CN106169363A - A kind of common mode inductance applying high stability molybdenum perm magnetic core and manufacture method thereof - Google Patents
A kind of common mode inductance applying high stability molybdenum perm magnetic core and manufacture method thereof Download PDFInfo
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- CN106169363A CN106169363A CN201610713375.1A CN201610713375A CN106169363A CN 106169363 A CN106169363 A CN 106169363A CN 201610713375 A CN201610713375 A CN 201610713375A CN 106169363 A CN106169363 A CN 106169363A
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- 229910052750 molybdenum Inorganic materials 0.000 title claims abstract description 96
- 239000011733 molybdenum Substances 0.000 title claims abstract description 96
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 18
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims abstract description 18
- 239000000945 filler Substances 0.000 claims abstract description 5
- 239000003822 epoxy resin Substances 0.000 claims description 17
- 229920000647 polyepoxide Polymers 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 9
- 238000005538 encapsulation Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- 238000004513 sizing Methods 0.000 claims description 8
- 238000001291 vacuum drying Methods 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 5
- 229910017083 AlN Inorganic materials 0.000 claims description 4
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 150000002751 molybdenum Chemical class 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000000087 stabilizing effect Effects 0.000 claims description 4
- 238000010561 standard procedure Methods 0.000 claims description 4
- 239000004593 Epoxy Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000005855 radiation Effects 0.000 abstract description 4
- 239000003365 glass fiber Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 229920002379 silicone rubber Polymers 0.000 abstract 1
- 239000004945 silicone rubber Substances 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 58
- 230000035699 permeability Effects 0.000 description 6
- 230000006698 induction Effects 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000000411 inducer Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000036413 temperature sense Effects 0.000 description 1
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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
- H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
- H01F1/147—Alloys characterised by their composition
- H01F1/14708—Fe-Ni based alloys
- H01F1/14733—Fe-Ni based alloys in the form of particles
- H01F1/14741—Fe-Ni based alloys in the form of particles pressed, sintered or bonded together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F17/00—Fixed inductances of the signal type
- H01F17/04—Fixed inductances of the signal type with magnetic core
- H01F17/045—Fixed inductances of the signal type with magnetic core with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
- H01F27/255—Magnetic cores made from particles
-
- 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
-
- 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
- H01F41/0206—Manufacturing of magnetic cores by mechanical means
- H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
-
- 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
- H01F41/12—Insulating of windings
- H01F41/127—Encapsulating or impregnating
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Soft Magnetic Materials (AREA)
- Coils Or Transformers For Communication (AREA)
Abstract
The invention discloses a kind of common mode inductance applying high stability molybdenum perm magnetic core and manufacture method thereof, by controlling the molding of molybdenum perm magnetic core, fixing and impact destressing deformation school shape destressing repeatedly circular treatment obtains the molybdenum perm magnetic core that stability is high, further through the stability of common mode inductance using the excellent aluminum-nitride-based ceramic skeleton of electromagnetic performance, fully closed aluminium alloy radome, silicone rubber to improve the present invention with the mode of the glass fibre gap fillers that 9:1 mixes by weight；The common mode inductance stability applying high stability molybdenum perm magnetic core of the present invention is high, excellent radiation performance good to temperature-insensitive, length in service life, electromagnetic wave shielding.
Description
Technical field
The present invention relates to field of electrical components, particularly relate to a kind of common mode inductance applying high stability molybdenum perm magnetic core
And manufacture method.
Background technology
Inducer (Inductor) is the element that electric energy can be converted into magnetic energy and store.The structure of common mode inductance
It is similar to transformator, but only one of which winding.Common mode inductance has certain inductance, and it only hinders the change of electric current.If altogether
Mould inductance is not when having electric current to pass through, and during circuit ON, it will attempt to hinder electric current to flow through it；If common mode inductance exists
Having under the state that electric current passes through, when circuit disconnects, it will attempt to maintain electric current constant.Common mode inductance also known as choke, reactor,
Dynamically reactor.
Molybdenum perm material has the highest permeability, saturation induction density and relatively low coercivity and resistivity, mainly
The transformator small-sized, highly sensitive of use, amplifier, relay, choke coil, magnetic recording head, magnetic shield in low-intensity magnetic field
Deng, it is one of best core material of stability.
