CN108231393A - A kind of preparation method of high magnetic permeability iron nickel magnetic core - Google Patents
A kind of preparation method of high magnetic permeability iron nickel magnetic core Download PDFInfo
- Publication number
- CN108231393A CN108231393A CN201711328854.2A CN201711328854A CN108231393A CN 108231393 A CN108231393 A CN 108231393A CN 201711328854 A CN201711328854 A CN 201711328854A CN 108231393 A CN108231393 A CN 108231393A
- Authority
- CN
- China
- Prior art keywords
- iron nickel
- powder
- magnetic core
- preparation
- iron
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Soft Magnetic Materials (AREA)
Abstract
The present invention relates to technical field of magnetic materials more particularly to a kind of preparation methods of high magnetic permeability iron nickel magnetic core, include the following steps：(1) iron nickel by powder is made using non-real air atomizing mode in iron-nickel alloy；(2) combinations of particle sizes；(3) primary insulation coats；(4) it makes annealing treatment；(5) secondary insulating coats；(6) it is pressed into iron nickel magnetic core；(7) annealing heat-treats；(8) epoxy resin coating sprays, and obtains high magnetic permeability iron nickel magnetic core finished product.Present invention process is simple, using non-real air atomizing iron nickel magnetic powder and without hydrogen reduction process, effectively reduce powder preparation cost, the iron nickel magnetic core finished product of preparation and prepared using vacuum aerosolization the magnetic conductivity of low oxygen content powder core, be superimposed be lost etc. similar natures.
Description
Technical field
The present invention relates to technical field of magnetic materials more particularly to a kind of preparation methods of high magnetic permeability iron nickel magnetic core.
Background technology
Powder preparation is that the first step for making alloy magnetic powder core and a step of most critical, conventional preparation method have mist
Change method, crush method etc., control oxygen content in power are to improve magnetic permeability, the key of management and control product quality.Especially making
During standby high value powder such as iron nickel, iron nickel molybdenum, have amount of powder producer using vacuum aerosolization mode come prepare high-quality iron nickel,
Iron nickel molybdenum powder.
Although the powder quality that vacuum aerosolization prepares is good, its equipment investment is big, and complex process causes powder
Yield is remained high by equipment limit and cost.Although existing non-real air atomizing is advantageous in cost, in melting and mist
Oxygen content can increase in powder during change, can improve powder cladding difficulty and loss using this powder, it is difficult to prepare high magnetic
Conductance magnetic core.
Addition hydrogen reducing annealing process reduces oxygen content in power after most of producers select antivacuum gas-atomized powder, but
It is that this technique still can improve powder cost, and can only reduce the oxygen content on powder surface, steel during Metal Melting can not be solved
Powder internal oxidition caused by liquid rolls, so the magnetic core performance that identical postchannel process is made can not be with vacuum aerosolization powder
It compares at end.
Invention content
The present invention provides a kind of at low cost to overcome the problems, such as that alloy magnetic powder core is of high cost in powder process
High magnetic permeability iron nickel magnetic core preparation method.
To achieve these goals, the present invention uses following technical scheme：
A kind of preparation method of high magnetic permeability iron nickel magnetic core, includes the following steps：
(1) iron nickel by powder is made using non-real air atomizing mode in iron-nickel alloy；
(2) it after above-mentioned iron nickel by powder is sieved by granularity, is matched by different grain size and carries out combinations of particle sizes；
(3) the primary cladding insulating compound of 3~5wt ‰ is sequentially added in the iron nickel by powder after combinations of particle sizes, 10~15wt's ‰
Coupling agent adds the water of 5~15wt%, is thoroughly mixed uniformly using wet ball-milling mode, is then heated to drying；
(4) the iron nickel magnetic powder once coated will be completed, be put into annealing furnace, in N2It is made annealing treatment under protective atmosphere；
(5) the iron nickel magnetic powder after annealing is thoroughly crushed, and sequentially adds 0.5~1.0wt%, bis- cladding insulation
Agent, the high-temperature agglomerant of 0.5~1.5wt% are thoroughly mixed uniformly, are then heated to drying；
(6) lubricant of 0.2~0.5wt% is added in the iron nickel magnetic powder for completing secondary cladding, after being sufficiently mixed 18~
20T/cm3Iron nickel magnetic core is pressed under pressure；
(7) by iron nickel magnetic core in N2Carry out annealing heat-treats under atmosphere, heat treatment temperature is 600~750 DEG C, atmosphere oxygen during annealing
Content is controlled in 30~50ppm；
(8) the iron nickel magnetic core after annealing is subjected to epoxy resin coating spraying, forms the asphalt mixtures modified by epoxy resin that thickness is 0.3~0.5mm
Fat lacquer coat obtains high magnetic permeability iron nickel magnetic core finished product.
