CN101871071A - Manufacturing method of soft magnet silicon-aluminum alloy magnetic powder core with small amounts of rare earth element cerium or lanthanum - Google Patents
Manufacturing method of soft magnet silicon-aluminum alloy magnetic powder core with small amounts of rare earth element cerium or lanthanum Download PDFInfo
- Publication number
- CN101871071A CN101871071A CN 201010209014 CN201010209014A CN101871071A CN 101871071 A CN101871071 A CN 101871071A CN 201010209014 CN201010209014 CN 201010209014 CN 201010209014 A CN201010209014 A CN 201010209014A CN 101871071 A CN101871071 A CN 101871071A
- Authority
- CN
- China
- Prior art keywords
- lanthanum
- alloy
- earth element
- cerium
- fesial
- 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
Abstract
The invention discloses a manufacturing method of a soft magnet silicon-aluminum alloy magnetic powder core with small amounts of rare earth element cerium or lanthanum, which comprises the following steps: 1) smelting industrial pure iron, polycrystalline silicon, pure aluminum, cerium-iron alloy or lanthanum-iron alloy in a vacuum induction furnace into FeSiAl alloy cast ingots with small amounts of cerium or lanthanum, wherein the alloy cast ingots comprise the components of 9.0-9.8% of Si, 5.4-6.0% of Al, 0.02-0.25% of Ce or La, 0.006-0.015% of C, 0.008-0.010% of O2, 0.008-0.028% of S, 0.03-0.035% of P and balance of Fe; and mechanically crushing into FeSiAl alloy powder, carrying out high-heat treatment in a shielding gas atmosphere, and then screening; 2) carrying out surface passivation treatment on the FeSiAl alloy powder with phosphoric acid and alcohol, then adding 0.20% of kaolin, 0.20% of lubricant and 0.50% of parting compound, uniformly mixing, and carrying out pressure forming; and 3) carrying out heat treatment and surface spraying. The invention can increase the resistivity of the magnetic core and reduce the high-frequency eddy current loss, and has lower magnetic core loss. Besides, the invention improves the temperature stability of the magnetic permeability, and enables the decline of the magnetic permeability to be less than 3% when the working temperature rises to 125 DEG C.
Description
Technical field
The present invention relates to the making method of magnetic bodies, relate in particular to a kind of making method of adding the soft magnet silumin magnetic core of a small amount of rare-earth element cerium or lanthanum.This magnetic core use range is very extensive, mainly is applicable in PFC inductance and output inductor among LED power supply, switch power supply and the UPS, the electromagnetic interface filter main-transformer and other pulse transformer etc. in differential mode inductance, the anti exciting converter.
Background technology
Iron silicon aluminum alloy has good soft magnetic property, as far back as last century the '30s just found by the Japanese, particularly special component Si～9.6%, Al～5.4%, surplus is the alloy of Fe, μ m value can reach 160,000, is named as the Sendust alloy.For no other reason than that silicon, aluminium are easy to generate segregation and scaling loss and are not widely used when smelting.Last century, the nineties was because the progress of smelting technology and the growth requirement of electronic industry have promoted the development of iron silicon aluminum alloy magnetic core.Japanese subsequently gold show husband adds neodymium (Nd) in the Sendust alloy, improved its processibility, magnetic (μ
0, μ
m, Hc, Bs), wear resistance all do not reduce.The investigator's addition element that has (Sn, Be, Ti, V, Y, B, Mo, W, Cr etc.) back alloy rigidity has improved, and the wear resistance that has has improved.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, a kind of making method of adding the soft magnet silumin magnetic core of a small amount of rare-earth element cerium or lanthanum is provided.
The making method of adding the soft magnet silumin magnetic core of a small amount of rare-earth element cerium or lanthanum comprises the steps:
1) will smelt in technically pure iron, polysilicon, fine aluminium, cerium-iron alloy or the lanthanum iron alloy input vacuum induction furnace, be smelted into the FeSiAl alloy cast ingot that contains a small amount of rare-earth element cerium or lanthanum, the mass percentage content that its alloy cast ingot is formed is: Si 9.0～9.8%, Al 5.4～6.0%, Ce or La 0.02～0.25%, C 0.006～0.015%, O
20.008～0.010%, S 0.008～0.028%, P 0.03～0.035%, all the other are Fe.
