CN110391079A - Manufacturing device and manufacturing method of molded inductance element and application thereof - Google Patents
Manufacturing device and manufacturing method of molded inductance element and application thereof Download PDFInfo
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- CN110391079A CN110391079A CN201810365340.2A CN201810365340A CN110391079A CN 110391079 A CN110391079 A CN 110391079A CN 201810365340 A CN201810365340 A CN 201810365340A CN 110391079 A CN110391079 A CN 110391079A
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- 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
- H01F41/005—Impregnating or encapsulating
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- 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
- H01F41/04—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 for manufacturing coils
- H01F41/10—Connecting leads to windings
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- Coils Or Transformers For Communication (AREA)
Abstract
The present invention provides manufacturing device and manufacturing method of a kind of molded inductance element and application thereof；Wherein, which mainly includes a mold and an at least magnetic force generating unit.Particularly, which has an at least accommodation groove to accommodate coil；Also, after inserting accommodation groove mixed with the mold material of ferromagnetic powder, the present invention provides a magnetic force to the accommodation groove using molding module.At this point, the influence by magnetic force, each mold material monomer will move down in accommodation groove, achieve the effect that a molding plastotype.In addition, being not necessary to during the entire process of producing molded inductance with manufacturing device of the invention or method using any molding tool, therefore it can be greatly reduced and result from frictional force between mold material and accommodation groove inner wall；Meanwhile the enameled wire damage because of coil caused by the excessive pressure of molding tool will not occur.
Description
Technical field
Technical field of the present invention about passive device espespecially replaces one kind of the molding pressure of traditional upper mold with magnetic force
Manufacturing device and manufacturing method of molded inductance element and application thereof.
Background technique
Inductor is one kind of numerous circuit elements, and major function includes: the interference for preventing electromagnetic wave, masking electromagnetism spoke
It penetrates, the noise in filter current and inhibit immediate current and stabling current.Divided with structure, can be divided into Wound-rotor type inductance
(Wire-wound), pattern (molding), lamination printing (Multilayer) and film (Thin-film) are molded as.Currently,
Molded inductance (Molding inductor) is widely used among precise electronic product, such as smartphone,
Running gear, Netcom, automotive electronics.
Figure 1A and Figure 1B shows a kind of process schematic representation of molded inductance.It is familiar with molded inductor design and manufacture
Passive device engineer should be understood that the manufacturing method of existing molded inductance generally includes following steps:
(1) mold 2 ' once with multiple accommodation grooves 21 ' is got ready；
(2) multiple coils 51 ' are respectively implanted in those accommodation grooves 21 '；
(3) it will be poured among multiple accommodation groove 21 ' mixed with the mold material 3 ' of ferromagnetic powder；
(4) upper mold 4 ' with multiple compression legs 41 ' is got ready；
(5) mobile upper mold 4 ', so that multiple compression leg 41 ' respectively enters in those accommodation grooves 21 '；
(6) in an environment of high temperature, high pressure is provided to the mold material mixed with ferromagnetic powder with those compression legs 41 '
Material 3 ', makes it be shaped to a moulding bodies 52 ', and the coil 51 ' is coated on wherein；
(7) upper mold 4 ' is removed, multiple molded inductance 5 ' are obtained.
It is worth noting that, being molded the modeling mixed with ferromagnetic powder filled among the accommodation groove 21 ' using upper mold 4 '
When mold materials 3 ', the mold material 3 ' mixed with ferromagnetic powder can because by lateral pressure effect and and accommodation groove
21 ' inner wall generates huge frictional force.It is found in practice, this derivative frictional force can offset upper mold 4 ' and bestow this mixed with ferromagnetic
Property powder mold material 3 ' partial pressure, cause the Density Distribution of the moulding bodies 52 ' of compression molding uneven；On the other hand,
Excessively pressure may also cause the enamel insulated wire of coil 51 ' to be destroyed.
As shown in the above description, how effective improvement project, which has become, to be proposed to the technique of existing molded inductance
Project particularly important at present.In view of this, the inventor of this case is strongly studied invention, and the completion present invention is researched and developed finally
A kind of molded inductance element manufacturing device and manufacturing method and application thereof.