The present invention directly using non-real air atomizing iron nickel magnetic powder and without hydrogen reduction process, prepare high magnetic permeability,
The performances such as superposition loss using vacuum aerosolization with preparing magnetic core technique similar in low oxygen content powder.By adding suitable packet
Material is covered, preferably suitable insulating coating method is crushed after being heat-treated by powder metallurgy and coated again, and compression moulding and high temperature move back
Ignition technique realizes rich oxygen content alloy powder and prepares μ 125 and Yi Shang magnetic conductivity magnetic core, and is lost and is superimposed performance and reach true
Air atomizing prepares low oxygen content powder phase same level.The present invention corresponds to vacuum aerosolization using non-real air atomizing preparation process
Technique, is the process that molten steel prepares powder after melting under atmospheric environment by aerosolization, and vacuum aerosolization is material in vacuum
The process of melting and then aerosolization in the vacuum environment of device fabrication.In production cost, powder property, powder both in conventional production
All there are larger differences for last price etc..
Preferably, in step (1), the mass percentage of Ni is 47~50% in the iron-nickel alloy, surplus Fe.
Preferably, in step (2), on the basis of iron nickel by powder gross mass, the combinations of particle sizes of iron nickel by powder is：+ 200 mesh
0~3%, 200~325 mesh of iron nickel by powder iron nickel by powder 50~60%, remaining be -300 mesh iron nickel by powder.
Preferably, in step (1), the iron nickel by powder tests Control for Oxygen Content in ＜ 2000ppm.
Preferably, in step (4), annealing temperature is 1000~1100 DEG C, and heat treatment time is 3~4h.
Preferably, in step (3) and (5), heating temperature is 110~120 DEG C.
Preferably, in step (3), the primary cladding insulating compound is ultrafine quartz powder.
Preferably, in step (5), the secondary cladding insulating compound is kaolin.
Preferably, in step (5), the high-temperature agglomerant is waterglass.
Preferably, in step (8), the lubricant is zinc stearate.
Therefore, the present invention has the advantages that：It is simple for process, using non-real air atomizing iron nickel magnetic powder and without
Hydrogen reduction process effectively reduces the cost of powder preparation, and the iron nickel magnetic core finished product of preparation using vacuum aerosolization with being prepared
Low oxygen content powder core magnetic conductivity, superposition loss etc. similar natures.
Specific embodiment
Below by specific embodiment, the technical solutions of the present invention will be further described.
In the present invention, if not refering in particular to, all devices and raw material is commercially available or the industry is common are following
Method in embodiment is this field conventional method unless otherwise instructed.