In the Patents the most applied for, patent " a kind of high-temperature stability inductance " (application number:
201610011573.3, publication date: 2016-04-06), disclose the composition structure of a kind of high-temperature stability inductance, but it is not
Material essence is processed and improves, therefore the foundation is weak of its temperature stability, can only be by complicated structure and heat radiation
Ensureing its temperature stability, but its framework material used is plastics, thermal coefficient of expansion is relatively big, and temperature stability is poor, uses
Magnetic core be N48, be a kind of neodymium iron boron magnetic core, the advantage of this magnetic core is that cost performance is high, has good mechanical property, deficiency
Place is that Curie point is low, and temperature stability is poor, and is prone to dusting corrosion, and therefore its temperature stability is the poorest, service life
Shorter, simultaneously because its permeability is much smaller than molybdenum perm, the therefore inducer of same performance, its volume will be much larger than using molybdenum slope
The not inducer of magnetic core；Due to the middle aluminium alloy semi-closed structure used, although there is certain electromagnetic shielding capability, but compare
For aluminium alloy full-closed structure, its electromagnetic shielding capability is more weak, electromagnetism less stable；And due to the least in this invention
Part aluminium alloy is connected with functional area, and rate of heat dispation is relatively low.
Summary of the invention
For solving drawbacks described above present in prior art, it is desirable to provide a kind of stability is high, unwise to temperature
Sense, length in service life, electromagnetic wave shielding are good, the common mode inductance system applying high stability molybdenum perm magnetic core of excellent radiation performance
Make method.
To achieve these goals, the present invention is by the following technical solutions: one applies high stability molybdenum perm magnetic core
Common mode inductance manufacture method, comprise the following steps:
1) selection of each parts and preparation
1. skeleton selects annular aluminum-nitride-based ceramic skeleton, and this aluminum-nitride-based pottery selection standard is: specific insulation >=2 ×
1013Ω cm, dielectric strength >=750kV/cm, thermal conductivity >=25W/m K, bending strength >=400Mpa, young's modulus >=
320Gpa, fracture toughness >=25Mpa；
2. the molybdenum perm raw material of high stability selected by magnetic core, and this molybdenum perm raw material contains molybdenum 3.2%-3.8%, iron content 15.8%-
17.2%, nickeliferous 79%-81%；
3. radome uses aluminium alloy to make, and uses full-closed structure；
4. encapsulating material uses epoxy resin；
5. winding uses standard winding copper cash；
6. insulation heat-transfer filler selects special alumina ceramic grain；
2) processed of magnetic core
1. molybdenum perm raw material is positioned over and is assembled with under the stamping machine of annular punch, in endless metal diel, by standard
Method impact die mould, it is thus achieved that multiple molybdenum perm ring plates；
2., after 1. step completes, molybdenum perm ring plate step 1. obtained puts into vacuum drying oven, in the vacuum environment of 1pa-10pa,
Carry out pre-anneal treatment at a temperature of 950 DEG C-1000 DEG C, come out of the stove after cooling to 550 DEG C-580 DEG C after having annealed with the furnace, it is thus achieved that become
Shape molybdenum perm ring plate；
3., after the deformation molybdenum perm ring plate laminated multi-layer 2. step obtained, it is placed in shape-setting clamp and carries out physical constraints calmly
Type, it is thus achieved that sizing molybdenum perm magnetic core；
4. vacuum drying oven put into by sizing molybdenum perm magnetic core step 3. obtained, in the vacuum environment of 1pa-10pa, 950 DEG C-
Carry out whole annealing at a temperature of 1000 DEG C, come out of the stove after cooling to 550 DEG C-580 DEG C after having annealed with the furnace, it is thus achieved that destressing molybdenum
Perm magnetic core；
5. 3. ~ 4. operation is repeated, until the destressing molybdenum perm magnetic core obtained after removing high temperature resistant shape-setting clamp remains to full
Foot dimensional requirement, i.e. obtains stand-by molybdenum perm magnetic core；
6. the stand-by molybdenum perm magnetic core using epoxy resin 5. to obtain step bonds and encapsulates, and i.e. obtains required molybdenum perm
Magnetic core；
3) assembling of common mode inductance
1. molybdenum perm magnetic core is positioned in aluminum-nitride-based ceramic skeleton, uses epoxy resin to fix；
2. copper cash is wrapped on aluminum-nitride-based ceramic skeleton by standard canoe；
3. use aluminium alloy radome to be encapsulated by whole common mode inductance, in gap, during encapsulation, fill full 1) in step 6. prepare
Graininess heat-conducting insulation material；Then use epoxy resin to seal, i.e. obtain pending common mode inductance；
4) stabilizing treatment of common mode inductance
1. by 3) in the pending common mode inductance that 3. obtains of step be positioned in household freezer, temperature not higher than-70 DEG C, insulation
20min-30min, it is thus achieved that cold treatment common mode inductance；
2., after 1. step completes, cold treatment common mode inductance step 1. obtained is put at room temperature, returns back to room temperature to its temperature,
It is then placed in baking oven, rises to 100 DEG C-105 DEG C with the heating rate of not higher than 2 DEG C/min, be incubated 25min-30min, it is thus achieved that
Thermal cycle common mode inductance；
3. thermal cycle common mode inductance step 2. obtained is put at room temperature, returns back to room temperature to its temperature；
4. 1. ~ 3. operation twice is repeated, needed for i.e. obtaining, applies the common mode inductance of high stability molybdenum perm magnetic core.