2) alloy cast ingot is become the FeSiAl powdered alloy with Mechanical Crushing; after the protective atmosphere high-temperature heat treatment, sieve; make the mass percentage content of FeSiAl powdered alloy size composition be :-100～+ 140 orders account for 5%;-140～+ 200 orders account for 15%;-200～+ 300 orders account for 45%, and-300 orders account for 35%.
3) after above-mentioned FeSiAl powdered alloy carries out the surface passivation processing with the phosphoric acid spirituous solution, add 0.2% kaolin again, 0.2% lubricant, 0.5% releasing agent mixes; Use the dry powder automatic forming hydraulic press compression molding, pressure is 22～25T/cm
2, compacting is shaped as annular.
4) press-formed product thermal treatment under nitrogen protection, thermal treatment temp is: 640～690 ℃, at last with the soft magnet silumin magnetic core that obtains adding a small amount of rare-earth element cerium or lanthanum after the spraying of Resins, epoxy paint.
Described releasing agent is Zinic stearas or barium stearate.Described lubricant is a moly-sulfide.The present invention compared with prior art has following beneficial effect:
1) improved the specific resistance of iron silicon aluminum alloy magnetic core,, made the specific resistance of alloy can reach 82-85x10 owing to add a small amount of rare-earth element cerium or lanthanum in the alloy
-6Ω m;
2) reduced the power loss of Fe-Si-Al magnetic core, the iron silicon aluminum alloy magnetic core made from this alloy is 125 ± 5 at magnetic permeability, frequency is that 50KHz, magnetic induction density are that power loss unshakable in one's determination under the 500Gs condition can be reduced to 70mw/cm
3Below;
3) improved the temperature stability of magnetic core magnetic permeability, making magnetic permeability with this alloy is 125 Fe-Si-Al magnetic core, and the temperature stability of its magnetic permeability is strong, and the fall of magnetic permeability was less than 3% when working temperature rose to 125 ℃.
Embodiment
Embodiment 1:
1) iron silicon aluminum alloy is smelted the vacuum medium frequency induction furnace of selecting nominal 100Kg for use, earlier technically pure iron is melted, successively polysilicon, fine aluminium, cerium-iron alloy are dropped in the vacuum induction furnace then and smelt, adopt induction stirring to be smelted into the FeSiAl alloy cast ingot, the mass percentage content that its FeSiAl alloy cast ingot is formed is: Si9%, and Al 6.0%, and Ce 0.02%, C 0.015%, O
20.010%, S 0.008%, and P 0.035%, and surplus is Fe.
2) alloy cast ingot is become the FeSiAl powdered alloy with Mechanical Crushing; after the protective atmosphere high-temperature heat treatment, sieve; make the mass percentage content of FeSiAl powdered alloy size composition be :-100～+ 140 orders account for 5%;-140～+ 200 orders account for 15%;-200～+ 300 orders account for 45%, and-300 orders account for 35%.
3) powder being carried out surface passivation handles, extract above-mentioned FeSiAl powdered alloy 1000g, pour with 5g phosphoric acid again that proportioning becomes the phosphoric acid spirituous solution in the 80g alcohol into, the phosphoric acid spirituous solution is poured into to stir in the FeSiAl powdered alloy of this 1000g makes its drying, and then add kaolin 2g, moly-sulfide 2g, Zinic stearas 5g mix; Use the dry powder automatic forming hydraulic press compression molding, pressure is 22T/cm
2, compacting annular size: external diameter Φ 26.90mm, internal diameter Φ 14.70mm, height 11.20mm.；
4) press-formed product is in nitrogen protection thermal treatment, and thermal treatment temp is: 670 ℃, and at last with the soft magnet silumin magnetic core that obtains adding a small amount of rare-earth element cerium after the spraying of Resins, epoxy paint.The resistance alloys coefficient reaches 82.5 * 10
-6Ω m.Sample detects and adopts coiling telefault enameled wire Φ 0.5mm, 26 circles.Its magnetic parameter such as table 1.
Table 1
The corresponding inductance coefficent 159nH/N of inductance value 107.5 μ H
2, meet magnetic permeability 125.