Embodiment 1
(1) iron nickel by powder will be made using non-real air atomizing mode containing the iron-nickel alloy of Ni 47wt%, 53%Fe, the iron
Nickel by powder test oxygen content is 1500ppm；
(2) after above-mentioned iron nickel by powder is sieved by granularity, combinations of particle sizes is carried out by following grain size proportion：It is total with iron nickel by powder
On the basis of quality, the combinations of particle sizes of iron nickel by powder is：The iron nickel by powder 60% of 200~325 mesh, the iron nickel by powder of -300 mesh
40%；
(3) ultrafine quartz powder of 3wt ‰, the coupling agent of 10wt ‰ are sequentially added in the iron nickel by powder after combinations of particle sizes, then is added
Enter the water of 5wt%, be thoroughly mixed uniformly using wet ball-milling mode, be then heated to drying in 110 DEG C；
(4) the iron nickel magnetic powder once coated will be completed, be put into annealing furnace, in N2It is made annealing treatment, is annealed under protective atmosphere
Temperature is 1000 DEG C, heat treatment time 4h；
(5) the iron nickel magnetic powder after annealing is thoroughly crushed, and sequentially adds 0.5wt% kaolin, the water of 0.5wt%
Glass is thoroughly mixed uniformly, is then heated to drying in 110 DEG C；
(6) zinc stearate of 0.2wt% is added in the iron nickel magnetic powder for completing secondary cladding, in 18T/cm after being sufficiently mixed3Pressure
Iron nickel magnetic core is pressed under power；
(7) by iron nickel magnetic core in N2Carry out annealing heat-treats under atmosphere, heat treatment temperature is 600 DEG C, atmosphere oxygen content during annealing
Control is in 30ppm；
(8) the iron nickel magnetic core after annealing is subjected to epoxy resin coating spraying, forms the epoxy resin coating that thickness is 0.3mm and apply
Layer, obtains high magnetic permeability iron nickel magnetic core finished product.
Embodiment 2
(1) iron nickel by powder is made using non-real air atomizing mode in the iron-nickel alloy that will contain Ni 50wt%, Fe 50wt%, the iron
Nickel by powder test oxygen content is 1200ppm；
(2) after above-mentioned iron nickel by powder is sieved by granularity, combinations of particle sizes is carried out by following grain size proportion：It is total with iron nickel by powder
On the basis of quality, the combinations of particle sizes of iron nickel by powder is：The iron nickel by powder 3% of+200 mesh, the iron nickel by powder of 200~325 mesh
50%, the iron nickel by powder 47% of -300 mesh；
(3) ultrafine quartz powder of 5wt ‰, the coupling agent of 15wt ‰ are sequentially added in the iron nickel by powder after combinations of particle sizes, then is added
Enter the water of 15wt%, be thoroughly mixed uniformly using wet ball-milling mode, be then heated to drying；
(4) the iron nickel magnetic powder once coated will be completed, be put into annealing furnace, in N2It is made annealing treatment, is annealed under protective atmosphere
Temperature is 1100 DEG C, heat treatment time 3h；
(5) the iron nickel magnetic powder after annealing is thoroughly crushed, and sequentially adds 1.0wt% kaolin, the water of 1.5wt%
Glass is thoroughly mixed uniformly, is then heated to drying in 120 DEG C；
(6) zinc stearate of 0.5wt% is added in the iron nickel magnetic powder for completing secondary cladding, in 20T/cm after being sufficiently mixed3Pressure
Iron nickel magnetic core is pressed under power；
(7) by iron nickel magnetic core in N2Carry out annealing heat-treats under atmosphere, heat treatment temperature is 750 DEG C, atmosphere oxygen content during annealing
Control is in 50ppm；
(8) the iron nickel magnetic core after annealing is subjected to epoxy resin coating spraying, forms the epoxy resin coating that thickness is 0.5mm and apply
Layer, obtains high magnetic permeability iron nickel magnetic core finished product.