According to the common mode inductance applying high stability molybdenum perm magnetic core manufactured by above-mentioned manufacture method, including bone
Frame, winding, magnetic core, radome, encapsulating material；Skeleton is aluminium nitride ceramics skeleton；Magnetic core is molybdenum perm magnetic core；Use asphalt mixtures modified by epoxy resin
Fat encapsulates；It is filled with alumina ceramic grain in the gap of radome and other parts；Radome have employed aluminium alloy and makes,
Full-closed structure encapsulates.
This common mode inductance initial magnetic permeability is ferritic 50-100 times；Saturation induction density is ferritic 20-30
Times；Shielding grade is at least A level；Operating temperature when can bear-50 DEG C ~ 200 DEG C long.
Compared with prior art, the invention have the advantages that and selected the good molybdenum permalloy of stability, and right
Molybdenum permalloy carried out impacting-the repeatedly circular treatment of destressing-deformation-school shape-destressing, and also destressing temperature is the highest
In Curie temperature, the molybdenum perm magnetic core size good stability of therefore final acquisition, remaining mixed and disorderly magnetic flux are little；Due to molybdenum perm material
Material has the highest permeability, saturation induction density and relatively low coercivity and resistivity, the therefore electromagnetic performance of the present invention
Excellent；It is the lowest more stable that its inductance stabilization numerical value of molybdenum perm material used due to the present invention again is not higher than 0.03%(numerical value),
It is the lowest more stable that initial inductance deviation range numerical value is not higher than 0.3%(numerical value) so that the basal temperature stability of the present invention is the most very
Good, because of insensitive to variations in temperature；Owing to skeleton uses aluminum-nitride-based pottery to make, comprehensive organ's property of this aluminum-nitride-based pottery
Can be excellent, and thermal coefficient of expansion is low, more difficult to aging, rotten, use aluminium alloy full-closed structure in addition, use being total to of the present invention
The infringement of the mould electroreception external world is little, and therefore service life is long；Owing to using aluminium alloy full-closed structure, therefore electromagnetic wave shielding
Good；Again owing to being filled with High-heat-conductiviinsulation insulation material between this aluminium alloy structure and heating part, and cover whole common mode inductance,
Therefore the excellent radiation performance of this common mode inductance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
In figure: radome 1, ceramic skeleton 2, magnetic core 3, alumina ceramic grain 4, encapsulating material 5, winding 6.
Detailed description of the invention
Embodiment 1:
A kind of common mode inductance applying high stability molybdenum perm magnetic core, including skeleton, winding 6, magnetic core 3, radome 1, encapsulation
Material 5；Skeleton is aluminium nitride ceramics skeleton 2；Magnetic core 3 is molybdenum perm magnetic core 3；Use epoxy encapsulation；Radome 1 and its
Alumina ceramic grain 4 it is filled with in the gap of its parts；Radome 1 have employed aluminium alloy and makes, and full-closed structure encapsulates.