Magnetic permeability varies with temperature as table 2:
Table 2
Embodiment 2:
Making method is with embodiment 1, and alloy composition is Si 9.56%, and Al 5.4%, and Ce 0.125%, C0.012%, O
20.010%, S 0.025%, and P 0.032%, and surplus is Fe, compacting pressure 23T/cm
2, 690 ℃ of thermal treatment temps.
The resistance alloys coefficient is 83.8 * 10
-6Ω m.
The magnetic parameter such as the table 3 of embodiment 2 goods.
Compacting annular size: external diameter Φ 16.50mm, internal diameter Φ 10.15mm, height 6.35mm.Coiling telefault enameled wire Φ 0.5mm, 17 circles.
Table 3
The corresponding inductance coefficent 74nH/N of inductance value 21.4 μ H
2Meet magnetic permeability 125.
Magnetic permeability varies with temperature rate such as table 4
Table 4
Embodiment 3:
Making method is with embodiment 1, and chemical ingredients is Si 9.80%, and Al 5.62%, and Ce 0.250%, and C 0.008%, O
20.008%, S 0.028%, and P 0.030%, and surplus is Fe, compacting pressure 25T/cm
2, 640 ℃ of thermal treatment temps
The resistance alloys coefficient is 85.2 * 10
-6Ω m.
The magnetic parameter such as the table 5 of magnetic core goods
Compacting size: external diameter Φ 33.0mm, internal diameter Φ 19.95mm, height 11.20mm.Coiling telefault enameled wire Φ 0.5mm, 33 circles.
Table 5
The corresponding inductance coefficent 137nH/N of inductance value 149.2 μ H
2Corresponding magnetic permeability 125.
Magnetic permeability varies with temperature rate such as table 6
Table 6
Embodiment 4:
Making method is with embodiment 1, and main chemical compositions such as table 7, remainder are Fe (being mass percent).
Table 7
Suppress annular size with embodiment 1, resistance alloys coefficient such as table 7.
The magnetic parameter such as the table 8 of magnetic core goods
Table 8
DC Bias 20 Oe, 100KHz, all greater than 74%, on show the corresponding magnetic permeability 125 ± 5% of inductance value
Magnetic permeability varies with temperature as table 9
Table 9
Claims (3)
1. a making method of adding the soft magnet silumin magnetic core of a small amount of rare-earth element cerium or lanthanum is characterized in that comprising the steps:
1) will smelt in technically pure iron, polysilicon, fine aluminium, cerium-iron alloy or the lanthanum iron alloy input vacuum induction furnace, be smelted into the FeSiAl alloy cast ingot that contains a small amount of rare-earth element cerium or lanthanum, the mass percentage content that its alloy cast ingot is formed is: Si 9.0～9.8%, Al 5.4～6.0%, Ce or La 0.02～0.25%, C 0.006～0.015%, O
20.008～0.010%, S 0.008～0.028%, P 0.03～0.035%, all the other are Fe.
2) alloy cast ingot is become the FeSiAl powdered alloy with Mechanical Crushing; after the protective atmosphere high-temperature heat treatment, sieve; make the mass percentage content of FeSiAl powdered alloy size composition be :-100～+ 140 orders account for 5%;-140～+ 200 orders account for 15%;-200～+ 300 orders account for 45%, and-300 orders account for 35%.
3) after above-mentioned FeSiAl powdered alloy carries out the surface passivation processing with the phosphoric acid spirituous solution, add 0.2% kaolin again, 0.2% lubricant, 0.5% releasing agent mixes; Use the dry powder automatic forming hydraulic press compression molding, pressure is 22～25T/cm
2, compacting is shaped as annular.
4) press-formed product thermal treatment under nitrogen protection, thermal treatment temp is: 640～690 ℃, at last with the soft magnet silumin magnetic core that obtains adding a small amount of rare-earth element cerium or lanthanum after the spraying of Resins, epoxy paint.
2. a kind of making method of adding the soft magnet silumin magnetic core of a small amount of rare-earth element cerium or lanthanum according to claim 1 is characterized in that described releasing agent is Zinic stearas or barium stearate.