Embodiment 3
(1) iron nickel by powder is made using non-real air atomizing mode in the iron-nickel alloy that will contain Ni 48wt%, Fe 52wt%, the iron
Nickel by powder tests Control for Oxygen Content in 1800ppm；
(2) after above-mentioned iron nickel by powder is sieved by granularity, combinations of particle sizes is carried out by following grain size proportion：It is total with iron nickel by powder
On the basis of quality, the combinations of particle sizes of iron nickel by powder is：The iron nickel by powder 2% of+200 mesh, the iron nickel by powder 55% of 200~325 mesh,
The iron nickel by powder 43% of 300 mesh；
(3) ultrafine quartz powder of 4wt ‰, the coupling agent of 12wt ‰ are sequentially added in the iron nickel by powder after combinations of particle sizes, then is added
Enter the water of 10wt%, be thoroughly mixed uniformly using wet ball-milling mode, be then heated to drying；
(4) the iron nickel magnetic powder once coated will be completed, be put into annealing furnace, in N2It is made annealing treatment, is annealed under protective atmosphere
Temperature is 1050 DEG C, heat treatment time 3.5h；
(5) the iron nickel magnetic powder after annealing is thoroughly crushed, and sequentially adds 0.8wt% kaolin, the water of 1.0wt%
Glass is thoroughly mixed uniformly, is then heated to drying in 115 DEG C；
(6) zinc stearate of 0.3wt% is added in the iron nickel magnetic powder for completing secondary cladding, in 19T/cm after being sufficiently mixed3Pressure
Iron nickel magnetic core is pressed under power；
(7) by iron nickel magnetic core in N2Carry out annealing heat-treats under atmosphere, heat treatment temperature is 700 DEG C, atmosphere oxygen content during annealing
Control is in 40ppm；
(8) the iron nickel magnetic core after annealing is subjected to epoxy resin coating spraying, forms the epoxy resin coating that thickness is 0.4mm and apply
Layer, obtains high magnetic permeability iron nickel magnetic core finished product.
High magnetic permeability iron nickel magnetic core end properties index made from embodiment 1-3 is detected：Copper wire uses Φ
0.4mm, 20 circle of coil turn test inductance L and quality factor with HP4284 inductance analyzer in 200kHz, 0.05V
Q.Copper wire uses Φ 0.8mm, 25 circle of coil turn, with HP4284 inductance analyzer in 10kHz, 0.05V test 0A electricity
Feel and add 20A (i.e. 100Oe) DC stacked inductance, calculate and be superimposed percentage in 100Oe.Power attenuation Φ
For 0.5mm copper wire in a manner that 30 circles add 5 circles, testing result is as shown in table 1：
1. testing result of table
As can be seen from Table 1, every magnetic performance of high magnetic permeability iron nickel magnetic core finished product of the invention is excellent, and magnetic conductivity is reachable
125。
Present invention process is simple, using non-real air atomizing iron nickel magnetic powder and without hydrogen reduction process, effectively reduces
Cost prepared by powder, the iron nickel magnetic core finished product of preparation and the magnetic of low oxygen content powder core that is prepared using vacuum aerosolization
The similar natures such as conductance, superposition loss.
The foregoing is merely presently preferred embodiments of the present invention, not makees limitation in any form to the present invention, is not surpassing
There are other variants and remodeling under the premise of going out the technical solution recorded in claim.
Claims (10)
1. a kind of preparation method of high magnetic permeability iron nickel magnetic core, which is characterized in that include the following steps：
(1) iron nickel by powder is made using non-real air atomizing mode in iron-nickel alloy；
(2) it after above-mentioned iron nickel by powder is sieved by granularity, is matched by different grain size and carries out combinations of particle sizes；
(3) the primary cladding insulating compound of 3~5wt ‰ is sequentially added in the iron nickel by powder after combinations of particle sizes, 10~15wt's ‰
Coupling agent adds the water of 5~15wt%, is thoroughly mixed uniformly using wet ball-milling mode, is then heated to drying；
(4) the iron nickel magnetic powder once coated will be completed, be put into annealing furnace, in N2It is made annealing treatment under protective atmosphere；
(5) the iron nickel magnetic powder after annealing is thoroughly crushed, and sequentially adds 0.5~1.0wt%, bis- cladding insulation
Agent, the high-temperature agglomerant of 0.5~1.5wt% are thoroughly mixed uniformly, are then heated to drying；
(6) lubricant of 0.2~0.5wt% is added in the iron nickel magnetic powder for completing secondary cladding, after being sufficiently mixed 18~
20T/cm3Iron nickel magnetic core is pressed under pressure；
(7) by iron nickel magnetic core in N2Carry out annealing heat-treats under atmosphere, heat treatment temperature is 600~750 DEG C, atmosphere oxygen during annealing
Content is controlled in 30~50ppm；
(8) the iron nickel magnetic core after annealing is subjected to epoxy resin coating spraying, forms the asphalt mixtures modified by epoxy resin that thickness is 0.3~0.5mm
Fat lacquer coat obtains high magnetic permeability iron nickel magnetic core finished product.