This applies the common mode inductance manufacture method of high stability molybdenum perm magnetic core, comprises the following steps:
1) selection of each parts and preparation
1. skeleton selects annular aluminum-nitride-based ceramic skeleton 2, and this aluminum-nitride-based pottery selection standard is: specific insulation >=2 ×
1013Ω cm, dielectric strength >=750kV/cm, thermal conductivity >=25W/m K, bending strength >=400Mpa, young's modulus >=
320Gpa, fracture toughness >=25Mpa；
2. the molybdenum perm raw material of high stability selected by magnetic core 3, and this molybdenum perm raw material contains molybdenum 3.2%-3.8%, iron content 15.8%-
17.2%, nickeliferous 79%-81%；
3. radome 1 uses aluminium alloy to make, and uses full-closed structure；
4. encapsulating material 5 uses epoxy resin；
5. winding 6 uses standard winding 6 to use copper cash；
6. insulation heat-transfer filler selects special alumina ceramic grain 4；
2) processed of magnetic core 3
1. molybdenum perm raw material is positioned over and is assembled with under the stamping machine of annular punch, in endless metal diel, by standard
Method impact die mould, it is thus achieved that multiple molybdenum perm ring plates；
2., after 1. step completes, molybdenum perm ring plate step 1. obtained puts into vacuum drying oven, in the vacuum environment of 10pa, 950
Carry out pre-anneal treatment at a temperature of DEG C, come out of the stove after cooling to 550 DEG C after having annealed with the furnace, it is thus achieved that deformation molybdenum perm ring plate；
3., after the deformation molybdenum perm ring plate laminated multi-layer 2. step obtained, it is placed in shape-setting clamp and carries out physical constraints calmly
Type, it is thus achieved that sizing molybdenum perm magnetic core 3；
4. vacuum drying oven put into by the sizing molybdenum perm magnetic core 3 step 3. obtained, in the vacuum environment of 10pa, at a temperature of 950 DEG C
Carry out whole annealing, come out of the stove after cooling to 550 DEG C after having annealed with the furnace, it is thus achieved that destressing molybdenum perm magnetic core 3；
5. 3. ~ 4. operation is repeated, until the destressing molybdenum perm magnetic core 3 obtained after removing high temperature resistant shape-setting clamp remains to full
Foot dimensional requirement, i.e. obtains stand-by molybdenum perm magnetic core 3；
6. the stand-by molybdenum perm magnetic core 3 using epoxy resin 5. to obtain step bonds and encapsulates, and i.e. obtains required molybdenum slope
Not magnetic core 3；
3) assembling of common mode inductance
1. molybdenum perm magnetic core 3 is positioned in aluminum-nitride-based ceramic skeleton 2, uses epoxy resin to fix；
2. copper cash is wrapped on aluminum-nitride-based ceramic skeleton 2 by standard canoe；
3. use aluminium alloy radome 1 to be encapsulated by whole common mode inductance, in gap, during encapsulation, fill full 1) in step 6. prepare
Graininess heat-conducting insulation material；Then use epoxy resin to seal, i.e. obtain pending common mode inductance；
4) stabilizing treatment of common mode inductance
1. by 3) in the pending common mode inductance that 3. obtains of step be positioned in household freezer, temperature-70 DEG C, be incubated 20min, it is thus achieved that
Cold treatment common mode inductance；
2., after 1. step completes, cold treatment common mode inductance step 1. obtained is put at room temperature, returns back to room temperature to its temperature,
It is then placed in baking oven, rises to 100 DEG C with the heating rate of 2 DEG C/min, be incubated 25min, it is thus achieved that thermal cycle common mode inductance；
3. thermal cycle common mode inductance step 2. obtained is put at room temperature, returns back to room temperature to its temperature；
4. 1. ~ 3. operation twice is repeated, needed for i.e. obtaining, applies the common mode inductance of high stability molybdenum perm magnetic core 3.
The common mode inductance sample produced according to the present embodiment, this common mode inductance initial magnetic permeability is ferritic 60 times；
Saturation induction density is ferritic 23 times；Shielding grade is A level；Operating temperature when can bear-50 DEG C ~ 200 DEG C long.
Embodiment 2:
A kind of common mode inductance applying high stability molybdenum perm magnetic core, including skeleton, winding 6, magnetic core 3, radome 1, encapsulation
Material 5；Skeleton is aluminium nitride ceramics skeleton 2；Magnetic core 3 is molybdenum perm magnetic core 3；Use epoxy encapsulation；Radome 1 and its
Alumina ceramic grain 4 it is filled with in the gap of its parts；Radome 1 have employed aluminium alloy and makes, and full-closed structure encapsulates.