3. a kind of making method of adding the soft magnet silumin magnetic core of a small amount of rare-earth element cerium or lanthanum according to claim 1 is characterized in that described lubricant is a moly-sulfide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102090146A CN101871071B (en) | 2010-06-24 | 2010-06-24 | Manufacturing method of soft magnet silicon-aluminum alloy magnetic powder core with small amounts of rare earth element cerium or lanthanum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102090146A CN101871071B (en) | 2010-06-24 | 2010-06-24 | Manufacturing method of soft magnet silicon-aluminum alloy magnetic powder core with small amounts of rare earth element cerium or lanthanum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101871071A true CN101871071A (en) | 2010-10-27 |
| CN101871071B CN101871071B (en) | 2011-09-14 |
Family
ID=42996150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102090146A Expired - Fee Related CN101871071B (en) | 2010-06-24 | 2010-06-24 | Manufacturing method of soft magnet silicon-aluminum alloy magnetic powder core with small amounts of rare earth element cerium or lanthanum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101871071B (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019422A (en) * | 2010-12-20 | 2011-04-20 | 惠州市科力磁元有限公司 | Method for manufacturing soft magnet silicon-aluminum alloy magnetic powder core mu e 60 |
| CN102268605A (en) * | 2011-08-11 | 2011-12-07 | 广东省钢铁研究所 | Iron silicon soft magnetic alloy and method for preparing powder 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 |
| 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 |
| CN102744403A (en) * | 2012-06-19 | 2012-10-24 | 同济大学 | Preparation method of nanocrystalline magnetic powder cores |
| CN103310936A (en) * | 2013-07-05 | 2013-09-18 | 浙江大学 | Low-loss Fe-based nanocrystalline soft magnetic powder core and manufacturing method thereof |
| CN103310937A (en) * | 2013-07-05 | 2013-09-18 | 浙江大学 | High-saturation magnetic induction density iron cobalt-based nanocrystal soft magnetic powder core and preparation method thereof |
| CN103456479A (en) * | 2013-03-24 | 2013-12-18 | 广州市德珑电子器件有限公司 | Method for manufacturing high-temperature-resistant metal soft magnetic powder core |
| CN103551565A (en) * | 2013-10-30 | 2014-02-05 | 武汉欣达磁性材料有限公司 | Manufacturing method for soft-magnetic Fe-Si-Al-Ni alloy powder |
| CN103578736A (en) * | 2013-10-28 | 2014-02-12 | 任静儿 | Soft-magnetic inductive iron core manufacturing method |
| CN104439234A (en) * | 2014-12-20 | 2015-03-25 | 陈红 | Preparing method for nickel-silicon-aluminum soft magnetic material doped with rare earth elements |
| CN104981884A (en) * | 2013-01-24 | 2015-10-14 | 阿莫绿色技术有限公司 | Method for manufacturing Fe-based amorphous metal powder and method for manufacturing amorphous soft magnetic cores using same |
| CN105014065A (en) * | 2015-08-12 | 2015-11-04 | 湖州南浔闻天磁性材料有限公司 | Fe-Si-Al soft magnetic powder |
| CN107633931A (en) * | 2017-09-15 | 2018-01-26 | 安徽信息工程学院 | A kind of alloy for magnetic composite and preparation method thereof |
| CN107644722A (en) * | 2017-09-15 | 2018-01-30 | 安徽信息工程学院 | A kind of alloy for permanent-magnet material and preparation method thereof |
| CN108172358A (en) * | 2017-12-19 | 2018-06-15 | 浙江大学 | A kind of low-power consumption metal soft magnetic composite material and preparation method thereof |
| CN112233870A (en) * | 2020-10-26 | 2021-01-15 | 江苏智仁景行新材料研究院有限公司 | Nanoscale Fe-Si-Al soft magnetic alloy powder and preparation method thereof |
| WO2023071226A1 (en) * | 2021-10-26 | 2023-05-04 | 横店集团东磁股份有限公司 | Rare earth ion doped soft magnetic alloy, soft magnetic composite material and preparation method therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0974011A (en) * | 1995-09-07 | 1997-03-18 | Tdk Corp | Dust core and manufacture thereof |