Summary of the invention
Practical experience shows that mold molding in use fills in the mold material mixed with ferromagnetic powder among accommodation groove
When, the mold material mixed with ferromagnetic powder can generate huge because of the effect by lateral pressure and with the inner wall of accommodation groove
Big frictional force；Also, research finds that this derivative frictional force can offset the mold material that upper mold bestows this mixed with ferromagnetic powder
The partial pressure of material causes the moulding bodies being finally pressed and molded to show the defect of Density Distribution unevenness.In view of this, of the invention
Main purpose be to provide manufacturing device and manufacturing method of a kind of molded inductance element and application thereof；The wherein manufacture
Device mainly includes a mold and an at least magnetic force generating unit.Particularly, which has multiple accommodation grooves to accommodate individually
Coil；Also, after inserting accommodation groove mixed with the mold material of ferromagnetic powder, the present invention provides a magnetic using molding module
Power is to the accommodation groove.At this point, the influence by magnetic force, each mold material monomer will be in accommodation groove to moving down
It is dynamic, achieve the effect that a molding plastotype.
In order to reach the main purpose of aforementioned present invention, inventor provides the manufacture of the molded inductance element
One embodiment of device, comprising:
One mold has one or more accommodation grooves, to accommodate one or more coils；And
An at least magnetic force generating unit；
Wherein, mixed with a mold material of a ferromagnetic powder can be received in the accommodation groove that each is equipped with the coil it
In；Also, magnetic force is generated to the accommodation groove using the magnetic force generating unit, may make the mold material inserted in the accommodation groove
By the magnetic force effect and be shaped to a moulding bodies.
In the embodiment of the manufacturing device of the molded inductance element of aforementioned present invention, comprising:
One loading plate is arranged on, in favor of one or more of coils with for one or more of coils
It is placed into the accommodation groove of the mold.
Also, in order to reach the main purpose of aforementioned present invention, inventor provides the molded inductance element
Manufacturing method an embodiment, comprising the following steps:
(1) loading plate, the mold with an at least accommodation groove are provided and with an at least magnetic force generating unit
One molding module；
(2) at least one coil is carried with the loading plate；
(3) loading plate and the mold are combined, so that the coil is placed among the accommodation groove；
(4) it will be inserted in each accommodation groove mixed with the mold material of ferromagnetic powder；And
(5) magnetic force is generated to the accommodation groove, so that inserting the mold material in the accommodation groove using the magnetic force generating unit
Material is shaped to a moulding bodies by the effect of the magnetic force under a specific temperature.
Detailed description of the invention
Figure 1A is the process schematic representation for showing a kind of molded inductance；
Figure 1B is the process schematic representation for showing a kind of molded inductance；
Fig. 2 is a kind of schematic perspective view of the manufacturing device of molded inductance element of the invention；
Fig. 3 is the sectional view of the manufacturing device of display molded inductance element of the invention；
Fig. 4 is the perspective view for showing moulding bodies；And
Fig. 5 is a kind of flow chart of the manufacturing method of molded inductance element of the invention.
Wherein appended drawing reference are as follows:
The manufacturing device of 1 molded inductance element
11 loading plates
12 molds
13 molding modules
14 control modules
32 coils
121 accommodation grooves
1211 first openings
1212 second openings
F-P mold material
31 moulding bodies
S1-S6 method and step
33 electrode plates
3 molded inductance
131 magnetic force generating units
21 ' accommodation grooves
Mold under 2 '
51 ' coils
3 ' mixed with ferromagnetic powder mold material
21 ' accommodation grooves
41 ' compression legs
4 ' upper molds
52 ' moulding bodies
5 ' molded inductance
Specific embodiment
In order to more clearly describe the manufacturing device and system of a kind of molded inductance element proposed by the invention
It makes method its purposes and elaborates presently preferred embodiments of the present invention below in conjunction with schema.
Referring to Fig. 2, the schematic perspective view of the manufacturing device to show a kind of molded inductance element of the invention.