This applies the common mode inductance manufacture method of high stability molybdenum perm magnetic core, comprises the following steps:
1) selection of each parts and preparation
1. skeleton selects annular aluminum-nitride-based ceramic skeleton 2, and this aluminum-nitride-based pottery selection standard is: specific insulation >=2 ×
1013Ω cm, dielectric strength >=750kV/cm, thermal conductivity >=25W/m K, bending strength >=400Mpa, young's modulus >=
320Gpa, fracture toughness >=25Mpa；
2. the molybdenum perm raw material of high stability selected by magnetic core 3, and this molybdenum perm raw material contains molybdenum 3.2%-3.8%, iron content 15.8%-
17.2%, nickeliferous 79%-81%；
3. radome 1 uses aluminium alloy to make, and uses full-closed structure；
4. encapsulating material 5 uses epoxy resin；
5. winding 6 uses standard winding 6 to use copper cash；
6. insulation heat-transfer filler selects special alumina ceramic grain 4；
2) processed of magnetic core 3
1. molybdenum perm raw material is positioned over and is assembled with under the stamping machine of annular punch, in endless metal diel, by standard
Method impact die mould, it is thus achieved that multiple molybdenum perm ring plates；
2., after 1. step completes, molybdenum perm ring plate step 1. obtained puts into vacuum drying oven, in the vacuum environment of 1pa, 1000
Carry out pre-anneal treatment at a temperature of DEG C, come out of the stove after cooling to 580 DEG C after having annealed with the furnace, it is thus achieved that deformation molybdenum perm ring plate；
3., after the deformation molybdenum perm ring plate laminated multi-layer 2. step obtained, it is placed in shape-setting clamp and carries out physical constraints calmly
Type, it is thus achieved that sizing molybdenum perm magnetic core 3；
4. vacuum drying oven put into by the sizing molybdenum perm magnetic core 3 step 3. obtained, in the vacuum environment of 1pa, at a temperature of 1000 DEG C
Carry out whole annealing, come out of the stove after cooling to 580 DEG C after having annealed with the furnace, it is thus achieved that destressing molybdenum perm magnetic core 3；
5. 3. ~ 4. operation is repeated, until the destressing molybdenum perm magnetic core 3 obtained after removing high temperature resistant shape-setting clamp remains to full
Foot dimensional requirement, i.e. obtains stand-by molybdenum perm magnetic core 3；
6. the stand-by molybdenum perm magnetic core 3 using epoxy resin 5. to obtain step bonds and encapsulates, and i.e. obtains required molybdenum slope
Not magnetic core 3；
3) assembling of common mode inductance
1. molybdenum perm magnetic core 3 is positioned in aluminum-nitride-based ceramic skeleton 2, uses epoxy resin to fix；
2. copper cash is wrapped on aluminum-nitride-based ceramic skeleton 2 by standard canoe；
3. use aluminium alloy radome 1 to be encapsulated by whole common mode inductance, in gap, during encapsulation, fill full 1) in step 6. prepare
Graininess heat-conducting insulation material；Then use epoxy resin to seal, i.e. obtain pending common mode inductance；
4) stabilizing treatment of common mode inductance
1. by 3) in the pending common mode inductance that 3. obtains of step be positioned in household freezer, temperature-80 DEG C, be incubated 30min, it is thus achieved that
Cold treatment common mode inductance；
2., after 1. step completes, cold treatment common mode inductance step 1. obtained is put at room temperature, returns back to room temperature to its temperature,
It is then placed in baking oven, rises to 105 DEG C with the heating rate of 1.5 DEG C/min, be incubated 30min, it is thus achieved that thermal cycle common mode inductance；
3. thermal cycle common mode inductance step 2. obtained is put at room temperature, returns back to room temperature to its temperature；
4. 1. ~ 3. operation twice is repeated, needed for i.e. obtaining, applies the common mode inductance of high stability molybdenum perm magnetic core 3.
The common mode inductance sample produced according to the present embodiment, this common mode inductance initial magnetic permeability is ferritic 93 times；
Saturation induction density is ferritic 28 times；Shielding grade is T level；Operating temperature when can bear-50 DEG C ~ 200 DEG C long.
Described above to the disclosed embodiments, only for making professional and technical personnel in the field be capable of or using this
Invention.Multiple amendment to these embodiments will be apparent from for those skilled in the art, herein institute
The General Principle of definition can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore,
The present invention is not intended to be limited to the embodiments shown herein, and is to fit to special with principles disclosed herein and novelty
The widest scope that point is consistent.