2. a kind of preparation method of high magnetic permeability iron nickel magnetic core according to claim 1, which is characterized in that in step (1),
The mass percentage of Ni is 47~50% in the iron-nickel alloy, surplus Fe.
3. a kind of preparation method of high magnetic permeability iron nickel magnetic core according to claim 1, which is characterized in that in step (2),
On the basis of iron nickel by powder gross mass, the combinations of particle sizes of iron nickel by powder is：0~3%, 200~325 mesh of iron nickel by powder of+200 mesh
Iron nickel by powder 50~60%, remaining be -300 mesh iron nickel by powder.
4. a kind of preparation method of high magnetic permeability iron nickel magnetic core according to claim 1, which is characterized in that in step (1),
The iron nickel by powder tests Control for Oxygen Content in ＜ 2000ppm.
5. a kind of preparation method of high magnetic permeability iron nickel magnetic core according to claim 1, which is characterized in that in step (4),
Annealing temperature is 1000~1100 DEG C, and heat treatment time is 3~4h.
6. a kind of preparation method of high magnetic permeability iron nickel magnetic core according to claim 1, which is characterized in that step (3) and
(5) in, heating temperature is 110~120 DEG C.
7. according to a kind of preparation method of any high magnetic permeability iron nickel magnetic cores of claim 1-6, which is characterized in that step
(3) in, the primary cladding insulating compound is ultrafine quartz powder.
8. according to a kind of preparation method of any high magnetic permeability iron nickel magnetic cores of claim 1-6, which is characterized in that step
(5) in, the secondary cladding insulating compound is kaolin.
9. according to a kind of preparation method of any high magnetic permeability iron nickel magnetic cores of claim 1-6, which is characterized in that step
(5) in, the high-temperature agglomerant is waterglass.
10. according to a kind of preparation method of any high magnetic permeability iron nickel magnetic cores of claim 1-6, which is characterized in that step
Suddenly in (6), the lubricant is zinc stearate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711328854.2A CN108231393A (en) | 2017-12-13 | 2017-12-13 | A kind of preparation method of high magnetic permeability iron nickel magnetic core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711328854.2A CN108231393A (en) | 2017-12-13 | 2017-12-13 | A kind of preparation method of high magnetic permeability iron nickel magnetic core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108231393A true CN108231393A (en) | 2018-06-29 |
Family
ID=62649485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711328854.2A Pending CN108231393A (en) | 2017-12-13 | 2017-12-13 | A kind of preparation method of high magnetic permeability iron nickel magnetic core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108231393A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202092A (en) * | 2018-09-17 | 2019-01-15 | 横店集团东磁股份有限公司 | A kind of technique for preparing iron sial powder using non-real air atomizing and making magnetic core |
| CN110957123A (en) * | 2019-12-17 | 2020-04-03 | 山西中磁尚善科技有限公司 | Method for preparing iron-nickel soft magnetic powder core with magnetic conductivity of 125 |
| WO2024061046A1 (en) * | 2022-09-21 | 2024-03-28 | 横店集团东磁股份有限公司 | Preparation method for iron-nickel magnetic powder core material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787125A (en) * | 2005-11-16 | 2006-06-14 | 安泰科技股份有限公司 | Iron-base non-crystal alloy powder, magnetic powder core with excellent high frequency performance and preparation process thereof |
| CN106057460A (en) * | 2016-05-12 | 2016-10-26 | 横店集团东磁股份有限公司 | Preparation method for gas atomized metal magnetic powder core |
| CN106205929A (en) * | 2016-08-19 | 2016-12-07 | 横店集团东磁股份有限公司 | A kind of ferrum nickel metal magnetic powder core preparation method |
-
2017