Also, please refer to Fig. 3, for the sectional view of the manufacturing device of display molded inductance element of the invention.As Fig. 2 with
Shown in Fig. 3, the manufacturing device 1 of molded inductance element of the invention specifically includes that a loading plate 11, a mold 12, a mould
Mold block 13 and a control module 14；Wherein, the loading plate 11 is to carry multiple coils 32, and is set to the loading plate
Multiple coil 32 on 11 is arranged in array type.On the other hand, which has to accommodate multiple coil 32
Multiple accommodation grooves 121.It is worth noting that, each accommodation groove 121 all has one first opening 1211 and one second opening 1212.
Particularly, the present invention is to provide a molding pressure with the molding module 13 of multiple magnetic force generating units 131.In operation
On, loading plate 11 is bound to after mold 12, coil 32 may make to enter in accommodation groove 121 by the first opening 1211；It connects
, it will be inserted in accommodation groove 121 mixed with the mold material F-P of ferromagnetic powder by the second opening 1212, then recycled
Control module 14 controls multiple magnetic force generating unit 131 and provides in a magnetic force to multiple accommodation groove 121, so that inserting the appearance
The mold material F-P set in slot 121 is shaped to a moulding bodies 31 by the effect of the magnetic force under a specific temperature.Fig. 4
Show the perspective view of moulding bodies.
In this way, above description makes the related component of the manufacturing device 1 of molded inductance element of the invention
Clear introduction.Unceasingly, following the description will continue to introduce a kind of manufacturing method of molded inductance element of the invention.
Referring to Fig. 2, Fig. 3 and Fig. 4, and please refer to a kind of molded inductance element of the invention shown by Fig. 5
The flow chart of manufacturing method.The manufacturing method of the molded inductance element provides one in step S1 is first carried out in process
Loading plate 11, the mold 12 with multiple accommodation grooves 121 and the molding module with multiple magnetic force generating units 131
13；Wherein, each accommodation groove 121 all has one first opening 1211 and one second opening 1212.The process of the manufacturing method
Step S2 and S3 are unceasingly executed, into use the loading plate 11 to carry multiple coils 32, the loading plate 11 is then combined and is somebody's turn to do
Mold 12, so that multiple coil 32 is respectively contained in multiple appearance by the first opening 1211 of multiple accommodation groove 121
It sets among slot 121.
Unceasingly, the process of the manufacturing method then executes step S4, will be mixed with a mold material F-P of ferromagnetic powder
It is inserted in each accommodation groove 121 by second opening 1212.It must be supplemented with explanation, the ferromagnetic powder is soft magnetism
Property material, the magnetic permeability with range between 5 to 200, exemplary materials for example: carbon-based iron powder, Sendust (Fe-
Si-Al alloy), Kool-Mu (Fe-Si-Al alloy), MPP (Fe-Ni-Mo alloy), high-flux (Fe-Ni alloy/C), X-
Flux (Fe-Si alloy), oxide/nickel ferrite material (NiO.Fe2O3), zinc-iron oxide ferrite (ZnO.Fe2O3), copper oxide
Ferrite Material (CuO.Fe2O3), Manganese Iron ferrite (MnO.Fe2O3), oxidation cobalt ferrite material (CoO.Fe2O3)、
Aoxidize barium ferrite material (BaO.Fe2O3), Ni-Zn series ferrite material, Ni-Cu series ferrite material, Mn-Zn based ferrite
Material, Ni-Zn series ferrite material, amorphous phase magnetic conductive metal powder (such as Fe-Si-Cr-B), above-mentioned the two mixture or
Mixture more than above-mentioned the two.On the other hand, the mold material F-P may, for example, be the solidification adhesive agent such as resin.
Then, among step S5, control module 14 is operated to control multiple magnetic force generating unit 131 and generates a magnetic force
To multiple accommodation groove 121, so that inserting the mold material F-P in the accommodation groove 121 under 80 DEG C -150 DEG C of temperature
By the magnetic force effect and be shaped to a moulding bodies 31.It must illustrate, in the system of existing molded inductance
Make in method (as shown in Figure 1A and Figure 1B), be usually molded using upper mold 4 ' fill among the accommodation groove 21 ' mixed with ferromagnetic
The mold material of the mold material 3 ' of property powder, wherein molding pressure provided by the upper mold 4 ' generally between 400MPa extremely
Between 1200MPa.Based on this reason, in the present invention, the molding pressure which must provide equity can to insert
The mold material F-P in the accommodation groove 121 is acted under 80 DEG C -150 DEG C of temperature by enough molding pressures
Type is moulding bodies 31.