Claims (2)
1. the common mode inductance manufacture method applying high stability molybdenum perm magnetic core, it is characterised in that comprise the following steps:
1) selection of each parts and preparation
1. skeleton selects annular aluminum-nitride-based ceramic skeleton (2)；
2. the molybdenum perm raw material of high stability selected by magnetic core (3), and this molybdenum perm raw material contains molybdenum 3.2%-3.8%, iron content
15.8%-17.2%, nickeliferous 79%-81%；
3. radome (1) uses aluminium alloy to make, and uses full-closed structure；
4. encapsulating material (5) uses epoxy resin；
5. winding (6) uses standard winding (6) to use copper cash；
6. insulation heat-transfer filler selects special alumina ceramic grain (4)；
2) processed of magnetic core (3)
1. molybdenum perm raw material is positioned over and is assembled with under the stamping machine of annular punch, in endless metal diel, by standard
Method impact die mould, it is thus achieved that multiple molybdenum perm ring plates；
2., after 1. step completes, molybdenum perm ring plate step 1. obtained puts into vacuum drying oven, in the vacuum environment of 1pa-10pa,
Carry out pre-anneal treatment at a temperature of 950 DEG C-1000 DEG C, come out of the stove after cooling to 550 DEG C-580 DEG C after having annealed with the furnace, it is thus achieved that become
Shape molybdenum perm ring plate；
3., after the deformation molybdenum perm ring plate laminated multi-layer 2. step obtained, it is placed in shape-setting clamp and carries out physical constraints calmly
Type, it is thus achieved that sizing molybdenum perm magnetic core (3)；
4. vacuum drying oven is put in sizing molybdenum perm magnetic core (3) step 3. obtained, in the vacuum environment of 1pa-10pa, 950 DEG C-
Carry out whole annealing at a temperature of 1000 DEG C, come out of the stove after cooling to 550 DEG C-580 DEG C after having annealed with the furnace, it is thus achieved that destressing molybdenum
Perm magnetic core (3)；
5. 3. ~ 4. operation is repeated, until destressing molybdenum perm magnetic core (3) obtained after removing high temperature resistant shape-setting clamp remains to
Meet dimensional requirement, i.e. obtain stand-by molybdenum perm magnetic core (3)；
6. stand-by molybdenum perm magnetic core (3) using epoxy resin 5. to obtain step bonds and encapsulates, and i.e. obtains required molybdenum
Perm magnetic core (3)；
3) assembling of common mode inductance
1. molybdenum perm magnetic core (3) is positioned in aluminum-nitride-based ceramic skeleton (2), uses epoxy resin to fix；
2. copper cash is wrapped on aluminum-nitride-based ceramic skeleton (2) by standard canoe；
3. use aluminium alloy radome (1) to be encapsulated by whole common mode inductance, in gap, during encapsulation, fill full 1) in step the most accurate
Standby graininess heat-conducting insulation material；Then use epoxy resin to seal, i.e. obtain pending common mode inductance；
4) stabilizing treatment of common mode inductance
1. by 3) in the pending common mode inductance that 3. obtains of step be positioned in household freezer, temperature not higher than-70 DEG C, insulation
20min-30min, it is thus achieved that cold treatment common mode inductance；
2., after 1. step completes, cold treatment common mode inductance step 1. obtained is put at room temperature, returns back to room temperature to its temperature,
It is then placed in baking oven, rises to 100 DEG C-105 DEG C with the heating rate of not higher than 2 DEG C/min, be incubated 25min-30min, it is thus achieved that
Thermal cycle common mode inductance；
3. thermal cycle common mode inductance step 2. obtained is put at room temperature, returns back to room temperature to its temperature；
4. 1. ~ 3. operation twice is repeated, needed for i.e. obtaining, applies the common mode inductance of high stability molybdenum perm magnetic core.
2. the common mode electricity applying high stability molybdenum perm magnetic core manufactured by manufacture method according to claim 1
Sense, including skeleton, winding (6), magnetic core (3), radome (1), encapsulating material (5), it is characterised in that: skeleton is aluminium nitride ceramics
Skeleton (2)；Magnetic core (3) is molybdenum perm magnetic core (3)；Use epoxy encapsulation；In radome (1) and the gap of other parts
It is filled with alumina ceramic grain (4)；Radome (1) have employed aluminium alloy and makes, and full-closed structure encapsulates.
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| CN102568808A (en) * | 2012-01-19 | 2012-07-11 | 邹光荣 | Cold-heat circulation aging treatment method for increasing magnetic stability of permanent magnets |
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| CN1065747A (en) * | 1991-04-11 | 1992-10-28 | 陈启星 | Silicon steel granule and ferrite powder are made the method for compound magnetic conductor using |
| CN2884450Y (en) * | 2006-04-10 | 2007-03-28 | 袁向东 | Resonance inductance assembly of electronic ballast of high pressure gas discharge lamp |
| CN102074334A (en) * | 2010-12-06 | 2011-05-25 | 保定天威集团有限公司 | Current transformer iron core |
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