- 2017-12-13 CN CN201711328854.2A patent/CN108231393A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1787125A (en) * | 2005-11-16 | 2006-06-14 | 安泰科技股份有限公司 | Iron-base non-crystal alloy powder, magnetic powder core with excellent high frequency performance and preparation process thereof |
| CN106057460A (en) * | 2016-05-12 | 2016-10-26 | 横店集团东磁股份有限公司 | Preparation method for gas atomized metal magnetic powder core |
| CN106205929A (en) * | 2016-08-19 | 2016-12-07 | 横店集团东磁股份有限公司 | A kind of ferrum nickel metal magnetic powder core preparation method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109202092A (en) * | 2018-09-17 | 2019-01-15 | 横店集团东磁股份有限公司 | A kind of technique for preparing iron sial powder using non-real air atomizing and making magnetic core |
| CN110957123A (en) * | 2019-12-17 | 2020-04-03 | 山西中磁尚善科技有限公司 | Method for preparing iron-nickel soft magnetic powder core with magnetic conductivity of 125 |
| WO2024061046A1 (en) * | 2022-09-21 | 2024-03-28 | 横店集团东磁股份有限公司 | Preparation method for iron-nickel magnetic powder core material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102623121B (en) | Method for manufacturing iron-silicon material and Mu-90 iron-silicon magnetic powder core | |
| CN106205930B (en) | A kind of iron nickel molybdenum preparation process for magnetic powder core | |
| JP5022999B2 (en) | Powder magnetic core and manufacturing method thereof | |
| CN109273235B (en) | Double-shell insulation coating method for metal soft magnetic composite material | |
| CN102294474B (en) | Ferrosilicon material and mu50 ferrosilicon magnetic powder core manufacturing method | |
| CN102294476B (en) | Ferrosilicon material and mu75 ferrosilicon magnetic powder core manufacturing method | |
| CN109285685B (en) | Preparation method of high-permeability gas-atomized Fe-Si-Al magnetic powder core | |
| CN102294475B (en) | Ferrosilicon material and mu60 ferrosilicon magnetic powder core manufacturing method | |
| CN100519013C (en) | Fe-Ni50 series alloy powder and magnetic powder core manufacturing method | |
| KR20160030052A (en) | Powder for magnetic core, method of producing dust core, dust core, and method of producing powder for magnetic core | |
| CN112509777B (en) | Soft magnetic alloy material and preparation method and application thereof | |
| CN103219119A (en) | Preparation method of mu90 high-permeability Fe-based amorphous magnetic powder core | |
| CN105344993B (en) | A kind of method that temperature and pressure prepare iron-silicon-aluminum soft magnet powder core | |
| JP2016507887A (en) | High investment rate amorphous powder magnetic core by high temperature molding and manufacturing method thereof | |
| JP5715614B2 (en) | Powder magnetic core and manufacturing method thereof | |
| CN108231393A (en) | A kind of preparation method of high magnetic permeability iron nickel magnetic core | |
| CN103189936A (en) | Soft magnetic powder, powder granules, dust core, electromagnetic component, and method for manufacturing dust core | |
| CN104028747B (en) | Inhomogeneous nucleation insulation coating processing method of metal soft magnetic composite material | |
| CN108133801A (en) | A kind of integrally-formed inductor and preparation method thereof | |
| CN111451515A (en) | Low-power-consumption soft magnetic alloy material, preparation method thereof and electronic device | |
| CN104028751A (en) | High-insulativity insulated coating treatment method of metal soft magnetic composite material | |
| TW201712699A (en) | Dust core, method for producing said dust core, electric/electronic component provided with said dust core, and electric/electronic device on which said electric/electronic component is mounted | |
| CN102303115A (en) | Manufacturing method of ferrum silicon material and mu26 ferrum silicon magnetic powder core | |
| CN109202092B (en) | Process for preparing iron-silicon-aluminum powder and manufacturing magnetic core by using non-vacuum gas atomization | |
| CN103594219A (en) | Method for manufacturing sendust material and mu173 sendust magnetic powder core |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180629 |
|
| RJ01 | Rejection of invention patent application after publication |