The engineer for being familiar with magnetic force generation device should be it is contemplated that the simplest implementation of the magnetic force generating unit 131
Example is electromagnet (Electromagnet), it is possible to provide unit is the magnetic force of newton (N).It therefore, can be according to related conversion formula
Existing molding unit of force " MPa " is first converted into " kgf/cm2"；Then, then by the unit " kgf " of power it is converted into " newton
(N)".Shown in related conversion process such as following table (1).Also, as table (1) it is known that equity molding pressure provided by magnetic force is situated between
Between 39984 newton/square centimeter to 1199520 newton/square centimeter.
Table (1)
| 1MPa | 10.2kgf/cm2 |
| 1kgf | 9.8N |
It is worth noting that, the magnetic force can for it is following any one: it is pulse magnetic (Pulse magnetic force), solid
Determine magnetic force (Constant magnetic force), non-linear magnetic force (Non-linear magnetic force), dynamic magnetic
Power (dynamic magnetic force), the combination of aforementioned the two or the combination of the aforementioned above person of the two.Citing and
Speech, the magnetic force are the combination of a pulse magnetic and a fixed magnetic force；Wherein, the pulse magnetic is to by mold material F-
P vibration is uniform, and the fixation magnetic force for continuing to provide then is used as molding pressure.In the mold material F-P's mixed with ferromagnetic powder
During by magnetic, each mold material F-P monomer can be held because of the influence by magnetic force in direction in accommodation groove 121
Support plate 11 is mobile, achievees the effect that a molding plastotype.It is worth noting that, being not necessary in whole process using any stamper
Tool, therefore the influence of frictional force can be greatly reduced；Meanwhile it will not occur because of line caused by the excessive pressure of molding tool
The enameled wire damage of circle 32.Further, after completing step S5, which then executes step S6, in each molding
31 outer surface of body forms two electrode plates 33, so that two electrode plate 33 is respectively and electrically connected to be coated on inside the moulding bodies 31
Two ends of the coil 32.Finally, that is, molded inductance 3 as shown in Figure 4 is obtained.
Exemplary embodiment
In exemplary embodiment, mainly using amorphous phase magnetic conductive metal material as the raw material of moulding bodies 31, especially
By average grain diameter be 35 μm Fe-Si-Cr-B and average grain diameter be 15 μm Fe-Si-Cr-B according to 0.75:0.255 weight
Than the raw materials technology for being mixed into the moulding bodies 31；Then, obtained amorphous phase is led further in accordance with the volume ratio of 0.95:0.05
The mixed powder of magnetic metal material is mixed with resin (that is, colloid).Also, among this exemplary embodiment, molding pressure is according under
Table (2) design, and it is expected that the size of the moulding bodies 31 of manufacture is 7 (mm) × 7 (mm) × 3 (mm).
Table (2)
Due to each moulding bodies 31 size be 7 (mm) × 7 (mm) × 3 (mm), can calculated in advance go out each accommodating
Slot 121 is 0.000049m by magnetic force area2.Magnetic force is the magnetic field strength of 18,300 Gausses (1.83 tesla).Then, just
Magnetic force suffered by each accommodation groove 121 can be calculated according to following mathematic(al) representation (1).
In above formula (1), B0For magnetic induction intensity (unit: tesla), S0For by magnetic force area (unit: square metre), F
For magnetic force (unit: newton (N)).In this way, being received in accommodation groove in the mixed powder of amorphous phase magnetic conductive metal material and the mixing of resin
After 121, it can then control molding module 13 and generate the magnetic field strength of 18,300 Gausses to each accommodation groove 121, so that
Mixing in accommodation groove 121 is reached 6.66kgf by magnetic force.It must illustrate, the magnetic force is pulse magnetic and fixed magnetic
The combination of power；Wherein, the duty ratio (duty cycle) of pulse magnetic is 50%, and is divided with 1 second duty cycle continuous action 2
Clock.Also, after the pulse magnetic terminates effect, then successively with each accommodation groove of fixation magneticaction of 6.66kgf
121。
After being completed with molding module 13 for the magneticaction of each accommodation groove 121, amorphous phase magnetic conductive metal material
The mixing of mixed powder and resin will be the moulding bodies 31 having a size of 7 (mm) × 7 (mm) × 3 (mm) in 121 internal shaping of accommodation groove.Into
One step, recycle B-H analyzer to measure the magnetic permeability of moulding bodies 31, shown in metric data such as following table (3).