| CN1622236A (en) * | 2004-12-14 | 2005-06-01 | 王�锋 | Method for manufacturing soft magnet silicon-aluminium magnetic powder core |
| CN101090019A (en) * | 2007-04-26 | 2007-12-19 | 王忠强 | Manufacturing method of high magnetoconductivity FcSiAl magnetic powder core |
-
2010
- 2010-06-24 CN CN2010102090146A patent/CN101871071B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0974011A (en) * | 1995-09-07 | 1997-03-18 | Tdk Corp | Dust core and manufacture thereof |
| CN1622236A (en) * | 2004-12-14 | 2005-06-01 | 王�锋 | Method for manufacturing soft magnet silicon-aluminium magnetic powder core |
| CN101090019A (en) * | 2007-04-26 | 2007-12-19 | 王忠强 | Manufacturing method of high magnetoconductivity FcSiAl magnetic powder core |
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102019422A (en) * | 2010-12-20 | 2011-04-20 | 惠州市科力磁元有限公司 | Method for manufacturing soft magnet silicon-aluminum alloy magnetic powder core mu e 60 |
| 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 |
| 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 |
| CN102268605A (en) * | 2011-08-11 | 2011-12-07 | 广东省钢铁研究所 | Iron silicon soft magnetic alloy and method for preparing powder thereof |
| CN102268605B (en) * | 2011-08-11 | 2013-10-16 | 广东省钢铁研究所 | Method for preparing iron silicon soft magnetic alloy |
| CN102744403A (en) * | 2012-06-19 | 2012-10-24 | 同济大学 | Preparation method of nanocrystalline magnetic powder cores |
| CN104981884A (en) * | 2013-01-24 | 2015-10-14 | 阿莫绿色技术有限公司 | Method for manufacturing Fe-based amorphous metal powder and method for manufacturing amorphous soft magnetic cores using same |
| CN103456479A (en) * | 2013-03-24 | 2013-12-18 | 广州市德珑电子器件有限公司 | Method for manufacturing high-temperature-resistant metal soft magnetic powder core |
| CN103310937A (en) * | 2013-07-05 | 2013-09-18 | 浙江大学 | High-saturation magnetic induction density iron cobalt-based nanocrystal soft magnetic powder core and preparation method thereof |
| CN103310936A (en) * | 2013-07-05 | 2013-09-18 | 浙江大学 | Low-loss Fe-based nanocrystalline soft magnetic powder core and manufacturing method thereof |
| CN103310936B (en) * | 2013-07-05 | 2016-01-13 | 浙江大学 | A kind of low-loss Fe base nanometer crystal powder core and preparation method thereof |
| CN103310937B (en) * | 2013-07-05 | 2016-01-13 | 浙江大学 | A kind of high saturated magnetic induction iron cobalt-based nano-crystal soft-magnetic powder core and preparation method thereof |
| CN103578736A (en) * | 2013-10-28 | 2014-02-12 | 任静儿 | Soft-magnetic inductive iron core manufacturing method |
| CN103551565B (en) * | 2013-10-30 | 2016-08-17 | 武汉欣达磁性材料有限公司 | The manufacture method of soft magnet silicon, aluminum and nickel alloy powder |
| CN103551565A (en) * | 2013-10-30 | 2014-02-05 | 武汉欣达磁性材料有限公司 | Manufacturing method for soft-magnetic Fe-Si-Al-Ni alloy powder |
| CN104439234A (en) * | 2014-12-20 | 2015-03-25 | 陈红 | Preparing method for nickel-silicon-aluminum soft magnetic material doped with rare earth elements |
| CN105014065B (en) * | 2015-08-12 | 2017-11-10 | 湖州南浔闻天磁性材料有限公司 | A kind of iron-silicon-aluminum soft magnetic powder |
| CN105014065A (en) * | 2015-08-12 | 2015-11-04 | 湖州南浔闻天磁性材料有限公司 | Fe-Si-Al soft magnetic powder |
| CN107633931A (en) * | 2017-09-15 | 2018-01-26 | 安徽信息工程学院 | A kind of alloy for magnetic composite and preparation method thereof |
| CN107644722A (en) * | 2017-09-15 | 2018-01-30 | 安徽信息工程学院 | A kind of alloy for permanent-magnet material and preparation method thereof |
| CN108172358A (en) * | 2017-12-19 | 2018-06-15 | 浙江大学 | A kind of low-power consumption metal soft magnetic composite material and preparation method thereof |
| CN108172358B (en) * | 2017-12-19 | 2019-06-04 | 浙江大学 | A kind of low-power consumption metal soft magnetic composite material and preparation method thereof |
| CN112233870A (en) * | 2020-10-26 | 2021-01-15 | 江苏智仁景行新材料研究院有限公司 | Nanoscale Fe-Si-Al soft magnetic alloy powder and preparation method thereof |
