magnetic biasing of 16A/cm after the match the interchange permeability of 1KHz be 610 * 10
-6H/M(490Gs/Oe), the core loss at Bm=0.05T, f=20KHz is 2.51W/kg.
Claims (5)
1, amorphous soft magnetic material and magnetic core method for making thereof is characterized in that chemical analysis scope (weight %) is: Si3.5～12.0%, B12.0～16.0%; C0～2.0%; Me (Me=Ni, Mo, Cr) 0～4.0%, Fe surplus, the mother metal of use vacuum metling; make the amorphous band of Rack with single-roller method; coiled annular or rectangle magnetic core carry out annealing in process then under the protection of nitrogen or argon gas, adopt epoxy resin envelope magnetic core afterwards; through the cured moulding, carry out the air gap cutting at last.
2, method for making according to claim 1 is characterized in that annealing treating process is no transverse magnetic field effect or the transverse magnetic field effect is arranged, and 420～440 ℃ of heating-up temperatures are incubated 0.5～2 hour, are cooled to room temperature then under greater than 40 ℃/minute speed.
3, magnetic core method for making according to claim 1, it is characterized in that the proportioning (weight) of epoxy resin is: epoxy resin 100, curing agent 8～16 increases sword agent 5～30, filler 30～50.
4, magnetic core method for making according to claim 1, it is characterized in that curing process be 150 ℃ 3 hours.
5, magnetic core method for making according to claim 1 is characterized in that the width of air gap scope of magnetic core cutting is 0.4mm～3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106983 CN1020216C (en) | 1989-09-03 | 1989-09-03 | Making method of cutting amorphous inductive magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89106983 CN1020216C (en) | 1989-09-03 | 1989-09-03 | Making method of cutting amorphous inductive magnetic core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1050108A true CN1050108A (en) | 1991-03-20 |
| CN1020216C CN1020216C (en) | 1993-03-31 |
Family
ID=4857003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89106983 Expired - Fee Related CN1020216C (en) | 1989-09-03 | 1989-09-03 | Making method of cutting amorphous inductive magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1020216C (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048576C (en) * | 1991-03-04 | 2000-01-19 | 日本电介质电容器株式会社 | Method of manufacturing and appolying heat treatment to magnetic core |
| CN100432266C (en) * | 2005-11-01 | 2008-11-12 | 王青松 | Amorphous/amorphous nano structured alloy |
| CN100490028C (en) * | 2005-12-07 | 2009-05-20 | 安泰科技股份有限公司 | Block-shaped soft magnetic alloy lamination element and its manufacturing method |
| CN101369771B (en) * | 2007-08-17 | 2011-12-14 | 力博特公司 | ARCP soft switch circuit |
| CN102426912A (en) * | 2011-12-01 | 2012-04-25 | 安徽迪维乐普非晶器材有限公司 | Process for producing transformer iron core |
| CN102509603A (en) * | 2011-12-31 | 2012-06-20 | 青岛云路新能源科技有限公司 | Iron-based amorphous state soft magnetic material and preparation method thereof |
| CN103151133A (en) * | 2013-03-18 | 2013-06-12 | 合肥工业大学 | Preparation technology of high-performance amorphous nickel-based anti-theft iron core |
| CN104200982A (en) * | 2014-03-28 | 2014-12-10 | 北京冶科磁性材料有限公司 | Manufacturing method of nanocrystalline magnetic core for high-frequency electrostatic dust collection power transformer |
| CN105788825A (en) * | 2016-05-17 | 2016-07-20 | 江阴市晶磁电子有限公司 | Impregnation solidification type amorphous iron core and preparation method thereof |
| CN110160693A (en) * | 2019-07-08 | 2019-08-23 | 无锡集磁科技有限公司 | The measuring method of orientation silicon steel magnetic core resin solidification stress |
| CN112281060A (en) * | 2020-10-21 | 2021-01-29 | 江苏大磁纳米材料有限公司 | Tube sealing hydrogenation heat treatment annealing process |
| CN115036125A (en) * | 2022-06-27 | 2022-09-09 | 中国科学院空间应用工程与技术中心 | Nanocrystalline magnetic core and preparation method thereof and magnetic equipment |
-
1989
- 1989-09-03 CN CN 89106983 patent/CN1020216C/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048576C (en) * | 1991-03-04 | 2000-01-19 | 日本电介质电容器株式会社 | Method of manufacturing and appolying heat treatment to magnetic core |
| CN100432266C (en) * | 2005-11-01 | 2008-11-12 | 王青松 | Amorphous/amorphous nano structured alloy |
| CN100490028C (en) * | 2005-12-07 | 2009-05-20 | 安泰科技股份有限公司 | Block-shaped soft magnetic alloy lamination element and its manufacturing method |
| CN101369771B (en) * | 2007-08-17 | 2011-12-14 | 力博特公司 | ARCP soft switch circuit |
| CN102426912A (en) * | 2011-12-01 | 2012-04-25 | 安徽迪维乐普非晶器材有限公司 | Process for producing transformer iron core |
| CN102509603B (en) * | 2011-12-31 | 2015-10-07 | 青岛云路新能源科技有限公司 | Iron-based amorphous state soft magnetic material and preparation method thereof |
| CN102509603A (en) * | 2011-12-31 | 2012-06-20 | 青岛云路新能源科技有限公司 | Iron-based amorphous state soft magnetic material and preparation method thereof |
| CN103151133A (en) * | 2013-03-18 | 2013-06-12 | 合肥工业大学 | Preparation technology of high-performance amorphous nickel-based anti-theft iron core |
| CN103151133B (en) * | 2013-03-18 | 2015-05-06 | 合肥工业大学 | Preparation technology of high-performance amorphous nickel-based anti-theft iron core |
| CN104200982A (en) * | 2014-03-28 | 2014-12-10 | 北京冶科磁性材料有限公司 | Manufacturing method of nanocrystalline magnetic core for high-frequency electrostatic dust collection power transformer |
| CN105788825A (en) * | 2016-05-17 | 2016-07-20 | 江阴市晶磁电子有限公司 | Impregnation solidification type amorphous iron core and preparation method thereof |
| CN110160693A (en) * | 2019-07-08 | 2019-08-23 | 无锡集磁科技有限公司 | The measuring method of orientation silicon steel magnetic core resin solidification stress |
| CN112281060A (en) * | 2020-10-21 | 2021-01-29 | 江苏大磁纳米材料有限公司 | Tube sealing hydrogenation heat treatment annealing process |
| CN112281060B (en) * | 2020-10-21 | 2022-07-01 | 江苏大磁纳米材料有限公司 | Tube sealing hydrogenation heat treatment annealing process |
| CN115036125A (en) * | 2022-06-27 | 2022-09-09 | 中国科学院空间应用工程与技术中心 | Nanocrystalline magnetic core and preparation method thereof and magnetic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1020216C (en) | 1993-03-31 |
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