Table (3)
The element engineer for being related to molding inductor design and manufacture for a long time can be learnt by upper table (3), utilize this case mould
Be moulded into type inductance element manufacturing device and method manufacture inductance element moulding bodies 31, with lower stress obtain it is higher and
Uniform density.On the other hand, it is necessary to be subject to, it is emphasized that mold 12 used in this exemplary embodiment is multi-cavity mold
(also that is, more accommodation grooves 121)；However, action principle is still phase by technical application of the invention in the mold 12 in single mode cave
With.
On the other hand, it is necessary to although being subject to, it is emphasized that molded inductance element of the invention as shown in the above description
Manufacturing device and manufacturing method can be individually used for the manufacturing of molded inductance element；However, in the application of possibility
In, the manufacturing device of molded inductance element of the invention also can be with the manufacturing equipment phase of existing various molded inductance
Mutually cooperation, such as: it include an at least upper mold 4 ' shown in Figure 1A and at least once the one of mold 2 ' molded inductance element
Manufacturing equipment, and then it is applied to the manufacturing of molded inductance element.
In this way, above-mentioned completely and clearly demonstrated the manufacturing device and method of molded inductance element of the invention；
Also, have the advantages that through the present invention from the above following:
(1) shown in Figure 1A and Figure 1B, the prior art be molded using upper mold 4 ' fill among accommodation groove 21 ' mixed with ferromagnetic
Property powder mold material 3 ' when, the mold material 3 ' mixed with ferromagnetic powder can because by lateral pressure effect and
Huge frictional force is generated with the inner wall of accommodation groove 21 '；It is found in practice, this derivative frictional force can offset upper mold 4 ' and bestow this
Mixed with the partial pressure of the mold material 3 ' of ferromagnetic powder, cause the Density Distribution of the moulding bodies 52 ' of compression molding uneven.Have
In consideration of it, the manufacturing device mainly includes a carrying present invention particularly provides a kind of manufacturing device of molded inductance element
Plate 11, a mold 12 and a molding module 13.Particularly, which has multiple accommodation grooves 121 to accommodate coil individually
32；Also, after inserting accommodation groove 121 mixed with the mold material F-P of ferromagnetic powder, the present invention is mentioned using molding module 13
For a magnetic force to the accommodation groove 121.At this point, the influence by magnetic force, each mold material F-P monomer will accommodated
It is moved down in slot 121, achievees the effect that a molding plastotype.
(2) it is worth noting that, producing the whole process of molded inductance 3 with manufacturing device or method of the invention
In be not necessary to using any molding tool, therefore can be greatly reduced to result from and rub between 121 inner wall of mold material F-P and accommodation groove
Power；Meanwhile the enameled wire damage because of coil 32 caused by the excessive pressure of molding tool will not occur.
It must be subject to detailed description the illustrating for possible embodiments of the present invention, it is emphasized that above-mentioned, only the reality
Apply the scope of the patents that example is not intended to limit the invention, all equivalence enforcements or change without departing from carried out by technical spirit of the present invention,
It is intended to be limited solely by the scope of the patents of this case.
Claims (13)
1. a kind of manufacturing device of molded inductance element, comprising:
One mold has one or more accommodation grooves, to accommodate one or more coils；And
An at least magnetic force generating unit；
Wherein, each can be received in mixed with a mold material of ferromagnetic powder to be equipped among the accommodation groove of the coil；And
And generate magnetic force to the accommodation groove using the magnetic force generating unit, may make the mold material inserted in the accommodation groove by
The effect of the magnetic force and be shaped to a moulding bodies.
2. the manufacturing device of molded inductance element as described in claim 1, which is characterized in that the mold and accommodation groove one
Body forming is respective independent component.
3. the manufacturing device of molded inductance element as described in claim 1, further includes:
One loading plate, loading plate is arranged on for one or more of coils, in favor of one or more of lines
Circle is placed into the accommodation groove of the mold.