| WO2023071226A1 (en) * | 2021-10-26 | 2023-05-04 | 横店集团东磁股份有限公司 | Rare earth ion doped soft magnetic alloy, soft magnetic composite material and preparation method therefor |
| EP4195225A4 (en) * | 2021-10-26 | 2024-01-31 | Hengdian Group Dmegc Magnetics Co Ltd | Rare earth ion doped soft magnetic alloy, soft magnetic composite material and preparation method therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101871071B (en) | 2011-09-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101871071B (en) | Manufacturing method of soft magnet silicon-aluminum alloy magnetic powder core with small amounts of rare earth element cerium or lanthanum | |
| CN100486738C (en) | Manufacturing method of Fe-6.5Si alloy powder and manufacturing method of magnetic powder core | |
| CN101886216A (en) | Preparation method of Fe-6.5% Si alloy magnetic powder core with small amount of P | |
| CN104575913B (en) | Preparation method of low-loss amorphous magnetic powder core | |
| CN110306130B (en) | Fe-Si-B-P-Cu-Nb amorphous nanocrystalline magnetically soft alloy with high iron content and preparation method thereof | |
| CN103646742B (en) | A kind of neodymium iron boron magnetic body and preparation method thereof | |
| JP5170975B2 (en) | Manufacturing method of iron-based amorphous material | |
| CN102808140A (en) | High saturation induction density iron-based nanocrystalline magnetically soft alloy material and preparation method thereof | |
| CN107146675A (en) | A kind of high-frequency low-consumption ferrous alloy magnetic and its manufacture method | |
| JP5439888B2 (en) | Composite magnetic material and method for producing the same | |
| CN110534282A (en) | High magnetic permeability sendust powder preparation method | |
| CN109604615A (en) | The method that low cost prepares sintered Nd-Fe-B permanent magnet | |
| CN110473682B (en) | Neodymium-iron-boron magnet and preparation process thereof | |
| CN101090019A (en) | Manufacturing method of high magnetoconductivity FcSiAl magnetic powder core | |
| CN102360702A (en) | Simple and convenient functional magnetic material block and preparation method thereof | |
| CN102605226A (en) | Aluminum alloy material and method for manufacturing same | |
| JP2009147252A (en) | Compound magnetic material and method of manufacturing thereof | |
| CN103266260B (en) | The manufacture method of soft-magnetic Fe ~ 6.5%Si powdered alloy | |
| CN103551565B (en) | The manufacture method of soft magnet silicon, aluminum and nickel alloy powder | |
| CN102982989B (en) | Manufacturing method for ferrum-silicon-aluminum magnetic cores | |
| JP4106966B2 (en) | Composite magnetic material and manufacturing method thereof | |
| CN108950434B (en) | Iron-based amorphous strip with low excitation power and preparation method thereof | |
| JP3432905B2 (en) | Method for producing sendust-based sintered alloy | |
| CN102982990B (en) | Manufacturing method for ferrum-silicon-aluminum magnetic cores | |
| JPH08120393A (en) | Production of iron-silicon soft magnetic sintered alloy |
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 | ||
| ASS | Succession or assignment of patent right |
Owner name: HUIZHOU KELI MAGNETIC CO., LTD. Free format text: FORMER OWNER: HUZHOU MICRO-CONTROL ELECTRONIC CO., LTD. Effective date: 20130812 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 313216 HUZHOU, ZHEJIANG PROVINCE TO: 516127 HUIZHOU, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130812 Address after: 516127, science and Technology Industrial Park, Shiwan Town, Huizhou County, Guangdong, Boluo, 8 Patentee after: Huizhou Keli Magnetics Co., Ltd. Address before: 313216, Zhenxing Road, No. 18, Zhong tube Town, Zhejiang, Deqing County Patentee before: Huzhou Weikong Electronic Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110914 Termination date: 20140624 |
|
| EXPY | Termination of patent right or utility model |