4. the manufacturing device of molded inductance element as described in claim 1, which is characterized in that the magnetic force generating unit institute
The magnetic force generated can for it is following any one: pulse magnetic (Pulse magnetic force), fixed magnetic force (Constant
Magnetic force), non-linear magnetic force (Non-linear magnetic force), dynamic magnetic force (dynamic
Magnetic force), the combination of aforementioned the two or the combination of the aforementioned above person of the two.
5. the manufacturing device of molded inductance element as claimed in claim 2, which is characterized in that each accommodation groove tool
Have:
One first opening, wherein by the loading plate be bound to the mold may make the coil by this first be open enter should
Accommodation groove；And
One second opening, wherein second be open by this mixed with the mold material of the ferromagnetic powder and insert the accommodation groove
It is interior.
6. the manufacturing device of molded inductance element as described in claim 1, further includes:
One control module is electrically connected to the magnetic force generating unit, to control the magnetic force generating unit provide the magnetic force to should
In accommodation groove.
7. a kind of purposes of the manufacturing device of the molded inductance element as described in claim 1 to 5, which is characterized in that institute
State molded inductance element manufacturing device can with include a upper mold and an once molded inductance element of mold
Manufacturing equipment cooperates, the manufacturing for molded inductance element.
8. a kind of manufacturing method of molded inductance element, comprising the following steps:
(1) loading plate, the mold with an at least accommodation groove and an at least magnetic force generating unit are provided；
(2) at least one coil is carried with the loading plate；
(3) loading plate and the mold are combined, so that the coil is placed among the accommodation groove；
(4) it will be inserted in each accommodation groove mixed with the mold material of ferromagnetic powder；And
(5) magnetic force is generated to the accommodation groove, so that the mold material inserted in the accommodation groove exists using the magnetic force generating unit
A moulding bodies are shaped to by the effect of the magnetic force under one specific temperature.
9. the manufacturing method of molded inductance element as claimed in claim 8, which is characterized in that further include following steps:
(6) two electrode plates are formed in the outer surface of each moulding bodies, so that two electrode plate is respectively and electrically connected to be coated on
Two ends of the coil inside the moulding bodies.
10. the manufacturing method of molded inductance element as claimed in claim 8, which is characterized in that ferromagnetic powder tool
There is a magnetic permeability of the range between 5 to 200, and the mold material is resin.
11. the manufacturing method of molded inductance element as claimed in claim 8, which is characterized in that the magnetic force can be following
Any one: pulse magnetic (Pulse magnetic force) fixes magnetic force (Constant magnetic force), is non-thread
Property magnetic force (Non-linear magnetic force), dynamic magnetic force (dynamic magnetic force), aforementioned the two
Combination or the aforementioned above person of the two combination.
12. the manufacturing method of molded inductance element as claimed in claim 8, which is characterized in that the ferromagnetic powder can
For it is following any one: carbon-based iron powder, Sendust (Fe-Si-Al alloy), Kool-Mu (Fe-Si-Al alloy), MPP (Fe-Ni-
Mo alloy), high-flux (Fe-Ni alloy/C), X-flux (Fe-Si alloy), oxide/nickel ferrite material (NiO.Fe2O3), oxygen
Change Zinc ferrite material (ZnO.Fe2O3), copper oxide Ferrite Material (CuO.Fe2O3), Manganese Iron ferrite
(MnO.Fe2O3), oxidation cobalt ferrite material (CoO.Fe2O3), oxidation barium ferrite material (BaO.Fe2O3), Ni-Zn system iron oxygen
Body material, Ni-Cu series ferrite material, Mn-Zn series ferrite material, Ni-Zn series ferrite material.The mixing of above-mentioned the two
Mixture more than object or above-mentioned the two.
13. the manufacturing method of molded inductance element as claimed in claim 8, which is characterized in that the specific temperature between
Between 80 DEG C to 150 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810365340.2A CN110391079A (en) | 2018-04-20 | 2018-04-20 | Manufacturing device and manufacturing method of molded inductance element and application thereof |
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| CN201810365340.2A CN110391079A (en) | 2018-04-20 | 2018-04-20 | Manufacturing device and manufacturing method of molded inductance element and application thereof |
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Application publication date: 20191029 |